Snake Game

[belliott554]

I am making a game using the phaser game engine similar to the popular game snake. I am looking for code to that if the right arrow key is pressed once, the snake continues right until another key is pressed or it hits the wall. I am wondering if anybody knows how to do this using the current phaser engine or if it could be added in the future. thanks 

[temporalix]

you can set the body's x and y velocity to equal to variables then change those variables on keypress, eg :

physics needs to be enabled on group/sprite in your create function.

 

var xVelocity=0;

var yVelocity=0;

 

function update()

{

snake.body.velocity.x=xVelocity;

snake.body.velocity.y=yVelocity;

 

 if (game.input.keyboard.isDown(Phaser.Keyboard.LEFT)) {       // do the same for other directions changing xVelocity and yVelocity to correct values

//set both velocities of body so sprite travels only in single direction

                    xVelocity=-200;
                    yVelocity=0;
                }

//collision handler to change direction on collide with wall

 game.physics.arcade.collide(snake, wall, collisionHandler, null, this);

 

}

 

 function collisionHandler(obj1,obj2)

{

if(xVelocity==0)

  {

  xVelocity=200;

  yVelocity=0;

  }

else

{

  xVelocity=0;

  yVelocity=200;

}

}

 

this code should get you started.

 

there will be a few bugs and problems with movement but that can be fixed by changing or adding in more checks on the snakes velocity or position

[belliott554]

Thanks a lot. The code works just as you said it would.