test

test.rune.js

rune();

var update = rune.update();

var player = {x: 0, y: 0, width: 20, height: 20, dir: 1};

function move(p){
    p.x += 100 * this.deltaTime * p.dir;
    return p;
}

function leftDir(p){
    p.dir = -1;
}

function rightDir(p){
    p.dir = 1;
}

update(rune.clear);
update(player)(move)(rune.fillRect);
rune.watch(player, "x", rune.ge(200))(leftDir);
rune.watch(player, "x", rune.le(0))(rightDir);