include/core/lua.hpp

   1 #ifndef _lua__hpp__included__
   2 #define _lua__hpp__included__
   3
   4 #include "core/controllerframe.hpp"
   5 #include "core/keymapper.hpp"
   6 #include "core/render.hpp"
   7
   8 struct lua_State;
   9
  10 /**
  11  * Function implemented in C++ exported to Lua.
  12  */
  13 class lua_function
  14 {
  15 public:
  16 /**
  17  * Register function.
  18  */
  19         lua_function(const std::string& name) throw(std::bad_alloc);
  20 /**
  21  * Unregister function.
  22  */
  23         virtual ~lua_function() throw();
  24
  25 /**
  26  * Invoke function.
  27  */
  28         virtual int invoke(lua_State* L) = 0;
  29 protected:
  30         std::string fname;
  31 };
  32
  33 /**
  34  * Register function pointer as lua function.
  35  */
  36 class function_ptr_luafun : public lua_function
  37 {
  38 public:
  39 /**
  40  * Register.
  41  */
  42         function_ptr_luafun(const std::string& name, int (*_fn)(lua_State* L, const std::string& fname))
  43                 : lua_function(name)
  44         {
  45                 fn = _fn;
  46         }
  47 /**
  48  * Invoke function.
  49  */
  50         int invoke(lua_State* L)
  51         {
  52                 return fn(L, fname);
  53         }
  54 private:
  55         int (*fn)(lua_State* L, const std::string& fname);
  56 };
  57
  58 struct lua_render_context
  59 {
  60         uint32_t left_gap;
  61         uint32_t right_gap;
  62         uint32_t top_gap;
  63         uint32_t bottom_gap;
  64         struct render_queue* queue;
  65         uint32_t width;
  66         uint32_t height;
  67 };
  68
  69 void init_lua() throw();
  70 void quit_lua() throw();
  71 void lua_callback_do_paint(struct lua_render_context* ctx) throw();
  72 void lua_callback_do_video(struct lua_render_context* ctx) throw();
  73 void lua_callback_do_input(controller_frame& data, bool subframe) throw();
  74 void lua_callback_do_reset() throw();
  75 void lua_callback_do_frame() throw();
  76 void lua_callback_do_readwrite() throw();
  77 void lua_callback_startup() throw();
  78 void lua_callback_pre_load(const std::string& name) throw();
  79 void lua_callback_err_load(const std::string& name) throw();
  80 void lua_callback_post_load(const std::string& name, bool was_state) throw();
  81 void lua_callback_pre_save(const std::string& name, bool is_state) throw();
  82 void lua_callback_err_save(const std::string& name) throw();
  83 void lua_callback_post_save(const std::string& name, bool is_state) throw();
  84 void lua_callback_snoop_input(uint32_t port, uint32_t controller, uint32_t index, short value) throw();
  85 void lua_callback_quit() throw();
  86 void lua_callback_keyhook(const std::string& key, const struct keygroup::parameters& p) throw();
  87
  88 extern bool lua_supported;
  89 extern bool lua_requests_repaint;
  90 extern bool lua_requests_subframe_paint;
  91
  92 #endif