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stoneharry
Apr 3rd, 2013
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  1. Index: src/scripts/src/LuaEngine/LUAEngine.cpp
  2. ===================================================================
  3. --- src/scripts/src/LuaEngine/LUAEngine.cpp (revision 4445)
  4. +++ src/scripts/src/LuaEngine/LUAEngine.cpp (working copy)
  5. @@ -280,9 +280,9 @@
  6. if(unit != NULL && unit->IsUnit())
  7. pUnit = TO_UNIT(unit);
  8. if(L == NULL)
  9. - ArcLuna<Unit>::push(lu, pUnit);
  10. + ArcSole<Unit>::push(lu, pUnit);
  11. else
  12. - ArcLuna<Unit>::push(L, pUnit);
  13. + ArcSole<Unit>::push(L, pUnit);
  14. }
  15. void LuaEngine::PushGo(Object* go, lua_State* L)
  16. {
  17. @@ -290,9 +290,9 @@
  18. if(go != NULL && go->IsGameObject())
  19. pGo = TO< GameObject* >(go);
  20. if(L == NULL)
  21. - ArcLuna<GameObject>::push(lu, pGo);
  22. + ArcSole<GameObject>::push(lu, pGo);
  23. else
  24. - ArcLuna<GameObject>::push(L, pGo);
  25. + ArcSole<GameObject>::push(L, pGo);
  26. }
  27. void LuaEngine::PushItem(Object* item, lua_State* L)
  28. {
  29. @@ -586,9 +586,9 @@
  30.  
  31. RegisterGlobalFunctions(lu);
  32.  
  33. - ArcLuna<Unit>::Register(lu);
  34. + ArcSole<Unit>::Register(lu);
  35. ArcLuna<Item>::Register(lu);
  36. - ArcLuna<GameObject>::Register(lu);
  37. + ArcSole<GameObject>::Register(lu);
  38. ArcLuna<WorldPacket>::Register(lu);
  39. ArcLuna<TaxiPath>::Register(lu);
  40. ArcLuna<Spell>::Register(lu);
  41. Index: src/scripts/src/LuaEngine/LUAEngine.h
  42. ===================================================================
  43. --- src/scripts/src/LuaEngine/LUAEngine.h (revision 4445)
  44. +++ src/scripts/src/LuaEngine/LUAEngine.h (working copy)
  45. @@ -301,13 +301,13 @@
  46. //Wrappers
  47. ARCEMU_INLINE Unit* CheckUnit(lua_State* L, int narg)
  48. {
  49. - if(L == NULL) return ArcLuna<Unit>::check(lu, narg);
  50. - else return ArcLuna<Unit>::check(L, narg);
  51. + if(L == NULL) return ArcSole<Unit>::check(lu, narg);
  52. + else return ArcSole<Unit>::check(L, narg);
  53. }
  54. ARCEMU_INLINE GameObject* CheckGo(lua_State* L, int narg)
  55. {
  56. - if(L == NULL) return ArcLuna<GameObject>::check(lu, narg);
  57. - else return ArcLuna<GameObject>::check(L, narg);
  58. + if(L == NULL) return ArcSole<GameObject>::check(lu, narg);
  59. + else return ArcSole<GameObject>::check(L, narg);
  60. }
  61. ARCEMU_INLINE Item* CheckItem(lua_State* L, int narg)
  62. {
  63. @@ -326,8 +326,8 @@
  64. }
  65. ARCEMU_INLINE Object* CheckObject(lua_State* L, int narg)
  66. {
  67. - if(L == NULL) return ArcLuna<Object>::check(lu, narg);
  68. - else return ArcLuna<Object>::check(L, narg);
  69. + if(L == NULL) return ArcSole<Object>::check(lu, narg);
  70. + else return ArcSole<Object>::check(L, narg);
  71. }
  72. ARCEMU_INLINE TaxiPath* CheckTaxiPath(lua_State* L, int narg)
  73. {
  74. @@ -775,6 +775,205 @@
  75. return 1;
  76. }
  77. };
  78. +
  79. + //As opposed to ArcLuna, this is meant to bring some light to this Lua Engine plagued by crashes since r1, caused by pushing on the stack Object*
  80. + //references that could point to free'd memory. It will push object* (and derived types) as guid + mapid + instanceid.
  81. + template <typename T>
  82. + class ArcSole
  83. + {
  84. + private:
  85. + uint64 guid;
  86. + uint32 mapId;
  87. + int32 instanceId;
  88. +
  89. + T* Get()
  90. + {
  91. + Object* object = NULL;
  92. + MapMgr* mapMgr = sInstanceMgr.GetMapMgr(mapId);
  93. + if(mapMgr == NULL)
  94. + {
  95. + //if mapMgr is NULL then it's probably an instance
  96. + Instance * instance = sInstanceMgr.GetInstanceByIds(mapId, instanceId);
  97. + if(instance != NULL)
  98. + object = instance->m_mapMgr->_GetObject(guid);
  99. + }
  100. + else
  101. + object = mapMgr->_GetObject(guid);
  102. + return TO<T*>(object);
  103. + }
  104. + public:
  105. + typedef int (*mfp)(lua_State *L, T* ptr);
  106. + typedef struct { const char *name; mfp mfunc; } RegType;
  107. +
  108. + static void Register(lua_State *L)
  109. + {
  110. + lua_newtable(L);
  111. + int methods = lua_gettop(L);
  112. +
  113. + luaL_newmetatable(L, GetTClassName<T>());
  114. + int metatable = lua_gettop(L);
  115. +
  116. + luaL_newmetatable(L,"DO NOT TRASH");
  117. + lua_pop(L,1);
  118. +
  119. + // store method table in globals so that
  120. + // scripts can add functions written in Lua.
  121. + lua_pushvalue(L, methods);
  122. + lua_setglobal(L,GetTClassName<T>());
  123. +
  124. + // hide metatable from Lua getmetatable()
  125. + lua_pushvalue(L, methods);
  126. + lua_setfield(L, metatable, "__metatable");
  127. +
  128. + lua_pushcfunction(L,index);
  129. + lua_setfield(L, metatable, "__index");
  130. +
  131. + lua_pushcfunction(L, tostring_T);
  132. + lua_setfield(L, metatable, "__tostring");
  133. +
  134. + //nil gc method because world will take care of created Objects
  135. + lua_pushnil(L);
  136. + lua_setfield(L, metatable, "__gc");
  137. +
  138. + lua_newtable(L); // mt for method table
  139. + lua_setmetatable(L, methods);
  140. +
  141. + // fill method table with methods from class T
  142. + for (RegType *l = ((RegType*)GetMethodTable<T>()); l->name; l++)
  143. + {
  144. + lua_pushstring(L, l->name);
  145. + lua_pushlightuserdata(L, (void*)l);
  146. + lua_pushcclosure(L, thunk, 1);
  147. + lua_settable(L, methods);
  148. + }
  149. + lua_pop(L, 2); // drop metatable and method table
  150. + }
  151. +
  152. + // push onto the Lua stack a userdata containing a pointer to T object
  153. + static int push(lua_State *L, T *obj, bool gc=false)
  154. + {
  155. + if(obj == NULL)
  156. + {
  157. + lua_pushnil(L);
  158. + return lua_gettop(L);
  159. + }
  160. +
  161. + luaL_getmetatable(L, GetTClassName<T>()); // lookup metatable in Lua registry
  162. + if (lua_isnil(L, -1)) luaL_error(L, "%s missing metatable", GetTClassName<T>());
  163. + int mt = lua_gettop(L);
  164. + ArcSole* holder = TO<ArcSole*>(lua_newuserdata(L,sizeof(ArcSole)));
  165. + int ud = lua_gettop(L);
  166. + if(holder != NULL)
  167. + {
  168. + holder->guid = obj->GetGUID();
  169. + holder->mapId = obj->GetMapId();
  170. + holder->instanceId = obj->GetInstanceID();
  171. +
  172. + lua_pushvalue(L, mt);
  173. + lua_setmetatable(L, -2);
  174. + char name[32];
  175. + tostring(name,obj);
  176. + lua_getfield(L,LUA_REGISTRYINDEX,"DO NOT TRASH");
  177. + if(lua_isnil(L,-1) )
  178. + {
  179. + luaL_newmetatable(L,"DO NOT TRASH");
  180. + lua_pop(L,1);
  181. + }
  182. + lua_getfield(L,LUA_REGISTRYINDEX,"DO NOT TRASH");
  183. + if(gc == false)
  184. + {
  185. + lua_pushboolean(L,1);
  186. + lua_setfield(L,-2,name);
  187. + }
  188. + lua_pop(L,1);
  189. + }
  190. + lua_settop(L,ud);
  191. + lua_replace(L, mt);
  192. + lua_settop(L, mt);
  193. + return mt; // index of userdata containing pointer to T object
  194. + }
  195. +
  196. + // get userdata from Lua stack and return pointer to T object
  197. + static T *check(lua_State *L, int narg)
  198. + {
  199. + ArcSole* holder = TO<ArcSole*>(lua_touserdata(L,narg));
  200. + if(holder == NULL)
  201. + return NULL;
  202. + return holder->Get();
  203. + }
  204. +
  205. + private:
  206. + // member function dispatcher
  207. + static int thunk(lua_State *L)
  208. + {
  209. + // stack has userdata, followed by method args
  210. + T *obj = check(L, 1); // get 'self', or if you prefer, 'this'
  211. + lua_remove(L, 1); // remove self so member function args start at index 1
  212. + // get member function from upvalue
  213. + RegType *l = static_cast<RegType*>(lua_touserdata(L, lua_upvalueindex(1)));
  214. + //return (obj->*(l->mfunc))(L); // call member function
  215. + return l->mfunc(L,obj);
  216. + }
  217. +
  218. + static int tostring_T (lua_State *L)
  219. + {
  220. + char buff[32];
  221. + T ** ptrHold = (T**)lua_touserdata(L,1);
  222. + T *obj = *ptrHold;
  223. + sprintf(buff, "%p", obj);
  224. + lua_pushfstring(L, "%s (%s)", GetTClassName<T>(), buff);
  225. + return 1;
  226. + }
  227. + ARCEMU_INLINE static void tostring(char * buff,void * obj)
  228. + {
  229. + sprintf(buff,"%p",obj);
  230. + }
  231. + static int index(lua_State * L)
  232. + {
  233. + /*Paroxysm : the table obj and the missing key are currently on the stack(index 1 & 2) */
  234. + lua_getglobal(L,GetTClassName<T>());
  235. + // string form of the key.
  236. + const char * key = lua_tostring(L,2);
  237. + if(lua_istable(L,-1) )
  238. + {
  239. + lua_pushvalue(L,2);
  240. + lua_rawget(L,-2);
  241. + //If the key were looking for is not in the table, retrieve its' metatables' index value.
  242. + if(lua_isnil(L,-1))
  243. + {
  244. + lua_getmetatable(L,-2);
  245. + if(lua_istable(L,-1) )
  246. + {
  247. + lua_getfield(L,-1,"__index");
  248. + if(lua_isfunction(L,-1) )
  249. + {
  250. + lua_pushvalue(L,1);
  251. + lua_pushvalue(L,2);
  252. + lua_pcall(L,2,1,0);
  253. + }
  254. + else if(lua_istable(L,-1) )
  255. + lua_getfield(L,-1,key);
  256. + else
  257. + lua_pushnil(L);
  258. + }
  259. + else
  260. + lua_pushnil(L);
  261. + }
  262. + else if(lua_istable(L,-1) )
  263. + {
  264. + lua_pushvalue(L,2);
  265. + lua_rawget(L,-2);
  266. + }
  267. + }
  268. + else
  269. + lua_pushnil(L);
  270. +
  271. + lua_insert(L,1);
  272. + lua_settop(L,1);
  273. + return 1;
  274. + }
  275. + };
  276. +
  277. class GUID_MGR
  278. {
  279. static const char* GetName() { return "WoWGUID"; }
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