solutions/16_lasers.md

The Chameleon Way

someone328

    // using canvas to draw the line
        var ctx = map.getCanvasContext();
        ctx.beginPath();
        ctx.strokeStyle = color; //make lasers colored
        ctx.lineWidth = 5;
        ctx.moveTo(x1, y1);
        ctx.lineTo(x2, y2);
        ctx.stroke();
        
        //color switcher by telephone
        player.setColor('red');
        player.setPhoneCallback(function(){
        var color = player.getColor();
        switch(color)
        {
            case 'red':
                player.setColor('yellow');
                break;
            case 'yellow':
                player.setColor('teal');
                break;
            case 'teal':
                player.setColor('red');
                break;
        }
    });

esolitos

ctx.strokeStyle = color;

//---

var j = 0;
var colors = ['red', 'yellow', 'teal'];

player.setPhoneCallback( function(){
    player.setColor( colors[ (j++)%3 ] );
} );

mmccall0813

ctx.strokeStyle = color;

//

  var player = map.getPlayer();
player.setPhoneCallback(function(){
        if(player.getColor() == 'teal'){player.setColor('red')}else{
        if(player.getColor() == 'red'){player.setColor('yellow')}else{
        if(player.getColor() == 'yellow'){player.setColor('teal')}else{
        player.setColor('teal')}}}});

Function Redefinition

Jhack (giacgbj)

Nothing in the first area.

The following code in the second area:

getRandomInt = function(){return 600;};

Closures

ZER0

 
// using canvas to draw the line
var ctx = map.getCanvasContext();
ctx.beginPath();
ctx.strokeStyle = 'white';
ctx.lineWidth = 5;
ctx.moveTo(x1, y1);
ctx.lineTo(x2, y2);
ctx.stroke();
// take advantages of the closure create by `map.createLine`
// so all lasers will be of the same color of the player
color = player.getColor();