foster/liabru-matter-js
0
0
Fork 0
mirror of https://github.com/liabru/matter-js.git synced 2024-11-30 10:20:52 -05:00
Code Issues Wiki Activity

removed Manager, replaced with Pairs

Browse source
This commit is contained in:
liabru 2014-03-24 00:47:51 +00:00
parent 13fde400ba
commit 4514f2d598
1 changed files with 0 additions and 118 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

118
src/collision/Manager.js
View file

@ -1,118 +0,0 @@
/**
* _Internal Class_, not generally used outside of the engine's internals.
*
* @class Manager
*/
var Manager = {};
(function() {
var _pairMaxIdleLife = 1000;
/**
* Description
* @method updatePairs
* @param {object} pairs
* @param {collision[]} collisions
*/
Manager.updatePairs = function(pairs, collisions, timestamp) {
var pairsList = pairs.list,
pairsTable = pairs.table,
collisionStart = pairs.collisionStart,
collisionEnd = pairs.collisionEnd,
collisionActive = pairs.collisionActive,
activePairIds = [],
collision,
pairId,
pair,
i;
// clear collision state arrays, but maintain old reference
collisionStart.length = 0;
collisionEnd.length = 0;
collisionActive.length = 0;
for (i = 0; i < collisions.length; i++) {
collision = collisions[i];
if (collision.collided) {
pairId = Pair.id(collision.bodyA, collision.bodyB);
activePairIds.push(pairId);
if (pairId in pairsTable) {
// pair already exists (but may or may not be active)
pair = pairsTable[pairId];
if (pair.isActive) {
// pair exists and is active
collisionActive.push(pair);
} else {
// pair exists but was inactive, so a collision has just started again
collisionStart.push(pair);
}
// update the pair
Pair.update(pair, collision, timestamp);
} else {
// pair did not exist, create a new pair
pair = Pair.create(collision, timestamp);
pairsTable[pairId] = pair;
// push the new pair
collisionStart.push(pair);
pairsList.push(pair);
}
}
}
// deactivate previously active pairs that are now inactive
for (i = 0; i < pairsList.length; i++) {
pair = pairsList[i];
if (pair.isActive && activePairIds.indexOf(pair.id) === -1) {
Pair.setActive(pair, false, timestamp);
collisionEnd.push(pair);
}
}
};
/**
* Description
* @method removeOldPairs
* @param {object} pairs
*/
Manager.removeOldPairs = function(pairs, timestamp) {
var pairsList = pairs.list,
pairsTable = pairs.table,
indexesToRemove = [],
pair,
collision,
pairIndex,
i;
for (i = 0; i < pairsList.length; i++) {
pair = pairsList[i];
collision = pair.collision;
// never remove sleeping pairs
if (collision.bodyA.isSleeping || collision.bodyB.isSleeping) {
pair.timeUpdated = timestamp;
continue;
}
// if pair is inactive for too long, mark it to be removed
if (timestamp - pair.timeUpdated > _pairMaxIdleLife) {
indexesToRemove.push(i);
}
}
// remove marked pairs
for (i = 0; i < indexesToRemove.length; i++) {
pairIndex = indexesToRemove[i] - i;
pair = pairsList[pairIndex];
delete pairsTable[pair.id];
pairsList.splice(pairIndex, 1);
}
};
})();