scratchfoundation/paper.js
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Fix Paperoids example and use Path#getIntersections for collision detection.

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Jonathan Puckey 2013-03-04 20:39:13 +01:00
parent 2666e60f28
commit 841c99d6d8
1 changed files with 4 additions and 18 deletions
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22
examples/Games/Paperoids.html
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@ -125,6 +125,7 @@
path.closed = true;
var thrust = new Path([-8, -4], [-14, 0], [-8, 4]);
var group = new Group(path, thrust);
group.applyMatrix = true;
group.position = view.bounds.center;
return {
item: group,
@ -231,28 +232,13 @@
// if bounding rect collision, do a line intersection test
if (crash > -1) {
var hit = false;
var pos = Rocks.children[crash].position;
var shipSegments = this.item.firstChild.segments;
var index = Rocks.children[crash].typeIndex;
var tempRock = Rocks.shapes[index].clone();
tempRock.transform(Rocks.children[crash].matrix);
tempRock.remove();
var rockSegments = tempRock.segments;
// This code should be able to be simplified alot very soon,
// when Paper.js implements Path#intersects(path);
for (var i = 0; i < rockSegments.length - 1; i++) {
var rockLine = new Line(rockSegments[i].point,
rockSegments[i + 1].point, false);
var shipLine = new Line(shipSegments[0].point,
shipSegments[1].point, false);
var lineHit = shipLine.intersect(rockLine);
if (lineHit) {
hit = true;
break;
}
}
if (hit) Lives.remove();
var intersections = this.item.firstChild.getIntersections(tempRock);
if (intersections.length > 0)
Lives.remove();
}
}
};