5 files changed, 40 insertions, 19 deletions
diff --git a/src/lua/core/luaopen_core.cpp b/src/lua/core/luaopen_core.cpp
index 42de91b..54af3c0 100644
--- a/src/lua/core/luaopen_core.cpp
+++ b/src/lua/core/luaopen_core.cpp
@@ -1,14 +1,16 @@
 #include "libs/luax/luax.h"
 #include "core/game.h"
-using namespace jin::core; 
+
 namespace jin
 {
 namespace lua
 {
+    using namespace jin::core; 
+
     static int l_running(lua_State* L)
     {
-        bool r = Game::get()->running();
-        luax_pushboolean(L, r); 
+        bool running = Game::get()->running();
+        luax_pushboolean(L, running); 
         return 1; 
     }
 
diff --git a/src/lua/graphics/luaopen_Canvas.cpp b/src/lua/graphics/luaopen_Canvas.cpp
index edcd1ae..88d6e09 100644
--- a/src/lua/graphics/luaopen_Canvas.cpp
+++ b/src/lua/graphics/luaopen_Canvas.cpp
@@ -1,28 +1,36 @@
 #include "libs/luax/luax.h"
 #include "../luaopen_types.h"
 #include "render/canvas.h"
-using namespace jin::render;
+
 namespace jin
 {
 namespace lua
 {
+
+    using namespace jin::render;
+
+    static inline Canvas* checkCanvas(lua_State* L)
+    {
+        return (Canvas*)luax_checktype(L, 1, TYPE_CANVAS);
+    }
+
     static int l_getWidth(lua_State* L)
     {
-        Canvas* c = (Canvas*)luax_checktype(L, 1, TYPE_CANVAS);
+        Canvas* c = checkCanvas(L);
         luax_pushnumber(L, c->getWidth());
         return 1;
     }
 
     static int l_getHeight(lua_State* L)
     {
-        Canvas* c = (Canvas*)luax_checktype(L, 1, TYPE_CANVAS);
+        Canvas* c = checkCanvas(L);
         luax_pushnumber(L, c->getHeight());
         return 1;
     }
 
     static int l_getSize(lua_State* L)
     {
-        Canvas* c = (Canvas*)luax_checktype(L, 1, TYPE_CANVAS);
+        Canvas* c = checkCanvas(L);
         luax_pushnumber(L, c->getWidth());
         luax_pushnumber(L, c->getHeight());
         return 2;
@@ -30,7 +38,7 @@ namespace lua
 
     static int l_setAnchor(lua_State* L)
     {
-        Canvas* c = (Canvas*)luax_checktype(L, 1, TYPE_CANVAS);
+        Canvas* c = checkCanvas(L);
         int x = luax_checknumber(L, 1); 
         int y = luax_checknumber(L, 2);
         c->setAnchor(x, y);
@@ -57,5 +65,6 @@ namespace lua
         luax_newtype(L, TYPE_CANVAS, f);
         return 0;
     }
-}
-}
-\ No newline at end of file
+
+}// lua
+}// jin 
+\ No newline at end of file
diff --git a/src/lua/graphics/luaopen_Image.cpp b/src/lua/graphics/luaopen_Image.cpp
index 2637db9..b25dcc8 100644
--- a/src/lua/graphics/luaopen_Image.cpp
+++ b/src/lua/graphics/luaopen_Image.cpp
@@ -9,23 +9,28 @@ namespace jin
 namespace lua
 {
 
+    static inline Image* checkImage(lua_State* L)
+    {
+        return (Image*)luax_checktype(L, 1, TYPE_IMAGE);
+    }
+
     static int l_getWidth(lua_State* L)
     {
-        Image* i = (Image*)luax_checktype(L, 1, TYPE_IMAGE);
+        Image* i = checkImage(L);
         luax_pushnumber(L, i->getWidth()); 
         return 1; 
     }
 
     static int l_getHeight(lua_State *L)
     {
-        Image* i = (Image*)luax_checktype(L, 1, TYPE_IMAGE);
+        Image* i = checkImage(L);
         luax_pushnumber(L, i->getHeight());
         return 1;
     }
 
     static int l_getPixel(lua_State* L)
     {
-        Image* i = (Image*)luax_checktype(L, 1, TYPE_IMAGE);
+        Image* i = checkImage(L);
         int x = luax_checknumber(L, 2); 
         int y = luax_checknumber(L, 3);
         color c = i->getPixel(x, y); 
@@ -38,7 +43,7 @@ namespace lua
 
     static int l_setAnchor(lua_State* L)
     {
-        Image* i = (Image*)luax_checktype(L, 1, TYPE_IMAGE);
+        Image* i = checkImage(L);
         int x = luax_checknumber(L, 2); 
         int y = luax_checknumber(L, 3); 
         i->setAnchor(x, y);
@@ -47,7 +52,7 @@ namespace lua
 
     static int l_getSize(lua_State* L)
     {
-        Image* i = (Image*)luax_checktype(L, 1, TYPE_IMAGE);
+        Image* i = checkImage(L);
         luax_pushnumber(L, i->getWidth());
         luax_pushnumber(L, i->getHeight());
         return 2;
diff --git a/src/lua/graphics/luaopen_JSL.cpp b/src/lua/graphics/luaopen_JSL.cpp
index 19fa285..d1d3bac 100644
--- a/src/lua/graphics/luaopen_JSL.cpp
+++ b/src/lua/graphics/luaopen_JSL.cpp
@@ -5,9 +5,15 @@ namespace jin
 {
 namespace lua
 {
+
     using namespace render;  
 
-    enum VARIABLE_TYPE
+    static inline JSLProgram* checkJSLProgram(lua_State* L)
+    {
+        return (JSLProgram*)luax_checktype(L, 1, TYPE_JSL);
+    }
+
+    static enum VARIABLE_TYPE
     {
         INVALID = 0,
         NUMBER , 
@@ -29,7 +35,7 @@ namespace lua
     */
     static int l_send(lua_State* L)
     {
-        JSLProgram* jsl = (JSLProgram*)luax_checktype(L, 1, TYPE_JSL);
+        JSLProgram* jsl = checkJSLProgram(L);
         // number Image Texel
         const char* typestr = luax_checkstring(L, 2);
         // variable name 
diff --git a/src/lua/graphics/luaopen_graphics.cpp b/src/lua/graphics/luaopen_graphics.cpp
index 8ddd455..009b1bd 100644
--- a/src/lua/graphics/luaopen_graphics.cpp
+++ b/src/lua/graphics/luaopen_graphics.cpp
@@ -1,5 +1,4 @@
-#include <SDL2/SDL.h>
-
+#include "utils/macros.h"
 #include "libs/luax/luax.h"
 
 #include "render/image.h"