playcanvas/build/playcanvas/src/framework/components/collision/component.js

Open-source WebGL/WebGPU 3D engine for the web

import { Quat } from "../../../core/math/quat.js";
import { Vec3 } from "../../../core/math/vec3.js";
import { Asset } from "../../asset/asset.js";
import { Component } from "../component.js";
const _vec3 = new Vec3();
const _quat = new Quat();
class CollisionComponent extends Component {
	static EVENT_CONTACT = "contact";
	static EVENT_COLLISIONSTART = "collisionstart";
	static EVENT_COLLISIONEND = "collisionend";
	static EVENT_TRIGGERENTER = "triggerenter";
	static EVENT_TRIGGERLEAVE = "triggerleave";
	_type = "box";
	_halfExtents = new Vec3(0.5, 0.5, 0.5);
	_linearOffset = new Vec3();
	_angularOffset = new Quat();
	_radius = 0.5;
	_axis = 1;
	_height = 2;
	_asset = null;
	_renderAsset = null;
	_convexHull = false;
	_shape = null;
	_model = null;
	_render = null;
	_checkVertexDuplicates = true;
	_initialized = false;
	_compoundParent = null;
	_hasOffset = false;
	_builtWorldScale = null;
	constructor(system, entity) {
		super(system, entity);
		this.entity.on("insert", this._onInsert, this);
	}
	set type(arg) {
		if (this._type === arg) {
			return;
		}
		const previous = this._type;
		this._type = arg;
		this.system.changeType(this, previous, arg);
	}
	get type() {
		return this._type;
	}
	set halfExtents(arg) {
		if (arg instanceof Vec3) {
			this._halfExtents.copy(arg);
		} else {
			this._halfExtents.set(arg[0], arg[1], arg[2]);
		}
		if (this._initialized && this._type === "box") {
			this.system.recreatePhysicalShapes(this);
		}
	}
	get halfExtents() {
		return this._halfExtents;
	}
	set linearOffset(arg) {
		if (arg instanceof Vec3) {
			this._linearOffset.copy(arg);
		} else {
			this._linearOffset.set(arg[0], arg[1], arg[2]);
		}
		this._updateHasOffset();
		if (this._initialized) {
			this.system.recreatePhysicalShapes(this);
		}
	}
	get linearOffset() {
		return this._linearOffset;
	}
	set angularOffset(arg) {
		if (arg instanceof Quat) {
			this._angularOffset.copy(arg);
		} else if (arg.length === 3) {
			this._angularOffset.setFromEulerAngles(arg[0], arg[1], arg[2]);
		} else {
			this._angularOffset.set(arg[0], arg[1], arg[2], arg[3]);
		}
		this._updateHasOffset();
		if (this._initialized) {
			this.system.recreatePhysicalShapes(this);
		}
	}
	get angularOffset() {
		return this._angularOffset;
	}
	set radius(arg) {
		this._radius = arg;
		const t = this._type;
		if (this._initialized && (t === "sphere" || t === "capsule" || t === "cylinder" || t === "cone")) {
			this.system.recreatePhysicalShapes(this);
		}
	}
	get radius() {
		return this._radius;
	}
	set axis(arg) {
		this._axis = arg;
		const t = this._type;
		if (this._initialized && (t === "capsule" || t === "cylinder" || t === "cone")) {
			this.system.recreatePhysicalShapes(this);
		}
	}
	get axis() {
		return this._axis;
	}
	set height(arg) {
		this._height = arg;
		const t = this._type;
		if (this._initialized && (t === "capsule" || t === "cylinder" || t === "cone")) {
			this.system.recreatePhysicalShapes(this);
		}
	}
	get height() {
		return this._height;
	}
	set asset(arg) {
		const assets = this.system.app.assets;
		if (this._asset) {
			const asset = assets.get(this._asset);
			if (asset) {
				asset.off("remove", this.onAssetRemoved, this);
			}
		}
		this._asset = arg instanceof Asset ? arg.id : arg;
		if (arg) {
			const asset = assets.get(this._asset);
			if (asset) {
				asset.off("remove", this.onAssetRemoved, this);
				asset.on("remove", this.onAssetRemoved, this);
			}
		}
		if (this._initialized && this._type === "mesh") {
			if (!arg) {
				this._model = null;
			}
			this.system.recreatePhysicalShapes(this);
		}
	}
	get asset() {
		return this._asset;
	}
	set renderAsset(arg) {
		const assets = this.system.app.assets;
		if (this._renderAsset) {
			const asset = assets.get(this._renderAsset);
			if (asset) {
				asset.off("remove", this.onRenderAssetRemoved, this);
			}
		}
		this._renderAsset = arg instanceof Asset ? arg.id : arg;
		if (arg) {
			const asset = assets.get(this._renderAsset);
			if (asset) {
				asset.off("remove", this.onRenderAssetRemoved, this);
				asset.on("remove", this.onRenderAssetRemoved, this);
			}
		}
		if (this._initialized && this._type === "mesh") {
			if (!arg) {
				this._render = null;
			}
			this.system.recreatePhysicalShapes(this);
		}
	}
	get renderAsset() {
		return this._renderAsset;
	}
	set convexHull(arg) {
		this._convexHull = arg;
		if (this._initialized && this._type === "mesh") {
			this.system.doRecreatePhysicalShape(this);
		}
	}
	get convexHull() {
		return this._convexHull;
	}
	set shape(arg) {
		this._shape = arg;
	}
	get shape() {
		return this._shape;
	}
	set model(arg) {
		this._model = arg;
		if (this._initialized && this._type === "mesh") {
			this.system.doRecreatePhysicalShape(this);
		}
	}
	get model() {
		return this._model;
	}
	set render(arg) {
		this._render = arg;
		if (this._initialized && this._type === "mesh") {
			this.system.doRecreatePhysicalShape(this);
		}
	}
	get render() {
		return this._render;
	}
	set checkVertexDuplicates(arg) {
		this._checkVertexDuplicates = arg;
	}
	get checkVertexDuplicates() {
		return this._checkVertexDuplicates;
	}
	_updateHasOffset() {
		this._hasOffset = !this._linearOffset.equals(Vec3.ZERO) || !this._angularOffset.equals(Quat.IDENTITY);
	}
	onAssetRemoved(asset) {
		asset.off("remove", this.onAssetRemoved, this);
		if (this._asset === asset.id) {
			this.asset = null;
		}
	}
	onRenderAssetRemoved(asset) {
		asset.off("remove", this.onRenderAssetRemoved, this);
		if (this._renderAsset === asset.id) {
			this.renderAsset = null;
		}
	}
	_onInsert(parent) {
		const world = this.system.physicsWorld;
		if (!world) {
			return;
		}
		if (this._compoundParent) {
			this.system.recreatePhysicalShapes(this);
		} else if (!this.entity.rigidbody) {
			let ancestor = this.entity.parent;
			while (ancestor) {
				if (ancestor.collision && ancestor.collision.type === "compound") {
					if (world.getCompoundChildCount(ancestor.collision.shape) === 0) {
						this.system.recreatePhysicalShapes(ancestor.collision);
					} else {
						this.system.recreatePhysicalShapes(this);
					}
					break;
				}
				ancestor = ancestor.parent;
			}
		}
	}
	_updateEachDescendantTransform(entity) {
		if (!entity.collision || entity.collision._compoundParent !== this.collision._compoundParent) {
			return;
		}
		this.collision.system.updateCompoundChildTransform(entity, false);
	}
	_updateCompound() {
		const entity = this.entity;
		if (entity._dirtyWorld) {
			let dirty = entity._dirtyLocal;
			let parent = entity;
			while (parent && !dirty) {
				if (parent.collision && parent.collision === this._compoundParent) {
					break;
				}
				if (parent._dirtyLocal) {
					dirty = true;
				}
				parent = parent.parent;
			}
			if (dirty) {
				entity.forEach(this._updateEachDescendantTransform, entity);
				const bodyComponent = this._compoundParent.entity.rigidbody;
				if (bodyComponent) {
					bodyComponent.activate();
				}
			}
		}
	}
	getShapePosition() {
		const pos = this.entity.getPosition();
		if (this._hasOffset) {
			const rot = this.entity.getRotation();
			const lo = this._linearOffset;
			_quat.copy(rot).transformVector(lo, _vec3);
			return _vec3.add(pos);
		}
		return pos;
	}
	getShapeRotation() {
		const rot = this.entity.getRotation();
		if (this._hasOffset) {
			return _quat.copy(rot).mul(this._angularOffset);
		}
		return rot;
	}
	onEnable() {
		if (this._type === "mesh" && (this._asset || this._renderAsset) && this._initialized) {
			const asset = this.system.app.assets.get(this._asset || this._renderAsset);
			if (asset && (!asset.resource || !this._shape)) {
				this.system.recreatePhysicalShapes(this);
				return;
			}
		}
		if (this.entity.rigidbody) {
			if (this.entity.rigidbody.enabled) {
				this.entity.rigidbody.enableSimulation();
			}
		} else if (this._compoundParent && this !== this._compoundParent) {
			if (this.system.physicsWorld.getCompoundChildCount(this._compoundParent.shape) === 0) {
				this.system.recreatePhysicalShapes(this._compoundParent);
			} else {
				this.system.updateCompoundChildTransform(this.entity, true);
				if (this._compoundParent.entity.rigidbody) {
					this._compoundParent.entity.rigidbody.activate();
				}
			}
		} else if (this.entity.trigger) {
			this.entity.trigger.enable();
		}
	}
	onDisable() {
		if (this.entity.rigidbody) {
			this.entity.rigidbody.disableSimulation();
		} else if (this._compoundParent && this !== this._compoundParent) {
			if (!this._compoundParent.entity._destroying) {
				this.system._removeCompoundChild(this._compoundParent, this._shape);
				if (this._compoundParent.entity.rigidbody) {
					this._compoundParent.entity.rigidbody.activate();
				}
			}
		} else if (this.entity.trigger) {
			this.entity.trigger.disable();
		}
	}
	onBeforeRemove() {
		if (this.asset) {
			this.asset = null;
		}
		if (this.renderAsset) {
			this.renderAsset = null;
		}
		this.entity.off("insert", this._onInsert, this);
		this.off();
	}
}
export {
	CollisionComponent
};