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  Gamepad Deadzone  (Read 1234 times)
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Offline novasharp

Junior Devvie


Medals: 1
Projects: 1


Gamemaker


« Posted 2012-11-23 14:27:37 »

Hi,

I am using a gamepad to control the movement and direction of my sprite.
My problem is that when I let go of the analog stick, my character turns to a random angle.
This is how I am determining the angle of my sprite:
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r = Math.PI / 2 + Math.atan2(gamepad.getYLeft(), gamepad.getXLeft());


Thanks,
novasharp

novasharp
Offline Cero
« Reply #1 - Posted 2012-11-23 15:11:54 »

Hi,

I am using a gamepad to control the movement and direction of my sprite.
My problem is that when I let go of the analog stick, my character turns to a random angle.
This is how I am determining the angle of my sprite:
1  
r = Math.PI / 2 + Math.atan2(gamepad.getYLeft(), gamepad.getXLeft());


Thanks,
novasharp

So what library are you using for the gamepad ? they have usually functionality for this.
Although I can say, it often happens due to overused controllers... my ps2 controller will do the same in every game, I have to fiddle around

Offline Riven
Administrator

« JGO Overlord »


Medals: 1243
Projects: 4
Exp: 16 years


Hand over your head.


« Reply #2 - Posted 2012-11-23 15:45:57 »

Why rely on hardware when you can fix it with code?
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final float deadZone = ...;

float dx = gamepad.getYLeft();
float dy = gamepad.getXLeft();
if(dx*dx+dy*dy > deadZone*deadZone) { // sqrt(dx^2 + dy^2) > deadZone
   r = Math.PI / 2 + Math.atan2(dy, dx);
}

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Offline novasharp

Junior Devvie


Medals: 1
Projects: 1


Gamemaker


« Reply #3 - Posted 2012-11-23 16:30:54 »

I am using JInput.

the Gamepad class that I am using is just a quick wrapper around it to find the first gamepad and get the values from it.

novasharp
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