expose basic buildingplan functionality to Lua

plugins/CMakeLists.txt

@@ -96,7 +96,7 @@ if(BUILD_SUPPORTED)
     dfhack_plugin(blueprint blueprint.cpp LINK_LIBRARIES lua)
     dfhack_plugin(burrows burrows.cpp LINK_LIBRARIES lua)
     dfhack_plugin(building-hacks building-hacks.cpp LINK_LIBRARIES lua)
-    dfhack_plugin(buildingplan buildingplan.cpp LINK_LIBRARIES buildingplan-lib)
+    dfhack_plugin(buildingplan buildingplan.cpp LINK_LIBRARIES lua buildingplan-lib)
     dfhack_plugin(changeitem changeitem.cpp)
     dfhack_plugin(changelayer changelayer.cpp)
     dfhack_plugin(changevein changevein.cpp)

plugins/buildingplan-lib.cpp

@@ -623,11 +623,6 @@ bool Planner::allocatePlannedBuilding(df::building_type type)
         return false;
     }
 
-    for (auto iter = newinst->jobs.begin(); iter != newinst->jobs.end(); iter++)
-    {
-        (*iter)->flags.bits.suspend = true;
-    }
-
     if (type == building_type::Door)
     {
         auto door = virtual_cast<df::building_doorst>(newinst);

plugins/buildingplan-lib.h

@@ -403,6 +403,11 @@ public:
 
     void addPlannedBuilding(df::building *bld)
     {
+        for (auto iter = bld->jobs.begin(); iter != bld->jobs.end(); iter++)
+        {
+            (*iter)->flags.bits.suspend = true;
+        }
+
         PlannedBuilding pb(bld, &default_item_filters[bld->getType()]);
         planned_buildings.push_back(pb);
     }

plugins/buildingplan.cpp

@@ -1,3 +1,4 @@
+#include "LuaTools.h"
 #include "buildingplan-lib.h"
 
 DFHACK_PLUGIN("buildingplan");
@@ -414,3 +415,24 @@ DFhackCExport command_result plugin_onstatechange(color_ostream &out, state_chan
 
     return CR_OK;
 }
+
+// Lua API section
+
+static bool isPlannableBuilding(df::building_type type) {
+    return planner.isPlanableBuilding(type);
+}
+
+static void addPlannedBuilding(df::building *bld) {
+    planner.addPlannedBuilding(bld);
+}
+
+static void doCycle() {
+    planner.doCycle();
+}
+
+DFHACK_PLUGIN_LUA_FUNCTIONS {
+    DFHACK_LUA_FUNCTION(isPlannableBuilding),
+    DFHACK_LUA_FUNCTION(addPlannedBuilding),
+    DFHACK_LUA_FUNCTION(doCycle),
+    DFHACK_LUA_END
+};

plugins/lua/buildingplan.lua

@@ -0,0 +1,3 @@
+local _ENV = mkmodule('plugins.buildingplan')
+
+return _ENV