add component ARGS variable

src/logic/scripting/lua/libentity.cpp

@@ -31,7 +31,11 @@ static int l_spawn(lua::State* L) {
     auto defname = lua::tostring(L, 1);
     auto& def = content->entities.require(defname);
     auto pos = lua::tovec3(L, 2);
-    level->entities->spawn(def, pos);
+    dynamic::Value args = dynamic::NONE;
+    if (lua::gettop(L) > 2) {
+        args = lua::tovalue(L, 3);
+    }
+    level->entities->spawn(def, pos, args);
     return 1;
 }
 

src/logic/scripting/scripting.cpp

@@ -256,7 +256,12 @@ bool scripting::on_item_break_block(Player* player, const ItemDef* item, int x,
     });
 }
 
-scriptenv scripting::on_entity_spawn(const EntityDef& def, entityid_t eid, entity_funcs_set& funcsset) {
+scriptenv scripting::on_entity_spawn(
+    const EntityDef& def, 
+    entityid_t eid, 
+    entity_funcs_set& funcsset,
+    dynamic::Value args
+) {
     auto L = lua::get_main_thread();
     lua::requireglobal(L, STDCOMP);
     if (lua::getfield(L, "new_Entity")) {
@@ -266,6 +271,8 @@ scriptenv scripting::on_entity_spawn(const EntityDef& def, entityid_t eid, entit
     auto entityenv = create_entity_environment(get_root_environment(), -1);
     lua::get_from(L, lua::CHUNKS_TABLE, def.scriptName, true);
     lua::pushenv(L, *entityenv);
+    lua::pushvalue(L, args);
+    lua::setfield(L, "ARGS");
     lua::setfenv(L);
     lua::call_nothrow(L, 0, 0);
 

src/logic/scripting/scripting.hpp

@@ -76,7 +76,12 @@ namespace scripting {
     /// @return true if prevents default action
     bool on_item_break_block(Player* player, const ItemDef* item, int x, int y, int z);
 
-    scriptenv on_entity_spawn(const EntityDef& def, entityid_t eid, entity_funcs_set&);
+    scriptenv on_entity_spawn(
+        const EntityDef& def, 
+        entityid_t eid, 
+        entity_funcs_set&,
+        dynamic::Value args
+    );
     bool on_entity_despawn(const EntityDef& def, const Entity& entity);
     bool on_entity_grounded(const Entity& entity, float force);
     bool on_entity_fall(const Entity& entity);