include/core/lua.hpp

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