From 58488f8eabcc61089e0ae4297f38f10cc28d78c7 Mon Sep 17 00:00:00 2001
From: Matthew Kosarek <mattkae@protonmail.com>
Date: Sat, 27 Mar 2021 11:49:56 -0400
Subject: Working reusable simulation loop

---
 frontend/shared_cpp/MainLoop.h | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 frontend/shared_cpp/MainLoop.h

(limited to 'frontend/shared_cpp/MainLoop.h')

diff --git a/frontend/shared_cpp/MainLoop.h b/frontend/shared_cpp/MainLoop.h
new file mode 100644
index 0000000..7300f6b
--- /dev/null
+++ b/frontend/shared_cpp/MainLoop.h
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <emscripten.h>
+#include <emscripten/html5.h>
+#include <GLES2/gl2.h>
+#include <EGL/egl.h>
+
+EM_BOOL loop(double time, void* loop);
+
+struct MainLoop {
+    bool isRunning = false;
+	double lastTime = 0, elapsedTime = 0;
+	int numFrames = 0;
+	EM_BOOL (*updateFunc)(float dtSeconds, void *userData);
+
+    void run(EM_BOOL (*cb)(float dtSeconds, void *userData)) {
+		isRunning = true;
+		lastTime = 0;
+		elapsedTime = 0;
+		numFrames = 0;
+		updateFunc = cb;
+
+		emscripten_request_animation_frame_loop(loop, this);
+	}
+
+    void stop() {
+        isRunning = false;
+    }
+};
\ No newline at end of file
-- 
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