From ad19e537066742e1a5f9bbb8c3549a47480a33c1 Mon Sep 17 00:00:00 2001
From: Samu Laaksonen <laaksonen.sj@gmail.com>
Date: Mon, 10 Dec 2012 23:47:03 +0200
Subject: Box2d integration

Very crude and buggy
Needs to be much better
---
 src/common.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 src/common.h

(limited to 'src/common.h')

diff --git a/src/common.h b/src/common.h
new file mode 100644
index 0000000..42f55f7
--- /dev/null
+++ b/src/common.h
@@ -0,0 +1,17 @@
+#ifndef COMMON_H
+#define COMMON_H
+
+// Box2D works best for objects of size 0.1m ... 10m
+// So we have a miniature world this time, makes easier to make things happen when
+// used forces are not too big, and nothing too surprising should not happen either...
+// 16px = 0.1m
+// this makes our main character as 32px * 64px ( 20cm wide and 40cm tall )
+#define _PMF (0.1f / 16.0f)
+
+#define P2M(x) ((x) * (_PMF))
+#define M2P(x) ((x) / (_PMF))
+
+#define FPS 60
+#define FRAME_INTERVAL (1000 / FPS)
+
+#endif
-- 
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