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fixed collision incident and reference body mapping

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liabru 2015-02-25 00:12:21 +00:00
parent b8f3784b76
commit 757fffaf20
1 changed files with 8 additions and 6 deletions
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14
src/collision/SAT.js
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@ -46,9 +46,11 @@ var SAT = {};
if (prevCol && canReusePrevCol) {
// if we can reuse the collision result
// we only need to test the previously found axis
var axes = [prevCol.bodyA.axes[prevCol.axisNumber]];
var axisBodyA = collision.axisBody,
axisBodyB = axisBodyA === bodyA ? bodyB : bodyA,
axes = [axisBodyA.axes[prevCol.axisNumber]];
minOverlap = _overlapAxes(prevCol.bodyA.vertices, prevCol.bodyB.vertices, axes);
minOverlap = _overlapAxes(axisBodyA.vertices, axisBodyB.vertices, axes);
collision.reused = true;
if (minOverlap.overlap <= 0) {
@ -74,18 +76,18 @@ var SAT = {};
if (overlapAB.overlap < overlapBA.overlap) {
minOverlap = overlapAB;
collision.bodyA = bodyA;
collision.bodyB = bodyB;
collision.axisBody = bodyA;
} else {
minOverlap = overlapBA;
collision.bodyA = bodyB;
collision.bodyB = bodyA;
collision.axisBody = bodyB;
}
// important for reuse later
collision.axisNumber = minOverlap.axisNumber;
}
collision.bodyA = bodyA.id < bodyB.id ? bodyA : bodyB;
collision.bodyB = bodyA.id < bodyB.id ? bodyB : bodyA;
collision.collided = true;
collision.normal = minOverlap.axis;
collision.depth = minOverlap.overlap;