From 231182e7c2b1911d7cab32c8c6bbe94047acd024 Mon Sep 17 00:00:00 2001
From: bakpakin <calsrose@gmail.com>
Date: Sun, 29 Mar 2015 07:02:14 +0800
Subject: [PATCH] Add method for activating and deactivating Systems in Worlds.

---
 jojo.lua | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/jojo.lua b/jojo.lua
index 23eebff..9d54e97 100644
--- a/jojo.lua
+++ b/jojo.lua
@@ -442,4 +442,13 @@ function World:clearSystems()
     self.systemsToRemove = newSystemsToRemove
 end
 
+-- World:setSystemActive(system, active)
+
+-- Sets if a System is active in a world. If the system is active, it will
+-- update automatically when World:update(dt) is called. Otherwise, the user
+-- must call World:updateSystem(system, dt) to update the unactivated system.
+function World:setSystemActive(system, active)
+    self.activeSystem[system] = active and true or nil
+end
+
 return jojo