From f48dc493b5b77fd4e4472dd6c78b7542a4884129 Mon Sep 17 00:00:00 2001
From: Determinant <ted.sybil@gmail.com>
Date: Thu, 14 May 2015 15:01:55 +0800
Subject: add basic matrix implementation

---
 oop_example.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

(limited to 'oop_example.c')

diff --git a/oop_example.c b/oop_example.c
index fecac14..e9a4ffe 100644
--- a/oop_example.c
+++ b/oop_example.c
@@ -6,32 +6,34 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+const char *point_tname = "nerv.Point";
+
 typedef struct {
     double x, y;
     int arr[100];
 } Point;
 
 static int point_get_sinx (lua_State *L) {
-    Point *p = luaT_checkudata(L, 1, "nerv.point");
+    Point *p = luaT_checkudata(L, 1, point_tname);
     lua_pushnumber(L, sin(p->x));
     return 1;
 }
 
 static int point_set_x (lua_State *L) {
-    Point *p = luaT_checkudata(L, 1, "nerv.point");
+    Point *p = luaT_checkudata(L, 1, point_tname);
     p->x = luaL_checknumber(L, 2);
     return 0;
 }
 
 
 static int point_get_y(lua_State *L) {
-    Point *p = luaT_checkudata(L, 1, "nerv.point");
+    Point *p = luaT_checkudata(L, 1, point_tname);
     lua_pushnumber(L, sin(p->x));
     return 1;
 }
 
 static int point_newindex(lua_State *L) {
-    Point *p = luaT_checkudata(L, 1, "nerv.point");
+    Point *p = luaT_checkudata(L, 1, point_tname);
     if (lua_isnumber(L, 2))
     {
         int d = luaL_checkinteger(L, 2);
@@ -49,7 +51,7 @@ static int point_newindex(lua_State *L) {
 }
 
 static int point_index(lua_State *L) {
-    Point *p = luaT_checkudata(L, 1, "nerv.point");
+    Point *p = luaT_checkudata(L, 1, point_tname);
     if (lua_isnumber(L, 2))
     {
         int d = luaL_checkinteger(L, 2);
@@ -69,7 +71,7 @@ int point_new(lua_State *L) {
     Point *self = (Point *)malloc(sizeof(Point));
     self->x = 0;
     self->y = 0;
-    luaT_pushudata(L, self, "nerv.point");
+    luaT_pushudata(L, self, point_tname);
     return 1;
 }
 
@@ -83,7 +85,7 @@ static const luaL_Reg point[] = {
 };
 
 void nerv_point_init(lua_State *L) {
-    luaT_newmetatable(L, "nerv.point", NULL, point_new, NULL, NULL);
+    luaT_newmetatable(L, "nerv.Point", NULL, point_new, NULL, NULL);
     luaL_register(L, NULL, point);
     lua_pop(L, 1);
 }
-- 
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