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Category: one-liners

new Sprite() One-liner

By Zevan
var s:Sprite = Sprite(addChild(new Sprite()));

A way to make a new sprite, add it to the display list and store a reference to it.

Figured this out on my own… but have since seen it around on a few flash blogs here and there… thought it deserved a post.

Read snippet: new Sprite() One-liner

XOR Color Invert

By Zevan
var yellow:uint = 0xFFFF00;

// draws yellow circle
with(graphics) beginFill(yellow), drawCircle(100,100,50);

// invert the color using XOR assignment
// yellow becomes 0x0000FF
yellow ^= 0xFFFFFF;

// draws blue  circle 
with(graphics) beginFill(yellow), drawCircle(200,100,50);

Just a fun use for XOR. You could also do it without XOR assignment:

with(graphics) beginFill(yellow ^ 0xFFFFFF), drawCircle(200,100,50);

Playing a little with bitwise operators is a good way to make sure you understand them. Try tweaking this trace statement:

trace((0x543210 ^ 0xFFFFFF).toString(16));

If you’d like to read about bitwise operators, I recommend wikipedia’s article.

Read snippet: XOR Color Invert