Rewrite planemap and idalloc in pure C++

luprex/syscpp/world.cpp

@@ -0,0 +1,45 @@
+
+#include "world.hpp"
+#include "idalloc.hpp"
+
+LuaDefineType(World);
+
+World::~World() {
+}
+
+void World::init(lua_State *L) {
+    LuaVar world;
+    LuaStack LS(L, world);
+    LS.newpointer(world, new World, false);
+    LS.setfield(LuaRegistry, "world", world);
+}
+
+World *World::fetch(lua_State *L) {
+    LuaVar world;
+    LuaStack LS(L, world);
+    LS.getfield(world, LuaRegistry, "world");
+    World *w = LS.ckuserdata<World>(world);
+    LS.result();
+    return w;
+}
+
+LuaDefine(world_init, "c") {
+    World::init(L);
+    return 0;
+}
+
+LuaDefine(world_setid, "c") {
+    LuaArg id;
+    LuaStack LS(L, id);
+    World *w = World::fetch(L);
+    w->id_ = LS.ckinteger(id);
+    return LS.result();
+}
+
+LuaDefine(world_getid, "c") {
+    LuaRet id;
+    LuaStack LS(L, id);
+    World *w = World::fetch(L);
+    LS.set(id, w->id_);
+    return LS.result();
+};