289 lines
10 KiB
C++
289 lines
10 KiB
C++
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/****************************************************************************
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Copyright (c) 2007,Radon Labs GmbH
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Copyright (c) 2011-2013,WebJet Business Division,CYOU
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http://www.genesis-3d.com.cn
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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
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#if WIN32
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#include "input/input_stdneb.h"
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#include "input/xinput/xinputgamepad.h"
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#include "framesync/framesynctimer.h"
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namespace XInput
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{
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__ImplementClass(XInput::XInputGamePad, 'XIGP', Input::InputGamePadBase);
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using namespace Math;
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using namespace FrameSync;
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//------------------------------------------------------------------------------
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/**
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*/
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XInputGamePad::XInputGamePad() :
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lastPacketNumber(0xffffffff),
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lastCheckConnectedTime(0)
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{
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// empty
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}
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//------------------------------------------------------------------------------
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/**
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*/
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XInputGamePad::~XInputGamePad()
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{
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// empty
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}
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//------------------------------------------------------------------------------
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/**
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*/
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void
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XInputGamePad::OnAttach(const GPtr<Input::InputServerBase>& inputServer)
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{
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InputGamePadBase::OnAttach(inputServer);
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// start our timer, the timer is used to measure time since the last
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// XInputGetState() for disconnected game pads, this is an expensive
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// operation, thus we're only doing it every half a second or so
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this->lastCheckConnectedTime = FrameSyncTimer::Instance()->GetTicks() - CheckConnectedInterval;
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}
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//------------------------------------------------------------------------------
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/**
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This compares the current state of the game pad against the
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previous state and sets the internal state accordingly.
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FIXME: Calling XInputGetState() on non-connected controllers is very
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expensive, thus if XInputGetState return ERROR_DEVICE_NOT_CONNECTED, only
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call XInputGetState() every 2 seconds to check if a device has actually
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been connected!!!
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*/
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void
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XInputGamePad::OnBeginFrame()
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{
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InputGamePadBase::OnBeginFrame();
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// get current state of the game pad, this looks a bit complicated
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// because disconnected game pads are only checked once in a while
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// (getting state from a non-connected device is fairly expensive)
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Timing::Tick curTime = FrameSyncTimer::Instance()->GetTicks();
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XINPUT_STATE curState = { 0 };
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DWORD result = ERROR_DEVICE_NOT_CONNECTED;
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if (!this->isConnected)
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{
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// if we're not currently connected, only check every little while
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if ((curTime - this->lastCheckConnectedTime) >= CheckConnectedInterval)
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{
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result = XInputGetState(this->playerIndex, &curState);
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this->lastCheckConnectedTime = curTime;
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}
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}
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else
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{
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// if we're currently connected, getting the current state is cheap
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result = XInputGetState(this->playerIndex, &curState);
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this->lastCheckConnectedTime = curTime;
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}
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// check result
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if (ERROR_DEVICE_NOT_CONNECTED == result)
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{
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// game pad is currently not connected, if it just has been
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// disconnected we need to reset the game pad
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if (this->isConnected)
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{
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this->OnReset();
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this->isConnected = false;
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}
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}
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else if (ERROR_SUCCESS == result)
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{
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this->isConnected = true;
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// check if state of controller has actually changed
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if (curState.dwPacketNumber != this->lastPacketNumber)
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{
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this->lastPacketNumber = curState.dwPacketNumber;
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// update button states
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this->UpdateButtonState(curState.Gamepad, XINPUT_GAMEPAD_DPAD_UP, DPadUpButton);
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this->UpdateButtonState(curState.Gamepad, XINPUT_GAMEPAD_DPAD_DOWN, DPadDownButton);
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this->UpdateButtonState(curState.Gamepad, XINPUT_GAMEPAD_DPAD_LEFT, DPadLeftButton);
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this->UpdateButtonState(curState.Gamepad, XINPUT_GAMEPAD_DPAD_RIGHT, DPadRightButton);
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this->UpdateButtonState(curState.Gamepad, XINPUT_GAMEPAD_START, StartButton);
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this->UpdateButtonState(curState.Gamepad, XINPUT_GAMEPAD_BACK, BackButton);
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this->UpdateButtonState(curState.Gamepad, XINPUT_GAMEPAD_LEFT_THUMB, LeftThumbButton);
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this->UpdateButtonState(curState.Gamepad, XINPUT_GAMEPAD_RIGHT_THUMB, RightThumbButton);
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this->UpdateButtonState(curState.Gamepad, XINPUT_GAMEPAD_LEFT_SHOULDER, LeftShoulderButton);
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this->UpdateButtonState(curState.Gamepad, XINPUT_GAMEPAD_RIGHT_SHOULDER, RightShoulderButton);
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this->UpdateButtonState(curState.Gamepad, XINPUT_GAMEPAD_A, AButton);
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this->UpdateButtonState(curState.Gamepad, XINPUT_GAMEPAD_B, BButton);
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this->UpdateButtonState(curState.Gamepad, XINPUT_GAMEPAD_X, XButton);
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this->UpdateButtonState(curState.Gamepad, XINPUT_GAMEPAD_Y, YButton);
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// update axis states
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this->UpdateTriggerAxis(curState.Gamepad, LeftTriggerAxis);
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this->UpdateTriggerAxis(curState.Gamepad, RightTriggerAxis);
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this->UpdateThumbAxis(curState.Gamepad, LeftThumbXAxis);
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this->UpdateThumbAxis(curState.Gamepad, LeftThumbYAxis);
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this->UpdateThumbAxis(curState.Gamepad, RightThumbXAxis);
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this->UpdateThumbAxis(curState.Gamepad, RightThumbYAxis);
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}
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else
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{
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// reset button up state
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IndexT btnIdx;
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for (btnIdx = 0; btnIdx < this->buttonStates.Size(); ++btnIdx)
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{
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this->buttonStates[btnIdx].up = false;
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this->buttonStates[btnIdx].down = false;
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}
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}
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}
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else
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{
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// can't happen?
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n_error("XInputGamePad: can't happen (invalid return value from XInputGetState!)");
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}
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// if the vibrator settings have changed, update accordingly
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if (this->isConnected && this->vibratorsDirty)
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{
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XINPUT_VIBRATION vib;
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vib.wLeftMotorSpeed = (WORD) (this->lowFreqVibrator * 65535.0f);
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vib.wRightMotorSpeed = (WORD) (this->highFreqVibrator * 65535.0f);
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XInputSetState(this->playerIndex, &vib);
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this->vibratorsDirty = false;
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}
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}
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//------------------------------------------------------------------------------
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/**
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Compares the previous and current state of a game pad button
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and updates the parent class' state accordingly.
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*/
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void
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XInputGamePad::UpdateButtonState(const XINPUT_GAMEPAD& curState, WORD xiBtn, Button btn)
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{
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if (0 != (curState.wButtons & xiBtn))
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{
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// has button been down-pressed in this frame?
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if (!this->buttonStates[btn].pressed)
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{
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this->buttonStates[btn].down = true;
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}
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else
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{
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this->buttonStates[btn].down = false;
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}
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this->buttonStates[btn].pressed = true;
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this->buttonStates[btn].up = false;
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}
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else
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{
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// has button been released in this frame?
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if (this->buttonStates[btn].pressed)
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{
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this->buttonStates[btn].up = true;
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}
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else
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{
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this->buttonStates[btn].up = false;
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}
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this->buttonStates[btn].pressed = false;
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this->buttonStates[btn].down = false;
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}
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}
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//------------------------------------------------------------------------------
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/**
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*/
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void
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XInputGamePad::UpdateTriggerAxis(const XINPUT_GAMEPAD& curState, Axis axis)
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{
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n_assert((axis == LeftTriggerAxis) || (axis == RightTriggerAxis));
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BYTE rawValue = 0;
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if (LeftTriggerAxis == axis)
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{
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rawValue = curState.bLeftTrigger;
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}
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else
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{
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rawValue = curState.bRightTrigger;
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}
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this->axisValues[axis] = n_max(0.0f, float(rawValue - XINPUT_GAMEPAD_TRIGGER_THRESHOLD)) / (255.0f - XINPUT_GAMEPAD_TRIGGER_THRESHOLD);
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}
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//------------------------------------------------------------------------------
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/**
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*/
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void
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XInputGamePad::UpdateThumbAxis(const XINPUT_GAMEPAD& curState, Axis axis)
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{
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n_assert((axis == LeftThumbXAxis) || (axis == LeftThumbYAxis) || (axis == RightThumbXAxis) || (axis == RightThumbYAxis));
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SHORT rawValue = 0;
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SHORT deadZone = 0;
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switch (axis)
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{
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case LeftThumbXAxis:
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rawValue = curState.sThumbLX;
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deadZone = XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE;
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break;
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case LeftThumbYAxis:
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rawValue = curState.sThumbLY;
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deadZone = XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE;
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break;
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case RightThumbXAxis:
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rawValue = curState.sThumbRX;
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deadZone = XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE;
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break;
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case RightThumbYAxis:
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rawValue = curState.sThumbRY;
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deadZone = XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE;
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break;
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}
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float val = 0.0f;
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if ((rawValue > deadZone) || (rawValue < -deadZone))
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{
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// outside dead zone, scale from -1.0f to +1.0f
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if (rawValue > 0)
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{
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// in positive range
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val = n_max(0.0f, float(rawValue - deadZone)) / (32767.0f - deadZone);
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}
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else
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{
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// in negative range
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val = n_min(0.0f, float(rawValue + deadZone)) / (32768.0f - deadZone);
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}
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}
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this->axisValues[axis] = val;
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}
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} // namespace XInput
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#endif
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