Added raylib+rmlui template

src/Application.cpp

@@ -0,0 +1,51 @@
+#include "Application.h"
+#include "backend/RaylibInput.h"
+
+#include <raylib.h>
+#include <RmlUi/Core.h>
+#include <RmlUi/Debugger.h>
+
+bool Application::Init(int width, int height, const char* title, const char* documentPath) {
+    InitWindow(width, height, title);
+    SetTargetFPS(60);
+
+    Rml::SetSystemInterface(&system_interface);
+    Rml::SetRenderInterface(&render_interface);
+    Rml::Initialise();
+
+    context = Rml::CreateContext("main", Rml::Vector2i(width, height));
+    Rml::Debugger::Initialise(context);
+
+    // TODO: load a real font 
+
+    if (Rml::ElementDocument* document = context->LoadDocument(documentPath)) {
+        document->Show();
+    } else {
+        TraceLog(LOG_WARNING, "Failed to load %s", documentPath);
+    }
+
+    return true;
+}
+
+void Application::Frame() {
+    if (WindowShouldClose()) {
+        running = false;
+        return;
+    }
+
+    ForwardInputToRml(context);
+    context->Update();
+
+    BeginDrawing();
+    ClearBackground(DARKGRAY);
+
+    // --- game world rendering goes here, before the UI ---
+
+    context->Render();
+    EndDrawing();
+}
+
+void Application::Shutdown() {
+    Rml::Shutdown();
+    CloseWindow();
+}