src/entities/boshy.js


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import { BOSHY } from "../assets.js"
import { Vector } from "../engine/vector.js"
import { Engine } from "../engine.js"
import { BoshyBullet } from "./boshybullet.js"
import { Entity } from "./entity.js"

export class Boshy extends Entity {
    reloadTime = 6
    lastShot = 0
    speed = 5

    constructor() {
        super({
            size: new Vector(30, 30),
            position: new Vector(325, 400),
            sprite: BOSHY.NORMAL,
        })

        Engine.playSound(BOSHY.SOUNDS.INTRO)
    }

    update() {
        let keys = Engine.keys
        let viewport = Engine.screen.viewport

        /* get movement direction */
        let move = new Vector()
        let speed = this.speed
        if (keys.right) move.x += 1
        if (keys.left) move.x -= 1
        if (keys.up) move.y -= 1
        if (keys.down) move.y += 1
        if (keys.shoot) this.shoot()

        /* apply movement */
        move.normalize()
        move.multiply(speed)
        this.position.add(move)

        /* check limits */
        if (this.position.x < 0) this.position.x = 0
        if (this.position.y < 0) this.position.y = 0
        if (this.position.x > viewport.x) this.position.x = viewport.x
        if (this.position.y > viewport.y) this.position.y = viewport.y
    }

    shoot() {
        /* check if it can shoot */
        if (Engine.frame < this.lastShot + this.reloadTime) {
            return
        }

        this.lastShot = Engine.frame /*(reset reload)*/

        let bullet_a_position = this.position.clone()
        let bullet_b_position = this.position.clone()

        bullet_a_position.x = bullet_a_position.x + 5
        bullet_b_position.x = bullet_b_position.x - 5

        new BoshyBullet(bullet_a_position)
        new BoshyBullet(bullet_b_position)
        Engine.playSound(BOSHY.SOUNDS.SHOOT)
    }
}