72 lines
1.6 KiB
JavaScript
72 lines
1.6 KiB
JavaScript
import {Proton, TextNode, TextNodeRenderer} from '@avocado/graphics';
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export class DamageEmitter {
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constructor() {
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const proton = new Proton();
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const emitter = new Proton.Emitter();
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proton.addEmitter(emitter);
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this.emitter = emitter;
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this.proton = proton;
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}
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addRenderer(renderer) {
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this.renderer = renderer;
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this.proton.addRender(this.renderer);
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}
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emit(position, amount) {
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// BUGS
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const pz = new Proton.PointZone();
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pz.x = position[0];
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pz.y = -position[1];
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const initializers = [
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new Proton.Body(new DamageTextNode(Math.abs(amount))),
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new Proton.Position(pz),
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new Proton.Mass(1),
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new Proton.Life(2),
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new Proton.Velocity(
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new Proton.Span(80, 120),
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new Proton.Vector3D(0, 5, 0),
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27.5
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),
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];
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// Heh, bugs.
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const rot = new Proton.Rotate(0, 0, 0);
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rot.a = new Proton.Span(-.005, .005);
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const behaviors = [
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new Proton.Alpha(1, .5),
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new Proton.Color(amount < 0 ? 0x00ff00 : 0xff0000),
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new Proton.Scale(.8, 1.2),
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new Proton.Force(0, -1, 0),
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rot,
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];
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this.emitter.createParticle(initializers, behaviors);
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}
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tick(elapsed) {
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this.proton.tick(elapsed);
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}
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}
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export class DamageTextNode extends TextNode {
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constructor(damage) {
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super(damage);
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if (damage > 999) {
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this.span.style.fontSize = '2em';
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}
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else if (damage > 99) {
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this.span.style.fontSize = '1.5em';
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}
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else if (damage > 9) {
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this.span.style.fontSize = '1.2em';
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}
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else {
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this.span.style.fontSize = '1em';
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}
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}
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}
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