ok first make you player and make him a movie clip name the movie clip "player"
then make sure this dot is in the middle

now add this to your player
onClipEvent (load) {
y = jump=0;
speed = 5;
}
onClipEvent (enterFrame) {
xmax = this.getBounds(_root).xMax;
xmin = this.getBounds(_root).xMin;
ymax = this.getBounds(_root).yMax;
if (Key.isDown(Key.RIGHT) && !_root.ground.hitTest(xmax+speed, _y, true)) {
_x += speed;
}
if (Key.isDown(Key.LEFT) && !_root.ground.hitTest(xmin-speed, _y, true)) {
_x -= speed;
}
if (_root.ground.hitTest(_x, ymax-(y/2), true)) {
jump = true;
y = 0;
} else {
y -= 2;
jump = false;
}
if (jump && Key.isDown(Key.SPACE)) {
y = 13;
}
_y -= y;
}

next to make your platforms make sure there ONLY BOXES!!!!!!!!!!!! or eles this wont work.... now that you made all of the platforms highlight them make it a movieclip and name it ground then click on the ground and hit the little arrow down at the bottom pointing up click that then you should see
"instance name" click that and make it say ground also... now once you have done that it should work.... try it out

*controls are move right is right arrow move left is left arrow jump is space*

thanks and if this helped you will you please rep me

hmmm nice....it is a little basic but its ok....it will start some people in a good direction...

well its suppose 2 be basic :P thanks tho

so is it only squares?

or does boxes include rectangles?

just makin sure...

rectangels squares all dat crap cant be like a brush line and shit...

I know that silly =D

I was just askin coz i'm too lazy to look at the code right now

Edit: Ummmmm dude....

with the part where you make an MC in the picture it has button selected...

Just to let you know you should fix it

huh lol you lost meh

thats actualy quite a complicated way to do it.
As far as understanding the code.
Like for the platfrom hittest:

for(i=0;i<999;i++){ 

if(_root.player.hitTest("_root.ground" + i)){

ground = eval("_root.ground" +i)

}

if(_root.player.hitTest(ground)){

//do crap

}

}

that way you can have multiple platforms.

no no no no i already no how 2 make multiple 1s you just make the platforms and dont make each 1 a movieclip just higlight them all and make them it and do what i said
ill show you a lil game i made with it fast

http://i17.photobucket.com/albums/b74/skazzi/test1.swf

Ah yes i get you.

:D yah lol its a pretty cool game :( hard tho

Quote from skazzi

huh lol you lost meh

he means that in your picture with the arrow pointing you have "button" selected instead of "movie clip"

ooooooooooo i was doin it fast sorry

it was kinda stupid lol =D

its suppose 2 be dumb and simple i wasnt really tryin 2 get at anythin with that