Simplified example

src/app.cpp

@@ -0,0 +1,35 @@
+#include "app.hpp"
+#include "../libs/raylib/src/raylib.h"
+#include "helper.hpp"
+
+Texture2D texture;
+
+void init_app()
+{
+    texture = LoadTexture("assets/test.png");
+}
+
+bool app_loop()
+{
+
+    BeginDrawing();
+
+    ClearBackground(RAYWHITE);
+
+    const int texture_x = getWindowWidth() / 2 - texture.width / 2;
+    const int texture_y = getWindowHeight() / 2 - texture.height / 2;
+    DrawTexture(texture, texture_x, texture_y, WHITE);
+
+    const char *text = "OMG! IT WORKS!";
+    const Vector2 text_size = MeasureTextEx(GetFontDefault(), text, 20, 1);
+    DrawText(text, getWindowWidth() / 2.0 - text_size.x / 2, texture_y + texture.height + text_size.y + 10, 20, BLACK);
+
+    EndDrawing();
+
+    return true;
+}
+
+void deinit_app()
+{
+    UnloadTexture(texture);
+}

src/app.hpp

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+#ifndef APP_HPP
+#define APP_HPP
+
+// Load asset and initialized stuffs here
+void init_app();
+
+// The main loop (return false to end loop)
+bool app_loop();
+
+// Free up allocated memory
+void deinit_app();
+
+#endif

src/wrapper.cpp

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+#include "../libs/raylib/src/raylib.h"
+#include "helper.hpp"
+#include "app.hpp"
+
+void web_loop()
+{
+    static int old_w = 0, old_h = 0;
+
+    int w = getWindowWidth();
+    int h = getWindowHeight();
+    if (w != old_w || h != old_h)
+    {
+        SetWindowSize(w, h);
+    }
+    app_loop();
+}
+
+int main(void)
+{
+    // Setup window
+#if defined(PLATFORM_WEB)
+    InitWindow(getBrowserWindowWidth(), getBrowserWindowHeight(), PROJECT_NAME);
+#else
+    InitWindow(800, 500, PROJECT_NAME);
+#endif
+    SetWindowState(FLAG_WINDOW_RESIZABLE | FLAG_WINDOW_MAXIMIZED);
+    init_app();
+
+#if defined(PLATFORM_WEB)
+    emscripten_set_main_loop(web_loop, 0, 1);
+#else
+    while (app_loop() && !WindowShouldClose())
+    {
+    }
+#endif
+    deinit_app();
+
+    // Cleanup
+    CloseWindow();
+    return 0;
+}