[entity] Starting work on entity system.

1 files changed, 51 insertions, 0 deletions

diff --git a/yage/entity/engine.h b/yage/entity/engine.h
new file mode 100644
index 00000000..147769e5
--- /dev/null
+++ b/yage/entity/engine.h
@@ -0,0 +1,51 @@
+/** ---------------------------------------------------------------------------
+ * @file: engine.h
+ *
+ * Copyright (c) 2017 Yann Herklotz Grave <ymherklotz@gmail.com>
+ * MIT License, see LICENSE file for more details.
+ * ----------------------------------------------------------------------------
+ */
+
+#ifndef YAGE_CORE_ENGINE_H
+#define YAGE_CORE_ENGINE_H
+
+#include "../core/window.h"
+#include "system.h"
+
+#include <vector>
+
+namespace yage
+{
+
+/// Main engine class that contains a systems, the main loop and the update
+/// function that updates all the systems.
+class Engine
+{
+public:
+    /// Initialize window and other aspects of the engine.
+    void init();
+
+    /// Main game loop of the engine.
+    void mainLoop();
+
+    /// Updates the systems.
+    void update();
+
+    /// Adds a system to the engine.
+    void addSystem(System *system);
+
+    /// Returns the instance of the engine, as there is only one instance of the
+    /// engine.
+    static Engine &instance();
+
+private:
+    /// Vector of all the systems in the engine.
+    std::vector<System *> systems_;
+
+    /// Window
+    Window window_;
+};
+
+} // namespace yage
+
+#endif