Working lua integration.

assets/Makefile

@@ -9,6 +9,9 @@ ASSETS := \
   maps/dungeon_entry.map \
   maps/dungeon_room_1.map
 
+LUA_SOURCES := \
+  enemy_system.lua
+
 OBJECTS := $(ASSETS:%=$(BUILD_DIR)/$(notdir $(ASSETS_DIR))/%.o)
 
 ifeq ($(TOTAL_BUILD_FILES),)

src/components/components.def

@@ -6,10 +6,12 @@
 COMPONENT(TRANSFORM_COMPONENT, transform_component, DRAW)
 COMPONENT(HITBOX_COMPONENT,    hitbox_component,    DRAW)
 COMPONENT(INTERACT_COMPONENT,  interact_component,   DRAW)
+COMPONENT(LUA_COMPONENT,       lua_component,       DRAW)
 #else
 COMPONENT(TRANSFORM_COMPONENT, transform_component, NO_DRAW)
 COMPONENT(HITBOX_COMPONENT,    hitbox_component,    NO_DRAW)
 COMPONENT(INTERACT_COMPONENT,  interact_component,   NO_DRAW)
+COMPONENT(LUA_COMPONENT,       lua_component,       NO_DRAW)
 #endif // DEBUG >= 2
 
 COMPONENT(PHYSICS_SYSTEM,      physics_system,      NO_DRAW)
@@ -18,7 +20,6 @@ COMPONENT(ANIMATION_SYSTEM,    animation_system,    NO_DRAW)
 COMPONENT(PLAYER_SYSTEM,       player_system,       NO_DRAW)
 COMPONENT(LEVER_COMPONENT,     lever_component,     NO_DRAW)
 COMPONENT(DOOR_COMPONENT,      door_component,      NO_DRAW)
-// COMPONENT(LUA_COMPONENT,       lua_component,       NO_DRAW)
 // Add new components definition here
 
 #undef COMPONENT

src/components/lua_component.c

@@ -1,6 +1,51 @@
-#ifndef LUA_COMPONENT_H
-#define LUA_COMPONENT_H
+#include "lua_component.h"
 
+#include <lua.h>
+#include <lauxlib.h>
+#include <lualib.h>
+#include "game.h"
+#include "ecs.h"
+#include "memory_alloc.h"
+#include "errors.h"
 
+inline int lua_component_init(component_t *component)
+{
+    lua_component_data_t *component_data = component->data;
 
-#endif // LUA_COMPONENT_H
+    component_data->lua_state = luaL_newstate();
+
+    luaL_openlibs(component_data->lua_state);
+
+    luaL_dostring(component_data->lua_state, "function f (a) print(a) end");
+
+    return EXIT_SUCCESS;
+}
+
+inline int lua_component_update(component_t *component __attribute__((unused)))
+{
+    lua_component_data_t *component_data = component->data;
+
+    luaL_dostring(component_data->lua_state, "f(\"prout\")");
+
+    return EXIT_SUCCESS;
+}
+
+#if DEBUG >= 2
+#include "display.h"
+
+inline int lua_component_draw(const component_t *component)
+{
+    return EXIT_SUCCESS;
+}
+#endif // DEBUG >= 2
+
+inline int lua_component_destroy(component_t *component)
+{
+    lua_component_data_t *component_data = component->data;
+
+    lua_close(component_data->lua_state);
+
+    free(component_data);
+
+    return EXIT_SUCCESS;
+}

src/components/lua_component.h

@@ -0,0 +1,19 @@
+#ifndef LUA_COMPONENT_H
+#define LUA_COMPONENT_H
+
+#include "ecs.h"
+#include "lua.h"
+#include "errors.h"
+
+typedef struct lua_component_data_t {
+    lua_State *lua_state;
+} lua_component_data_t;
+
+int lua_component_init(component_t *component);
+int lua_component_update(component_t *component);
+#if DEBUG >= 2
+int lua_component_draw(const component_t *component);
+#endif // DEBUG >= 2
+int lua_component_destroy(component_t *component);
+
+#endif // LUA_COMPONENT_H

src/game.c

@@ -21,7 +21,7 @@ int game_init(void)
     entity_manager_init();
     if(asset_manager_init()) return_failure_int;
 
-    asset_t *map_asset = asset_manager_load_asset("dungeon_room_1", ASSET_MAP);
+    asset_t *map_asset = asset_manager_load_asset("dungeon_entry", ASSET_MAP);
     if(!map_asset) return_failure_int;
 
     game.map = map_asset->data;
@@ -119,6 +119,14 @@ int game_init(void)
         if(!entity_new_component(player_entity, PLAYER_SYSTEM))  return_failure_int;
     }
 
+    /* ======== Enemy ======== */
+    {
+        entity_t *enemy_entity = entity_manager_new_entity(1);
+        if(!enemy_entity) return_failure_int;
+
+        if(!entity_new_component(enemy_entity, LUA_COMPONENT))  return_failure_int;
+    }
+
     game.is_running = true;
 
     return EXIT_SUCCESS;