Running and jumping right works but running and jumping left doesn't... Why?! (Possible Phaser bug)

[OakTreePeter]

Hey guys

I'm making a platformer and I've managed to get my character running and jumping at the same time... to one side only - the right!

I have NO ideia why running and jumping to the left is proving impossible but I'm hoping you can help me out.

runKey = game.input.keyboard.addKey(Phaser.Keyboard.SPACEBAR); // The running key, in the create method

// Fast forward to my update method (...)

// Horizontal movement

		player.body.velocity.x = 0;	// Resets our character's horizontal movement.

		if (cursors.left.isDown)	// If the 'left' key on our keyboard is pressed ...
		{
			player.scale.x = -1;	// ... we horizontally flip our character to face the left ...

			player.body.velocity.x = -200;	// ... we move him to the left ...

			player.animations.play('walk');	// ... play the 'walk' animation ...

			player_walk.play('', 0, 1, false, false);	// ... and finally play the 'player_walk' sound effect.

			if (runKey.isDown)					// If the 'run' key on our keyboard is being pressed while we are walking to the left...
			{
				player.body.velocity.x = -350;	// ... we allow our character run to the left.
			}
		}
		else if (cursors.right.isDown)	// If the 'right' key on our keyboard is pressed ...
		{
			player.scale.x = 1;			// ... we horizontally flip our character to face the right ...

			player.body.velocity.x = 200;	// ... we move our character to the right ...

			player.animations.play('walk');	// ... play the 'walk' animation ...

			player_walk.play('', 0, 1, false, false);	// ... and finally play the 'player_walk' sound effect.

			if (runKey.isDown)					// If the 'run' key on our keyboard is being pressed while we are walking to the right...
			{
				player.body.velocity.x = 350;	// ... we allow our character run to the right.
			}
		}
		else	// If no key on our keyboard is pressed ...
		{
			player.animations.play('idle');	// ... play the 'idle' animation ...
		}

		// Vertical movement

		if (cursors.up.isDown && (player.body.blocked.down || player.body.touching.down))	// If the 'up' key on our keyboard is pressed and our character is touching a surface ...
		{
			if (runKey.isDown && player.body.velocity.x < 0)
			{
				player.body.velocity.x = -350;

				player.body.velocity.y = -700;

				player_jump.play('', 0, 1, false, false);

				jumpCounter = 1;
			}
			else if (runKey.isDown && player.body.velocity.x > 0)
			{
				player.body.velocity.x = 350;

				player.body.velocity.y = -700;

				player_jump.play('', 0, 1, false, false);

				jumpCounter = 1;
			}

			player.body.velocity.y = -700;

			player_jump.play('', 0, 1, false, false);

			jumpCounter = 1;
		}
		else if (player.body.velocity.y < 0)
		{
			if (runKey.isDown && player.body.velocity.x < 0)
			{
				player.body.velocity.x = -350;

				player.animations.play('jump');

				player_walk.pause();
			}
			else if (runKey.isDown && player.body.velocity.x > 0)
			{
				player.body.velocity.x = 350;

				player.animations.play('jump');

				player_walk.pause();
			}

			player.animations.play('jump');

			player_walk.pause();
		}
		else if (player.body.velocity.y >= 0 && !(player.body.blocked.down || player.body.touching.down))
		{
			if (runKey.isDown && player.body.velocity.x < 0)
			{
				player.body.velocity.x = -350;

				player.animations.play('fall');

				player_walk.pause();
			}
			else if (runKey.isDown && player.body.velocity.x > 0)
			{
				player.body.velocity.x = 350;

				player.animations.play('fall');

				player_walk.pause();
			}

			player.animations.play('fall');

			player_walk.pause();
		}
		else
		{
			jumpCounter = 0;
		}

I really don't understand what's wrong

Thanks in advance!

[OakTreePeter]

up

[OakTreePeter]

Solved.

SPACEBAR doesn't seem to work while being pressed at the same time as the left key.

Used SHIFT and the above code worked perfectly normal. I knew the problem wasn't the code

 

[samid737]

I was halfway trough your code, good that you spotted your problem. Here is a reproduction of the case, if it might be a bug, do you have an idea @samme , maybe @rich knows why this is happening? (shift key is commented below spacebar) :

UPDATE:  Problem was keyboard ghosting.

Edited April 26, 2017 by samid737
ghosting

[samme]

https://github.com/photonstorm/phaser/issues/1882

[RalphWiggum]

@samid737 

your code works fine for me 

I have this keyboard 

https://www.amazon.com/Razer-RZ03-00070100-R2M1-Tarantula-Gaming-Keyboard/dp/B000I20IHA