From 5aa6b335be1463ecc2f154cf6a830498833efb2c Mon Sep 17 00:00:00 2001
From: Matthias Richter <vrld@vrld.org>
Date: Fri, 12 Aug 2011 13:00:54 +0200
Subject: [PATCH] Add HC.clear()

---
 init.lua | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/init.lua b/init.lua
index e0259e0..191d7ff 100644
--- a/init.lua
+++ b/init.lua
@@ -53,6 +53,14 @@ function init(cell_size, callback_collide, callback_stop)
 	is_initialized = true
 end
 
+function clear()
+	hash = Spatialhash(hash.cell_size)
+	active_shapes, passive_shapes, ghosts = {}, {}, {}
+	current_shape_id = 0
+	shape_ids = setmetatable({}, {__mode = "k"})
+	groups = {}
+end
+
 function setCallbacks(collide, stop)
 	if type(collide) == "table" and not (getmetatable(collide) or {}).__call then
 		stop = collide.stop