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optimised Detector.collisions

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liabru 2021-05-01 14:31:08 +01:00
parent e4b35d3961
commit efede6e22d
1 changed files with 13 additions and 8 deletions
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21
src/collision/Detector.js
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@ -25,20 +25,26 @@ var Bounds = require('../geometry/Bounds');
*/
Detector.collisions = function(broadphasePairs, engine) {
var collisions = [],
pairsTable = engine.pairs.table;
pairsTable = engine.pairs.table,
broadphasePairsLength = broadphasePairs.length,
canCollide = Detector.canCollide,
overlaps = Bounds.overlaps,
collides = SAT.collides,
pairId = Pair.id,
i;
for (var i = 0; i < broadphasePairs.length; i++) {
for (i = 0; i < broadphasePairsLength; i++) {
var bodyA = broadphasePairs[i][0],
bodyB = broadphasePairs[i][1];
if ((bodyA.isStatic || bodyA.isSleeping) && (bodyB.isStatic || bodyB.isSleeping))
continue;
if (!Detector.canCollide(bodyA.collisionFilter, bodyB.collisionFilter))
if (!canCollide(bodyA.collisionFilter, bodyB.collisionFilter))
continue;
// mid phase
if (Bounds.overlaps(bodyA.bounds, bodyB.bounds)) {
if (overlaps(bodyA.bounds, bodyB.bounds)) {
var partsALength = bodyA.parts.length,
partsBLength = bodyB.parts.length;
@ -48,13 +54,12 @@ var Bounds = require('../geometry/Bounds');
for (var k = partsBLength > 1 ? 1 : 0; k < partsBLength; k++) {
var partB = bodyB.parts[k];
if ((partA === bodyA && partB === bodyB) || Bounds.overlaps(partA.bounds, partB.bounds)) {
if ((partA === bodyA && partB === bodyB) || overlaps(partA.bounds, partB.bounds)) {
// find a previous collision we could reuse
var pairId = Pair.id(partA, partB),
pair = pairsTable[pairId];
var pair = pairsTable[pairId(partA, partB)];
// narrow phase
var collision = SAT.collides(partA, partB, pair && pair.isActive ? pair.collision : null);
var collision = collides(partA, partB, pair && pair.isActive ? pair.collision : null);
if (collision.collided) {
collisions.push(collision);