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'./Script'; import { b2Vec2, b2BodyDef, b2FixtureDef, b2CircleShape, b2PolygonShape, b2Body, b2Fixture } from '../utils/box2d'; const ShapeType = { CIRCLE: 'circle', POLYGON: 'polygon' }; const BodyType = { STATIC: 'static', DYNAMIC: 'dynamic', KINEMATIC: 'kinematic' }; export default class PhysicsBody extends Script { static factory() { return new PhysicsBody(); } static get propsTypes() { return { ...Script.propsTypes, applyPositionTo: 'string_null', applyRotationTo: 'string_null', applyPositionFrom: 'string_null', applyRotationFrom: 'string_null', bodyType: 'enum(static, dynamic, kinematic)', radius: 'number', vertices: 'array(number)', shapeType: 'enum(circle, polygon)', density: 'number', friction: 'number', restitution: 'number', linearVelocity: 'vec2', angularVelocity: 'number', linearDamping: 'number', angularDamping: 'number', fixedRotation: 'boolean', bullet: 'boolean', sensor: 'boolean', coordsScale: 'number', listenForContacts: 'boolean' }; } static get ShapeType() { return ShapeType; } get applyPositionTo() { return this._applyPositionTo; } set applyPositionTo(value) { if (!value) { this._applyPositionTo = null; this._applyPositionToEntity = null; return; } if (typeof value !== 'string') { throw new Error('`value` is not type of String!'); } const { entity } = this; this._applyPositionTo = value; if (!!entity) { this._applyPositionToEntity = entity.findEntity(value); if (!this._applyPositionToEntity) { throw new Error(`Cannot find entity: ${value}`); } } } get applyRotationTo() { return this._applyRotationTo; } set applyRotationTo(value) { if (!value) { this._applyRotationTo = null; this._applyRotationToEntity = null; return; } if (typeof value !== 'string') { throw new Error('`value` is not type of String!'); } const { entity } = this; this._applyRotationTo = value; if (!!entity) { this._applyRotationToEntity = entity.findEntity(value); if (!this._applyRotationToEntity) { throw new Error(`Cannot find entity: ${value}`); } } } get applyPositionFrom() { return this._applyPositionFrom; } set applyPositionFrom(value) { if (!value) { this._applyPositionFrom = null; this._applyPositionFromEntity = null; return; } if (typeof value !== 'string') { throw new Error('`value` is not type of String!'); } const { entity } = this; this._applyPositionFrom = value; if (!!entity) { this._applyPositionFromEntity = entity.findEntity(value); if (!this._applyPositionFromEntity) { throw new Error(`Cannot find entity: ${value}`); } } } get applyRotationFrom() { return this._applyRotationFrom; } set applyRotationFrom(value) { if (!value) { this._applyRotationFrom = null; this._applyRotationFromEntity = null; return; } if (typeof value !== 'string') { throw new Error('`value` is not type of String!'); } const { entity } = this; this._applyRotationFrom = value; if (!!entity) { this._applyRotationFromEntity = entity.findEntity(value); if (!this._applyRotationFromEntity) { throw new Error(`Cannot find entity: ${value}`); } } } get bodyType() { return this._bodyType; } set bodyType(value) { if (typeof value !== 'string') { throw new Error('`value` is not type of String!'); } this._bodyType = value; this._rebuild = true; } get radius() { return this._radius; } set radius(value) { if (typeof value !== 'number') { throw new Error('`value` is not type of Number!'); } this._radius = value; } get vertices() { return this._vertices; } set vertices(value) { if (!value) { throw new Error('`value` cannot be null!'); } if (value instanceof Array) { value = new Float32Array(value); } if (!(value instanceof Float32Array)) { throw new Error('`value` is not type of either Array or Float32Array!'); } if (value.length % 2 !== 0) { throw new Error('`value` has size undividable by 2!'); } this._vertices = value; } get shapeType() { return this._shapeType; } set shapeType(value) { if (typeof value !== 'string') { throw new Error('`value` is not type of String!'); } this._shapeType = value; this._rebuild = true; } get density() { const { _fixture } = this; return !!_fixture ? _fixture.GetDensity() : this._fixtureDef.density; } set density(value) { if (typeof value !== 'number') { throw new Error('`value` is not type of Number!'); } const { _fixture, _body, density } = this; if (!!_fixture) { _fixture.SetDensity(value); } else { this._fixtureDef.density = value; } if (!!_body && density !== value) { _body.ResetMassData(); } } get friction() { const { _fixture } = this; return !!_fixture ? _fixture.GetFriction() : this._fixtureDef.friction; } set friction(value) { if (typeof value !== 'number') { throw new Error('`value` is not type of Number!'); } const { _fixture } = this; if (!!_fixture) { _fixture.SetFriction(value); } else { this._fixtureDef.friction = value; } } get restitution() { const { _fixture } = this; return !!_fixture ? _fixture.GetRestitution() : this._fixtureDef.restitution; } set restitution(value) { if (typeof value !== 'number') { throw new Error('`value` is not type of Number!'); } const { _fixture } = this; if (!!_fixture) { _fixture.SetRestitution(value); } else { this._fixtureDef.restitution = value; } } get linearVelocity() { const { _body } = this; return !!_body ? _body.GetLinearVelocity() : this._bodyDef.linearVelocity; } set linearVelocity(value) { if (value instanceof Array || value instanceof Float32Array) { value = new b2Vec2(value[0] || 0, value[1] || 0); } else { throw new Error('`value` is not type of either b2Vec2, Array or Float32Array!'); } const { _body } = this; if (!!_body) { _body.SetLinearVelocity(value); } else { this._bodyDef.linearVelocity = value; } } get linearVelocityLength() { return this.linearVelocity.Length(); } get angularVelocity() { const { _body } = this; return !!_body ? _body.GetAngularVelocity() : this._bodyDef.angularVelocity; } set angularVelocity(value) { if (typeof value !== 'number') { throw new Error('`value` is not type of Number!'); } const { _body } = this; if (!!_body) { _body.SetAngularVelocity(value); } else { this._bodyDef.angularVelocity = value; } } get linearDamping() { const { _body } = this; return !!_body ? _body.GetLinearDamping() : this._bodyDef.linearDamping; } set linearDamping(value) { if (typeof value !== 'number') { throw new Error('`value` is not type of Number!'); } const { _body } = this; if (!!_body) { _body.SetLinearDamping(value); } else { this._bodyDef.linearDamping = value; } } get angularDamping() { const { _body } = this; return !!_body ? _body.GetAngularDamping() : this._bodyDef.angularDamping; } set angularDamping(value) { if (typeof value !== 'number') { throw new Error('`value` is not type of Number!'); } const { _body } = this; if (!!_body) { _body.SetAngularDamping(value); } else { this._bodyDef.angularDamping = value; } } get fixedRotation() { const { _body } = this; return !!_body ? _body.IsFixedRotation() : this._bodyDef.fixedRotation; } set fixedRotation(value) { if (typeof value !== 'boolean') { throw new Error('`value` is not type of Boolean!'); } const { _body } = this; if (!!_body) { _body.SetFixedRotation(value); } else { this._bodyDef.fixedRotation = value; } } get bullet() { const { _body } = this; return !!_body ? _body.IsBullet() : this._bodyDef.bullet; } set bullet(value) { if (typeof value !== 'boolean') { throw new Error('`value` is not type of Boolean!'); } const { _body } = this; if (!!_body) { _body.SetBullet(value); } else { this._bodyDef.bullet = value; } } get sensor() { const { _fixture } = this; return !!_fixture ? _fixture.IsSensor() : this._fixtureDef.isSensor; } set sensor(value) { if (typeof value !== 'boolean') { throw new Error('`value` is not type of Boolean!'); } const { _fixture } = this; if (!!_fixture) { _fixture.SetSensor(value); } else { this._fixtureDef.isSensor = value; } } get coordsScale() { return this._coordsScale; } set coordsScale(value) { if (typeof value !== 'number') { throw new Error('`value` is not type of Number!'); } this._coordsScale = value; } get listenForContacts() { return this._listenForContacts; } set listenForContacts(value) { if (typeof value !== 'boolean') { throw new Error('`value` is not type of Boolean!'); } this._listenForContacts = value; } get body() { return this._body; } get world() { return this._world; } get fixture() { return this._fixture; } get mass() { const { _body } = this; return !!_body ? _body.GetMass() : 0; } constructor() { super(); this._applyPositionTo = null; this._applyPositionToEntity = null; this._applyRotationTo = null; this._applyRotationToEntity = null; this._applyPositionFrom = null; this._applyPositionFromEntity = null; this._applyRotationFrom = null; this._applyRotationFromEntity = null; this._bodyType = BodyType.STATIC; this._radius = 1; this._coordsScale = 1; this._listenForContacts = false; this._vertices = null; this._shapeType = ShapeType.CIRCLE; this._bodyDef = new b2BodyDef(); this._fixtureDef = new b2FixtureDef(); this._world = null; this._body = null; this._fixture = null; this._shape = null; this._rebuild = true; } dispose() { super.dispose(); this._destroyBody(); this._applyPositionToEntity = null; this._applyRotationToEntity = null; this._applyPositionFromEntity = null; this._applyRotationFromEntity = null; this._bodyDef = null; this._fixtureDef = null; this._vertices = null; this._world = null; this._body = null; this._fixture = null; this._shape = null; } rebuildBody() { this._rebuild = true; } applyForce(forceX, forceY, pointX, pointY, localSpace = false) { if (typeof forceX !== 'number') { throw new Error('`forceX` is not type of Number!'); } if (typeof forceY !== 'number') { throw new Error('`forceY` is not type of Number!'); } if (typeof pointX !== 'number') { throw new Error('`pointX` is not type of Number!'); } if (typeof pointY !== 'number') { throw new Error('`pointY` is not type of Number!'); } if (typeof localSpace !== 'boolean') { throw new Error('`localSpace` is not type of Boolean!'); } const { _body } = this; if (!!_body) { if (localSpace) { const localPoint = _body.GetLocalPoint(new b2Vec2(pointX, pointY)); _body.ApplyForce( new b2Vec2(forceX, forceY), new b2Vec2(localPoint.x, localPoint.y) ); } else { _body.ApplyForce( new b2Vec2(forceX, forceY), new b2Vec2(pointX, pointY) ); } } } applyTorque(value) { if (typeof value !== 'number') { throw new Error('`value` is not type of Number!'); } const { _body } = this; if (!!_body) { _body.ApplyTorque(value); } } applyImpulse(forceX, forceY, pointX, pointY, localSpace = false) { if (typeof forceX !== 'number') { throw new Error('`forceX` is not type of Number!'); } if (typeof forceY !== 'number') { throw new Error('`forceY` is not type of Number!'); } if (typeof pointX !== 'number') { throw new Error('`pointX` is not type of Number!'); } if (typeof pointY !== 'number') { throw new Error('`pointY` is not type of Number!'); } if (typeof localSpace !== 'boolean') { throw new Error('`localSpace` is not type of Boolean!'); } const { _body } = this; if (!!_body) { if (localSpace) { const localPoint = _body.GetLocalPoint(new b2Vec2(pointX, pointY)); _body.ApplyImpulse( new b2Vec2(forceX, forceY), new b2Vec2(localPoint.x, localPoint.y) ); } else { _body.ApplyImpulse( new b2Vec2(forceX, forceY), new b2Vec2(pointX, pointY) ); } } } wakeUp() { const { _body } = this; if (!!_body) { _body.SetAwake(true); } } sleep() { const { _body } = this; if (!!_body) { _body.SetAwake(false); } } onAttach() { this.applyPositionTo = this.applyPositionTo; this.applyRotationTo = this.applyRotationTo; this.applyPositionFrom = this.applyPositionFrom; this.applyRotationFrom = this.applyRotationFrom; this._createBody(); } onDetach() { this._destroyBody(); } onPropertySerialize(name, value) { if (name === 'vertices') { if (!value) { return; } return [ ...value ]; } if (name === 'linearVelocity') { if (!value) { return; } return [ value.x, value.y ]; } else { return super.onPropertySerialize(name, value); } } onUpdate(deltaTime) { if (this._rebuild) { this._destroyBody(); this._createBody(); this._rebuild = false; } const { _body } = this; if (!_body) { return; } const { _applyPositionToEntity, _applyRotationToEntity, _applyPositionFromEntity, _applyRotationFromEntity, _coordsScale } = this; if (!!_applyPositionToEntity) { const position = _body.GetPosition(); _applyPositionToEntity.setPosition( position.x * _coordsScale, position.y * _coordsScale ); } else if (!!_applyPositionFromEntity) { const position = _applyPositionFromEntity.position; _body.SetPosition(new b2Vec2( position[0] / _coordsScale, position[1] / _coordsScale )); } if (!!_applyRotationToEntity) { _applyRotationToEntity.setRotation(_body.GetAngle()); } else if (!!_applyRotationFromEntity) { _body.SetAngle(_applyRotationFromEntity.getRotation()); } } _findParentWorld() { let entity = this.entity; while (!!entity) { const world = entity.getComponent('PhysicsWorld'); if (!!world) { return world; } entity = entity.parent; } return null; } _createBody() { const world = this._findParentWorld(); if (!world) { throw new Error('Cannot find PhysicsWorld component in parents chain!'); } const { _bodyType, _shapeType, _bodyDef, _fixtureDef, _coordsScale, _vertices, entity } = this; const { position } = entity; if (_bodyType === BodyType.STATIC) { _bodyDef.type = b2Body.b2_staticBody; } else if (_bodyType === BodyType.DYNAMIC) { _bodyDef.type = b2Body.b2_dynamicBody; } else if (_bodyType === BodyType.KINEMATIC) { _bodyDef.type = b2Body.b2_kinematicBody; } else { console.warn(`Wrong body type: ${_bodyType}`); return; } if (_shapeType === ShapeType.POLYGON) { this._shape = new b2PolygonShape(); const vertices = []; for (let i = 0, c = _vertices.length; i < c; i += 2) { vertices.push(new b2Vec2(_vertices[i], _vertices[i + 1])); } this._shape.SetAsVector(vertices); } else if (_shapeType === ShapeType.CIRCLE) { this._shape = new b2CircleShape(this._radius); } else { console.warn(`Wrong shape type: ${_shapeType}`); return; } const scale = _coordsScale > 0 ? 1 / _coordsScale : 0; _bodyDef.position = new b2Vec2( position[0] * scale, position[1] * scale ); _bodyDef.angle = entity.getRotation(); _fixtureDef.shape = this._shape; const body = this._body = world.world.CreateBody(_bodyDef); if (!body) { throw new Error( `Could not create body for PhysicsBody of entity: ${entity.name}` ); } body.SetUserData(this); const fixture = this._fixture = body.CreateFixture(_fixtureDef); fixture.SetUserData(this); this._world = world; } _destroyBody() { const { _bodyDef, _fixtureDef, _body, _fixture } = this; if (!!_fixture) { _fixtureDef.shape = null; _fixtureDef.density = _fixture.GetDensity(); _fixtureDef.friction = _fixture.GetFriction(); _fixtureDef.restitution = _fixture.GetRestitution(); _fixtureDef.isSensor = _fixture.IsSensor(); } if (!!_body) { _bodyDef.type = _body.GetType(); _bodyDef.linearVelocity = _body.GetLinearVelocity(); _bodyDef.linearDamping = _body.GetLinearDamping(); _bodyDef.angularVelocity = _body.GetAngularVelocity(); _bodyDef.angularDamping = _body.GetAngularDamping(); _bodyDef.fixedRotation = _body.IsFixedRotation(); _bodyDef.bullet = _body.IsBullet(); _body.DestroyFixture(_fixture); _body.GetWorld().DestroyBody(_body); } this._fixture = null; this._body = null; this._world = null; } } </code></pre> </div> <footer class="footer"> Generated by <a href="https://esdoc.org">ESDoc(1.1.0)<img src="./image/esdoc-logo-mini-black.png"></a> </footer> <script src="script/search_index.js"></script> <script src="script/search.js"></script> <script src="script/pretty-print.js"></script> <script src="script/inherited-summary.js"></script> <script src="script/test-summary.js"></script> <script src="script/inner-link.js"></script> <script src="script/patch-for-local.js"></script> </body> </html>