79 lines
1.4 KiB
JavaScript
79 lines
1.4 KiB
JavaScript
'use strict';
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class Discharge {
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constructor(fixture, data) {
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this.x = data.x;
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this.y = data.y;
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this.xvel = data.xvel;
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this.yvel = data.yvel;
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this.r = data.r;
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this.lifetime = data.lifetime || 50;
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this.fixture = fixture;
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this.body = this.fixture.body;
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this.world = this.body.world;
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this.id = this.world.room.generateId();
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}
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destroy() {
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this.world.removeDischarge(this);
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}
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contact(body, point) {
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if (body == this.body) return;
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if (body.type == 'ship' && body.player.team != this.body.player.team) {
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body.damage(0.1, point)
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}
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this.destroy();
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}
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packDelta() {
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// TODO: Implement some sort of delta interface for discharges that is
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// derived from the fixture so it's efficient.
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return [this.id, this.x, this.y];
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}
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packFull() {
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// TODO: Create creation interface using fixture then send this as
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// an array.
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return {
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form: 'discharge',
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id: this.id,
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x: this.x,
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y: this.y,
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r: this.r,
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xvel: this.xvel,
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yvel: this.yvel,
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delta: this.packDelta()
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}
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}
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tick() {
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let start = {
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x: this.x,
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y: this.y
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};
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this.x += this.xvel;
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this.y += this.yvel
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let end = {
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x: this.x,
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y: this.y
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};
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let contact = this.world.physics.raycast(start, end);
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if (contact) {
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this.contact(contact.body, contact.point);
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}
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if (this.lifetime-- <= 0)
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this.destroy();
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}
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}
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module.exports = Discharge;
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