AS gravity problem

[D-SuN]

hello there,
I wrote a gravity script that i'm very happy with. the only problem is that if the object falls from a cretant hight, he wall fall through the ground or get stuck in the middle. this is an issue because in the game im making, i realy can have him sticking through the ground. If someone could help me to understand this, explain why it is happerning (please) and how to fix it, much would be appreciated.
this is the script. it wroks well, expet for high hights
onClipEvent (load) {
fallSpeed = .2;
maxFallSpeed =10;
grav_y = 0;
fall = true;
}
//gravity
onClipEvent (enterFrame) {
if (grav_y>MaxFallSpeed) {
grav_y -=1;
}
if (fall == false) {
grav_y = 0;
}
if (fall == true) {
grav_y += fallSpeed;
if (grav_y>0) {
grav_y += fallSpeed;
}
}
if (_root.ground.hitTest(_x, _y, true) == false) {
fall = true;
}
if (_root.ground.hitTest(_x, _y, true)) {
fall = false;
}
this._y += grav_y;
}
onClipEvent (enterFrame) {
if (_root.ground.hitTest(_x, _y, true)) {
this._y -=grav_y;
grav_y = 0;
}
}

[Shinki]

Yea your problem is you are changing the y position by the value of gravity, so when it is moving several points each time your hittest will miss it. I had this problem, I got round it by using a for loop that moves the object 1 point, gravity no. of times, and does a hittest at each.
eg:
for(i=gravityAbs; i>0; i--){ // create an absolute variable beforehand if you sometimes have negative values of gravity.
groundCheck = (check whether your object would hit the ground if moved 1 point)
if (groundCheck){
i=1}
else{
(change y pos by 1 in correct direction)
}
}

[D-SuN]

At 3/6/06 11:29 AM, ShinKi wrote: Yea your problem is you are changing the y position by the value of gravity, so when it is moving several points each time your hittest will miss it. I had this problem, I got round it by using a for loop that moves the object 1 point, gravity no. of times, and does a hittest at each.

woo man. thats awome its working. i dont understand the script at all. i pasted it in and tryed to figure it out. am i able to use it as walls on the x axis?

[nokotin]

woo man. thats awome its working. i dont understand the script at all. i pasted it in and tryed to figure it out. am i able to use it as walls on the x axis?

how can you not understand a script you wrote?

[D-SuN]

At 3/6/06 02:24 PM, nokotin wrote:

woo man. thats awome its working. i dont understand the script at all. i pasted it in and tryed to figure it out. am i able to use it as walls on the x axis?

how can you not understand a script you wrote?

Who says i was talking about my spript?

[Shinki]

yea, use it for x movement too =)