Expanded creature & barrier API

server/lua_utilities.cpp

@@ -0,0 +1,47 @@
+/* Copyright: (c) Kayne Ruse 2013-2016
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#include "lua_utilities.hpp"
+
+#include <stdexcept>
+#include <string>
+
+//this is for functions passed to SetOnCreate & SetOnUnload
+int runHook(lua_State* L, int scriptRef, void* userdata, int index) {
+	//get the hook
+	lua_rawgeti(L, LUA_REGISTRYINDEX, scriptRef);
+
+	if (lua_isnil(L, -1)) {
+		lua_pop(L, 1);
+		return -1;
+	}
+
+	//push args
+	lua_pushlightuserdata(L, userdata);
+	lua_pushinteger(L, index);
+
+	//call the function, 2 arg, 0 return
+	if (lua_pcall(L, 2, 0, 0) != LUA_OK) {
+		throw(std::runtime_error(std::string() + "Lua error: " + lua_tostring(L, -1) ));
+	}
+
+	return 0;
+}