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diff --git a/src/broadphase.moon b/src/broadphase.moon
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+
+--[[I was going to write my own physics engine, but decided to just use a library]]
+
+--[[Keeps track of the collisions in the world]]
+mod = ...
+util = require "util"
+bump = require "bump"
+main = require "main" --for debugging
+import Vec3 from util
+
+mod.world = bump.newWorld(8)
+--passes the bottom left x,y and the width,height of the object
+mod.add = (ref,x,y,width,height) ->
+	print("Making phys for ref:",ref)
+	--print("At the time of adding, main.screenpos is",main.screenpos, "x:", x, "y:",y)
+	--print("Width:",width, "height", height)
+	--print("ref.node is", ref.node)
+	graphic_x = 0--x/4
+	graphic_y = 0--y --+ (height / 2)
+	--print("graphic_y:",graphic_y)
+	physx = x
+	physy = y
+	--lx = x - main.screenpos.x - (width / 2)
+	--ly = y - main.screenpos.y - (height / 2)
+	lx = x --+ (width / 2)
+	ly = y --+ (height / 2)
+	--tn = am.translate(lx,ly)\tag("position")
+	--node = tn ^ am.rect(0,0,width,height,vec4(0.5,0.5,0.5,0.5))\tag("sprite")
+	--(main.world("world_platforms"))\append(node) --for debugging
+	--print("ref node:",ref.node)
+	--print("positionnode:",(ref.node)("position"))
+	--print("ref's children:")
+	--for k,v in ref.node\child_pairs()
+		--print(k,v)
+	--[[The debug display for the physics box]]
+	positionnode = ref.node
+	--positionnode\append(am.rect(-width/2,-height/2, width/2,height/2,vec4(1.0,0.0,0.0,1.0))\tag("dsprite"))
+	--positionnode\append(am.rect(x , y , x + width, y - height,vec4(1.0,0.0,0.0,0.5))\tag("dsprite"))
+	--positionnode\append(am.rect(lx,ly,lx + width,ly + height,vec4(0.5,0.5,0.5,0.5))\tag("dsprite"))
+	--[[The actual physics object for bump.lua]]
+	mod.world\add(ref,physx,physy,width,height)
+	--mod.world\add(ref,x - (width/2),y,width,height)
+	print("physics node:",node)
+	node
+
+mod.update = (ref,x,y,newwidth,newheight) ->
+	mod.world\update(ref,x,y,newwidth,newheight)
+
+mod.move = (ref,x,y,filter) ->
+	mod.world\move(ref,x,y,filter)
+
+mod.remove = (ref) ->
+	mod.world\remove(ref)
+
+mod.check = (x,y) ->
+	mod.world\queryPoint(x,y)
+
+
+class PhysGroup
+	new: (offset, size, extra = {}) =>
+		@offset = offset
+		@size = size
+		@extra = extra
+
+mod.gravity = 0.5
+mod.term_fall_vel = 10
+mod.PhysGroup = PhysGroup
+mod
+