XInput.cs

using UnityEngine;
using System.Collections;

public class XInput
{
    public enum DPad
    {
        Left,
        Right,
        Up,
        Down
    }

    public enum Button
    {
        None,
        A,
        B,
        X,
        Y,
        Back,
        Start,
        Home,
        BumperLeft,
        BumperRight,
        StickClickLeft,
        StickClickRight,
        Max
    }

    public int index = 0;

    public Vector2 leftStick;
    public Vector2 rightStick;

    public float triggerLeft;
    public float triggerRight;

    public Vector2 dPad;
    public Vector3 oldDPad;

    private const float DEAD_ZONE = 0.33f;

    public bool GetButtonDown(Button button)
    {
        return Input.GetKeyDown(ButtonToKeyCode(button));
    }

    public bool GetButtonUp(Button button)
    {
        return Input.GetKeyUp(ButtonToKeyCode(button));
    }

    public bool GetButton(Button button)
    {
        return Input.GetKey(ButtonToKeyCode(button));
    }

    public KeyCode GetButtonForJoystick(int button)
    {
        if (index == 0)
        {
            return (KeyCode)((int)KeyCode.Joystick1Button0 + button);
        }
        else if (index == 1)
        {
            return (KeyCode)((int)KeyCode.Joystick2Button0 + button);
        }
        else if (index == 2)
        {
            return (KeyCode)((int)KeyCode.Joystick3Button0 + button);
        }
        else if (index == 3)
        {
            return (KeyCode)((int)KeyCode.Joystick4Button0 + button);
        }
        return KeyCode.None;
    }

    public KeyCode ButtonToKeyCode(Button button)
    {
        if (Application.platform == RuntimePlatform.OSXPlayer || Application.platform == RuntimePlatform.OSXEditor || Application.platform == RuntimePlatform.OSXWebPlayer)
        {
            switch (button)
            {
                case Button.A:
                    return GetButtonForJoystick(16);
                case Button.B:
                    return GetButtonForJoystick(17);
                case Button.X:
                    return GetButtonForJoystick(18);
                case Button.Y:
                    return GetButtonForJoystick(19);
                case Button.BumperLeft:
                    return GetButtonForJoystick(13);
                case Button.BumperRight:
                    return GetButtonForJoystick(14);
                case Button.Back:
                    return GetButtonForJoystick(10);
                case Button.Start:
                    return GetButtonForJoystick(9);
                case Button.StickClickLeft:
                    return GetButtonForJoystick(11);
                case Button.StickClickRight:
                    return GetButtonForJoystick(12);
            }
        }
        else if (Application.platform == RuntimePlatform.WindowsPlayer || Application.platform == RuntimePlatform.WindowsEditor || Application.platform == RuntimePlatform.WindowsWebPlayer)
        {
            switch (button)
            {
                case Button.A:
                    return GetButtonForJoystick(0);
                case Button.B:
                    return GetButtonForJoystick(1);
                case Button.X:
                    return GetButtonForJoystick(2);
                case Button.Y:
                    return GetButtonForJoystick(3);
                case Button.BumperLeft:
                    return GetButtonForJoystick(4);
                case Button.BumperRight:
                    return GetButtonForJoystick(5);
                case Button.Back:
                    return GetButtonForJoystick(6);
                case Button.Start:
                    return GetButtonForJoystick(7);
                case Button.StickClickLeft:
                    return GetButtonForJoystick(8);
                case Button.StickClickRight:
                    return GetButtonForJoystick(9);
            }
        }

        return KeyCode.None;
    }

    public void Update()
    {
        if (Application.platform == RuntimePlatform.OSXPlayer || Application.platform == RuntimePlatform.OSXEditor)
        {
            //Mac OSX
            triggerLeft = GetAxisRaw(5);
            triggerRight = GetAxisRaw(6);

            leftStick = GetAxisVec(1, 2);
            rightStick = GetAxisVec(3, 4);

            oldDPad = dPad;

            dPad.x = (Input.GetKeyDown(GetButtonForJoystick(8))?1.0f:0.0f) + (Input.GetKeyDown(GetButtonForJoystick(7))?-1.0f:0.0f);
            dPad.y = (Input.GetKeyDown(GetButtonForJoystick(6))?1.0f:0.0f) + (Input.GetKeyDown(GetButtonForJoystick(5))?-1.0f:0.0f);
        }
        else if (Application.platform == RuntimePlatform.WindowsPlayer || Application.platform == RuntimePlatform.WindowsEditor)
        {
            //Windows
            float triggers = Input.GetAxis("XPCTriggers" + (index+1));
            if (triggers < -Mathf.Epsilon)
                triggerRight = -triggers;
            else if (triggers > Mathf.Epsilon)
                triggerLeft = triggers;
            else
                triggerLeft = triggerRight = 0.0f;

            leftStick = GetAxisVec(1, 2);
            rightStick = GetAxisVec(4, 5);

            //Debug.LogWarning("player: " + index + " leftStick: " + leftStick + " rightStick: " + rightStick);

            oldDPad = dPad;
            dPad = GetAxisVec(6, 7);
        }
    }

    float GetAxisRaw(int axis)
    {
        return Input.GetAxisRaw("Joy" + (index+1) + "Axis" + axis);
    }

    Vector2 GetAxisVecRaw(int axis1, int axis2)
    {
        return new Vector2(Input.GetAxisRaw("Joy" + (index+1) + "Axis" + axis1), Input.GetAxisRaw("Joy" + (index+1) + "Axis" + axis2));
    }

    Vector2 GetAxisVec(int axis1, int axis2)
    {
        Vector2 vec = GetAxisVecRaw(axis1, axis2);
        if (Mathf.Abs(vec.x) < DEAD_ZONE)
        {
            vec.x = 0.0f;
        }
        if (Mathf.Abs(vec.y) < DEAD_ZONE)
        {
            vec.y = 0.0f;
        }
        return vec;
    }

    public bool GetDPadDown(DPad dPadEnum)
    {
        switch (dPadEnum)
        {
            case DPad.Left:
                return (dPad.x < 0.0f && oldDPad.x == 0.0f);
            case DPad.Right:
                return (dPad.x > 0.0f && oldDPad.x == 0.0f);
            case DPad.Up:
                return (dPad.y > 0.0f && oldDPad.y == 0.0f);
            case DPad.Down:
                return (dPad.y < 0.0f && oldDPad.y == 0.0f);
        }
        return false;
    }
}