bb
157c6af18e
Avoid cases of filenames Update years in terms and other legal(ish) documents Don't update years in license headers, since change is not meaningful Will add linter rule in seperate commit Happy recompiling everyone! Original Patch By: Nescio Comment By: Gallaecio Differential Revision: D2620 This was SVN commit r27786.
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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