671 lines
19 KiB
C++
671 lines
19 KiB
C++
/*
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**
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**
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**---------------------------------------------------------------------------
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** Copyright 2005-2016 Randy Heit
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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// HEADER FILES ------------------------------------------------------------
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#include <math.h>
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#include "c_dispatch.h"
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#include "vectors.h"
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#include "m_joy.h"
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#include "configfile.h"
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#include "i_interface.h"
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#include "d_eventbase.h"
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#include "cmdlib.h"
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#include "printf.h"
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// MACROS ------------------------------------------------------------------
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// TYPES -------------------------------------------------------------------
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// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
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// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
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// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
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// EXTERNAL DATA DECLARATIONS ----------------------------------------------
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EXTERN_CVAR(Bool, joy_ps2raw)
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EXTERN_CVAR(Bool, joy_dinput)
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EXTERN_CVAR(Bool, joy_xinput)
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extern const float JOYDEADZONE_DEFAULT = 0.1; // reduced from 0.25
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extern const float JOYSENSITIVITY_DEFAULT = 1.0;
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extern const float JOYTHRESH_DEFAULT = 0.05;
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extern const float JOYTHRESH_TRIGGER = 0.05;
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extern const float JOYTHRESH_STICK_X = 0.65;
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extern const float JOYTHRESH_STICK_Y = 0.35;
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extern const CubicBezier JOYCURVE[NUM_JOYCURVE] = {
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{{0.3, 0.0, 0.7, 0.4}}, // DEFAULT -> QUADRATIC
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{{0.0, 0.0, 1.0, 1.0}}, // LINEAR
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{{0.3, 0.0, 0.7, 0.4}}, // QUADRATIC
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{{0.5, 0.0, 0.7, 0.2}}, // CUBIC
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};
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// PUBLIC DATA DEFINITIONS -------------------------------------------------
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CUSTOM_CVARD(Bool, use_joystick, true, CVAR_ARCHIVE|CVAR_GLOBALCONFIG|CVAR_NOINITCALL, "enables input from the joystick if it is present")
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{
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#ifdef _WIN32
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joy_ps2raw->Callback();
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joy_dinput->Callback();
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joy_xinput->Callback();
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#endif
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}
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// PRIVATE DATA DEFINITIONS ------------------------------------------------
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// Bits 0 is X+, 1 is X-, 2 is Y+, and 3 is Y-.
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static uint8_t JoyAngleButtons[8] = { 1, 1+4, 4, 2+4, 2, 2+8, 8, 1+8 };
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// CODE --------------------------------------------------------------------
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//==========================================================================
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//
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// IJoystickConfig - Virtual Destructor
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//
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//==========================================================================
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IJoystickConfig::~IJoystickConfig()
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{
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}
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//==========================================================================
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//
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// M_SetJoystickConfigSection
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//
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// Sets up the config for reading or writing this controller's axis config.
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//
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//==========================================================================
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static bool M_SetJoystickConfigSection(IJoystickConfig *joy, bool create, FConfigFile* GameConfig)
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{
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FString id = "Joy:";
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id += joy->GetIdentifier();
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if (!GameConfig) return false;
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return GameConfig->SetSection(id.GetChars(), create);
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}
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//==========================================================================
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//
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// M_LoadJoystickConfig
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//
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//==========================================================================
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bool M_LoadJoystickConfig(IJoystickConfig *joy)
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{
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FConfigFile* GameConfig = sysCallbacks.GetConfig ? sysCallbacks.GetConfig() : nullptr;
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char key[32];
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const char *value;
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int axislen;
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int numaxes;
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joy->SetDefaultConfig();
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if (!M_SetJoystickConfigSection(joy, false, GameConfig))
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{
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return false;
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}
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assert(GameConfig);
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value = GameConfig->GetValueForKey("Enabled");
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if (value)
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{
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joy->SetEnabled((bool)atoi(value));
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}
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if(joy->AllowsEnabledInBackground())
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{
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value = GameConfig->GetValueForKey("EnabledInBackground");
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if (value)
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{
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joy->SetEnabledInBackground((bool)atoi(value));
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}
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}
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value = GameConfig->GetValueForKey("Sensitivity");
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if (value)
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{
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joy->SetSensitivity((float)atof(value));
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}
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numaxes = joy->GetNumAxes();
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for (int i = 0; i < numaxes; ++i)
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{
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axislen = mysnprintf(key, countof(key), "Axis%u", i);
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mysnprintf(key + axislen, countof(key) - axislen, "deadzone");
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value = GameConfig->GetValueForKey(key);
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if (value)
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{
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joy->SetAxisDeadZone(i, (float)atof(value));
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}
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mysnprintf(key + axislen, countof(key) - axislen, "scale");
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value = GameConfig->GetValueForKey(key);
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if (value)
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{
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joy->SetAxisScale(i, (float)atof(value));
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}
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mysnprintf(key + axislen, countof(key) - axislen, "threshold");
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value = GameConfig->GetValueForKey(key);
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if (value)
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{
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joy->SetAxisDigitalThreshold(i, (float)atof(value));
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}
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mysnprintf(key + axislen, countof(key) - axislen, "curve");
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value = GameConfig->GetValueForKey(key);
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if (value)
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{
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joy->SetAxisResponseCurve(i, (EJoyCurve)clamp(atoi(value), (int)JOYCURVE_CUSTOM, (int)NUM_JOYCURVE-1));
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}
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mysnprintf(key + axislen, countof(key) - axislen, "curve-x1");
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value = GameConfig->GetValueForKey(key);
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if (value)
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{
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joy->SetAxisResponseCurvePoint(i, 0, (float)atof(value));
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}
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mysnprintf(key + axislen, countof(key) - axislen, "curve-y1");
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value = GameConfig->GetValueForKey(key);
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if (value)
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{
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joy->SetAxisResponseCurvePoint(i, 1, (float)atof(value));
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}
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mysnprintf(key + axislen, countof(key) - axislen, "curve-x2");
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value = GameConfig->GetValueForKey(key);
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if (value)
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{
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joy->SetAxisResponseCurvePoint(i, 2, (float)atof(value));
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}
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mysnprintf(key + axislen, countof(key) - axislen, "curve-y2");
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value = GameConfig->GetValueForKey(key);
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if (value)
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{
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joy->SetAxisResponseCurvePoint(i, 3, (float)atof(value));
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}
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mysnprintf(key + axislen, countof(key) - axislen, "map");
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value = GameConfig->GetValueForKey(key);
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if (value)
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{
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EJoyAxis gameaxis = (EJoyAxis)atoi(value);
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if (gameaxis < JOYAXIS_None || gameaxis >= NUM_JOYAXIS)
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{
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gameaxis = JOYAXIS_None;
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}
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joy->SetAxisMap(i, gameaxis);
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}
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}
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return true;
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}
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//==========================================================================
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//
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// M_SaveJoystickConfig
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//
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// Only saves settings that are not at their defaults.
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//
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//==========================================================================
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void M_SaveJoystickConfig(IJoystickConfig *joy)
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{
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FConfigFile* GameConfig = sysCallbacks.GetConfig ? sysCallbacks.GetConfig() : nullptr;
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char key[32], value[32];
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int axislen, numaxes;
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if (GameConfig != NULL && M_SetJoystickConfigSection(joy, true, GameConfig))
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{
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GameConfig->ClearCurrentSection();
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if (!joy->GetEnabled())
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{
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GameConfig->SetValueForKey("Enabled", "0");
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}
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if (!joy->AllowsEnabledInBackground() && joy->GetEnabledInBackground())
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{
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GameConfig->SetValueForKey("EnabledInBackground", "1");
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}
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if (!joy->IsSensitivityDefault())
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{
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mysnprintf(value, countof(value), "%g", joy->GetSensitivity());
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GameConfig->SetValueForKey("Sensitivity", value);
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}
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numaxes = joy->GetNumAxes();
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for (int i = 0; i < numaxes; ++i)
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{
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axislen = mysnprintf(key, countof(key), "Axis%u", i);
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if (!joy->IsAxisDeadZoneDefault(i))
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{
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mysnprintf(key + axislen, countof(key) - axislen, "deadzone");
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mysnprintf(value, countof(value), "%g", joy->GetAxisDeadZone(i));
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GameConfig->SetValueForKey(key, value);
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}
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if (!joy->IsAxisScaleDefault(i))
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{
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mysnprintf(key + axislen, countof(key) - axislen, "scale");
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mysnprintf(value, countof(value), "%g", joy->GetAxisScale(i));
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GameConfig->SetValueForKey(key, value);
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}
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if (!joy->IsAxisDigitalThresholdDefault(i))
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{
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mysnprintf(key + axislen, countof(key) - axislen, "threshold");
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mysnprintf(value, countof(value), "%g", joy->GetAxisDigitalThreshold(i));
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GameConfig->SetValueForKey(key, value);
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}
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if (!joy->IsAxisResponseCurveDefault(i))
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{
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mysnprintf(key + axislen, countof(key) - axislen, "curve");
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mysnprintf(value, countof(value), "%d", joy->GetAxisResponseCurve(i));
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GameConfig->SetValueForKey(key, value);
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}
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if (joy->GetAxisResponseCurve(i) == JOYCURVE_CUSTOM)
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{
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mysnprintf(key + axislen, countof(key) - axislen, "curve-x1");
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mysnprintf(value, countof(value), "%g", joy->GetAxisResponseCurvePoint(i, 0));
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GameConfig->SetValueForKey(key, value);
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mysnprintf(key + axislen, countof(key) - axislen, "curve-y1");
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mysnprintf(value, countof(value), "%g", joy->GetAxisResponseCurvePoint(i, 1));
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GameConfig->SetValueForKey(key, value);
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mysnprintf(key + axislen, countof(key) - axislen, "curve-x2");
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mysnprintf(value, countof(value), "%g", joy->GetAxisResponseCurvePoint(i, 2));
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GameConfig->SetValueForKey(key, value);
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mysnprintf(key + axislen, countof(key) - axislen, "curve-y2");
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mysnprintf(value, countof(value), "%g", joy->GetAxisResponseCurvePoint(i, 3));
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GameConfig->SetValueForKey(key, value);
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}
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if (!joy->IsAxisMapDefault(i))
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{
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mysnprintf(key + axislen, countof(key) - axislen, "map");
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mysnprintf(value, countof(value), "%d", joy->GetAxisMap(i));
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GameConfig->SetValueForKey(key, value);
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}
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}
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// If the joystick is entirely at its defaults, delete this section
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// so that we don't write out a lone section header.
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if (GameConfig->SectionIsEmpty())
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{
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GameConfig->DeleteCurrentSection();
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}
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}
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}
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CCMD (gamepad)
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{
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int COMMAND = 1, IDENTIFIER = 2, VALUE = 3;
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int argc = argv.argc()-1;
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TArray<IJoystickConfig *> sticks;
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I_GetJoysticks(sticks);
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auto usage = []()
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{
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Printf(
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"usage:"
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"\n\tgamepad list"
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"\n\tgamepad reset pad"
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"\n\tgamepad enabled pad [0|1]"
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"\n\tgamepad background pad [0|1]"
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"\n\tgamepad sensitivity pad [float]"
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"\n\tgamepad deadzone pad.axis [float]"
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"\n\tgamepad scale pad.axis [float]"
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"\n\tgamepad threshold pad.axis [float]"
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"\n\tgamepad curve pad.axis [-1|0|1|2|3]"
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"\n\tgamepad curve-x1 pad.axis [float]"
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"\n\tgamepad curve-y1 pad.axis [float]"
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"\n\tgamepad curve-x2 pad.axis [float]"
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"\n\tgamepad curve-y2 pad.axis [float]"
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"\n\tgamepad map pad.axis [-1|0|1|2|3|4]"
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"\n"
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);
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};
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if (argc < COMMAND)
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{
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return usage();
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};
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FName command = argv[COMMAND];
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if (argc < IDENTIFIER)
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{
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if (command == "list")
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{
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for (int i = 0; i < sticks.SSize(); i++)
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{
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Printf("%d: '%s'\n", i, sticks[i]->GetName().GetChars());
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for (int j = 0; j < sticks[i]->GetNumAxes(); j++)
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{
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Printf(" %d.%d: '%s'\n", i, j, sticks[i]->GetAxisName(j));
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}
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}
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return;
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}
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return usage();
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}
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const char * id = argv[IDENTIFIER];
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const char * hasAxis = strchr(id, '.');
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int pad, axis;
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try {
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pad = (int)std::stod(id);
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if (pad < 0 || pad >= sticks.SSize())
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{
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return (void) Printf("Pad # out of range\n");
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}
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} catch (...) {
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return (void) Printf("Failed to parse pad #\n");
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}
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if (hasAxis)
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{
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try {
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axis = (int)std::stod(hasAxis+1);
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if (axis < 0 || axis >= sticks[pad]->GetNumAxes())
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{
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return (void) Printf("Axis # out of range\n");
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}
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} catch (...) {
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return (void) Printf("Failed to parse axis #\n");
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}
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}
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float value = 0;
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bool set = argc >= VALUE;
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if (set)
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{
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try {
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value = std::stod(argv[VALUE]);
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} catch (...) {
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return (void) Printf("Failed to parse args\n");
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}
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}
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if (command == "reset")
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{
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if (set) return usage();
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sticks[pad]->SetDefaultConfig();
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sticks[pad]->SetEnabled(true);
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sticks[pad]->SetEnabledInBackground(sticks[pad]->AllowsEnabledInBackground());
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sticks[pad]->SetSensitivity(1);
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return;
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}
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if (command == "enabled")
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{
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if (set) sticks[pad]->SetEnabled((int)value);
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return (void) Printf("%d\n", sticks[pad]->GetEnabled());
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}
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if (command == "background")
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{
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if (set) sticks[pad]->SetEnabledInBackground((int)value);
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return (void) Printf("%d\n", sticks[pad]->GetEnabledInBackground());
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}
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if (command == "sensitivity")
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{
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if (set) sticks[pad]->SetSensitivity(value);
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return (void) Printf("%g\n", sticks[pad]->GetSensitivity());
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}
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if (command == "deadzone")
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{
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if (set) sticks[pad]->SetAxisDeadZone(axis, value);
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return (void) Printf("%g\n", sticks[pad]->GetAxisDeadZone(axis));
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}
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if (command == "scale")
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{
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if (set) sticks[pad]->SetAxisScale(axis, value);
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return (void) Printf("%g\n", sticks[pad]->GetAxisScale(axis));
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}
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if (command == "threshold")
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{
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if (set) sticks[pad]->SetAxisDigitalThreshold(axis, value);
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return (void) Printf("%g\n", sticks[pad]->GetAxisDigitalThreshold(axis));
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}
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if (command == "curve")
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{
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if (set) sticks[pad]->SetAxisResponseCurve(axis, (EJoyCurve)value);
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return (void) Printf("%d\n", sticks[pad]->GetAxisResponseCurve(axis));
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}
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if (command == "curve-x1")
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{
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if (set) sticks[pad]->SetAxisResponseCurvePoint(axis, 0, value);
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return (void) Printf("%g\n", sticks[pad]->GetAxisResponseCurvePoint(axis, 0));
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}
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if (command == "curve-y1")
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{
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if (set) sticks[pad]->SetAxisResponseCurvePoint(axis, 1, value);
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return (void) Printf("%g\n", sticks[pad]->GetAxisResponseCurvePoint(axis, 1));
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}
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if (command == "curve-x2")
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{
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if (set) sticks[pad]->SetAxisResponseCurvePoint(axis, 2, value);
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return (void) Printf("%g\n", sticks[pad]->GetAxisResponseCurvePoint(axis, 2));
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}
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if (command == "curve-y2")
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{
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if (set) sticks[pad]->SetAxisResponseCurvePoint(axis, 3, value);
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return (void) Printf("%g\n", sticks[pad]->GetAxisResponseCurvePoint(axis, 3));
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}
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if (command == "map")
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{
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if (set) sticks[pad]->SetAxisMap(axis, (EJoyAxis)value);
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return (void) Printf("%d\n", sticks[pad]->GetAxisMap(axis));
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}
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return usage();
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}
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//===========================================================================
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//
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// Joy_RemoveDeadZone
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//
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//===========================================================================
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double Joy_RemoveDeadZone(double axisval, double deadzone, uint8_t *buttons)
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{
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uint8_t butt;
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// Cancel out deadzone.
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if (fabs(axisval) < deadzone)
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{
|
|
axisval = 0;
|
|
butt = 0;
|
|
}
|
|
// Make the dead zone the new 0.
|
|
else if (axisval < 0)
|
|
{
|
|
axisval = (axisval + deadzone) / (1.0 - deadzone);
|
|
butt = 2; // button minus
|
|
}
|
|
else
|
|
{
|
|
axisval = (axisval - deadzone) / (1.0 - deadzone);
|
|
butt = 1; // button plus
|
|
}
|
|
if (buttons != NULL)
|
|
{
|
|
*buttons = butt;
|
|
}
|
|
return axisval;
|
|
}
|
|
|
|
//===========================================================================
|
|
//
|
|
// Joy_ApplyResponseCurveBezier
|
|
//
|
|
// Applies cubic bezier easing function
|
|
// Curve is defined by control points [(0,0) (x1,y1) (x2,y2) (1,1)]
|
|
// https://developer.mozilla.org/en-US/docs/Web/CSS/easing-function/cubic-bezier
|
|
//
|
|
//===========================================================================
|
|
|
|
double Joy_ApplyResponseCurveBezier(const CubicBezier &curve, double input)
|
|
{
|
|
// clamp + trivial cases
|
|
if (input == 0) return 0;
|
|
double sign = (input >= 0)? 1.0: -1.0;
|
|
input = abs(input);
|
|
input = (input > 1.0)? 1.0: input;
|
|
if (input == 1.0) return sign*input;
|
|
|
|
double t = input, T;
|
|
float x1 = curve.x1, y1 = curve.y1, x2 = curve.x2, y2 = curve.y2;
|
|
|
|
const int max_iter = 4;
|
|
for (auto i = 0; i < max_iter; i++)
|
|
{
|
|
T = 1-t;
|
|
|
|
double x = 3*T*T*t*x1 + 3*T*t*t*x2 + t*t*t;
|
|
double dx = 3*T*T*x1 + 6*T*t*(x2-x1) + 3*t*t*(1-x2);
|
|
|
|
// no div by 0
|
|
if (abs(dx) < 0.00001) break;
|
|
|
|
t = clamp(t - (x-input)/dx, 0.0, 1.0);
|
|
}
|
|
|
|
T = 1-t;
|
|
t = 3*T*T*t*y1 + 3*T*t*t*y2 + t*t*t;
|
|
|
|
return sign*t;
|
|
}
|
|
|
|
//===========================================================================
|
|
//
|
|
// Joy_XYAxesToButtons
|
|
//
|
|
// Given two axes, returns a button set for them. They should have already
|
|
// been sent through Joy_RemoveDeadZone. For axes that share the same
|
|
// physical stick, the angle the stick forms should determine whether or
|
|
// not the four component buttons are present. Going by deadzone alone gives
|
|
// you huge areas where you have to buttons pressed and thin strips where
|
|
// you only have one button pressed. For DirectInput gamepads, there is
|
|
// not much standard for how the right stick is presented, so we can only
|
|
// do this for the left stick for those, since X and Y axes are pretty
|
|
// standard. For XInput and Raw PS2 controllers, both sticks are processed
|
|
// through here.
|
|
//
|
|
//===========================================================================
|
|
|
|
int Joy_XYAxesToButtons(double x, double y)
|
|
{
|
|
if (x == 0 && y == 0)
|
|
{
|
|
return 0;
|
|
}
|
|
double rad = atan2(y, x);
|
|
if (rad < 0)
|
|
{
|
|
rad += 2*pi::pi();
|
|
}
|
|
// The circle is divided into eight segments for corresponding
|
|
// button combinations. Each segment is pi/4 radians wide. We offset
|
|
// by half this so that the segments are centered around the ideal lines
|
|
// their buttons represent instead of being right on the lines.
|
|
rad += pi::pi()/8; // Offset
|
|
rad *= 4/pi::pi(); // Convert range from [0,2pi) to [0,8)
|
|
return JoyAngleButtons[int(rad) & 7];
|
|
}
|
|
|
|
//===========================================================================
|
|
//
|
|
// Joy_GenerateButtonEvent
|
|
//
|
|
// Send either a button up or button down event for supplied key code
|
|
//
|
|
//===========================================================================
|
|
|
|
void Joy_GenerateButtonEvent(bool down, EKeyCodes which)
|
|
{
|
|
event_t event = { 0,0,0,0,0,0,0 };
|
|
event.type = down ? EV_KeyDown : EV_KeyUp;
|
|
event.data1 = which;
|
|
D_PostEvent(&event);
|
|
}
|
|
|
|
//===========================================================================
|
|
//
|
|
// Joy_GenerateButtonEvents
|
|
//
|
|
// Provided two bitmasks for a set of buttons, generates events to reflect
|
|
// any changes from the old to new set, where base is the key for bit 0,
|
|
// base+1 is the key for bit 1, etc.
|
|
//
|
|
//===========================================================================
|
|
|
|
void Joy_GenerateButtonEvents(int oldbuttons, int newbuttons, int numbuttons, int base)
|
|
{
|
|
int changed = oldbuttons ^ newbuttons;
|
|
if (changed != 0)
|
|
{
|
|
int mask = 1;
|
|
for (int j = 0; j < numbuttons; mask <<= 1, ++j)
|
|
{
|
|
if (changed & mask)
|
|
{
|
|
Joy_GenerateButtonEvent(newbuttons & mask, static_cast<EKeyCodes>(base + j));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Joy_GenerateButtonEvents(int oldbuttons, int newbuttons, int numbuttons, const int *keys)
|
|
{
|
|
int changed = oldbuttons ^ newbuttons;
|
|
if (changed != 0)
|
|
{
|
|
int mask = 1;
|
|
for (int j = 0; j < numbuttons; mask <<= 1, ++j)
|
|
{
|
|
if (changed & mask)
|
|
{
|
|
Joy_GenerateButtonEvent(newbuttons & mask, static_cast<EKeyCodes>(keys[j]));
|
|
}
|
|
}
|
|
}
|
|
}
|