83 lines
1.8 KiB
JavaScript
83 lines
1.8 KiB
JavaScript
import {compose, TickingPromise} from '@avocado/core';
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import {Vector} from '@avocado/math';
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import {StateProperty, Trait} from '../trait';
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const decorate = compose(
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StateProperty('isMobile'),
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StateProperty('speed'),
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)
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export class Mobile extends decorate(Trait) {
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static defaultState() {
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return {
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isMobile: true,
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speed: 0,
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};
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}
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static type() {
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return 'mobile';
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}
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constructor(entity, params, state) {
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super(entity, params, state);
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this.requestedMovement = [0, 0];
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}
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methods() {
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return {
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moveFor: (duration) => {
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const direction = this.entity.direction;
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let resolve;
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const promise = new TickingPromise(_resolve => resolve = _resolve);
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promise.ticker = (elapsed) => {
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duration -= elapsed;
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if (duration <= 0) {
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return resolve();
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}
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this.entity.requestMovement(Vector.fromDirection(direction));
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}
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return promise;
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},
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applyMovement: (movement) => {
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this.entity.x += movement[0];
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this.entity.y += movement[1];
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},
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requestMovement: (vector) => {
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if (!this.isMobile) {
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return;
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}
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this.requestedMovement = Vector.scale(
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Vector.normalize(vector),
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this.speed
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);
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this.entity.emit('movementRequest', this.requestedMovement);
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},
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}
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}
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tick(elapsed) {
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if (Vector.isZero(this.requestedMovement)) {
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return;
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}
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if (this.entity.is('physical')) {
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this.entity.applyImpulse(this.requestedMovement);
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}
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else {
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const requestedMovement = Vector.scale(
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this.requestedMovement,
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elapsed
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);
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this.entity.applyMovement(requestedMovement);
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}
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this.requestedMovement = [0, 0];
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}
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}
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