correct the oop_example

2 files changed, 8 insertions, 33 deletions

diff --git a/examples/oop_example.c b/examples/oop_example.c
index 859bd03..59dfc5a 100644
--- a/examples/oop_example.c
+++ b/examples/oop_example.c
@@ -46,22 +46,9 @@ int point_new(lua_State *L) {
     return 1;
 }
 
-int point___init(lua_State *L) {
-    /* The difference between this function and `_new` function is that this
-     * one is called by subclass of Point implemented in Lua, although it
-     * basically does the same thing as `_new`. Also, it can read the empty
-     * object (table) from the stack. (In this example, the table is ignored.) */
-    Point *self = (Point *)malloc(sizeof(Point));
-    point_new_(self, luaL_checknumber(L, 2), luaL_checknumber(L, 3));
-    luaT_pushudata(L, self, point_tname);
-    fprintf(stderr, "[example] A subclass has invoked `__init`\n");
-    return 1;
-}
-
 static const luaL_Reg point_methods[] = {
     {"set_x", point_set_x},
     {"set_y", point_set_y},
-    {"__init", point___init},
     {"norm", point_norm},
     {NULL, NULL}
 };
@@ -84,21 +71,8 @@ int better_point_new(lua_State *L) {
     return 1;
 }
 
-int better_point___init(lua_State *L) {
-    /* The difference between this function and `_new` function is that this
-     * one is called by subclass of Point implemented in Lua, although it
-     * basically does the same thing as `_new`. Also, it can read the empty
-     * object (table) from the stack. (In this example, the table is ignored.) */
-    Point *self = (Point *)malloc(sizeof(Point));
-    point_new_(self, luaL_checknumber(L, 2), luaL_checknumber(L, 3));
-    luaT_pushudata(L, self, better_point_tname);
-    fprintf(stderr, "[example] A subclass has invoked `__init`\n");
-    return 1;
-}
-
 static const luaL_Reg better_point_methods[] = {
     {"norm", better_point_norm},
-    {"__init", better_point___init},
     {NULL, NULL}
 };
 
diff --git a/examples/oop_example.lua b/examples/oop_example.lua
index 712387b..b753288 100644
--- a/examples/oop_example.lua
+++ b/examples/oop_example.lua
@@ -5,11 +5,12 @@ p:set_x(1.0)
 p:set_y(2.0)
 print(p:norm()) -- get 2-norm of the Point
 
-p = nerv.BetterPoint(1, 2)
-print(p)
-print(p:norm()) --get 1-norm of the Point
+bp = nerv.BetterPoint(1, 2)
+-- use methods from base class
+bp:set_x(1.0)
+bp:set_y(2.0)
+print(bp)
+print(bp:norm()) --get 1-norm of the Point
 
--- create a subclass using lua
-local EvenBetterPoint = nerv.class('nerv.EvenBetterPoint', 'nerv.BetterPoint')
-bp = nerv.EvenBetterPoint(1, 2)
-print(p:norm())
+print(p.__typename)
+print(bp.__typename)