a/s level fade transition source

[mbenney]

i wrote this today, its simple but pretty cool and works well... im using it as level transition. screen fades to black, call back is called to draw the new level before it fades back to clear.

just thought someone might like it =)

code:

---

/* --- params ---

xPos/yPos - top left hand corner position

width/height - rectangle sizes

rate - speed at which the fade goes

colour - colour of rectangle

dep - depth to attach clip

callbac - function to call when the rectangle is mid-fade

--- ----- --- */



function fadeOut(xPos, yPos, width, height, rate, colour, dep, callbac) {

	var a = 12;

	pane = createEmptyMovieClip("pane", dep);

	pane._x = xPos;

	pane._y = yPos;

	pane.onEnterFrame = function() {

		if (a>=120) {

			rate = -rate;

			callbac();

		}

		drawPane(width, height, a += rate, colour);

		if (a<0) {

			pane.removeMovieClip();

			delete this.onEnterFrame;

		}

	};

}

function drawPane(width, height, alpha, colour) {

	with (pane) {

		clear();

		beginFill(colour, alpha);

		lineTo(width, 0);

		lineTo(width, height);

		lineTo(0, height);

		lineTo(0, 0);

		endFill();

	}

}

---

usage example...

code:

---

fadeOut(20, 25, 360, 250, 4, 0x000000, 1, build);

---

[m]

[SaphuA]

Hehe...

That's pretty funny

[mbenney]

it wasnt meant to be a joke!

[mrpauly99]

am i the only one thats too lazy to open flash and try out the code? i love it when you get links to try out

[Squize]

Sweet as ever [m]

Squize.

[jonmack]

Sweet. Just one thing i'm unsure about (been away from flash for 2 months for exams, so forgive me if it's just my memory) but if you remove the movie clip "pane" how can you delete it's onEnterFrame. Does the oEF still exist, even though the clip hass gone?

pane.removeMovieClip();
delete this.onEnterFrame;

T'other way round? Or is it not necessary for delete at all?

Sweet though

[mbenney]

silly me, everyone can take that line out =)

[token 3]

pretty neat, you can save a few fps if you only draw the pane once - right after creating the movie clip and just use the enterFrame loop to alter the alpha

[mbenney]

good call, i dont mind if someone optimises it!