Can't get bullets to follow sprite rotation and shoot in the direction of the sprite

[callidus]

I want the bullets to fire in the direction the ship is facing such as in this example:

https://phaser.io/examples/v2/arcade-physics/asteroids-movement

 

I have followed the same code structure but my bullets don't fire in the direction I'm facing. 

Code:

// Initialize the Phaser Game object and set default game window size

const game = new Phaser.Game(325, 600, Phaser.CANVAS, '', {

  preload: preload,

  create: create,

  update: update })

 

function preload () {

  //player assets 

  game.load.spritesheet('player', 'assets/player_spaceship/tempShipSpsritesheet.png',80,60,2);

  game.load.image("bullet", 'assets/bullet.png');

}

 

//bullet variables

var bullets;

var bulletTime = 0;

var ebulletTime = 0;

 

function create () {

 

    //Player Variables ----------------------------------

    MAX_VELOCITY = 200;                 // pixels/second

    DRAG = 100;                         // pixels/second                

 

    game.physics.startSystem(Phaser.Physics.ARCADE);

 

    playerbullets = game.add.group();

    playerbullets.enableBody = true;

    playerbullets.physicsBodyType = Phaser.Physics.ARCADE;

    

    playerbullets.createMultiple(10000, 'bullet');

    playerbullets.setAll('anchor.x', 0.5);

    playerbullets.setAll('anchor.y', 0.5);

    playerbullets.setAll('outOfBoundsKill', true);

    playerbullets.setAll('checkWorldBounds', true);

 

    player = game.add.sprite(game.width/2,game.height,'player',0);

    game.physics.enable(player, Phaser.Physics.ARCADE);

    player.body.maxVelocity.set(MAX_VELOCITY)

    player.body.drag.set(DRAG)

    player.anchor.set(0.5);

 

    player.body.collideWorldBounds = true;

 

    //Environment --------------------------------

 

    game.stage.backgroundColor = "#4488AA"

 

    //Controls -----------------------------------

    cursors = game.input.keyboard.createCursorKeys();

    game.input.keyboard.addKeyCapture([ Phaser.Keyboard.SPACEBAR ]);

 

}  

 

function update () {

  //Centers screen

  game.scale.pageAlignHorizontally = true;

  game.scale.pageAlignVertically = true;

  game.scale.refresh();

 

  if (cursors.up.isDown){

      game.physics.arcade.accelerationFromRotation(player.rotation, 200, player.body.acceleration);

      //player.animations.play('thrusters', 30, true);

  }

 

  else{

    player.body.acceleration.set(0);

  }

 

  if(cursors.left.isDown){

    player.body.angularVelocity = -300;

  }

  

  else if(cursors.right.isDown){

    player.body.angularVelocity = 300;

  }

  else{

    player.body.angularVelocity = 0;

  }

 

  if(game.input.keyboard.isDown(Phaser.Keyboard.SPACEBAR)){

    PlayerBulletFired()

  }

}

 

function PlayerBulletFired () {

    if (game.time.now > bulletTime)//adds a delay to the bullet time

    {

        bullet = playerbullets.getFirstExists(false);

 

        if (bullet)

        {

          bullet.scale.setTo(0.2,0.2);

          bullet.reset(player.body.x, player.body.y);

          bullet.rotation = player.rotation;

          game.physics.arcade.velocityFromRotation(player.rotation, 400, bullet.body.velocity);

          bullet.body.velocity.y = -400;

          bulletTime = game.time.now + 50;

        }

    }

}

 

 

[supertommy]

@callidus

using velocityFromRotation looks right but what is the line below it for?

// this looks right
game.physics.arcade.velocityFromRotation(player.rotation, 400, bullet.body.velocity);

// what is this for?
bullet.body.velocity.y = -400;

I don't think you need that second line. I have an isolated demonstration of the concept here if that might help: https://blog.ourcade.co/posts/2020/fire-bullets-from-facing-direction-phaser-3/

Edited March 22, 2020 by supertommy
update link

[callidus]

Thank you this helped solve my issue