mike: Rewrote paddle col detection; removed comments; less reliance on global variables

love/mike/lib/keys.lua

@@ -33,7 +33,7 @@ function half_speed(object_speed)
 	end
 end
 
-function check_keys(object) 
+function check_keys(object, screen) 
   local newObject = {}
   newObject.x = object.x
   newObject.y = object.y
@@ -49,14 +49,6 @@ function check_keys(object)
 		newObject.x = newObject.x - half_speed(newObject.speed)
 	end
 
---  if love.keyboard.isDown("up") then
---		newObject.y = newObject.y - newObject.speed
---	end
-
---	if love.keyboard.isDown("down") then
---		newObject.y = newObject.y + newObject.speed
---	end
-	
 	if screen_col_detect(newObject, screen) then
 		return newObject
 	else
@@ -64,3 +56,5 @@ function check_keys(object)
 	end
 end
 
+--Inspired by https://love2d.org/wiki/BoundingBox.lua
+--Returns true if boxes overlap