feat: world script reloading

src/logic/scripting/lua/libs/libworld.cpp

@@ -6,6 +6,7 @@
 #include "assets/AssetsLoader.hpp"
 #include "coders/json.hpp"
 #include "content/Content.hpp"
+#include "content/ContentLoader.hpp"
 #include "engine/Engine.hpp"
 #include "world/files/WorldFiles.hpp"
 #include "io/engine_paths.hpp"
@@ -213,6 +214,17 @@ static int l_count_chunks(lua::State* L) {
     return lua::pushinteger(L, level->chunks->size());
 }
 
+static int l_reload_script(lua::State* L) {
+    auto packid = lua::require_string(L, 1);
+    if (content == nullptr) {
+        throw std::runtime_error("content is not initialized");
+    }
+    auto& writeableContent = *engine->getWriteableContent();
+    auto pack = writeableContent.getPackRuntime(packid);
+    ContentLoader::loadWorldScript(*pack);
+    return 0;
+}
+
 const luaL_Reg worldlib[] = {
     {"is_open", lua::wrap<l_is_open>},
     {"get_list", lua::wrap<l_get_list>},
@@ -230,5 +242,6 @@ const luaL_Reg worldlib[] = {
     {"set_chunk_data", lua::wrap<l_set_chunk_data>},
     {"save_chunk_data", lua::wrap<l_save_chunk_data>},
     {"count_chunks", lua::wrap<l_count_chunks>},
+    {"reload_script", lua::wrap<l_reload_script>},
     {NULL, NULL}
 };

src/logic/scripting/scripting.cpp

@@ -836,6 +836,8 @@ void scripting::load_content_script(
 ) {
     int env = *senv;
     lua::pop(lua::get_main_state(), load_script(env, "block", file, fileName));
+
+    funcsset = {};
     funcsset.init = register_event(env, "init", prefix + ".init");
     funcsset.update = register_event(env, "on_update", prefix + ".update");
     funcsset.randupdate =
@@ -861,6 +863,8 @@ void scripting::load_content_script(
 ) {
     int env = *senv;
     lua::pop(lua::get_main_state(), load_script(env, "item", file, fileName));
+
+    funcsset = {};
     funcsset.init = register_event(env, "init", prefix + ".init");
     funcsset.on_use = register_event(env, "on_use", prefix + ".use");
     funcsset.on_use_on_block =
@@ -888,6 +892,8 @@ void scripting::load_world_script(
 ) {
     int env = *senv;
     lua::pop(lua::get_main_state(), load_script(env, "world", file, fileName));
+
+    funcsset = {};
     register_event(env, "init", prefix + ".init");
     register_event(env, "on_world_open", prefix + ":.worldopen");
     register_event(env, "on_world_tick", prefix + ":.worldtick");