add EnvRef:get_node_or_nil()

diff --git a/src/scriptapi.cpp b/src/scriptapi.cpp
index 3fe69e709b361c911f9d618a4ebed3ec92925252..ab1b3d82495dcd527b33d5c3dc110961eb57e813 100644 (file)
--- a/src/scriptapi.cpp
+++ b/src/scriptapi.cpp
@@ -2308,6 +2308,29 @@ private:
                return 1;
        }
 
+       // EnvRef:get_node_or_nil(pos)
+       // pos = {x=num, y=num, z=num}
+       static int l_get_node_or_nil(lua_State *L)
+       {
+               //infostream<<"EnvRef::l_get_node()"<<std::endl;
+               EnvRef *o = checkobject(L, 1);
+               ServerEnvironment *env = o->m_env;
+               if(env == NULL) return 0;
+               // pos
+               v3s16 pos = readpos(L, 2);
+               // Do it
+               try{
+                       MapNode n = env->getMap().getNode(pos);
+                       // Return node
+                       pushnode(L, n, env->getGameDef()->ndef());
+                       return 1;
+               } catch(InvalidPositionException &e)
+               {
+                       lua_pushnil(L);
+                       return 1;
+               }
+       }
+
        // EnvRef:add_luaentity(pos, entityname)
        // pos = {x=num, y=num, z=num}
        static int l_add_luaentity(lua_State *L)
@@ -2476,6 +2499,7 @@ const luaL_reg EnvRef::methods[] = {
        method(EnvRef, add_node),
        method(EnvRef, remove_node),
        method(EnvRef, get_node),
+       method(EnvRef, get_node_or_nil),
        method(EnvRef, add_luaentity),
        method(EnvRef, add_item),
        method(EnvRef, add_rat),