Merge branch 'main' into volume-renderer

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

@@ -1,6 +1,7 @@
 #include "api_lua.hpp"
 
 #include "assets/Assets.hpp"
+#include "assets/AssetsLoader.hpp"
 #include "coders/png.hpp"
 #include "coders/vcm.hpp"
 #include "debug/Logger.hpp"
@@ -24,6 +25,14 @@ static void load_texture(
     }
 }
 
+static int l_request_texture(lua::State* L) {
+    std::string filename = lua::require_string(L, 1);
+    std::string alias = lua::require_string(L, 2);
+    auto& loader = engine->acquireBackgroundLoader();
+    loader.add(AssetType::TEXTURE, filename, alias);
+    return 0;
+}
+
 static int l_load_texture(lua::State* L) {
     if (lua::isstring(L, 3) && lua::require_lstring(L, 3) != "png") {
         throw std::runtime_error("unsupportd image format");
@@ -108,6 +117,7 @@ static int l_to_canvas(lua::State* L) {
 }
 
 const luaL_Reg assetslib[] = {
+    {"request_texture", lua::wrap<l_request_texture>},
     {"load_texture", lua::wrap<l_load_texture>},
     {"parse_model", lua::wrap<l_parse_model>},
     {"to_canvas", lua::wrap<l_to_canvas>},

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

@@ -397,6 +397,13 @@ static int p_get_src(UINode* node, lua::State* L) {
     return 0;
 }
 
+static int p_get_fallback(UINode* node, lua::State* L) {
+    if (auto image = dynamic_cast<Image*>(node)) {
+        return lua::pushstring(L, image->getFallback());
+    }
+    return 0;
+}
+
 static int p_get_region(UINode* node, lua::State* L) {
     if (auto image = dynamic_cast<Image*>(node)) {
         const auto& region = image->getRegion();
@@ -663,6 +670,7 @@ static int l_gui_getattr(lua::State* L) {
             {"syntax", p_get_syntax},
             {"markup", p_get_markup},
             {"src", p_get_src},
+            {"fallback", p_get_fallback},
             {"value", p_get_value},
             {"min", p_get_min},
             {"max", p_get_max},
@@ -790,6 +798,11 @@ static void p_set_src(UINode* node, lua::State* L, int idx) {
         modelviewer->setModel(lua::require_string(L, idx));
     }
 }
+static void p_set_fallback(UINode* node, lua::State* L, int idx) {
+    if (auto image = dynamic_cast<Image*>(node)) {
+        image->setFallback(lua::require_string(L, idx));
+    }
+}
 static void p_set_region(UINode* node, lua::State* L, int idx) {
     if (auto image = dynamic_cast<Image*>(node)) {
         auto vec = lua::tovec4(L, idx);
@@ -962,6 +975,7 @@ static int l_gui_setattr(lua::State* L) {
             {"syntax", p_set_syntax},
             {"markup", p_set_markup},
             {"src", p_set_src},
+            {"fallback", p_set_fallback},
             {"caret", p_set_caret},
             {"value", p_set_value},
             {"min", p_set_min},

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

@@ -87,10 +87,10 @@ static int l_pack_get_info(
     lua::setfield(L, "path");
 
     if (!engine->isHeadless()) {
-        auto assets = engine->getAssets();
+        auto& assetsLoader = engine->acquireBackgroundLoader();
         std::string icon = pack.id + ".icon";
         if (!AssetsLoader::loadExternalTexture(
-                assets, icon, {pack.folder / "icon.png"}
+                assetsLoader, icon, {pack.folder / "icon.png"}
             )) {
             icon = "gui/no_icon";
         }

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

@@ -56,10 +56,9 @@ static int l_get_list(lua::State* L) {
         lua::pushstring(L, name);
         lua::setfield(L, "name");
 
-        auto assets = engine->getAssets();
         std::string icon = "world#" + name + ".icon";
         if (!engine->isHeadless() && !AssetsLoader::loadExternalTexture(
-                assets,
+                engine->acquireBackgroundLoader(),
                 icon,
                 {worlds[i] / "icon.png",
                  worlds[i] / "preview.png"}