30 movie clips. *p0 *through p29. They chase the leader movie clip in a swarm; however, to make sure they don’t all occupy the same space, I implemented this code in the onEnterFrame block:
//*pik* is the number of movie clips onstage
for (var i = 0; i<pik-1; i++) {
var dotA:MovieClip = this["p"+i];
for (var j = i+1; j<pik; j++) {
var dotB:MovieClip = this["p"+j];
var dx:Number = dotB._x-dotA._x;
var dy:Number = dotB._y-dotA._y;
var dist:Number = Math.sqrt(dx*dx+dy*dy);
if (dist<5) {
var rx:Number = dx/dist/2;
var ry:Number = dy/dist/2;
dotA._x -= rx;
dotA._y -= ry;
dotB._x += rx;
dotB._y += ry;
}
}
}
All well and good: that code successfully separates the Movie Clips when they run into one another. I added terrain, too, implementing this:
for (var i = 0; i<pik; i++) {
var dotA:MovieClip = this["p"+i];
for (a=0; a<360; a += 45) {
var x:Number = Math.sin(a*(Math.PI/180));
var y:Number = Math.cos(a*(Math.PI/180));
while (land.hitTest(dotA._x+x*3, dotA._y-y*3, true)) {
dotA._x -= x/2;
dotA._y += y/2;
}
}
}
Problem is, the little buggers are still zooming through land. It’s a conflict between the two blocks. They get moved apart, one gets too far “into” the terrain, and is propelled outwards in the wrong direction.
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Try it yourself: walk into the little fish hook shape, trap some *pikmin *in there, and then walk above it. Notice that those inside disappear, and then reappear outside.
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