bullet-fast-cache.patch

diff --git a/src/libs/bulletclass.lua b/src/libs/bulletclass.lua
index 967d69d..0ca8758 100644
--- a/src/libs/bulletclass.lua
+++ b/src/libs/bulletclass.lua
@@ -1,40 +1,73 @@
 local bullet = {}

+bullet.__dead_pool = {}
+bullet.__dead_pool_max = 100
+bullet.__live_pool = {}
+
 function bullet.new(atlasDrawCache)

-  local self={}
-  self._atlasDrawCache=atlasDrawCache
-  self.getAtlasDrawCache=bullet.getAtlasDrawCache
-  self.update=bullet.update
-  self.draw=bullet.draw
+  local self
+  if #bullet.__dead_pool > 0 then
+    self = table.remove(bullet.__dead_pool)
+  else
+    self = {}
+   self._atlasDrawCache=atlasDrawCache
+    self.getAtlasDrawCache=bullet.getAtlasDrawCache
+    self.update=bullet.update
+    self.draw=bullet.draw
+    self.getOwner=bullet.getOwner
+    self.setOwner=bullet.setOwner
+    self.getDamage=bullet.getDamage
+    self.setDamage=bullet.setDamage
+    self.getDuration=bullet.getDuration
+    self.setDuration=bullet.setDuration
+    self.getSpeed=bullet.getSpeed
+    self.setSpeed=bullet.setSpeed
+    self.getX=bullet.getX
+    self.setX=bullet.setX
+    self.getY=bullet.getY
+    self.setY=bullet.setY
+    self.getAngle=bullet.getAngle
+    self.setAngle=bullet.setAngle
+    self.getRemove=bullet.getRemove
+    self.setRemove=bullet.setRemove
+    self.getRadius=bullet.getRadius
+    self.setRadius=bullet.setRadius
+    table.insert(bullet.__live_pool,self)
+  end
+  bullet.__reset(self)
+  return self
+end
+
+function bullet.__reset(self)
   self._owner=nil --init
-  self.getOwner=bullet.getOwner
-  self.setOwner=bullet.setOwner
   self._damage=nil --init
-  self.getDamage=bullet.getDamage
-  self.setDamage=bullet.setDamage
   self._duration=nil --init
-  self.getDuration=bullet.getDuration
-  self.setDuration=bullet.setDuration
   self._speed=nil --init
-  self.getSpeed=bullet.getSpeed
-  self.setSpeed=bullet.setSpeed
   self._x=nil --init
-  self.getX=bullet.getX
-  self.setX=bullet.setX
   self._y=nil --init
-  self.getY=bullet.getY
-  self.setY=bullet.setY
   self._angle=nil --init
-  self.getAngle=bullet.getAngle
-  self.setAngle=bullet.setAngle
-  self._remove=nil
-  self.getRemove=bullet.getRemove
-  self.setRemove=bullet.setRemove
-  self._radius=16
-  self.getRadius=bullet.getRadius
-  self.setRadius=bullet.setRadius
-  return self
+  self._remove=nil --init
+  self._radius=16 --init
+end
+
+function bullet:destroy()
+  for index,obj in pairs(bullet.__live_pool) do
+    if obj == self then
+      if #bullet.__dead_pool < bullet.__dead_pool_max then
+        table.insert(bullet.__dead_pool,
+          table.remove(bullet.__live_pool,index))
+      else
+        table.remove(bullet.__live_pool,index)
+      end
+      return true -- object has been marked as dead
+    end
+  end
+  return false -- object was not in live_pool
+end
+
+function bullet:getAtlasDrawCache()
+  return self._atlasDrawCache
 end

 function bullet:update(dt)
@@ -68,10 +101,6 @@ function bullet:draw(x,y,scale)
   end
 end

-function bullet:getAtlasDrawCache()
-  return self._atlasDrawCache
-end
-
 function bullet:getOwner()
   return self._owner
 end