mirror of
https://github.com/photonstorm/phaser
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50 lines
1.5 KiB
JavaScript
50 lines
1.5 KiB
JavaScript
/**
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* @author Richard Davey <rich@photonstorm.com>
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* @copyright 2020 Photon Storm Ltd.
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* @license {@link https://opensource.org/licenses/MIT|MIT License}
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*/
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/**
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* [description]
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*
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* @function Phaser.Physics.Impact.SeparateX
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* @since 3.0.0
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*
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* @param {Phaser.Physics.Impact.World} world - [description]
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* @param {Phaser.Physics.Impact.Body} left - [description]
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* @param {Phaser.Physics.Impact.Body} right - [description]
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* @param {Phaser.Physics.Impact.Body} [weak] - [description]
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*/
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var SeparateX = function (world, left, right, weak)
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{
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var nudge = left.pos.x + left.size.x - right.pos.x;
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// We have a weak entity, so just move this one
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if (weak)
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{
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var strong = (left === weak) ? right : left;
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weak.vel.x = -weak.vel.x * weak.bounciness + strong.vel.x;
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var resWeak = world.collisionMap.trace(weak.pos.x, weak.pos.y, weak === left ? -nudge : nudge, 0, weak.size.x, weak.size.y);
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weak.pos.x = resWeak.pos.x;
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}
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else
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{
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var v2 = (left.vel.x - right.vel.x) / 2;
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left.vel.x = -v2;
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right.vel.x = v2;
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var resLeft = world.collisionMap.trace(left.pos.x, left.pos.y, -nudge / 2, 0, left.size.x, left.size.y);
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left.pos.x = Math.floor(resLeft.pos.x);
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var resRight = world.collisionMap.trace(right.pos.x, right.pos.y, nudge / 2, 0, right.size.x, right.size.y);
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right.pos.x = Math.ceil(resRight.pos.x);
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}
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};
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module.exports = SeparateX;
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