wraitii
66fbc23f2c
CConfigDB is no longer a singleton, and its members are no longer static. This makes it possible to have several instances of it, useful for testing of if we ever want to have different config profiles. Also updates hooks to delete themselves on destruction, to fit a more natural RAII pattern. Long-lived objects must take care to destroy hooks before ConfigDB is reset. Differential Revision: https://code.wildfiregames.com/D3866 This was SVN commit r25326.
101 lines
2.5 KiB
C++
101 lines
2.5 KiB
C++
/* Copyright (C) 2021 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.h"
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#include "Joystick.h"
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#include "lib/external_libraries/libsdl.h"
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#include "ps/CLogger.h"
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#include "ps/ConfigDB.h"
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CJoystick g_Joystick;
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CJoystick::CJoystick() :
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m_Joystick(NULL), m_Deadzone(0)
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{
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}
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void CJoystick::Initialise()
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{
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bool joystickEnable = false;
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if (!CConfigDB::IsInitialised())
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return;
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CFG_GET_VAL("joystick.enable", joystickEnable);
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if (!joystickEnable)
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return;
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CFG_GET_VAL("joystick.deadzone", m_Deadzone);
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if (SDL_InitSubSystem(SDL_INIT_JOYSTICK) < 0)
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{
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LOGERROR("CJoystick::Initialise failed to initialise joysticks (\"%s\")", SDL_GetError());
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return;
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}
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int numJoysticks = SDL_NumJoysticks();
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LOGMESSAGE("Found %d joystick(s)", numJoysticks);
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for (int i = 0; i < numJoysticks; ++i)
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{
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SDL_Joystick* stick = SDL_JoystickOpen(i);
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if (!stick)
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{
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LOGERROR("CJoystick::Initialise failed to open joystick %d (\"%s\")", i, SDL_GetError());
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continue;
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}
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const char* name = SDL_JoystickName(stick);
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LOGMESSAGE("Joystick %d: %s", i, name);
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SDL_JoystickClose(stick);
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}
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if (numJoysticks)
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{
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SDL_JoystickEventState(SDL_ENABLE);
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// Always pick the first joystick, and assume that's the right one
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m_Joystick = SDL_JoystickOpen(0);
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if (!m_Joystick)
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LOGERROR("CJoystick::Initialise failed to open joystick (\"%s\")", SDL_GetError());
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}
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}
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bool CJoystick::IsEnabled()
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{
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return (m_Joystick != NULL);
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}
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float CJoystick::GetAxisValue(int axis)
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{
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if (!m_Joystick || axis < 0 || axis >= SDL_JoystickNumAxes(m_Joystick))
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return 0.f;
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int16_t val = SDL_JoystickGetAxis(m_Joystick, axis);
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// Normalize values into the range [-1, +1] excluding the deadzone around 0
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float norm;
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if (val > m_Deadzone)
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norm = (val - m_Deadzone) / (float)(32767 - m_Deadzone);
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else if (val < -m_Deadzone)
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norm = (val + m_Deadzone) / (float)(32767 - m_Deadzone);
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else
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norm = 0.f;
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return norm;
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}
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