As: Help!!!

[Re2deemer]

onClipEvent (enterFrame) {
if (Key.isDown(87)) {
speed += 5;
}
if (Key.isDown(83)) {
speed -= 5;
}
if (Math.abs(speed)>20) {
speed *= .7;
}
if (Key.isDown(65)) {
_rotation -= 15;
}
if (Key.isDown(68)) {
_rotation += 15;
}
speed *= .60;
x = Math.sin(_rotation*(Math.PI/180))*speed;
y = Math.cos(_rotation*(Math.PI/180))*speed*-1
;
if (!_root.land.hitTest(_x+x, _y+y, true)) {
_x += x;
_y += y;
} else {
speed *= -.8;
}
}

This code has been retrieved from a tutorial here in Newgrounds. In some reason the code does not work. The MC does rotate, but it doesn't move fovard or backward.

PS. I replaced the arrow keys with WASD buttons, but the problem existed before the replacement.

[GuyWithHisComp]

you need to declare the value of speed before you can change it. place this code before your code:
onClipEvent(load){
var speed:Number = 0;
}

[CrustySheet]

onClipEvent(load){
speed= 5;
}

onClipEvent (enterFrame) {
if (Key.isDown(87)) {
_x +=speed;
}
if (Key.isDown(83)) {
_x -=speed;
}
if (Math.abs(speed)>20) {
speed *= .7;
}
if (Key.isDown(65)) {
_rotation -= 15;
}
if (Key.isDown(68)) {
_rotation += 15;
}

[Re2deemer]

thx, snail!!!