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Bouncing Ball
Author: Williama

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1. Create a movie clip of a ball

2. Drag an instance of it to the stage and name the instance "ball"

3. Create a new layer and name this "actions"

4. Add the following script to first frame of the actions layer

function xcoord(vi,time){

return vi*Math.cos(80*3.14/180)*time;

}

function ycoord(vi,time){

return vi*Math.sin(80*3.14/180)*t-0.5*t*t;

}

initx=30;

inity=400;

v=30;

t=0;

n=0;

r=0;

ball.onEnterFrame=function(){

t++;

n++;

ball._x=initx+xcoord(v,t);

ball._y=inity-ycoord(v,t);

ball._rotation=t*30;

duplicateMovieClip(ball,"newball"+n,n);

eval("newball"+n)._alpha=ball._alpha/10;

if (ball._y>inity){

initx=ball._x;

t=0;

v*=0.7;

}

if (ball._x>=300){

removeMovieClip("newball"+r);

r++;

}

}

1

» Level Intermediate

Added: : 2004-12-17 Rating: 5.07 Votes: 23 Hits: 317

» Author

I like physics and math a lot. I always to simulate some physical phenomena in flash as a hobbt. Here is one of my favorites.

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