- Reestructuració completa

data/utils/util.lua

@@ -0,0 +1,29 @@
+util={}
+
+function util.inside(x, y, rectangle)
+    if x >= rectangle[1] and
+        y >= rectangle[2] and
+        x <  rectangle[3]+rectangle[1] and
+        y <  rectangle[4]+rectangle[2] then
+        return true
+    else
+        return false
+    end
+end
+
+function util.aabb(sprite)
+    local x = sprite.pos.x + sprite.bbo.left
+    local y = sprite.pos.y + sprite.bbo.top
+    local w = sprite.size.w - sprite.bbo.right - sprite.bbo.left
+    local h = sprite.size.h - sprite.bbo.bottom - sprite.bbo.top
+    return x, y, w, h
+end
+
+function util.check_aabb_collision(x1,y1,w1,h1, x2,y2,w2,h2)
+    return ( x1 < x2 + w2 and x1 + w1 > x2 and y1 < y2 + h2 and y1 + h1 > y2 )
+end
+
+function util.luminance(r, g, b)
+    return (0.2126*r + 0.7152*g + 0.0722*b)/255
+end
+