280 lines
8.8 KiB
C++
280 lines
8.8 KiB
C++
/*
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AppleWin : An Apple //e emulator for Windows
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Copyright (C) 1994-1996, Michael O'Brien
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Copyright (C) 1999-2001, Oliver Schmidt
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Copyright (C) 2002-2005, Tom Charlesworth
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Copyright (C) 2006-2007, Tom Charlesworth, Michael Pohoreski
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AppleWin 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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AppleWin 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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You should have received a copy of the GNU General Public License
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along with AppleWin; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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SNESMAX.CPP
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Emulate a SNES MAX controller serial interface card
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2 ports (one for each of the two possible joysticks)
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Latch = write any data to C0n0
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Clock = write any data to C0n1
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Data = read from C0n0
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n = 8 + slot number
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Data
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Bit 0 = Not Used
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Bit 1 = Not Used
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Bit 2 = Not Used
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Bit 3 = Not Used
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Bit 4 = Not Used
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Bit 5 = Not Used
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Bit 6 = Controller 2, Active Low
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Bit 7 = Controller 1, Active Low
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Once data is read, button presses (for each controller) are stored in the following structure:
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bit# 16 / 11 10 9 8 / 7 6 5 4 3 2 1 0
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m_controllerXButtons: *1 x:x:x:x:Fr:Fl:X:A / R:L:D:U:St:Sl:Y:B
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*1 = Controller plugged in status
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Alex Lukacz Aug 2021
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*/
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#include "StdAfx.h"
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#include "Joystick.h"
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#include "SNESMAX.h"
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#include "Memory.h"
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#include "YamlHelper.h"
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// Default to Sony DS4 / DualSense:
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// b11,..,b0: St,Sl / -,-,R,L,X,A,B,Y
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//
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// infoEx.dwButtons bit definitions:
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const UINT SNESMAXCard::m_mainControllerButtons[NUM_BUTTONS] =
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{
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Y,B,A,X,LB,RB,UNUSED,UNUSED, SELECT,START,UNUSED,UNUSED,UNUSED,UNUSED,UNUSED,UNUSED // bit0 -> Y, bit1 -> B, bit2 -> A, etc
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};
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// AltControllerType defaults to "8BitDo NES30 PRO" (can be reconfigured via command line + yaml mapping file)
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// b11,..,b0: St,Sl,R,L / -,-,-,Y,X,-,B,A
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//
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// infoEx.dwButtons bit definitions:
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UINT SNESMAXCard::m_altControllerButtons[2][NUM_BUTTONS] =
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{
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{A,B,UNUSED,X,Y,UNUSED,UNUSED,UNUSED, LB,RB,SELECT,START,UNUSED,UNUSED,UNUSED,UNUSED}, // bit0 -> A, bit1 -> B, bit2 -> unused, etc
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{A,B,UNUSED,X,Y,UNUSED,UNUSED,UNUSED, LB,RB,SELECT,START,UNUSED,UNUSED,UNUSED,UNUSED}
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};
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BYTE __stdcall SNESMAXCard::IORead(WORD pc, WORD addr, BYTE bWrite, BYTE value, ULONG nExecutedCycles)
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{
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const UINT slot = ((addr & 0xff) >> 4) - 8;
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SNESMAXCard* pCard = (SNESMAXCard*)MemGetSlotParameters(slot);
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BYTE output = MemReadFloatingBus(nExecutedCycles);
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switch (addr & 0xF)
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{
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case 0:
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output = (output & 0x3F) | ((pCard->m_controller2Buttons & 0x1) << 6) | ((pCard->m_controller1Buttons & 0x1) << 7);
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break;
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default:
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break;
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}
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return output;
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}
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BYTE __stdcall SNESMAXCard::IOWrite(WORD pc, WORD addr, BYTE bWrite, BYTE value, ULONG nExecutedCycles)
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{
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const UINT slot = ((addr & 0xff) >> 4) - 8;
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SNESMAXCard* pCard = (SNESMAXCard*)MemGetSlotParameters(slot);
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UINT xAxis = 0;
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UINT yAxis = 0;
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JOYINFOEX infoEx;
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infoEx.dwSize = sizeof(infoEx);
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infoEx.dwFlags = JOY_RETURNPOV | JOY_RETURNBUTTONS;
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UINT& controller1Buttons = pCard->m_controller1Buttons; // ref to object's controller1Buttons
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UINT& controller2Buttons = pCard->m_controller2Buttons; // ref to object's controller2Buttons
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switch (addr & 0xF)
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{
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case 0: // Latch
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pCard->m_buttonIndex = 0;
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controller1Buttons = 0;
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controller2Buttons = 0;
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if (GetJoystick1() >= 0 && joyGetPosEx(GetJoystick1(), &infoEx) == JOYERR_NOERROR)
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controller1Buttons = pCard->GetControllerButtons(JOYSTICKID1, infoEx, pCard->m_altControllerType[0]);
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controller1Buttons = ~controller1Buttons;
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if (GetJoystick2() >= 0 && joyGetPosEx(GetJoystick2(), &infoEx) == JOYERR_NOERROR)
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controller2Buttons = pCard->GetControllerButtons(JOYSTICKID2, infoEx, pCard->m_altControllerType[1]);
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controller2Buttons = ~controller2Buttons;
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break;
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case 1: // Clock
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if (pCard->m_buttonIndex <= NUM_BUTTONS) // NB. 17 bits (where last bit is: Controller plugged in status)
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{
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pCard->m_buttonIndex++;
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controller1Buttons = controller1Buttons >> 1;
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controller2Buttons = controller2Buttons >> 1;
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}
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break;
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default:
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break;
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}
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return 0;
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}
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UINT SNESMAXCard::GetControllerButtons(UINT joyNum, JOYINFOEX& infoEx, bool altControllerType)
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{
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UINT xAxis = (infoEx.dwXpos >> 8) & 0xFF;
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UINT yAxis = (infoEx.dwYpos >> 8) & 0xFF;
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UINT controllerButtons = 0;
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controllerButtons |= ((yAxis < 103 || infoEx.dwPOV == 0 || infoEx.dwPOV == 4500 || infoEx.dwPOV == 31500) << 4); // U Button
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controllerButtons |= ((yAxis > 153 || (infoEx.dwPOV >= 13500 && infoEx.dwPOV <= 22500)) << 5); // D Button
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controllerButtons |= ((xAxis < 103 || (infoEx.dwPOV >= 22500 && infoEx.dwPOV <= 31500)) << 6); // L Button
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controllerButtons |= ((xAxis > 153 || (infoEx.dwPOV >= 4500 && infoEx.dwPOV <= 13500)) << 7); // R Button
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UINT* controllerButtonMappings = !altControllerType ? (UINT*)m_mainControllerButtons : (UINT*)(&m_altControllerButtons[joyNum][0]);
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for (UINT i = 0; i < NUM_BUTTONS; i++)
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{
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if (infoEx.dwButtons & (1 << i))
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{
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if (controllerButtonMappings[i] != UNUSED)
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controllerButtons |= (1 << controllerButtonMappings[i]);
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}
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}
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return controllerButtons | 0x10000; // Controller plugged in status.
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}
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void SNESMAXCard::InitializeIO(LPBYTE pCxRomPeripheral)
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{
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RegisterIoHandler(m_slot, &SNESMAXCard::IORead, &SNESMAXCard::IOWrite, IO_Null, IO_Null, this, NULL);
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}
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bool SNESMAXCard::ParseControllerMappingFile(UINT joyNum, const char* pathname, std::string& errorMsg)
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{
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bool res = true;
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YamlHelper yamlHelper;
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try
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{
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if (!yamlHelper.InitParser(pathname))
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throw std::runtime_error("Controller mapping file: Failed to initialize parser or open file");
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if (yamlHelper.ParseFileHdr("AppleWin Controller Button Remapping") != 1)
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throw std::runtime_error("Controller mapping file: Version mismatch");
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std::string scalar;
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while (yamlHelper.GetScalar(scalar))
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{
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if (scalar == SS_YAML_KEY_UNIT)
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{
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yamlHelper.GetMapStartEvent();
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YamlLoadHelper yamlLoadHelper(yamlHelper);
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std::string hid = yamlLoadHelper.LoadString("HID");
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std::string desc = yamlLoadHelper.LoadString("Description");
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for (UINT i = 0; i < SNESMAXCard::NUM_BUTTONS; i++)
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{
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char szButtonNum[3] = "00";
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sprintf_s(szButtonNum, "%d", i + 1); // +1 as 1-based
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std::string buttonNum = szButtonNum;
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bool found = false;
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std::string buttonStr = yamlLoadHelper.LoadString_NoThrow(buttonNum, found);
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SNESMAXCard::Button button = SNESMAXCard::UNUSED;
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if (found)
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{
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if (buttonStr == "A") button = SNESMAXCard::A;
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else if (buttonStr == "B") button = SNESMAXCard::B;
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else if (buttonStr == "X") button = SNESMAXCard::X;
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else if (buttonStr == "Y") button = SNESMAXCard::Y;
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else if (buttonStr == "LB") button = SNESMAXCard::LB;
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else if (buttonStr == "RB") button = SNESMAXCard::RB;
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else if (buttonStr == "SELECT") button = SNESMAXCard::SELECT;
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else if (buttonStr == "START") button = SNESMAXCard::START;
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else if (buttonStr == "") button = SNESMAXCard::UNUSED;
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else throw std::runtime_error("Controller mapping file: Unknown button: " + buttonStr);
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}
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m_altControllerButtons[joyNum][i] = button;
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}
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}
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else
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{
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throw std::runtime_error("Unknown top-level scalar: " + scalar);
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}
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break; // TODO: extend to support multiple controllers
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}
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}
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catch (const std::exception& szMessage)
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{
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errorMsg = "Error with yaml file: ";
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errorMsg += pathname;
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errorMsg += "\n";
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errorMsg += szMessage.what();
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res = false;
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}
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yamlHelper.FinaliseParser();
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if (res)
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g_cmdLine.snesMaxAltControllerType[joyNum] = true; // Enable the alt controller
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return res;
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}
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//===========================================================================
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static const UINT kUNIT_VERSION = 1;
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#define SS_YAML_KEY_BUTTON_INDEX "Button Index"
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const std::string& SNESMAXCard::GetSnapshotCardName(void)
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{
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static const std::string name("SNES MAX");
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return name;
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}
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void SNESMAXCard::SaveSnapshot(YamlSaveHelper& yamlSaveHelper)
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{
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YamlSaveHelper::Slot slot(yamlSaveHelper, GetSnapshotCardName(), m_slot, kUNIT_VERSION);
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YamlSaveHelper::Label unit(yamlSaveHelper, "%s:\n", SS_YAML_KEY_STATE);
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yamlSaveHelper.SaveUint(SS_YAML_KEY_BUTTON_INDEX, m_buttonIndex);
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}
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bool SNESMAXCard::LoadSnapshot(YamlLoadHelper& yamlLoadHelper, UINT version)
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{
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if (version < 1 || version > kUNIT_VERSION)
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ThrowErrorInvalidVersion(version);
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m_buttonIndex = yamlLoadHelper.LoadUint(SS_YAML_KEY_BUTTON_INDEX);
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// Initialise with no buttons pressed (loaded state maybe part way through reading the buttons)
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m_controller1Buttons = 0x1ffff;
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m_controller2Buttons = 0x1ffff;
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return true;
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}
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