gui: more xml and lua support

src/logic/scripting/api/api_lua.h

@@ -108,8 +108,14 @@ static int l_time_uptime(lua_State* L) {
     return 1;
 }
 
+static int l_time_delta(lua_State* L) {
+    lua_pushnumber(L, scripting::engine->getDelta());
+    return 1;
+}
+
 static const luaL_Reg timelib [] = {
     {"uptime", l_time_uptime},
+    {"delta", l_time_delta},
     {NULL, NULL}
 };
  

src/logic/scripting/scripting.cpp

@@ -70,21 +70,42 @@ runnable scripting::create_runnable(
     };
 }
 
+static bool processCallback(
+    int env,
+    const std::string& src,
+    const std::string& file
+) {
+    try {
+        return state->eval(env, src, file) != 0;
+    } catch (lua::luaerror err) {
+        std::cerr << err.what() << std::endl;
+        return false;
+    }
+}
+
 wstringconsumer scripting::create_wstring_consumer(
     int env,
     const std::string& src,
     const std::string& file
 ) {
     return [=](const std::wstring& x){
-        try {
-            if (state->eval(env, src, file) == 0)
-                return;
-        } catch (lua::luaerror err) {
-            std::cerr << err.what() << std::endl;
-            return;
+        if (processCallback(env, src, file)) {
+            state->pushstring(util::wstr2str_utf8(x));
+            state->callNoThrow(1);
+        }
+    };
+}
+
+doubleconsumer scripting::create_number_consumer(
+    int env,
+    const std::string& src,
+    const std::string& file
+) {
+    return [=](double x){
+        if (processCallback(env, src, file)) {
+            state->pushnumber(x);
+            state->callNoThrow(1);
         }
-        state->pushstring(util::wstr2str_utf8(x));
-        state->callNoThrow(1);
     };
 }
 
@@ -94,17 +115,12 @@ int_array_consumer scripting::create_int_array_consumer(
     const std::string& file
 ) {
     return [=](const int arr[], size_t len){
-        try {
-            if (state->eval(env, src, file) == 0)
-                return;
-        } catch (lua::luaerror err) {
-            std::cerr << err.what() << std::endl;
-            return;
+        if (processCallback(env, src, file)) {
+            for (uint i = 0; i < len; i++) {
+                state->pushinteger(arr[i]);
+            }
+            state->callNoThrow(len);
         }
-        for (uint i = 0; i < len; i++) {
-            state->pushinteger(arr[i]);
-        }
-        state->callNoThrow(len);
     };
 }
 

src/logic/scripting/scripting.h

@@ -55,6 +55,12 @@ namespace scripting {
         const std::string& file="<string>"
     );
 
+    doubleconsumer create_number_consumer(
+        int env,
+        const std::string& src,
+        const std::string& file="<string>"
+    );
+
     int_array_consumer create_int_array_consumer(
         int env,
         const std::string& src,