Specifically, any "if (verbose) { Core::printerr("blah") }" kind
of stuff definitely doesn't belong in the common API functions.
Also, ref->getUnit() is very expensive.
On the other hand, checks for crash-inducing conflicts with the
ui should be in the core api, and not in client plugins.
- To ensure reload safety functions have to be wrapped. Every call
checks the loaded state and locks a mutex in Plugin. If the plugin
is unloaded, calling its functions throws a lua error. Therefore,
plugins may not create closures or export yieldable functions.
- The set of function argument and return types supported by
LuaWrapper is severely limited when compared to being compiled
inside the main library.
Currently supported types: numbers, bool, std::string, df::foo,
df::foo*, std::vector<bool>, std::vector<df::foo*>.
- To facilitate postponing initialization until after all plugins
have been loaded, the core sends a SC_CORE_INITIALIZED event.
- As an example, the burrows plugin now exports its functions.
Alexander Gavrilov