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Question by MarigoldFleur · May 11, 2012 at 04:29 PM · movementinputvelocityinput.getkeykey press

Detecting left and right being pressed at the same time.

I'm working on a 2D platformer and one of the t$$anonymous$$ngs I want to implement is zeroing out the player's X velocity if both left and right are being pressed at the same time. Almost everyt$$anonymous$$ng I've tried in code hasn't worked at all unless both keys are pressed down starting at the same time. What I want to do is, if the player is holding right and then starts pressing left at the same time, they come to a stop.

     if (Input.GetKey("left")) {
         transform.localScale = Vector2(-1,1);
         physics.velocity.x += Input.GetAxis("Horizontal") * physics.maxVelocity.x * 2;
     } else if (Input.GetKey("right")) {
         transform.localScale = Vector2(1,1);
         physics.velocity.x += Input.GetAxis("Horizontal") * physics.maxVelocity.x * 2;
     } else {
         physics.velocity.x = 0;
     }

Also, since it'll probably come up, I'm using GetKey because GetAxis takes some time to come to a stop when I want the character to be able to stop on a dime.

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Answer by AlucardJay · May 11, 2012 at 04:40 PM

untested , but try checking for both buttons first , then follow down to each individual button :

     if (Input.GetKey("left") && Input.GetKey("right")) {
         physics.velocity.x = 0;
     } else if (Input.GetKey("left")) {
         transform.localScale = Vector2(-1,1);
         physics.velocity.x += Input.GetAxis("Horizontal") * physics.maxVelocity.x * 2;
     } else if (Input.GetKey("right")) {
         transform.localScale = Vector2(1,1);
         physics.velocity.x += Input.GetAxis("Horizontal") * physics.maxVelocity.x * 2;
     }
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avatar image MarigoldFleur · May 11, 2012 at 04:44 PM 0
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I... feel especially dumb right now because that's the one thing I didn't try. I think I kept leaving the check in its own conditional statement rather than part of the whole. This works perfectly though, thanks!

avatar image AlucardJay · May 11, 2012 at 04:45 PM 0
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no worries =]

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