[entity] Starting work on entity system.

1 files changed, 55 insertions, 0 deletions

diff --git a/yage/entity/engine.cpp b/yage/entity/engine.cpp
new file mode 100644
index 00000000..cf6f73b7
--- /dev/null
+++ b/yage/entity/engine.cpp
@@ -0,0 +1,55 @@
+/** ---------------------------------------------------------------------------
+ * @file: engine.cpp
+ *
+ * Copyright (c) 2017 Yann Herklotz Grave <ymherklotz@gmail.com>
+ * MIT License, see LICENSE file for more details.
+ * ----------------------------------------------------------------------------
+ */
+
+#include "engine.h"
+
+namespace yage
+{
+
+void Engine::init()
+{
+    window_.create("Game Engine", 800, 640);
+
+    for (auto &system : systems_) {
+        system->init();
+    }
+}
+
+void Engine::mainLoop()
+{
+    while (!window_.shouldClose()) {
+        window_.clearBuffer();
+
+        update();
+
+        window_.swapBuffer();
+    }
+}
+
+void Engine::update()
+{
+    const double dt = 1.0 / 60.0;
+
+    for (auto &system : systems_) {
+        system->update(dt);
+    }
+}
+
+void Engine::addSystem(System *system)
+{
+    systems_.push_back(system);
+}
+
+Engine &Engine::instance()
+{
+    static Engine engine_instance;
+
+    return engine_instance;
+}
+
+} // namespace yage