As any platform game, Rubble Rumble 1.0 works just about the same :

- Player movements are based on arrow keys to move; up (jump), left and right (walk/climb).
- The scores indicate the amount of rubbles collected by the player. 1 score = 1 rubble.
- Stage contains rubbles (points/scores), ladders, walls, borders, and obstacles (enemies).
- Gravity force, so that the player can walk/fall like our normal ground.
- The player has about 15 minutes to collect all 'em rubbles.
- Enemies walk/fly freely on the stage, they can't shoot.

detectKeys function (Arrow keys)

function detectKeys() {
var ob = _root.char;
var keyPressed = false;
if (Key.isDown(Key.RIGHT)) {
keyPressed=_root.moveChar(ob, 1, 0);
} else if (Key.isDown(Key.LEFT)) {
keyPressed=_root.moveChar(ob, -1, 0);
} else if (Key.isDown(Key.UP)) {
keyPressed=_root.moveChar(ob, 0, -1);
} else if (Key.isDown(Key.DOWN)) {

keyPressed=_root.moveChar(ob, 0, 1);
}
if (!keyPressed) {
ob.clip.char.gotoAndStop(1);
} else {
ob.clip.char.play();

}
}

getMyCorners function (Wall collision)

function getMyCorners (x, y, ob) {

ob.downY = Math.floor((y+ob.height-1)/game.tileH);
ob.upY = Math.floor((y-ob.height)/game.tileH);
ob.leftX = Math.floor((x-ob.width)/game.tileW);
ob.rightX = Math.floor((x+ob.width-1)/game.tileW);
//check if they are walls
ob.upleft = game["t_"+ob.upY+"_"+ob.leftX].walkable;

ob.downleft = game["t_"+ob.downY+"_"+ob.leftX].walkable;
ob.upright = game["t_"+ob.upY+"_"+ob.rightX].walkable;
ob.downright = game["t_"+ob.downY+"_"+ob.rightX].walkable;
}

Ladders

game.Tile4= function () {};
game.Tile4.prototype.walkable=false;
game.Tile4.prototype.frame=2;
game.Tile4.prototype.ladder=true;
game.Tile4.prototype.item="ladder";
game.Tile5= function () {};

game.Tile5.prototype.walkable=true;
game.Tile5.prototype.frame=1;
game.Tile5.prototype.ladder=true;
game.Tile5.prototype.item="ladder";