diff --git a/spatialhash.lua b/spatialhash.lua
index fa3fa79..2db756f 100644
--- a/spatialhash.lua
+++ b/spatialhash.lua
@@ -37,7 +37,6 @@ end
 -- cells = {[0] = {[0] = <>, [1] = <>, ... }, [1] = {...}, ...}
 local cells_meta = {}
 function cells_meta.__newindex(tbl, key, val)
-	print('newindex')
 	local cell = rawget(tbl, key.x)
 	if not cell then
 		rawset(tbl, key.x, {[key.y] = val})
@@ -82,7 +81,7 @@ function Spatialhash:insert(obj, ul, lr)
 	local lr = self:cellCoords(lr)
 	for i = ul.x,lr.x do
 		for k = ul.y,lr.y do
-			
+			rawset(self.cells[{x=i,y=k}], obj, obj)
 		end
 	end
 end
@@ -108,6 +107,7 @@ end
 
 -- update an objects position
 function Spatialhash:update(obj, ul_old, lr_old, ul_new, lr_new)
+	print('hash:update', obj)
 	local ul_old, lr_old = self:cellCoords(ul_old), self:cellCoords(lr_old)
 	local ul_new, lr_new = self:cellCoords(ul_new), self:cellCoords(lr_new)
 
@@ -146,17 +146,18 @@ end
 
 function Spatialhash:draw(how, show_empty, print_key)
 	if show_empty == nil then show_empty = true end
-	for k,cell in pairs(self.cells) do
-		local empty = true
-		(function() for _ in pairs(cell) do empty = false; return end end)()
-		if show_empty or not empty then
-			local x,y = k:match("([^,]+),([^,]+)")
-			x = x * self.cell_size
-			y = y * self.cell_size
-			love.graphics.rectangle(how, x,y, self.cell_size, self.cell_size)
+	for k1,v in pairs(self.cells) do
+		for k2,cell in pairs(v) do
+			local empty = true
+			(function() for _ in pairs(cell) do empty = false; return end end)()
+			if show_empty or not empty then
+				local x = k1 * self.cell_size
+				local y = k2 * self.cell_size
+				love.graphics.rectangle(how or 'line', x,y, self.cell_size, self.cell_size)
 
-			if print_key then
-				love.graphics.print(k, x+3,y+3)
+				if print_key then
+					love.graphics.print(("%d:%d"):format(k1,k2), x+3,y+3)
+				end
 			end
 		end
 	end