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246 lines
8.1 KiB
C#
246 lines
8.1 KiB
C#
#region License
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//
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// The Open Toolkit Library License
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//
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// Copyright (c) 2006 - 2009 the Open Toolkit library.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do
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// so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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//
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#endregion
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using System;
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namespace OpenTK.Input
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{
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/// <summary>
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/// Describes the current state of a <see cref="GamePad"/> device.
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/// </summary>
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public struct GamePadState : IEquatable<GamePadState>
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{
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const float RangeMultiplier = 1.0f / (short.MaxValue + 1);
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Buttons buttons;
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int packet_number;
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short left_stick_x;
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short left_stick_y;
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short right_stick_x;
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short right_stick_y;
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byte left_trigger;
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byte right_trigger;
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bool is_connected;
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#region Public Members
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/// <summary>
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/// Gets a <see cref="GamePadThumbSticks"/> structure describing the
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/// state of the <c>GamePad</c> thumb sticks.
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/// </summary>
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public GamePadThumbSticks ThumbSticks
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{
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get { return new GamePadThumbSticks(left_stick_x, left_stick_y, right_stick_x, right_stick_y); }
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}
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/// <summary>
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/// Gets a <see cref="GamePadButtons"/> structure describing the
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/// state of the <c>GamePad</c> buttons.
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/// </summary>
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public GamePadButtons Buttons
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{
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get { return new GamePadButtons(buttons); }
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}
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/// <summary>
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/// Gets a <see cref="GamePadDPad"/> structure describing the
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/// state of the <c>GamePad</c> directional pad.
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/// </summary>
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public GamePadDPad DPad
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{
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get { return new GamePadDPad(buttons); }
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}
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/// <summary>
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/// Gets a <see cref="GamePadTriggers"/> structure describing the
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/// state of the <c>GamePad</c> triggers.
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/// </summary>
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public GamePadTriggers Triggers
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{
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get { return new GamePadTriggers(left_trigger, right_trigger); }
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}
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/// <summary>
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/// Gets a value indicating whether this <c>GamePad</c> instance is connected.
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/// </summary>
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/// <value><c>true</c> if this instance is connected; otherwise, <c>false</c>.</value>
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public bool IsConnected
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{
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get { return is_connected; }
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}
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/// <summary>
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/// Gets the packet number for this <c>GamePadState</c> instance.
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/// Use the packet number to determine whether the state of a
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/// <c>GamePad</c> device has changed.
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/// </summary>
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public int PacketNumber
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{
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get { return packet_number; }
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}
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/// <summary>
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/// Returns a <see cref="System.String"/> that represents the current <see cref="OpenTK.Input.GamePadState"/>.
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/// </summary>
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/// <returns>A <see cref="System.String"/> that represents the current <see cref="OpenTK.Input.GamePadState"/>.</returns>
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public override string ToString()
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{
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return String.Format(
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"{{Sticks: {0}; Buttons: {1}; DPad: {2}; IsConnected: {3}}}",
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ThumbSticks, Buttons, DPad, IsConnected);
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}
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/// <summary>
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/// Serves as a hash function for a <see cref="OpenTK.Input.GamePadState"/> object.
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/// </summary>
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/// <returns>A hash code for this instance that is suitable for use in hashing algorithms and data structures such as a
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/// hash table.</returns>
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public override int GetHashCode()
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{
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return
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ThumbSticks.GetHashCode() ^ Buttons.GetHashCode() ^
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DPad.GetHashCode() ^ IsConnected.GetHashCode();
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}
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/// <summary>
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/// Determines whether the specified <see cref="System.Object"/> is equal to the current <see cref="OpenTK.Input.GamePadState"/>.
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/// </summary>
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/// <param name="obj">The <see cref="System.Object"/> to compare with the current <see cref="OpenTK.Input.GamePadState"/>.</param>
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/// <returns><c>true</c> if the specified <see cref="System.Object"/> is equal to the current
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/// <see cref="OpenTK.Input.GamePadState"/>; otherwise, <c>false</c>.</returns>
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public override bool Equals(object obj)
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{
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return
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obj is GamePadState &&
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Equals((GamePadState)obj);
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}
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#endregion
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#region IEquatable<GamePadState> Members
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/// <summary>
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/// Determines whether the specified <see cref="OpenTK.Input.GamePadState"/> is equal to the current <see cref="OpenTK.Input.GamePadState"/>.
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/// </summary>
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/// <param name="other">The <see cref="OpenTK.Input.GamePadState"/> to compare with the current <see cref="OpenTK.Input.GamePadState"/>.</param>
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/// <returns><c>true</c> if the specified <see cref="OpenTK.Input.GamePadState"/> is equal to the current
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/// <see cref="OpenTK.Input.GamePadState"/>; otherwise, <c>false</c>.</returns>
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public bool Equals(GamePadState other)
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{
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return
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ThumbSticks == other.ThumbSticks &&
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Buttons == other.Buttons &&
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DPad == other.DPad &&
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IsConnected == other.IsConnected;
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}
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#endregion
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#region Internal Members
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internal void SetAxis(GamePadAxes axis, short value)
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{
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if ((axis & GamePadAxes.LeftX) != 0)
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{
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left_stick_x = value;
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}
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if ((axis & GamePadAxes.LeftY) != 0)
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{
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left_stick_y = value;
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}
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if ((axis & GamePadAxes.RightX) != 0)
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{
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right_stick_x = value;
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}
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if ((axis & GamePadAxes.RightY) != 0)
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{
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right_stick_y = value;
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}
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if ((axis & GamePadAxes.LeftTrigger) != 0)
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{
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// Adjust from [-32768, 32767] to [0, 255]
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left_trigger = (byte)((value - short.MinValue) >> 8);
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}
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if ((axis & GamePadAxes.RightTrigger) != 0)
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{
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// Adjust from [-32768, 32767] to [0, 255]
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right_trigger = (byte)((value - short.MinValue) >> 8);
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}
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}
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internal void SetButton(Buttons button, bool pressed)
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{
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if (pressed)
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{
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buttons |= button;
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}
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else
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{
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buttons &= ~button;
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}
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}
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internal void SetConnected(bool connected)
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{
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is_connected = connected;
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}
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internal void SetTriggers(byte left, byte right)
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{
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left_trigger = left;
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right_trigger = right;
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}
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internal void SetPacketNumber(int number)
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{
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packet_number = number;
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}
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#endregion
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#region Private Members
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bool IsAxisValid(GamePadAxes axis)
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{
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int index = (int)axis;
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return index >= 0 && index < GamePad.MaxAxisCount;
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}
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bool IsDPadValid(int index)
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{
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return index >= 0 && index < GamePad.MaxDPadCount;
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}
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#endregion
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}
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}
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