philipshen

// Inside onKeyPressed()
case cc.KEY.space:
    const barrelPosition = cannon.barrel.getPosition() // 1
    const angle = cannon.barrel.rotation
    const barrelLength = cannon.barrel.height
    barrelPosition.x += barrelLength * sind(angle)
    barrelPosition.y += barrelLength * cosd(angle)

    const barrelTipWorldSpace = cannon.node.convertToWorldSpaceAR(barrelPosition) // 2
    const bulletPosition = cannon.game.node.convertToNodeSpaceAR(barrelTipWorld) // 3

philipshen

const {ccclass, property} = cc._decorator;

@ccclass
export default class Meteor extends cc.Component {

    timeToLive = 10000
    timeAlive = 0

    update(dt) {
        if (!cc.isValid(this.node)) return

philipshen

@ccclass
export default class Game extends cc.Component {

    @property(cc.Prefab)
    meteor: cc.Prefab = null

    start() {
        this.scheduleCreateMeteor()
    }
    

philipshen

// Collider callbacks
onBeginContact(contact, selfCollider, otherCollider) {
    if (otherCollider.node.name === "bullet") {
        selfCollider.node.destroy()
        otherCollider.node.destroy()
    }
}

philipshen

@property (cc.Prefab)
explosion: cc.Prefab = null

createExplosion(position: cc.Vec2) {
    const explosion = cc.instantiate(this.explosion)
    explosion.setPosition(position)

    this.node.addChild(explosion)
}

philipshen

const {ccclass, property} = cc._decorator;

import Game from './Game'

@ccclass
export default class Meteor extends cc.Component {

    game: Game

    timeToLive = 10000

philipshen

function create(duration: number, type: Types, creationProp: Properties): Config {
  return {
    duration,
    create: {
      type,
      property: creationProp,
    },
    update: {
      type,
    },

philipshen

type Config = {
  duration: number,
  create?: Anim,
  update?: Anim,
  delete?: Anim,
};

philipshen

type Anim = {
  duration?: number,
  delay?: number,
  springDamping?: number,
  initialVelocity?: number,
  type?: $Enum<typeof TypesEnum>,
  property?: $Enum<typeof PropertiesEnum>,
};

philipshen

const TypesEnum = {
  spring: true,
  linear: true,
  easeInEaseOut: true,
  easeIn: true,
  easeOut: true,
  keyboard: true,
};
const Types = keyMirror(TypesEnum);