2007 lines
102 KiB
HTML
2007 lines
102 KiB
HTML
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</head>
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<body>
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<div class="document" id="dfhack-lua-api">
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<h1 class="title">DFHack Lua API</h1>
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<div class="contents topic" id="contents">
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<p class="topic-title first">Contents</p>
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<ul class="simple">
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<li><a class="reference internal" href="#df-data-structure-wrapper" id="id1">DF data structure wrapper</a><ul>
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<li><a class="reference internal" href="#typed-object-references" id="id2">Typed object references</a><ul>
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<li><a class="reference internal" href="#primitive-references" id="id3">Primitive references</a></li>
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<li><a class="reference internal" href="#struct-references" id="id4">Struct references</a></li>
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<li><a class="reference internal" href="#container-references" id="id5">Container references</a></li>
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<li><a class="reference internal" href="#bitfield-references" id="id6">Bitfield references</a></li>
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</ul>
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</li>
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<li><a class="reference internal" href="#named-types" id="id7">Named types</a></li>
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<li><a class="reference internal" href="#global-functions" id="id8">Global functions</a></li>
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<li><a class="reference internal" href="#recursive-table-assignment" id="id9">Recursive table assignment</a></li>
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</ul>
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</li>
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<li><a class="reference internal" href="#dfhack-api" id="id10">DFHack API</a><ul>
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<li><a class="reference internal" href="#native-utilities" id="id11">Native utilities</a><ul>
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<li><a class="reference internal" href="#input-output" id="id12">Input & Output</a></li>
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<li><a class="reference internal" href="#exception-handling" id="id13">Exception handling</a></li>
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<li><a class="reference internal" href="#miscellaneous" id="id14">Miscellaneous</a></li>
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<li><a class="reference internal" href="#locking-and-finalization" id="id15">Locking and finalization</a></li>
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<li><a class="reference internal" href="#persistent-configuration-storage" id="id16">Persistent configuration storage</a></li>
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<li><a class="reference internal" href="#material-info-lookup" id="id17">Material info lookup</a></li>
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</ul>
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</li>
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<li><a class="reference internal" href="#c-function-wrappers" id="id18">C++ function wrappers</a><ul>
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<li><a class="reference internal" href="#gui-module" id="id19">Gui module</a></li>
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<li><a class="reference internal" href="#job-module" id="id20">Job module</a></li>
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<li><a class="reference internal" href="#units-module" id="id21">Units module</a></li>
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<li><a class="reference internal" href="#items-module" id="id22">Items module</a></li>
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<li><a class="reference internal" href="#maps-module" id="id23">Maps module</a></li>
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<li><a class="reference internal" href="#burrows-module" id="id24">Burrows module</a></li>
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<li><a class="reference internal" href="#buildings-module" id="id25">Buildings module</a></li>
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<li><a class="reference internal" href="#constructions-module" id="id26">Constructions module</a></li>
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<li><a class="reference internal" href="#screen-api" id="id27">Screen API</a></li>
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<li><a class="reference internal" href="#internal-api" id="id28">Internal API</a></li>
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</ul>
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</li>
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<li><a class="reference internal" href="#core-interpreter-context" id="id29">Core interpreter context</a><ul>
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<li><a class="reference internal" href="#event-type" id="id30">Event type</a></li>
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</ul>
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</li>
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</ul>
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</li>
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<li><a class="reference internal" href="#lua-modules" id="id31">Lua Modules</a><ul>
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<li><a class="reference internal" href="#global-environment" id="id32">Global environment</a></li>
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<li><a class="reference internal" href="#utils" id="id33">utils</a></li>
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<li><a class="reference internal" href="#dumper" id="id34">dumper</a></li>
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</ul>
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</li>
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<li><a class="reference internal" href="#plugins" id="id35">Plugins</a><ul>
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<li><a class="reference internal" href="#burrows" id="id36">burrows</a></li>
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<li><a class="reference internal" href="#sort" id="id37">sort</a></li>
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</ul>
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</li>
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<li><a class="reference internal" href="#scripts" id="id38">Scripts</a></li>
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</ul>
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</div>
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<p>The current version of DFHack has extensive support for
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the Lua scripting language, providing access to:</p>
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<ol class="arabic simple">
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<li>Raw data structures used by the game.</li>
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<li>Many C++ functions for high-level access to these
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structures, and interaction with dfhack itself.</li>
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<li>Some functions exported by C++ plugins.</li>
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</ol>
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<p>Lua code can be used both for writing scripts, which
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are treated by DFHack command line prompt almost as
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native C++ commands, and invoked by plugins written in c++.</p>
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<p>This document describes native API available to Lua in detail.
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It does not describe all of the utility functions
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implemented by Lua files located in hack/lua/...</p>
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<div class="section" id="df-data-structure-wrapper">
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<h1><a class="toc-backref" href="#id1">DF data structure wrapper</a></h1>
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<p>DF structures described by the xml files in library/xml are exported
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to lua code as a tree of objects and functions under the <tt class="docutils literal">df</tt> global,
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which broadly maps to the <tt class="docutils literal">df</tt> namespace in C++.</p>
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<p><strong>WARNING</strong>: The wrapper provides almost raw access to the memory
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of the game, so mistakes in manipulating objects are as likely to
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crash the game as equivalent plain C++ code would be. E.g. NULL
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pointer access is safely detected, but dangling pointers aren't.</p>
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<p>Objects managed by the wrapper can be broadly classified into the following groups:</p>
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<ol class="arabic">
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<li><p class="first">Typed object pointers (references).</p>
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<p>References represent objects in DF memory with a known type.</p>
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<p>In addition to fields and methods defined by the wrapped type,
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every reference has some built-in properties and methods.</p>
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</li>
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<li><p class="first">Untyped pointers</p>
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<p>Represented as lightuserdata.</p>
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<p>In assignment to a pointer NULL can be represented either as
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<tt class="docutils literal">nil</tt>, or a NULL lightuserdata; reading a NULL pointer field
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returns <tt class="docutils literal">nil</tt>.</p>
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</li>
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<li><p class="first">Named types</p>
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<p>Objects in the <tt class="docutils literal">df</tt> tree that represent identity of struct, class,
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enum and bitfield types. They host nested named types, static
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methods, builtin properties & methods, and, for enums and bitfields,
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the bi-directional mapping between key names and values.</p>
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</li>
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<li><p class="first">The <tt class="docutils literal">global</tt> object</p>
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<p><tt class="docutils literal">df.global</tt> corresponds to the <tt class="docutils literal"><span class="pre">df::global</span></tt> namespace, and
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behaves as a mix between a named type and a reference, containing
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both nested types and fields corresponding to global symbols.</p>
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</li>
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</ol>
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<p>In addition to the <tt class="docutils literal">global</tt> object and top-level types the <tt class="docutils literal">df</tt>
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global also contains a few global builtin utility functions.</p>
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<div class="section" id="typed-object-references">
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<h2><a class="toc-backref" href="#id2">Typed object references</a></h2>
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<p>The underlying primitive lua object is userdata with a metatable.
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Every structured field access produces a new userdata instance.</p>
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<p>All typed objects have the following built-in features:</p>
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<ul>
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<li><p class="first"><tt class="docutils literal">ref1 == ref2</tt>, <tt class="docutils literal">tostring(ref)</tt></p>
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<p>References implement equality by type & pointer value, and string conversion.</p>
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</li>
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<li><p class="first"><tt class="docutils literal">pairs(ref)</tt></p>
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<p>Returns an iterator for the sequence of actual C++ field names
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and values. Fields are enumerated in memory order. Methods and
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lua wrapper properties are not included in the iteration.</p>
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<p><strong>WARNING</strong>: a few of the data structures (like ui_look_list)
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contain unions with pointers to different types with vtables.
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Using pairs on such structs is an almost sure way to crash with
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an access violation.</p>
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</li>
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<li><p class="first"><tt class="docutils literal">ref._kind</tt></p>
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<p>Returns one of: <tt class="docutils literal">primitive</tt>, <tt class="docutils literal">struct</tt>, <tt class="docutils literal">container</tt>,
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or <tt class="docutils literal">bitfield</tt>, as appropriate for the referenced object.</p>
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</li>
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<li><p class="first"><tt class="docutils literal">ref._type</tt></p>
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<p>Returns the named type object or a string that represents
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the referenced object type.</p>
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</li>
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<li><p class="first"><tt class="docutils literal">ref:sizeof()</tt></p>
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<p>Returns <em>size, address</em></p>
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</li>
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<li><p class="first"><tt class="docutils literal">ref:new()</tt></p>
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<p>Allocates a new instance of the same type, and copies data
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from the current object.</p>
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</li>
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<li><p class="first"><tt class="docutils literal">ref:delete()</tt></p>
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<p>Destroys the object with the C++ <tt class="docutils literal">delete</tt> operator.
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If destructor is not available, returns <em>false</em>.</p>
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<p><strong>WARNING</strong>: the lua reference object remains as a dangling
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pointer, like a raw C++ pointer would.</p>
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</li>
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<li><p class="first"><tt class="docutils literal">ref:assign(object)</tt></p>
|
|
<p>Assigns data from object to ref. Object must either be another
|
|
ref of a compatible type, or a lua table; in the latter case
|
|
special recursive assignment rules are applied.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">ref:_displace(index[,step])</span></tt></p>
|
|
<p>Returns a new reference with the pointer adjusted by index*step.
|
|
Step defaults to the natural object size.</p>
|
|
</li>
|
|
</ul>
|
|
<div class="section" id="primitive-references">
|
|
<h3><a class="toc-backref" href="#id3">Primitive references</a></h3>
|
|
<p>References of the <em>_kind</em> <tt class="docutils literal">'primitive'</tt> are used for objects
|
|
that don't fit any of the other reference types. Such
|
|
references can only appear as a value of a pointer field,
|
|
or as a result of calling the <tt class="docutils literal">_field()</tt> method.</p>
|
|
<p>They behave as structs with one field <tt class="docutils literal">value</tt> of the right type.</p>
|
|
<p>To make working with numeric buffers easier, they also allow
|
|
numeric indices. Note that other than excluding negative values
|
|
no bound checking is performed, since buffer length is not available.
|
|
Index 0 is equivalent to the <tt class="docutils literal">value</tt> field.</p>
|
|
</div>
|
|
<div class="section" id="struct-references">
|
|
<h3><a class="toc-backref" href="#id4">Struct references</a></h3>
|
|
<p>Struct references are used for class and struct objects.</p>
|
|
<p>They implement the following features:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">ref.field</tt>, <tt class="docutils literal">ref.field = value</tt></p>
|
|
<p>Valid fields of the structure may be accessed by subscript.</p>
|
|
<p>Primitive typed fields, i.e. numbers & strings, are converted
|
|
to/from matching lua values. The value of a pointer is a reference
|
|
to the target, or nil/NULL. Complex types are represented by
|
|
a reference to the field within the structure; unless recursive
|
|
lua table assignment is used, such fields can only be read.</p>
|
|
<p><strong>NOTE:</strong> In case of inheritance, <em>superclass</em> fields have precedence
|
|
over the subclass, but fields shadowed in this way can still
|
|
be accessed as <tt class="docutils literal"><span class="pre">ref['subclasstype.field']</span></tt>.
|
|
This shadowing order is necessary because vtable-based classes
|
|
are automatically exposed in their exact type, and the reverse
|
|
rule would make access to superclass fields unreliable.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">ref._field(field)</tt></p>
|
|
<p>Returns a reference to a valid field. That is, unlike regular
|
|
subscript, it returns a reference to the field within the structure
|
|
even for primitive typed fields and pointers.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">ref:vmethod(args...)</span></tt></p>
|
|
<p>Named virtual methods are also exposed, subject to the same
|
|
shadowing rules.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">pairs(ref)</tt></p>
|
|
<p>Enumerates all real fields (but not methods) in memory
|
|
(= declaration) order.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="container-references">
|
|
<h3><a class="toc-backref" href="#id5">Container references</a></h3>
|
|
<p>Containers represent vectors and arrays, possibly resizable.</p>
|
|
<p>A container field can associate an enum to the container
|
|
reference, which allows accessing elements using string keys
|
|
instead of numerical indices.</p>
|
|
<p>Implemented features:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">ref._enum</tt></p>
|
|
<p>If the container has an associated enum, returns the matching
|
|
named type object.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">#ref</tt></p>
|
|
<p>Returns the <em>length</em> of the container.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">ref[index]</tt></p>
|
|
<p>Accesses the container element, using either a <em>0-based</em> numerical
|
|
index, or, if an enum is associated, a valid enum key string.</p>
|
|
<p>Accessing an invalid index is an error, but some container types
|
|
may return a default value, or auto-resize instead for convenience.
|
|
Currently this relaxed mode is implemented by df-flagarray aka BitArray.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">ref._field(index)</tt></p>
|
|
<p>Like with structs, returns a pointer to the array element, if possible.
|
|
Flag and bit arrays cannot return such pointer, so it fails with an error.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">pairs(ref)</tt>, <tt class="docutils literal">ipairs(ref)</tt></p>
|
|
<p>If the container has no associated enum, both behave identically,
|
|
iterating over numerical indices in order. Otherwise, ipairs still
|
|
uses numbers, while pairs tries to substitute enum keys whenever
|
|
possible.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">ref:resize(new_size)</tt></p>
|
|
<p>Resizes the container if supported, or fails with an error.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">ref:insert(index,item)</tt></p>
|
|
<p>Inserts a new item at the specified index. To add at the end,
|
|
use <tt class="docutils literal">#ref</tt>, or just <tt class="docutils literal">'#'</tt> as index.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">ref:erase(index)</tt></p>
|
|
<p>Removes the element at the given valid index.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="bitfield-references">
|
|
<h3><a class="toc-backref" href="#id6">Bitfield references</a></h3>
|
|
<p>Bitfields behave like special fixed-size containers.
|
|
Consider them to be something in between structs and
|
|
fixed-size vectors.</p>
|
|
<p>The <tt class="docutils literal">_enum</tt> property points to the bitfield type.
|
|
Numerical indices correspond to the shift value,
|
|
and if a subfield occupies multiple bits, the
|
|
<tt class="docutils literal">ipairs</tt> order would have a gap.</p>
|
|
<p>Since currently there is no API to allocate a bitfield
|
|
object fully in GC-managed lua heap, consider using the
|
|
lua table assignment feature outlined below in order to
|
|
pass bitfield values to dfhack API functions that need
|
|
them, e.g. <tt class="docutils literal">matinfo:matches{metal=true}</tt>.</p>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="named-types">
|
|
<h2><a class="toc-backref" href="#id7">Named types</a></h2>
|
|
<p>Named types are exposed in the <tt class="docutils literal">df</tt> tree with names identical
|
|
to the C++ version, except for the <tt class="docutils literal">::</tt> vs <tt class="docutils literal">.</tt> difference.</p>
|
|
<p>All types and the global object have the following features:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">type._kind</tt></p>
|
|
<p>Evaluates to one of <tt class="docutils literal"><span class="pre">struct-type</span></tt>, <tt class="docutils literal"><span class="pre">class-type</span></tt>, <tt class="docutils literal"><span class="pre">enum-type</span></tt>,
|
|
<tt class="docutils literal"><span class="pre">bitfield-type</span></tt> or <tt class="docutils literal">global</tt>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">type._identity</tt></p>
|
|
<p>Contains a lightuserdata pointing to the underlying
|
|
DFHack::type_instance object.</p>
|
|
</li>
|
|
</ul>
|
|
<p>Types excluding the global object also support:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">type:sizeof()</tt></p>
|
|
<p>Returns the size of an object of the type.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">type:new()</tt></p>
|
|
<p>Creates a new instance of an object of the type.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">type:is_instance(object)</tt></p>
|
|
<p>Returns true if object is same or subclass type, or a reference
|
|
to an object of same or subclass type. It is permissible to pass
|
|
nil, NULL or non-wrapper value as object; in this case the
|
|
method returns nil.</p>
|
|
</li>
|
|
</ul>
|
|
<p>In addition to this, enum and bitfield types contain a
|
|
bi-directional mapping between key strings and values, and
|
|
also map <tt class="docutils literal">_first_item</tt> and <tt class="docutils literal">_last_item</tt> to the min and
|
|
max values.</p>
|
|
<p>Struct and class types with instance-vector attribute in the
|
|
xml have a <tt class="docutils literal">type.find(key)</tt> function that wraps the find
|
|
method provided in C++.</p>
|
|
</div>
|
|
<div class="section" id="global-functions">
|
|
<h2><a class="toc-backref" href="#id8">Global functions</a></h2>
|
|
<p>The <tt class="docutils literal">df</tt> table itself contains the following functions and values:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">NULL</tt>, <tt class="docutils literal">df.NULL</tt></p>
|
|
<p>Contains the NULL lightuserdata.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">df.isnull(obj)</tt></p>
|
|
<p>Evaluates to true if obj is nil or NULL; false otherwise.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">df.isvalid(obj[,allow_null])</span></tt></p>
|
|
<p>For supported objects returns one of <tt class="docutils literal">type</tt>, <tt class="docutils literal">voidptr</tt>, <tt class="docutils literal">ref</tt>.</p>
|
|
<p>If <em>allow_null</em> is true, and obj is nil or NULL, returns <tt class="docutils literal">null</tt>.</p>
|
|
<p>Otherwise returns <em>nil</em>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">df.sizeof(obj)</tt></p>
|
|
<p>For types and refs identical to <tt class="docutils literal">obj:sizeof()</tt>.
|
|
For lightuserdata returns <em>nil, address</em></p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">df.new(obj)</tt>, <tt class="docutils literal">df.delete(obj)</tt>, <tt class="docutils literal">df.assign(obj, obj2)</tt></p>
|
|
<p>Equivalent to using the matching methods of obj.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">df._displace(obj,index[,step])</span></tt></p>
|
|
<p>For refs equivalent to the method, but also works with
|
|
lightuserdata (step is mandatory then).</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">df.is_instance(type,obj)</tt></p>
|
|
<p>Equivalent to the method, but also allows a reference as proxy for its type.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">df.new(ptype[,count])</span></tt></p>
|
|
<p>Allocate a new instance, or an array of built-in types.
|
|
The <tt class="docutils literal">ptype</tt> argument is a string from the following list:
|
|
<tt class="docutils literal">string</tt>, <tt class="docutils literal">int8_t</tt>, <tt class="docutils literal">uint8_t</tt>, <tt class="docutils literal">int16_t</tt>, <tt class="docutils literal">uint16_t</tt>,
|
|
<tt class="docutils literal">int32_t</tt>, <tt class="docutils literal">uint32_t</tt>, <tt class="docutils literal">int64_t</tt>, <tt class="docutils literal">uint64_t</tt>, <tt class="docutils literal">bool</tt>,
|
|
<tt class="docutils literal">float</tt>, <tt class="docutils literal">double</tt>. All of these except <tt class="docutils literal">string</tt> can be
|
|
used with the count argument to allocate an array.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">df.reinterpret_cast(type,ptr)</tt></p>
|
|
<p>Converts ptr to a ref of specified type. The type may be anything
|
|
acceptable to <tt class="docutils literal">df.is_instance</tt>. Ptr may be <em>nil</em>, a ref,
|
|
a lightuserdata, or a number.</p>
|
|
<p>Returns <em>nil</em> if NULL, or a ref.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="recursive-table-assignment">
|
|
<h2><a class="toc-backref" href="#id9">Recursive table assignment</a></h2>
|
|
<p>Recursive assignment is invoked when a lua table is assigned
|
|
to a C++ object or field, i.e. one of:</p>
|
|
<ul class="simple">
|
|
<li><tt class="docutils literal"><span class="pre">ref:assign{...}</span></tt></li>
|
|
<li><tt class="docutils literal">ref.field = <span class="pre">{...}</span></tt></li>
|
|
</ul>
|
|
<p>The general mode of operation is that all fields of the table
|
|
are assigned to the fields of the target structure, roughly
|
|
emulating the following code:</p>
|
|
<pre class="literal-block">
|
|
function rec_assign(ref,table)
|
|
for key,value in pairs(table) do
|
|
ref[key] = value
|
|
end
|
|
end
|
|
</pre>
|
|
<p>Since assigning a table to a field using = invokes the same
|
|
process, it is recursive.</p>
|
|
<p>There are however some variations to this process depending
|
|
on the type of the field being assigned to:</p>
|
|
<ol class="arabic">
|
|
<li><p class="first">If the table contains an <tt class="docutils literal">assign</tt> field, it is
|
|
applied first, using the <tt class="docutils literal">ref:assign(value)</tt> method.
|
|
It is never assigned as a usual field.</p>
|
|
</li>
|
|
<li><p class="first">When a table is assigned to a non-NULL pointer field
|
|
using the <tt class="docutils literal">ref.field = <span class="pre">{...}</span></tt> syntax, it is applied
|
|
to the target of the pointer instead.</p>
|
|
<p>If the pointer is NULL, the table is checked for a <tt class="docutils literal">new</tt> field:</p>
|
|
<ol class="loweralpha simple">
|
|
<li>If it is <em>nil</em> or <em>false</em>, assignment fails with an error.</li>
|
|
<li>If it is <em>true</em>, the pointer is initialized with a newly
|
|
allocated object of the declared target type of the pointer.</li>
|
|
<li>Otherwise, <tt class="docutils literal">table.new</tt> must be a named type, or an
|
|
object of a type compatible with the pointer. The pointer
|
|
is initialized with the result of calling <tt class="docutils literal">table.new:new()</tt>.</li>
|
|
</ol>
|
|
<p>After this auto-vivification process, assignment proceeds
|
|
as if the pointer wasn't NULL.</p>
|
|
<p>Obviously, the <tt class="docutils literal">new</tt> field inside the table is always skipped
|
|
during the actual per-field assignment processing.</p>
|
|
</li>
|
|
<li><p class="first">If the target of the assignment is a container, a separate
|
|
rule set is used:</p>
|
|
<ol class="loweralpha">
|
|
<li><p class="first">If the table contains neither <tt class="docutils literal">assign</tt> nor <tt class="docutils literal">resize</tt>
|
|
fields, it is interpreted as an ordinary <em>1-based</em> lua
|
|
array. The container is resized to the #-size of the
|
|
table, and elements are assigned in numeric order:</p>
|
|
<pre class="literal-block">
|
|
ref:resize(#table);
|
|
for i=1,#table do ref[i-1] = table[i] end
|
|
</pre>
|
|
</li>
|
|
<li><p class="first">Otherwise, <tt class="docutils literal">resize</tt> must be <em>true</em>, <em>false</em>, or
|
|
an explicit number. If it is not false, the container
|
|
is resized. After that the usual struct-like 'pairs'
|
|
assignment is performed.</p>
|
|
<p>In case <tt class="docutils literal">resize</tt> is <em>true</em>, the size is computed
|
|
by scanning the table for the largest numeric key.</p>
|
|
</li>
|
|
</ol>
|
|
<p>This means that in order to reassign only one element of
|
|
a container using this system, it is necessary to use:</p>
|
|
<pre class="literal-block">
|
|
{ resize=false, [idx]=value }
|
|
</pre>
|
|
</li>
|
|
</ol>
|
|
<p>Since nil inside a table is indistinguishable from missing key,
|
|
it is necessary to use <tt class="docutils literal">df.NULL</tt> as a null pointer value.</p>
|
|
<p>This system is intended as a way to define a nested object
|
|
tree using pure lua data structures, and then materialize it in
|
|
C++ memory in one go. Note that if pointer auto-vivification
|
|
is used, an error in the middle of the recursive walk would
|
|
not destroy any objects allocated in this way, so the user
|
|
should be prepared to catch the error and do the necessary
|
|
cleanup.</p>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="dfhack-api">
|
|
<h1><a class="toc-backref" href="#id10">DFHack API</a></h1>
|
|
<p>DFHack utility functions are placed in the <tt class="docutils literal">dfhack</tt> global tree.</p>
|
|
<div class="section" id="native-utilities">
|
|
<h2><a class="toc-backref" href="#id11">Native utilities</a></h2>
|
|
<div class="section" id="input-output">
|
|
<h3><a class="toc-backref" href="#id12">Input & Output</a></h3>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.print(args...)</span></tt></p>
|
|
<p>Output tab-separated args as standard lua print would do,
|
|
but without a newline.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">print(args...)</span></tt>, <tt class="docutils literal"><span class="pre">dfhack.println(args...)</span></tt></p>
|
|
<p>A replacement of the standard library print function that
|
|
works with DFHack output infrastructure.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.printerr(args...)</span></tt></p>
|
|
<p>Same as println; intended for errors. Uses red color and logs to stderr.log.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.color([color])</span></tt></p>
|
|
<p>Sets the current output color. If color is <em>nil</em> or <em>-1</em>, resets to default.
|
|
Returns the previous color value.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.is_interactive()</tt></p>
|
|
<p>Checks if the thread can access the interactive console and returns <em>true</em> or <em>false</em>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.lineedit([prompt[,history_filename]])</span></tt></p>
|
|
<p>If the thread owns the interactive console, shows a prompt
|
|
and returns the entered string. Otherwise returns <em>nil, error</em>.</p>
|
|
<p>Depending on the context, this function may actually yield the
|
|
running coroutine and let the C++ code release the core suspend
|
|
lock. Using an explicit <tt class="docutils literal">dfhack.with_suspend</tt> will prevent
|
|
this, forcing the function to block on input with lock held.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.interpreter([prompt[,env[,history_filename]]])</span></tt></p>
|
|
<p>Starts an interactive lua interpreter, using the specified prompt
|
|
string, global environment and command-line history file.</p>
|
|
<p>If the interactive console is not accessible, returns <em>nil, error</em>.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="exception-handling">
|
|
<h3><a class="toc-backref" href="#id13">Exception handling</a></h3>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.error(msg[,level[,verbose]])</span></tt></p>
|
|
<p>Throws a dfhack exception object with location and stack trace.
|
|
The verbose parameter controls whether the trace is printed by default.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">qerror(msg[,level])</span></tt></p>
|
|
<p>Calls <tt class="docutils literal">dfhack.error()</tt> with <tt class="docutils literal">verbose</tt> being <em>false</em>. Intended to
|
|
be used for user-caused errors in scripts, where stack traces are not
|
|
desirable.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.pcall(f[,args...])</span></tt></p>
|
|
<p>Invokes f via xpcall, using an error function that attaches
|
|
a stack trace to the error. The same function is used by SafeCall
|
|
in C++, and dfhack.safecall.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">safecall(f[,args...])</span></tt>, <tt class="docutils literal"><span class="pre">dfhack.safecall(f[,args...])</span></tt></p>
|
|
<p>Just like pcall, but also prints the error using printerr before
|
|
returning. Intended as a convenience function.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.saferesume(coroutine[,args...])</span></tt></p>
|
|
<p>Compares to coroutine.resume like dfhack.safecall vs pcall.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.exception</tt></p>
|
|
<p>Metatable of error objects used by dfhack. The objects have the
|
|
following properties:</p>
|
|
<dl class="docutils">
|
|
<dt><tt class="docutils literal">err.where</tt></dt>
|
|
<dd><p class="first last">The location prefix string, or <em>nil</em>.</p>
|
|
</dd>
|
|
<dt><tt class="docutils literal">err.message</tt></dt>
|
|
<dd><p class="first last">The base message string.</p>
|
|
</dd>
|
|
<dt><tt class="docutils literal">err.stacktrace</tt></dt>
|
|
<dd><p class="first last">The stack trace string, or <em>nil</em>.</p>
|
|
</dd>
|
|
<dt><tt class="docutils literal">err.cause</tt></dt>
|
|
<dd><p class="first last">A different exception object, or <em>nil</em>.</p>
|
|
</dd>
|
|
<dt><tt class="docutils literal">err.thread</tt></dt>
|
|
<dd><p class="first last">The coroutine that has thrown the exception.</p>
|
|
</dd>
|
|
<dt><tt class="docutils literal">err.verbose</tt></dt>
|
|
<dd><p class="first last">Boolean, or <em>nil</em>; specifies if where and stacktrace should be printed.</p>
|
|
</dd>
|
|
<dt><tt class="docutils literal">tostring(err)</tt>, or <tt class="docutils literal"><span class="pre">err:tostring([verbose])</span></tt></dt>
|
|
<dd><p class="first last">Converts the exception to string.</p>
|
|
</dd>
|
|
</dl>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.exception.verbose</tt></p>
|
|
<p>The default value of the <tt class="docutils literal">verbose</tt> argument of <tt class="docutils literal">err:tostring()</tt>.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="miscellaneous">
|
|
<h3><a class="toc-backref" href="#id14">Miscellaneous</a></h3>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.VERSION</tt></p>
|
|
<p>DFHack version string constant.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.curry(func,args...)</span></tt>, or <tt class="docutils literal"><span class="pre">curry(func,args...)</span></tt></p>
|
|
<p>Returns a closure that invokes the function with args combined
|
|
both from the curry call and the closure call itself. I.e.
|
|
<tt class="docutils literal"><span class="pre">curry(func,a,b)(c,d)</span></tt> equals <tt class="docutils literal">func(a,b,c,d)</tt>.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="locking-and-finalization">
|
|
<h3><a class="toc-backref" href="#id15">Locking and finalization</a></h3>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.with_suspend(f[,args...])</span></tt></p>
|
|
<p>Calls <tt class="docutils literal">f</tt> with arguments after grabbing the DF core suspend lock.
|
|
Suspending is necessary for accessing a consistent state of DF memory.</p>
|
|
<p>Returned values and errors are propagated through after releasing
|
|
the lock. It is safe to nest suspends.</p>
|
|
<p>Every thread is allowed only one suspend per DF frame, so it is best
|
|
to group operations together in one big critical section. A plugin
|
|
can choose to run all lua code inside a C++-side suspend lock.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.call_with_finalizer(num_cleanup_args,always,cleanup_fn[,cleanup_args...],fn[,args...])</span></tt></p>
|
|
<p>Invokes <tt class="docutils literal">fn</tt> with <tt class="docutils literal">args</tt>, and after it returns or throws an
|
|
error calls <tt class="docutils literal">cleanup_fn</tt> with <tt class="docutils literal">cleanup_args</tt>. Any return values from
|
|
<tt class="docutils literal">fn</tt> are propagated, and errors are re-thrown.</p>
|
|
<p>The <tt class="docutils literal">num_cleanup_args</tt> integer specifies the number of <tt class="docutils literal">cleanup_args</tt>,
|
|
and the <tt class="docutils literal">always</tt> boolean specifies if cleanup should be called in any case,
|
|
or only in case of an error.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.with_finalize(cleanup_fn,fn[,args...])</span></tt></p>
|
|
<p>Calls <tt class="docutils literal">fn</tt> with arguments, then finalizes with <tt class="docutils literal">cleanup_fn</tt>.
|
|
Implemented using <tt class="docutils literal"><span class="pre">call_with_finalizer(0,true,...)</span></tt>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.with_onerror(cleanup_fn,fn[,args...])</span></tt></p>
|
|
<p>Calls <tt class="docutils literal">fn</tt> with arguments, then finalizes with <tt class="docutils literal">cleanup_fn</tt> on any thrown error.
|
|
Implemented using <tt class="docutils literal"><span class="pre">call_with_finalizer(0,false,...)</span></tt>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.with_temp_object(obj,fn[,args...])</span></tt></p>
|
|
<p>Calls <tt class="docutils literal"><span class="pre">fn(obj,args...)</span></tt>, then finalizes with <tt class="docutils literal">obj:delete()</tt>.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="persistent-configuration-storage">
|
|
<h3><a class="toc-backref" href="#id16">Persistent configuration storage</a></h3>
|
|
<p>This api is intended for storing configuration options in the world itself.
|
|
It probably should be restricted to data that is world-dependent.</p>
|
|
<p>Entries are identified by a string <tt class="docutils literal">key</tt>, but it is also possible to manage
|
|
multiple entries with the same key; their identity is determined by <tt class="docutils literal">entry_id</tt>.
|
|
Every entry has a mutable string <tt class="docutils literal">value</tt>, and an array of 7 mutable <tt class="docutils literal">ints</tt>.</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.persistent.get(key)</tt>, <tt class="docutils literal">entry:get()</tt></p>
|
|
<p>Retrieves a persistent config record with the given string key,
|
|
or refreshes an already retrieved entry. If there are multiple
|
|
entries with the same key, it is undefined which one is retrieved
|
|
by the first version of the call.</p>
|
|
<p>Returns entry, or <em>nil</em> if not found.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.persistent.delete(key)</tt>, <tt class="docutils literal">entry:delete()</tt></p>
|
|
<p>Removes an existing entry. Returns <em>true</em> if succeeded.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.persistent.get_all(key[,match_prefix])</span></tt></p>
|
|
<p>Retrieves all entries with the same key, or starting with key..'/'.
|
|
Calling <tt class="docutils literal"><span class="pre">get_all('',true)</span></tt> will match all entries.</p>
|
|
<p>If none found, returns nil; otherwise returns an array of entries.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.persistent.save({key=str1,</span> <span class="pre">...}[,new])</span></tt>, <tt class="docutils literal"><span class="pre">entry:save([new])</span></tt></p>
|
|
<p>Saves changes in an entry, or creates a new one. Passing true as
|
|
new forces creation of a new entry even if one already exists;
|
|
otherwise the existing one is simply updated.
|
|
Returns <em>entry, did_create_new</em></p>
|
|
</li>
|
|
</ul>
|
|
<p>Since the data is hidden in data structures owned by the DF world,
|
|
and automatically stored in the save game, these save and retrieval
|
|
functions can just copy values in memory without doing any actual I/O.
|
|
However, currently every entry has a 180+-byte dead-weight overhead.</p>
|
|
</div>
|
|
<div class="section" id="material-info-lookup">
|
|
<h3><a class="toc-backref" href="#id17">Material info lookup</a></h3>
|
|
<p>A material info record has fields:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">type</tt>, <tt class="docutils literal">index</tt>, <tt class="docutils literal">material</tt></p>
|
|
<p>DF material code pair, and a reference to the material object.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">mode</tt></p>
|
|
<p>One of <tt class="docutils literal">'builtin'</tt>, <tt class="docutils literal">'inorganic'</tt>, <tt class="docutils literal">'plant'</tt>, <tt class="docutils literal">'creature'</tt>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">inorganic</tt>, <tt class="docutils literal">plant</tt>, <tt class="docutils literal">creature</tt></p>
|
|
<p>If the material is of the matching type, contains a reference to the raw object.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">figure</tt></p>
|
|
<p>For a specific creature material contains a ref to the historical figure.</p>
|
|
</li>
|
|
</ul>
|
|
<p>Functions:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.matinfo.decode(type,index)</tt></p>
|
|
<p>Looks up material info for the given number pair; if not found, returs <em>nil</em>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">....decode(matinfo)</span></tt>, <tt class="docutils literal"><span class="pre">....decode(item)</span></tt>, <tt class="docutils literal"><span class="pre">....decode(obj)</span></tt></p>
|
|
<p>Uses <tt class="docutils literal">matinfo.type</tt>/<tt class="docutils literal">matinfo.index</tt>, item getter vmethods,
|
|
or <tt class="docutils literal">obj.mat_type</tt>/<tt class="docutils literal">obj.mat_index</tt> to get the code pair.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.matinfo.find(token[,token...])</span></tt></p>
|
|
<p>Looks up material by a token string, or a pre-split string token sequence.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.matinfo.getToken(...)</span></tt>, <tt class="docutils literal">info:getToken()</tt></p>
|
|
<p>Applies <tt class="docutils literal">decode</tt> and constructs a string token.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">info:toString([temperature[,named]])</span></tt></p>
|
|
<p>Returns the human-readable name at the given temperature.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">info:getCraftClass()</tt></p>
|
|
<p>Returns the classification used for craft skills.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">info:matches(obj)</tt></p>
|
|
<p>Checks if the material matches job_material_category or job_item.
|
|
Accept dfhack_material_category auto-assign table.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="c-function-wrappers">
|
|
<h2><a class="toc-backref" href="#id18">C++ function wrappers</a></h2>
|
|
<p>Thin wrappers around C++ functions, similar to the ones for virtual methods.
|
|
One notable difference is that these explicit wrappers allow argument count
|
|
adjustment according to the usual lua rules, so trailing false/nil arguments
|
|
can be omitted.</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.getOSType()</tt></p>
|
|
<p>Returns the OS type string from <tt class="docutils literal">symbols.xml</tt>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.getDFVersion()</tt></p>
|
|
<p>Returns the DF version string from <tt class="docutils literal">symbols.xml</tt>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.getDFPath()</tt></p>
|
|
<p>Returns the DF directory path.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.getHackPath()</tt></p>
|
|
<p>Returns the dfhack directory path, i.e. <tt class="docutils literal"><span class="pre">".../df/hack/"</span></tt>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.getTickCount()</tt></p>
|
|
<p>Returns the tick count in ms, exactly as DF ui uses.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.isWorldLoaded()</tt></p>
|
|
<p>Checks if the world is loaded.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.isMapLoaded()</tt></p>
|
|
<p>Checks if the world and map are loaded.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.TranslateName(name[,in_english,only_last_name])</span></tt></p>
|
|
<p>Convert a language_name or only the last name part to string.</p>
|
|
</li>
|
|
</ul>
|
|
<div class="section" id="gui-module">
|
|
<h3><a class="toc-backref" href="#id19">Gui module</a></h3>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.gui.getCurViewscreen([skip_dismissed])</span></tt></p>
|
|
<p>Returns the topmost viewscreen. If <tt class="docutils literal">skip_dismissed</tt> is <em>true</em>,
|
|
ignores screens already marked to be removed.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.gui.getFocusString(viewscreen)</tt></p>
|
|
<p>Returns a string representation of the current focus position
|
|
in the ui. The string has a "screen/foo/bar/baz..." format.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.gui.getCurFocus([skip_dismissed])</span></tt></p>
|
|
<p>Returns the focus string of the current viewscreen.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.gui.getSelectedWorkshopJob([silent])</span></tt></p>
|
|
<p>When a job is selected in <em>'q'</em> mode, returns the job, else
|
|
prints error unless silent and returns <em>nil</em>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.gui.getSelectedJob([silent])</span></tt></p>
|
|
<p>Returns the job selected in a workshop or unit/jobs screen.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.gui.getSelectedUnit([silent])</span></tt></p>
|
|
<p>Returns the unit selected via <em>'v'</em>, <em>'k'</em>, unit/jobs, or
|
|
a full-screen item view of a cage or suchlike.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.gui.getSelectedItem([silent])</span></tt></p>
|
|
<p>Returns the item selected via <em>'v'</em> ->inventory, <em>'k'</em>, <em>'t'</em>, or
|
|
a full-screen item view of a container. Note that in the
|
|
last case, the highlighted <em>contained item</em> is returned, not
|
|
the container itself.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.gui.showAnnouncement(text,color[,is_bright])</span></tt></p>
|
|
<p>Adds a regular announcement with given text, color, and brightness.
|
|
The is_bright boolean actually seems to invert the brightness.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.gui.showZoomAnnouncement(type,pos,text,color[,is_bright])</span></tt></p>
|
|
<p>Like above, but also specifies a position you can zoom to from the announcement menu.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.gui.showPopupAnnouncement(text,color[,is_bright])</span></tt></p>
|
|
<p>Pops up a titan-style modal announcement window.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.gui.showAutoAnnouncement(type,pos,text,color[,is_bright])</span></tt></p>
|
|
<p>Uses the type to look up options from announcements.txt, and calls the
|
|
above operations accordingly. If enabled, pauses and zooms to position.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="job-module">
|
|
<h3><a class="toc-backref" href="#id20">Job module</a></h3>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.job.cloneJobStruct(job)</tt></p>
|
|
<p>Creates a deep copy of the given job.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.job.printJobDetails(job)</tt></p>
|
|
<p>Prints info about the job.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.job.printItemDetails(jobitem,idx)</tt></p>
|
|
<p>Prints info about the job item.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.job.getHolder(job)</tt></p>
|
|
<p>Returns the building holding the job.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.job.getWorker(job)</tt></p>
|
|
<p>Returns the unit performing the job.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.job.checkBuildingsNow()</tt></p>
|
|
<p>Instructs the game to check buildings for jobs next frame and assign workers.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.job.checkDesignationsNow()</tt></p>
|
|
<p>Instructs the game to check designations for jobs next frame and assign workers.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.job.is_equal(job1,job2)</tt></p>
|
|
<p>Compares important fields in the job and nested item structures.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.job.is_item_equal(job_item1,job_item2)</tt></p>
|
|
<p>Compares important fields in the job item structures.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.job.listNewlyCreated(first_id)</tt></p>
|
|
<p>Returns the current value of <tt class="docutils literal">df.global.job_next_id</tt>, and
|
|
if there are any jobs with <tt class="docutils literal">first_id <= id < job_next_id</tt>,
|
|
a lua list containing them.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="units-module">
|
|
<h3><a class="toc-backref" href="#id21">Units module</a></h3>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.getPosition(unit)</tt></p>
|
|
<p>Returns true <em>x,y,z</em> of the unit, or <em>nil</em> if invalid; may be not equal to unit.pos if caged.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.getContainer(unit)</tt></p>
|
|
<p>Returns the container (cage) item or <em>nil</em>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.setNickname(unit,nick)</tt></p>
|
|
<p>Sets the unit's nickname properly.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.getVisibleName(unit)</tt></p>
|
|
<p>Returns the language_name object visible in game, accounting for false identities.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.getIdentity(unit)</tt></p>
|
|
<p>Returns the false identity of the unit if it has one, or <em>nil</em>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.getNemesis(unit)</tt></p>
|
|
<p>Returns the nemesis record of the unit if it has one, or <em>nil</em>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.isHidingCurse(unit)</tt></p>
|
|
<p>Checks if the unit hides improved attributes from its curse.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.getPhysicalAttrValue(unit, attr_type)</tt></p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.getMentalAttrValue(unit, attr_type)</tt></p>
|
|
<p>Computes the effective attribute value, including curse effect.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.isCrazed(unit)</tt></p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.isOpposedToLife(unit)</tt></p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.hasExtravision(unit)</tt></p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.isBloodsucker(unit)</tt></p>
|
|
<p>Simple checks of caste attributes that can be modified by curses.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.getMiscTrait(unit, type[, create])</tt></p>
|
|
<p>Finds (or creates if requested) a misc trait object with the given id.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.isDead(unit)</tt></p>
|
|
<p>The unit is completely dead and passive, or a ghost.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.isAlive(unit)</tt></p>
|
|
<p>The unit isn't dead or undead.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.isSane(unit)</tt></p>
|
|
<p>The unit is capable of rational action, i.e. not dead, insane, zombie, or active werewolf.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.isDwarf(unit)</tt></p>
|
|
<p>The unit is of the correct race of the fortress.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.isCitizen(unit)</tt></p>
|
|
<p>The unit is an alive sane citizen of the fortress; wraps the
|
|
same checks the game uses to decide game-over by extinction.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.units.getAge(unit[,true_age])</span></tt></p>
|
|
<p>Returns the age of the unit in years as a floating-point value.
|
|
If <tt class="docutils literal">true_age</tt> is true, ignores false identities.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.getEffectiveSkill(unit, skill)</tt></p>
|
|
<p>Computes the effective rating for the given skill, taking into account exhaustion, pain etc.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.computeMovementSpeed(unit)</tt></p>
|
|
<p>Computes number of frames * 100 it takes the unit to move in its current state of mind and body.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.getNoblePositions(unit)</tt></p>
|
|
<p>Returns a list of tables describing noble position assignments, or <em>nil</em>.
|
|
Every table has fields <tt class="docutils literal">entity</tt>, <tt class="docutils literal">assignment</tt> and <tt class="docutils literal">position</tt>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.units.getProfessionName(unit[,ignore_noble,plural])</span></tt></p>
|
|
<p>Retrieves the profession name using custom profession, noble assignments
|
|
or raws. The <tt class="docutils literal">ignore_noble</tt> boolean disables the use of noble positions.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.units.getCasteProfessionName(race,caste,prof_id[,plural])</span></tt></p>
|
|
<p>Retrieves the profession name for the given race/caste using raws.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.units.getProfessionColor(unit[,ignore_noble])</span></tt></p>
|
|
<p>Retrieves the color associated with the profession, using noble assignments
|
|
or raws. The <tt class="docutils literal">ignore_noble</tt> boolean disables the use of noble positions.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.units.getCasteProfessionColor(race,caste,prof_id)</tt></p>
|
|
<p>Retrieves the profession color for the given race/caste using raws.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="items-module">
|
|
<h3><a class="toc-backref" href="#id22">Items module</a></h3>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.items.getPosition(item)</tt></p>
|
|
<p>Returns true <em>x,y,z</em> of the item, or <em>nil</em> if invalid; may be not equal to item.pos if in inventory.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.items.getDescription(item, type[, decorate])</tt></p>
|
|
<p>Returns the string description of the item, as produced by the getItemDescription
|
|
method. If decorate is true, also adds markings for quality and improvements.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.items.getGeneralRef(item, type)</tt></p>
|
|
<p>Searches for a general_ref with the given type.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.items.getSpecificRef(item, type)</tt></p>
|
|
<p>Searches for a specific_ref with the given type.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.items.getOwner(item)</tt></p>
|
|
<p>Returns the owner unit or <em>nil</em>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.items.setOwner(item,unit)</tt></p>
|
|
<p>Replaces the owner of the item. If unit is <em>nil</em>, removes ownership.
|
|
Returns <em>false</em> in case of error.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.items.getContainer(item)</tt></p>
|
|
<p>Returns the container item or <em>nil</em>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.items.getContainedItems(item)</tt></p>
|
|
<p>Returns a list of items contained in this one.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.items.moveToGround(item,pos)</tt></p>
|
|
<p>Move the item to the ground at position. Returns <em>false</em> if impossible.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.items.moveToContainer(item,container)</tt></p>
|
|
<p>Move the item to the container. Returns <em>false</em> if impossible.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.items.moveToBuilding(item,building,use_mode)</tt></p>
|
|
<p>Move the item to the building. Returns <em>false</em> if impossible.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.items.moveToInventory(item,unit,use_mode,body_part)</tt></p>
|
|
<p>Move the item to the unit inventory. Returns <em>false</em> if impossible.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.items.remove(item[, no_uncat])</tt></p>
|
|
<p>Removes the item, and marks it for garbage collection unless <tt class="docutils literal">no_uncat</tt> is true.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.items.makeProjectile(item)</tt></p>
|
|
<p>Turns the item into a projectile, and returns the new object, or <em>nil</em> if impossible.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="maps-module">
|
|
<h3><a class="toc-backref" href="#id23">Maps module</a></h3>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.maps.getSize()</tt></p>
|
|
<p>Returns map size in blocks: <em>x, y, z</em></p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.maps.getTileSize()</tt></p>
|
|
<p>Returns map size in tiles: <em>x, y, z</em></p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.maps.getBlock(x,y,z)</tt></p>
|
|
<p>Returns a map block object for given x,y,z in local block coordinates.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.maps.isValidTilePos(coords)</tt>, or isValidTilePos(x,y,z)``</p>
|
|
<p>Checks if the given df::coord or x,y,z in local tile coordinates are valid.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.maps.getTileBlock(coords)</tt>, or <tt class="docutils literal">getTileBlock(x,y,z)</tt></p>
|
|
<p>Returns a map block object for given df::coord or x,y,z in local tile coordinates.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.maps.ensureTileBlock(coords)</tt>, or <tt class="docutils literal">ensureTileBlock(x,y,z)</tt></p>
|
|
<p>Like <tt class="docutils literal">getTileBlock</tt>, but if the block is not allocated, try creating it.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.maps.getRegionBiome(region_coord2d)</tt>, or <tt class="docutils literal">getRegionBiome(x,y)</tt></p>
|
|
<p>Returns the biome info struct for the given global map region.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.maps.enableBlockUpdates(block[,flow,temperature])</span></tt></p>
|
|
<p>Enables updates for liquid flow or temperature, unless already active.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.maps.spawnFlow(pos,type,mat_type,mat_index,dimension)</tt></p>
|
|
<p>Spawns a new flow (i.e. steam/mist/dust/etc) at the given pos, and with
|
|
the given parameters. Returns it, or <em>nil</em> if unsuccessful.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.maps.getGlobalInitFeature(index)</tt></p>
|
|
<p>Returns the global feature object with the given index.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.maps.getLocalInitFeature(region_coord2d,index)</tt></p>
|
|
<p>Returns the local feature object with the given region coords and index.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.maps.getTileBiomeRgn(coords)</tt>, or <tt class="docutils literal">getTileBiomeRgn(x,y,z)</tt></p>
|
|
<p>Returns <em>x, y</em> for use with <tt class="docutils literal">getRegionBiome</tt>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.maps.canWalkBetween(pos1, pos2)</tt></p>
|
|
<p>Checks if a dwarf may be able to walk between the two tiles,
|
|
using a pathfinding cache maintained by the game. Note that
|
|
this cache is only updated when the game is unpaused, and thus
|
|
can get out of date if doors are forbidden or unforbidden, or
|
|
tools like liquids or tiletypes are used. It also cannot possibly
|
|
take into account anything that depends on the actual units, like
|
|
burrows, or the presence of invaders.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="burrows-module">
|
|
<h3><a class="toc-backref" href="#id24">Burrows module</a></h3>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.burrows.findByName(name)</tt></p>
|
|
<p>Returns the burrow pointer or <em>nil</em>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.burrows.clearUnits(burrow)</tt></p>
|
|
<p>Removes all units from the burrow.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.burrows.isAssignedUnit(burrow,unit)</tt></p>
|
|
<p>Checks if the unit is in the burrow.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.burrows.setAssignedUnit(burrow,unit,enable)</tt></p>
|
|
<p>Adds or removes the unit from the burrow.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.burrows.clearTiles(burrow)</tt></p>
|
|
<p>Removes all tiles from the burrow.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.burrows.listBlocks(burrow)</tt></p>
|
|
<p>Returns a table of map block pointers.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.burrows.isAssignedTile(burrow,tile_coord)</tt></p>
|
|
<p>Checks if the tile is in burrow.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.burrows.setAssignedTile(burrow,tile_coord,enable)</tt></p>
|
|
<p>Adds or removes the tile from the burrow. Returns <em>false</em> if invalid coords.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.burrows.isAssignedBlockTile(burrow,block,x,y)</tt></p>
|
|
<p>Checks if the tile within the block is in burrow.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.burrows.setAssignedBlockTile(burrow,block,x,y,enable)</tt></p>
|
|
<p>Adds or removes the tile from the burrow. Returns <em>false</em> if invalid coords.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="buildings-module">
|
|
<h3><a class="toc-backref" href="#id25">Buildings module</a></h3>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.buildings.setOwner(item,unit)</tt></p>
|
|
<p>Replaces the owner of the building. If unit is <em>nil</em>, removes ownership.
|
|
Returns <em>false</em> in case of error.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.buildings.getSize(building)</tt></p>
|
|
<p>Returns <em>width, height, centerx, centery</em>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.buildings.findAtTile(pos)</tt>, or <tt class="docutils literal">findAtTile(x,y,z)</tt></p>
|
|
<p>Scans the buildings for the one located at the given tile.
|
|
Does not work on civzones. Warning: linear scan if the map
|
|
tile indicates there are buildings at it.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.buildings.findCivzonesAt(pos)</tt>, or <tt class="docutils literal">findCivzonesAt(x,y,z)</tt></p>
|
|
<p>Scans civzones, and returns a lua sequence of those that touch
|
|
the given tile, or <em>nil</em> if none.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.buildings.getCorrectSize(width, height, type, subtype, custom, direction)</tt></p>
|
|
<p>Computes correct dimensions for the specified building type and orientation,
|
|
using width and height for flexible dimensions.
|
|
Returns <em>is_flexible, width, height, center_x, center_y</em>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.buildings.checkFreeTiles(pos,size[,extents,change_extents,allow_occupied])</span></tt></p>
|
|
<p>Checks if the rectangle defined by <tt class="docutils literal">pos</tt> and <tt class="docutils literal">size</tt>, and possibly extents,
|
|
can be used for placing a building. If <tt class="docutils literal">change_extents</tt> is true, bad tiles
|
|
are removed from extents. If <tt class="docutils literal">allow_occupied</tt>, the occupancy test is skipped.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.buildings.countExtentTiles(extents,defval)</tt></p>
|
|
<p>Returns the number of tiles included by extents, or defval.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.buildings.containsTile(building, x, y[, room])</tt></p>
|
|
<p>Checks if the building contains the specified tile, either directly, or as room.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.buildings.hasSupport(pos,size)</tt></p>
|
|
<p>Checks if a bridge constructed at specified position would have
|
|
support from terrain, and thus won't collapse if retracted.</p>
|
|
</li>
|
|
</ul>
|
|
<p>Low-level building creation functions;</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.buildings.allocInstance(pos, type, subtype, custom)</tt></p>
|
|
<p>Creates a new building instance of given type, subtype and custom type,
|
|
at specified position. Returns the object, or <em>nil</em> in case of an error.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.buildings.setSize(building, width, height, direction)</tt></p>
|
|
<p>Configures an object returned by <tt class="docutils literal">allocInstance</tt>, using specified
|
|
parameters wherever appropriate. If the building has fixed size along
|
|
any dimension, the corresponding input parameter will be ignored.
|
|
Returns <em>false</em> if the building cannot be placed, or <em>true, width,
|
|
height, rect_area, true_area</em>. Returned width and height are the
|
|
final values used by the building; true_area is less than rect_area
|
|
if any tiles were removed from designation.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.buildings.constructAbstract(building)</tt></p>
|
|
<p>Links a fully configured object created by <tt class="docutils literal">allocInstance</tt> into the
|
|
world. The object must be an abstract building, i.e. a stockpile or civzone.
|
|
Returns <em>true</em>, or <em>false</em> if impossible.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.buildings.constructWithItems(building, items)</tt></p>
|
|
<p>Links a fully configured object created by <tt class="docutils literal">allocInstance</tt> into the
|
|
world for construction, using a list of specific items as material.
|
|
Returns <em>true</em>, or <em>false</em> if impossible.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.buildings.constructWithFilters(building, job_items)</tt></p>
|
|
<p>Links a fully configured object created by <tt class="docutils literal">allocInstance</tt> into the
|
|
world for construction, using a list of job_item filters as inputs.
|
|
Returns <em>true</em>, or <em>false</em> if impossible. Filter objects are claimed
|
|
and possibly destroyed in any case.
|
|
Use a negative <tt class="docutils literal">quantity</tt> field value to auto-compute the amount
|
|
from the size of the building.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.buildings.deconstruct(building)</tt></p>
|
|
<p>Destroys the building, or queues a deconstruction job.
|
|
Returns <em>true</em> if the building was destroyed and deallocated immediately.</p>
|
|
</li>
|
|
</ul>
|
|
<p>More high-level functions are implemented in lua and can be loaded by
|
|
<tt class="docutils literal"><span class="pre">require('dfhack.buildings')</span></tt>. See <tt class="docutils literal">hack/lua/dfhack/buildings.lua</tt>.</p>
|
|
<p>Among them are:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.buildings.getFiltersByType(argtable,type,subtype,custom)</tt></p>
|
|
<p>Returns a sequence of lua structures, describing input item filters
|
|
suitable for the specified building type, or <em>nil</em> if unknown or invalid.
|
|
The returned sequence is suitable for use as the <tt class="docutils literal">job_items</tt> argument
|
|
of <tt class="docutils literal">constructWithFilters</tt>.
|
|
Uses tables defined in <tt class="docutils literal">buildings.lua</tt>.</p>
|
|
<p>Argtable members <tt class="docutils literal">material</tt> (the default name), <tt class="docutils literal">bucket</tt>, <tt class="docutils literal">barrel</tt>,
|
|
<tt class="docutils literal">chain</tt>, <tt class="docutils literal">mechanism</tt>, <tt class="docutils literal">screw</tt>, <tt class="docutils literal">pipe</tt>, <tt class="docutils literal">anvil</tt>, <tt class="docutils literal">weapon</tt> are used to
|
|
augment the basic attributes with more detailed information if the
|
|
building has input items with the matching name (see the tables for naming details).
|
|
Note that it is impossible to <em>override</em> any properties this way, only supply those that
|
|
are not mentioned otherwise; one exception is that flags2.non_economic
|
|
is automatically cleared if an explicit material is specified.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.buildings.constructBuilding{...}</span></tt></p>
|
|
<p>Creates a building in one call, using options contained
|
|
in the argument table. Returns the building, or <em>nil, error</em>.</p>
|
|
<p><strong>NOTE:</strong> Despite the name, unless the building is abstract,
|
|
the function creates it in an 'unconstructed' stage, with
|
|
a queued in-game job that will actually construct it. I.e.
|
|
the function replicates programmatically what can be done
|
|
through the construct building menu in the game ui, except
|
|
that it does less environment constraint checking.</p>
|
|
<p>The following options can be used:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">pos = coordinates</tt>, or <tt class="docutils literal">x = <span class="pre">...,</span> y = <span class="pre">...,</span> z = ...</tt></p>
|
|
<p>Mandatory. Specifies the left upper corner of the building.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">type = df.building_type.FOO, subtype = <span class="pre">...,</span> custom = ...</tt></p>
|
|
<p>Mandatory. Specifies the type of the building. Obviously, subtype
|
|
and custom are only expected if the type requires them.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">fields = { ... }</tt></p>
|
|
<p>Initializes fields of the building object after creation with <tt class="docutils literal">df.assign</tt>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">width = <span class="pre">...,</span> height = <span class="pre">...,</span> direction = ...</tt></p>
|
|
<p>Sets size and orientation of the building. If it is
|
|
fixed-size, specified dimensions are ignored.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">full_rectangle = true</tt></p>
|
|
<p>For buildings like stockpiles or farm plots that can normally
|
|
accomodate individual tile exclusion, forces an error if any
|
|
tiles within the specified width*height are obstructed.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">items = { item, item ... }</tt>, or <tt class="docutils literal">filters = { <span class="pre">{...},</span> <span class="pre">{...}...</span> }</tt></p>
|
|
<p>Specifies explicit items or item filters to use in construction.
|
|
It is the job of the user to ensure they are correct for the building type.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">abstract = true</tt></p>
|
|
<p>Specifies that the building is abstract and does not require construction.
|
|
Required for stockpiles and civzones; an error otherwise.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">material = <span class="pre">{...},</span> mechanism = <span class="pre">{...},</span> ...</tt></p>
|
|
<p>If none of <tt class="docutils literal">items</tt>, <tt class="docutils literal">filter</tt>, or <tt class="docutils literal">abstract</tt> is used,
|
|
the function uses <tt class="docutils literal">getFiltersByType</tt> to compute the input
|
|
item filters, and passes the argument table through. If no filters
|
|
can be determined this way, <tt class="docutils literal">constructBuilding</tt> throws an error.</p>
|
|
</li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="constructions-module">
|
|
<h3><a class="toc-backref" href="#id26">Constructions module</a></h3>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.constructions.designateNew(pos,type,item_type,mat_index)</tt></p>
|
|
<p>Designates a new construction at given position. If there already is
|
|
a planned but not completed construction there, changes its type.
|
|
Returns <em>true</em>, or <em>false</em> if obstructed.
|
|
Note that designated constructions are technically buildings.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.constructions.designateRemove(pos)</tt>, or <tt class="docutils literal">designateRemove(x,y,z)</tt></p>
|
|
<p>If there is a construction or a planned construction at the specified
|
|
coordinates, designates it for removal, or instantly cancels the planned one.
|
|
Returns <em>true, was_only_planned</em> if removed; or <em>false</em> if none found.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="screen-api">
|
|
<h3><a class="toc-backref" href="#id27">Screen API</a></h3>
|
|
<p>The screen module implements support for drawing to the tiled screen of the game.
|
|
Note that drawing only has any effect when done from callbacks, so it can only
|
|
be feasibly used in the core context.</p>
|
|
<p>Basic painting functions:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.screen.getWindowSize()</tt></p>
|
|
<p>Returns <em>width, height</em> of the screen.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.screen.getMousePos()</tt></p>
|
|
<p>Returns <em>x,y</em> of the tile the mouse is over.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.screen.inGraphicsMode()</tt></p>
|
|
<p>Checks if [GRAPHICS:YES] was specified in init.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.screen.paintTile(pen,x,y[,char,tile])</span></tt></p>
|
|
<p>Paints a tile using given parameters. Pen is a table with following possible fields:</p>
|
|
<dl class="docutils">
|
|
<dt><tt class="docutils literal">ch</tt></dt>
|
|
<dd><p class="first last">Provides the ordinary tile character, as either a 1-character string or a number.
|
|
Can be overridden with the <tt class="docutils literal">char</tt> function parameter.</p>
|
|
</dd>
|
|
<dt><tt class="docutils literal">fg</tt></dt>
|
|
<dd><p class="first last">Foreground color for the ordinary tile. Defaults to COLOR_GREY (7).</p>
|
|
</dd>
|
|
<dt><tt class="docutils literal">bg</tt></dt>
|
|
<dd><p class="first last">Background color for the ordinary tile. Defaults to COLOR_BLACK (0).</p>
|
|
</dd>
|
|
<dt><tt class="docutils literal">bold</tt></dt>
|
|
<dd><p class="first last">Bright/bold text flag. If <em>nil</em>, computed based on (fg & 8); fg is masked to 3 bits.
|
|
Otherwise should be <em>true/false</em>.</p>
|
|
</dd>
|
|
<dt><tt class="docutils literal">tile</tt></dt>
|
|
<dd><p class="first last">Graphical tile id. Ignored unless [GRAPHICS:YES] was in init.txt.</p>
|
|
</dd>
|
|
<dt><tt class="docutils literal">tile_color = true</tt></dt>
|
|
<dd><p class="first last">Specifies that the tile should be shaded with <em>fg/bg</em>.</p>
|
|
</dd>
|
|
<dt><tt class="docutils literal">tile_fg, tile_bg</tt></dt>
|
|
<dd><p class="first last">If specified, overrides <em>tile_color</em> and supplies shading colors directly.</p>
|
|
</dd>
|
|
</dl>
|
|
<p>Returns <em>false</em> if coordinates out of bounds, or other error.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.screen.readTile(x,y)</tt></p>
|
|
<p>Retrieves the contents of the specified tile from the screen buffers.
|
|
Returns a pen, or <em>nil</em> if invalid or TrueType.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.screen.paintString(pen,x,y,text)</tt></p>
|
|
<p>Paints the string starting at <em>x,y</em>. Uses the string characters
|
|
in sequence to override the <tt class="docutils literal">ch</tt> field of pen.</p>
|
|
<p>Returns <em>true</em> if painting at least one character succeeded.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.screen.fillRect(pen,x1,y1,x2,y2)</tt></p>
|
|
<p>Fills the rectangle specified by the coordinates with the given pen.
|
|
Returns <em>true</em> if painting at least one character succeeded.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.screen.findGraphicsTile(pagename,x,y)</tt></p>
|
|
<p>Finds a tile from a graphics set (i.e. the raws used for creatures),
|
|
if in graphics mode and loaded.</p>
|
|
<p>Returns: <em>tile, tile_grayscale</em>, or <em>nil</em> if not found.
|
|
The values can then be used for the <em>tile</em> field of <em>pen</em> structures.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.screen.clear()</tt></p>
|
|
<p>Fills the screen with blank background.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.screen.invalidate()</tt></p>
|
|
<p>Requests repaint of the screen by setting a flag. Unlike other
|
|
functions in this section, this may be used at any time.</p>
|
|
</li>
|
|
</ul>
|
|
<p>In order to actually be able to paint to the screen, it is necessary
|
|
to create and register a viewscreen (basically a modal dialog) with
|
|
the game.</p>
|
|
<p><strong>NOTE</strong>: As a matter of policy, in order to avoid user confusion, all
|
|
interface screens added by dfhack should bear the "DFHack" signature.</p>
|
|
<p>Screens are managed with the following functions:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.screen.show(screen[,below])</span></tt></p>
|
|
<p>Displays the given screen, possibly placing it below a different one.
|
|
The screen must not be already shown. Returns <em>true</em> if success.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.screen.dismiss(screen[,to_first])</span></tt></p>
|
|
<p>Marks the screen to be removed when the game enters its event loop.
|
|
If <tt class="docutils literal">to_first</tt> is <em>true</em>, all screens up to the first one will be deleted.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.screen.isDismissed(screen)</tt></p>
|
|
<p>Checks if the screen is already marked for removal.</p>
|
|
</li>
|
|
</ul>
|
|
<p>Apart from a native viewscreen object, these functions accept a table
|
|
as a screen. In this case, <tt class="docutils literal">show</tt> creates a new native viewscreen
|
|
that delegates all processing to methods stored in that table.</p>
|
|
<p><strong>NOTE</strong>: Lua-implemented screens are only supported in the core context.</p>
|
|
<p>Supported callbacks and fields are:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">screen._native</tt></p>
|
|
<p>Initialized by <tt class="docutils literal">show</tt> with a reference to the backing viewscreen
|
|
object, and removed again when the object is deleted.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">function screen:onShow()</tt></p>
|
|
<p>Called by <tt class="docutils literal">dfhack.screen.show</tt> if successful.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">function screen:onDismiss()</tt></p>
|
|
<p>Called by <tt class="docutils literal">dfhack.screen.dismiss</tt> if successful.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">function screen:onDestroy()</tt></p>
|
|
<p>Called from the destructor when the viewscreen is deleted.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">function screen:onResize(w, h)</tt></p>
|
|
<p>Called before <tt class="docutils literal">onRender</tt> or <tt class="docutils literal">onIdle</tt> when the window size has changed.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">function screen:onRender()</tt></p>
|
|
<p>Called when the viewscreen should paint itself. This is the only context
|
|
where the above painting functions work correctly.</p>
|
|
<p>If omitted, the screen is cleared; otherwise it should do that itself.
|
|
In order to make a see-through dialog, call <tt class="docutils literal">self._native.parent:render()</tt>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">function screen:onIdle()</tt></p>
|
|
<p>Called every frame when the screen is on top of the stack.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">function screen:onHelp()</tt></p>
|
|
<p>Called when the help keybinding is activated (usually '?').</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">function screen:onInput(keys)</tt></p>
|
|
<p>Called when keyboard or mouse events are available.
|
|
If any keys are pressed, the keys argument is a table mapping them to <em>true</em>.
|
|
Note that this refers to logical keybingings computed from real keys via
|
|
options; if multiple interpretations exist, the table will contain multiple keys.</p>
|
|
<p>The table also may contain special keys:</p>
|
|
<dl class="docutils">
|
|
<dt><tt class="docutils literal">_STRING</tt></dt>
|
|
<dd><p class="first last">Maps to an integer in range 0-255. Duplicates a separate "STRING_A???" code for convenience.</p>
|
|
</dd>
|
|
<dt><tt class="docutils literal">_MOUSE_L, _MOUSE_R</tt></dt>
|
|
<dd><p class="first last">If the left or right mouse button is pressed.</p>
|
|
</dd>
|
|
</dl>
|
|
<p>If this method is omitted, the screen is dismissed on receival of the <tt class="docutils literal">LEAVESCREEN</tt> key.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="internal-api">
|
|
<h3><a class="toc-backref" href="#id28">Internal API</a></h3>
|
|
<p>These functions are intended for the use by dfhack developers,
|
|
and are only documented here for completeness:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.internal.scripts</tt></p>
|
|
<p>The table used by <tt class="docutils literal">dfhack.run_script()</tt> to give every script its own
|
|
global environment, persistent between calls to the script.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.internal.getAddress(name)</tt></p>
|
|
<p>Returns the global address <tt class="docutils literal">name</tt>, or <em>nil</em>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.internal.setAddress(name, value)</tt></p>
|
|
<p>Sets the global address <tt class="docutils literal">name</tt>. Returns the value of <tt class="docutils literal">getAddress</tt> before the change.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.internal.getVTable(name)</tt></p>
|
|
<p>Returns the pre-extracted vtable address <tt class="docutils literal">name</tt>, or <em>nil</em>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.internal.getRebaseDelta()</tt></p>
|
|
<p>Returns the ASLR rebase offset of the DF executable.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.internal.getMemRanges()</tt></p>
|
|
<p>Returns a sequence of tables describing virtual memory ranges of the process.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.internal.patchMemory(dest,src,count)</tt></p>
|
|
<p>Like memmove below, but works even if dest is read-only memory, e.g. code.
|
|
If destination overlaps a completely invalid memory region, or another error
|
|
occurs, returns false.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.internal.memmove(dest,src,count)</tt></p>
|
|
<p>Wraps the standard memmove function. Accepts both numbers and refs as pointers.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.internal.memcmp(ptr1,ptr2,count)</tt></p>
|
|
<p>Wraps the standard memcmp function.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.internal.memscan(haystack,count,step,needle,nsize)</tt></p>
|
|
<p>Searches for <tt class="docutils literal">needle</tt> of <tt class="docutils literal">nsize</tt> bytes in <tt class="docutils literal">haystack</tt>,
|
|
using <tt class="docutils literal">count</tt> steps of <tt class="docutils literal">step</tt> bytes.
|
|
Returns: <em>step_idx, sum_idx, found_ptr</em>, or <em>nil</em> if not found.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.internal.diffscan(old_data, new_data, start_idx, end_idx, eltsize[, oldval, newval, delta])</tt></p>
|
|
<p>Searches for differences between buffers at ptr1 and ptr2, as integers of size eltsize.
|
|
The oldval, newval or delta arguments may be used to specify additional constraints.
|
|
Returns: <em>found_index</em>, or <em>nil</em> if end reached.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="core-interpreter-context">
|
|
<h2><a class="toc-backref" href="#id29">Core interpreter context</a></h2>
|
|
<p>While plugins can create any number of interpreter instances,
|
|
there is one special context managed by dfhack core. It is the
|
|
only context that can receive events from DF and plugins.</p>
|
|
<p>Core context specific functions:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.is_core_context</tt></p>
|
|
<p>Boolean value; <em>true</em> in the core context.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.timeout(time,mode,callback)</tt></p>
|
|
<p>Arranges for the callback to be called once the specified
|
|
period of time passes. The <tt class="docutils literal">mode</tt> argument specifies the
|
|
unit of time used, and may be one of <tt class="docutils literal">'frames'</tt> (raw FPS),
|
|
<tt class="docutils literal">'ticks'</tt> (unpaused FPS), <tt class="docutils literal">'days'</tt>, <tt class="docutils literal">'months'</tt>,
|
|
<tt class="docutils literal">'years'</tt> (in-game time). All timers other than
|
|
<tt class="docutils literal">'frames'</tt> are cancelled when the world is unloaded,
|
|
and cannot be queued until it is loaded again.
|
|
Returns the timer id, or <em>nil</em> if unsuccessful due to
|
|
world being unloaded.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.timeout_active(id[,new_callback])</span></tt></p>
|
|
<p>Returns the active callback with the given id, or <em>nil</em>
|
|
if inactive or nil id. If called with 2 arguments, replaces
|
|
the current callback with the given value, if still active.
|
|
Using <tt class="docutils literal">timeout_active(id,nil)</tt> cancels the timer.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.onStateChange.foo = function(code)</tt></p>
|
|
<p>Event. Receives the same codes as plugin_onstatechange in C++.</p>
|
|
</li>
|
|
</ul>
|
|
<div class="section" id="event-type">
|
|
<h3><a class="toc-backref" href="#id30">Event type</a></h3>
|
|
<p>An event is a native object transparently wrapping a lua table,
|
|
and implementing a __call metamethod. When it is invoked, it loops
|
|
through the table with next and calls all contained values.
|
|
This is intended as an extensible way to add listeners.</p>
|
|
<p>This type itself is available in any context, but only the
|
|
core context has the actual events defined by C++ code.</p>
|
|
<p>Features:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.event.new()</tt></p>
|
|
<p>Creates a new instance of an event.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">event[key] = function</tt></p>
|
|
<p>Sets the function as one of the listeners. Assign <em>nil</em> to remove it.</p>
|
|
<p><strong>NOTE</strong>: The <tt class="docutils literal">df.NULL</tt> key is reserved for the use by
|
|
the C++ owner of the event; it is an error to try setting it.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">#event</tt></p>
|
|
<p>Returns the number of non-nil listeners.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">pairs(event)</tt></p>
|
|
<p>Iterates over all listeners in the table.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">event(args...)</span></tt></p>
|
|
<p>Invokes all listeners contained in the event in an arbitrary
|
|
order using <tt class="docutils literal">dfhack.safecall</tt>.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="lua-modules">
|
|
<h1><a class="toc-backref" href="#id31">Lua Modules</a></h1>
|
|
<p>DFHack sets up the lua interpreter so that the built-in <tt class="docutils literal">require</tt>
|
|
function can be used to load shared lua code from hack/lua/.
|
|
The <tt class="docutils literal">dfhack</tt> namespace reference itself may be obtained via
|
|
<tt class="docutils literal"><span class="pre">require('dfhack')</span></tt>, although it is initially created as a
|
|
global by C++ bootstrap code.</p>
|
|
<p>The following module management functions are provided:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">mkmodule(name)</tt></p>
|
|
<p>Creates an environment table for the module. Intended to be used as:</p>
|
|
<pre class="literal-block">
|
|
local _ENV = mkmodule('foo')
|
|
...
|
|
return _ENV
|
|
</pre>
|
|
<p>If called the second time, returns the same table; thus providing reload support.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">reload(name)</tt></p>
|
|
<p>Reloads a previously <tt class="docutils literal">require</tt>-d module <em>"name"</em> from the file.
|
|
Intended as a help for module development.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.BASE_G</tt></p>
|
|
<p>This variable contains the root global environment table, which is
|
|
used as a base for all module and script environments. Its contents
|
|
should be kept limited to the standard Lua library and API described
|
|
in this document.</p>
|
|
</li>
|
|
</ul>
|
|
<div class="section" id="global-environment">
|
|
<h2><a class="toc-backref" href="#id32">Global environment</a></h2>
|
|
<p>A number of variables and functions are provided in the base global
|
|
environment by the mandatory init file dfhack.lua:</p>
|
|
<ul>
|
|
<li><p class="first">Color constants</p>
|
|
<p>These are applicable both for <tt class="docutils literal">dfhack.color()</tt> and color fields
|
|
in DF functions or structures:</p>
|
|
<p>COLOR_RESET, COLOR_BLACK, COLOR_BLUE, COLOR_GREEN, COLOR_CYAN,
|
|
COLOR_RED, COLOR_MAGENTA, COLOR_BROWN, COLOR_GREY, COLOR_DARKGREY,
|
|
COLOR_LIGHTBLUE, COLOR_LIGHTGREEN, COLOR_LIGHTCYAN, COLOR_LIGHTRED,
|
|
COLOR_LIGHTMAGENTA, COLOR_YELLOW, COLOR_WHITE</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">dfhack.onStateChange</tt> event codes</p>
|
|
<p>Available only in the core context, as is the event itself:</p>
|
|
<p>SC_WORLD_LOADED, SC_WORLD_UNLOADED, SC_MAP_LOADED,
|
|
SC_MAP_UNLOADED, SC_VIEWSCREEN_CHANGED, SC_CORE_INITIALIZED</p>
|
|
</li>
|
|
<li><p class="first">Functions already described above</p>
|
|
<p>safecall, qerror, mkmodule, reload</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">printall(obj)</tt></p>
|
|
<p>If the argument is a lua table or DF object reference, prints all fields.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">copyall(obj)</tt></p>
|
|
<p>Returns a shallow copy of the table or reference as a lua table.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">pos2xyz(obj)</tt></p>
|
|
<p>The object must have fields x, y and z. Returns them as 3 values.
|
|
If obj is <em>nil</em>, or x is -30000 (the usual marker for undefined
|
|
coordinates), returns <em>nil</em>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">xyz2pos(x,y,z)</tt></p>
|
|
<p>Returns a table with x, y and z as fields.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">safe_index(obj,index...)</span></tt></p>
|
|
<p>Walks a sequence of dereferences, which may be represented by numbers or strings.
|
|
Returns <em>nil</em> if any of obj or indices is <em>nil</em>, or a numeric index is out of array bounds.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="utils">
|
|
<h2><a class="toc-backref" href="#id33">utils</a></h2>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">utils.compare(a,b)</tt></p>
|
|
<p>Comparator function; returns <em>-1</em> if a<b, <em>1</em> if a>b, <em>0</em> otherwise.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">utils.compare_name(a,b)</tt></p>
|
|
<p>Comparator for names; compares empty string last.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">utils.is_container(obj)</tt></p>
|
|
<p>Checks if obj is a container ref.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">utils.make_index_sequence(start,end)</tt></p>
|
|
<p>Returns a lua sequence of numbers in start..end.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">utils.make_sort_order(data, ordering)</tt></p>
|
|
<p>Computes a sorted permutation of objects in data, as a table of integer
|
|
indices into the data sequence. Uses <tt class="docutils literal">data.n</tt> as input length
|
|
if present.</p>
|
|
<p>The ordering argument is a sequence of ordering specs, represented
|
|
as lua tables with following possible fields:</p>
|
|
<dl class="docutils">
|
|
<dt>ord.key = <em>function(value)</em></dt>
|
|
<dd><p class="first last">Computes comparison key from input data value. Not called on nil.
|
|
If omitted, the comparison key is the value itself.</p>
|
|
</dd>
|
|
<dt>ord.key_table = <em>function(data)</em></dt>
|
|
<dd><p class="first last">Computes a key table from the data table in one go.</p>
|
|
</dd>
|
|
<dt>ord.compare = <em>function(a,b)</em></dt>
|
|
<dd><p class="first last">Comparison function. Defaults to <tt class="docutils literal">utils.compare</tt> above.
|
|
Called on non-nil keys; nil sorts last.</p>
|
|
</dd>
|
|
<dt>ord.nil_first = <em>true/false</em></dt>
|
|
<dd><p class="first last">If true, nil keys are sorted first instead of last.</p>
|
|
</dd>
|
|
<dt>ord.reverse = <em>true/false</em></dt>
|
|
<dd><p class="first last">If true, sort non-nil keys in descending order.</p>
|
|
</dd>
|
|
</dl>
|
|
<p>For every comparison during sorting the specs are applied in
|
|
order until an unambiguous decision is reached. Sorting is stable.</p>
|
|
<p>Example of sorting a sequence by field foo:</p>
|
|
<pre class="literal-block">
|
|
local spec = { key = function(v) return v.foo end }
|
|
local order = utils.make_sort_order(data, { spec })
|
|
local output = {}
|
|
for i = 1,#order do output[i] = data[order[i]] end
|
|
</pre>
|
|
<p>Separating the actual reordering of the sequence in this
|
|
way enables applying the same permutation to multiple arrays.
|
|
This function is used by the sort plugin.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">utils.assign(tgt, src)</tt></p>
|
|
<p>Does a recursive assignment of src into tgt.
|
|
Uses <tt class="docutils literal">df.assign</tt> if tgt is a native object ref; otherwise
|
|
recurses into lua tables.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">utils.clone(obj, deep)</tt></p>
|
|
<p>Performs a shallow, or semi-deep copy of the object as a lua table tree.
|
|
The deep mode recurses into lua tables and subobjects, except pointers
|
|
to other heap objects.
|
|
Null pointers are represented as df.NULL. Zero-based native containers
|
|
are converted to 1-based lua sequences.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">utils.clone_with_default(obj, default, force)</tt></p>
|
|
<p>Copies the object, using the <tt class="docutils literal">default</tt> lua table tree
|
|
as a guide to which values should be skipped as uninteresting.
|
|
The <tt class="docutils literal">force</tt> argument makes it always return a non-<em>nil</em> value.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">utils.sort_vector(vector,field,cmpfun)</tt></p>
|
|
<p>Sorts a native vector or lua sequence using the comparator function.
|
|
If <tt class="docutils literal">field</tt> is not <em>nil</em>, applies the comparator to the field instead
|
|
of the whole object.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">utils.binsearch(vector,key,field,cmpfun,min,max)</tt></p>
|
|
<p>Does a binary search in a native vector or lua sequence for
|
|
<tt class="docutils literal">key</tt>, using <tt class="docutils literal">cmpfun</tt> and <tt class="docutils literal">field</tt> like sort_vector.
|
|
If <tt class="docutils literal">min</tt> and <tt class="docutils literal">max</tt> are specified, they are used as the
|
|
search subrange bounds.</p>
|
|
<p>If found, returns <em>item, true, idx</em>. Otherwise returns
|
|
<em>nil, false, insert_idx</em>, where <em>insert_idx</em> is the correct
|
|
insertion point.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">utils.insert_sorted(vector,item,field,cmpfun)</tt></p>
|
|
<p>Does a binary search, and inserts item if not found.
|
|
Returns <em>did_insert, vector[idx], idx</em>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">utils.insert_or_update(vector,item,field,cmpfun)</tt></p>
|
|
<p>Like <tt class="docutils literal">insert_sorted</tt>, but also assigns the item into
|
|
the vector cell if insertion didn't happen.</p>
|
|
<p>As an example, you can use this to set skill values:</p>
|
|
<pre class="literal-block">
|
|
utils.insert_or_update(soul.skills, {new=true, id=..., rating=...}, 'id')
|
|
</pre>
|
|
<p>(For an explanation of <tt class="docutils literal">new=true</tt>, see table assignment in the wrapper section)</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">utils.prompt_yes_no(prompt, default)</tt></p>
|
|
<p>Presents a yes/no prompt to the user. If <tt class="docutils literal">default</tt> is not <em>nil</em>,
|
|
allows just pressing Enter to submit the default choice.
|
|
If the user enters <tt class="docutils literal">'abort'</tt>, throws an error.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">utils.prompt_input(prompt, checkfun, quit_str)</tt></p>
|
|
<p>Presents a prompt to input data, until a valid string is entered.
|
|
Once <tt class="docutils literal">checkfun(input)</tt> returns <em>true, ...</em>, passes the values
|
|
through. If the user enters the quit_str (defaults to <tt class="docutils literal"><span class="pre">'~~~'</span></tt>),
|
|
throws an error.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">utils.check_number(text)</tt></p>
|
|
<p>A <tt class="docutils literal">prompt_input</tt> <tt class="docutils literal">checkfun</tt> that verifies a number input.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="dumper">
|
|
<h2><a class="toc-backref" href="#id34">dumper</a></h2>
|
|
<p>A third-party lua table dumper module from
|
|
<a class="reference external" href="http://lua-users.org/wiki/DataDumper">http://lua-users.org/wiki/DataDumper</a>. Defines one
|
|
function:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">dumper.DataDumper(value, varname, fastmode, ident, indent_step)</tt></p>
|
|
<p>Returns <tt class="docutils literal">value</tt> converted to a string. The <tt class="docutils literal">indent_step</tt>
|
|
argument specifies the indentation step size in spaces. For
|
|
the other arguments see the original documentation link above.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="plugins">
|
|
<h1><a class="toc-backref" href="#id35">Plugins</a></h1>
|
|
<p>DFHack plugins may export native functions and events
|
|
to lua contexts. They are automatically imported by
|
|
<tt class="docutils literal"><span class="pre">mkmodule('plugins.<name>')</span></tt>; this means that a lua
|
|
module file is still necessary for <tt class="docutils literal">require</tt> to read.</p>
|
|
<p>The following plugins have lua support.</p>
|
|
<div class="section" id="burrows">
|
|
<h2><a class="toc-backref" href="#id36">burrows</a></h2>
|
|
<p>Implements extended burrow manipulations.</p>
|
|
<p>Events:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">onBurrowRename.foo = function(burrow)</tt></p>
|
|
<p>Emitted when a burrow might have been renamed either through
|
|
the game UI, or <tt class="docutils literal">renameBurrow()</tt>.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">onDigComplete.foo = function(job_type,pos,old_tiletype,new_tiletype,worker)</tt></p>
|
|
<p>Emitted when a tile might have been dug out. Only tracked if the
|
|
auto-growing burrows feature is enabled.</p>
|
|
</li>
|
|
</ul>
|
|
<p>Native functions:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal">renameBurrow(burrow,name)</tt></p>
|
|
<p>Renames the burrow, emitting <tt class="docutils literal">onBurrowRename</tt> and updating auto-grow state properly.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">findByName(burrow,name)</tt></p>
|
|
<p>Finds a burrow by name, using the same rules as the plugin command line interface.
|
|
Namely, trailing <tt class="docutils literal">'+'</tt> characters marking auto-grow burrows are ignored.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">copyUnits(target,source,enable)</tt></p>
|
|
<p>Applies units from <tt class="docutils literal">source</tt> burrow to <tt class="docutils literal">target</tt>. The <tt class="docutils literal">enable</tt>
|
|
parameter specifies if they are to be added or removed.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">copyTiles(target,source,enable)</tt></p>
|
|
<p>Applies tiles from <tt class="docutils literal">source</tt> burrow to <tt class="docutils literal">target</tt>. The <tt class="docutils literal">enable</tt>
|
|
parameter specifies if they are to be added or removed.</p>
|
|
</li>
|
|
<li><p class="first"><tt class="docutils literal">setTilesByKeyword(target,keyword,enable)</tt></p>
|
|
<p>Adds or removes tiles matching a predefined keyword. The keyword
|
|
set is the same as used by the command line.</p>
|
|
</li>
|
|
</ul>
|
|
<p>The lua module file also re-exports functions from <tt class="docutils literal">dfhack.burrows</tt>.</p>
|
|
</div>
|
|
<div class="section" id="sort">
|
|
<h2><a class="toc-backref" href="#id37">sort</a></h2>
|
|
<p>Does not export any native functions as of now. Instead, it
|
|
calls lua code to perform the actual ordering of list items.</p>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="scripts">
|
|
<h1><a class="toc-backref" href="#id38">Scripts</a></h1>
|
|
<p>Any files with the .lua extension placed into hack/scripts/*
|
|
are automatically used by the DFHack core as commands. The
|
|
matching command name consists of the name of the file sans
|
|
the extension.</p>
|
|
<p>If the first line of the script is a one-line comment, it is
|
|
used by the built-in <tt class="docutils literal">ls</tt> and <tt class="docutils literal">help</tt> commands.</p>
|
|
<p><strong>NOTE:</strong> Scripts placed in subdirectories still can be accessed, but
|
|
do not clutter the <tt class="docutils literal">ls</tt> command list; thus it is preferred
|
|
for obscure developer-oriented scripts and scripts used by tools.
|
|
When calling such scripts, always use '/' as the separator for
|
|
directories, e.g. <tt class="docutils literal"><span class="pre">devel/lua-example</span></tt>.</p>
|
|
<p>Scripts are re-read from disk every time they are used
|
|
(this may be changed later to check the file change time); however
|
|
the global variable values persist in memory between calls.
|
|
Every script gets its own separate environment for global
|
|
variables.</p>
|
|
<p>Arguments are passed in to the scripts via the <strong>...</strong> built-in
|
|
quasi-variable; when the script is called by the DFHack core,
|
|
they are all guaranteed to be non-nil strings.</p>
|
|
<p>DFHack core invokes the scripts in the <em>core context</em> (see above);
|
|
however it is possible to call them from any lua code (including
|
|
from other scripts) in any context, via the same function the core uses:</p>
|
|
<ul>
|
|
<li><p class="first"><tt class="docutils literal"><span class="pre">dfhack.run_script(name[,args...])</span></tt></p>
|
|
<p>Run a lua script in hack/scripts/, as if it was started from dfhack command-line.
|
|
The <tt class="docutils literal">name</tt> argument should be the name stem, as would be used on the command line.</p>
|
|
</li>
|
|
</ul>
|
|
<p>Note that this function lets errors propagate to the caller.</p>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html>
|