[WIP] Lluita contra jefe.

data/helpers.lua

@@ -11,6 +11,13 @@ function collision(a, b)
            and (a.y+a.bb.y <= b.y+b.bb.y+b.bb.h)
 end
 
+function half_collision(a, b)
+    return     ((a.x+a.bb.x+a.bb.w >= b.x+b.bb.x) 
+           and (a.x+a.bb.x <= b.x+b.bb.x+b.bb.w) )
+           or ((a.y+a.bb.y+a.bb.h >= b.y+b.bb.y) 
+           and (a.y+a.bb.y <= b.y+b.bb.y+b.bb.h))
+end
+
 function remove_actor(actor)
     for index, value in pairs(actors) do
         if value == actor then