After getting my Wii remote hooked up with the WiiFlash Server, I knocked up this quick Flash demo which draws the blobs of infrared light the Wii remote detects (it can track up to 4 blobs at once), just like the Wii console’s sensitivity setting dialog does. I just gave each blob a different colour and clear the graphics on pressing the ‘A’ button.

Here’s the code to get it working – requires WiiFlash Server:

import org.wiiflash.Wiimote;
import org.wiiflash.IR;
import org.wiiflash.events.ButtonEvent;
import org.wiiflash.events.WiimoteEvent;
import flash.events.*;

var myWiimote:Wiimote = new Wiimote();
myWiimote.connect();myWiimote.addEventListener(WiimoteEvent.UPDATE, onUpdated);
myWiimote.addEventListener(ButtonEvent.A_PRESS, onAPressed);

function onUpdated (pEvt:WiimoteEvent):void {
var ir:IR = pEvt.target.ir;
var irWidth:Number = 400;
var irHeight:Number = 400;
var irSize:Number = 4;
if (ir.p1) drawCircle(ir.x1*irWidth, ir.y1*irHeight, ir.size1*irSize, 0xff0000);
if (ir.p2) drawCircle(ir.x2*irWidth, ir.y2*irHeight, ir.size2*irSize, 0x00ff00);
if (ir.p3) drawCircle(ir.x3*irWidth, ir.y3*irHeight, ir.size3*irSize, 0x0000ff);
if (ir.p4) drawCircle(ir.x4*irWidth, ir.y4*irHeight, ir.size4*irSize, 0xffff00);
}

function onAPressed (pEvt:ButtonEvent):void {
graphics.clear();
pEvt.target.rumbleTimeout = 50;
}

function drawCircle (x:Number, y:Number, size:Number, colour:Number=0xffffff):void {
graphics.beginFill(colour, .2);
graphics.drawCircle(x,y,size);
}