ui: more xml support + hud.close function

src/logic/scripting/lua/libhud.cpp

@@ -15,6 +15,7 @@
 #include "../../../logic/BlocksController.h"
 #include "../../../items/Inventories.h"
 #include "../../../engine.h"
+#include "../../../frontend/UiDocument.h"
 
 namespace scripting {
     extern Hud* hud;
@@ -64,13 +65,23 @@ int l_hud_open_block(lua_State* L) {
     return 2;
 }
 
-int l_hud_open_permanent(lua_State* L) {
+UiDocument* require_layout(lua_State* L, const char* name) {
     auto assets = scripting::engine->getAssets();
-    auto name = lua_tostring(L, 1);
     auto layout = assets->getLayout(name);
     if (layout == nullptr) {
         luaL_error(L, "layout '%s' is not found", name);
     }
+    return layout;
+}
+
+int l_hud_open_permanent(lua_State* L) {
+    auto layout = require_layout(L, lua_tostring(L, 1));
     scripting::hud->openPermanent(layout);
     return 0;
 }
+
+int l_hud_close(lua_State* L) {
+    auto layout = require_layout(L, lua_tostring(L, 1));
+    scripting::hud->remove(layout->getRoot());
+    return 0;
+}

src/logic/scripting/lua/libhud.h

@@ -7,12 +7,14 @@ extern int l_hud_open_inventory(lua_State* L);
 extern int l_hud_close_inventory(lua_State* L);
 extern int l_hud_open_block(lua_State* L);
 extern int l_hud_open_permanent(lua_State* L);
+extern int l_hud_close(lua_State* L);
 
 static const luaL_Reg hudlib [] = {
     {"open_inventory", l_hud_open_inventory},
     {"close_inventory", l_hud_close_inventory},
     {"open_block", l_hud_open_block},
     {"open_permanent", l_hud_open_permanent},
+    {"close", l_hud_close},
     {NULL, NULL}
 };
 

src/logic/scripting/scripting_functional.cpp

@@ -60,6 +60,21 @@ doubleconsumer scripting::create_number_consumer(
     };
 }
 
+doublesupplier scripting::create_number_supplier(
+    int env,
+    const std::string& src,
+    const std::string& file
+) {
+    return [=](){
+        if (processCallback(env, src, file)) {
+            state->callNoThrow(0);
+            lua::luanumber x = state->tonumber(-1); state->pop();
+            return x;
+        }
+        return 0.0;
+    };
+}
+
 int_array_consumer scripting::create_int_array_consumer(
     int env,
     const std::string& src, 

src/logic/scripting/scripting_functional.h

@@ -24,6 +24,12 @@ namespace scripting {
         const std::string& file="<string>"
     );
 
+    doublesupplier create_number_supplier(
+        int env,
+        const std::string& src,
+        const std::string& file="<string>"
+    );
+
     int_array_consumer create_int_array_consumer(
         int env,
         const std::string& src,