mirror of
https://github.com/SourMesen/Mesen-S.git
synced 2024-06-23 06:41:55 -04:00
104 lines
2.9 KiB
C++
104 lines
2.9 KiB
C++
#include "stdafx.h"
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#include "SnesController.h"
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#include "Console.h"
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SnesController::SnesController(Console* console, uint8_t port, KeyMappingSet keyMappings) : BaseControlDevice(console, port, keyMappings)
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{
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_turboSpeed = keyMappings.TurboSpeed;
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}
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string SnesController::GetKeyNames()
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{
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return "ABXYLRSTUDLR";
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}
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void SnesController::InternalSetStateFromInput()
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{
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for(KeyMapping keyMapping : _keyMappings) {
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SetPressedState(Buttons::A, keyMapping.A);
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SetPressedState(Buttons::B, keyMapping.B);
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SetPressedState(Buttons::X, keyMapping.X);
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SetPressedState(Buttons::Y, keyMapping.Y);
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SetPressedState(Buttons::L, keyMapping.L);
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SetPressedState(Buttons::R, keyMapping.R);
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SetPressedState(Buttons::Start, keyMapping.Start);
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SetPressedState(Buttons::Select, keyMapping.Select);
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SetPressedState(Buttons::Up, keyMapping.Up);
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SetPressedState(Buttons::Down, keyMapping.Down);
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SetPressedState(Buttons::Left, keyMapping.Left);
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SetPressedState(Buttons::Right, keyMapping.Right);
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uint8_t turboFreq = 1 << (4 - _turboSpeed);
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bool turboOn = (uint8_t)(_console->GetFrameCount() % turboFreq) < turboFreq / 2;
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if(turboOn) {
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SetPressedState(Buttons::A, keyMapping.TurboA);
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SetPressedState(Buttons::B, keyMapping.TurboB);
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SetPressedState(Buttons::X, keyMapping.TurboX);
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SetPressedState(Buttons::Y, keyMapping.TurboY);
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SetPressedState(Buttons::L, keyMapping.TurboL);
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SetPressedState(Buttons::R, keyMapping.TurboR);
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}
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}
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}
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uint16_t SnesController::ToByte()
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{
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//"A Super NES controller returns a 16-bit report in a similar order: B, Y, Select, Start, Up, Down, Left, Right, A, X, L, R, then four 0 bits."
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return
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(uint8_t)IsPressed(Buttons::B) |
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((uint8_t)IsPressed(Buttons::Y) << 1) |
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((uint8_t)IsPressed(Buttons::Select) << 2) |
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((uint8_t)IsPressed(Buttons::Start) << 3) |
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((uint8_t)IsPressed(Buttons::Up) << 4) |
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((uint8_t)IsPressed(Buttons::Down) << 5) |
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((uint8_t)IsPressed(Buttons::Left) << 6) |
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((uint8_t)IsPressed(Buttons::Right) << 7) |
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((uint8_t)IsPressed(Buttons::A) << 8) |
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((uint8_t)IsPressed(Buttons::X) << 9) |
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((uint8_t)IsPressed(Buttons::L) << 10) |
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((uint8_t)IsPressed(Buttons::R) << 11);
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}
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void SnesController::Serialize(Serializer & s)
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{
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BaseControlDevice::Serialize(s);
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s.Stream(_stateBuffer);
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}
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void SnesController::RefreshStateBuffer()
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{
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_stateBuffer = (uint32_t)ToByte();
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}
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ControllerType SnesController::GetControllerType()
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{
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return ControllerType::SnesController;
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}
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uint8_t SnesController::ReadRam(uint16_t addr)
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{
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uint8_t output = 0;
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if(IsCurrentPort(addr)) {
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StrobeProcessRead();
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if(_port >= 2) {
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output = (_stateBuffer & 0x01) << 1; //P3/P4 are reported in bit 2
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} else {
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output = _stateBuffer & 0x01;
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}
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_stateBuffer >>= 1;
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//"All subsequent reads will return D=1 on an authentic controller but may return D=0 on third party controllers."
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_stateBuffer |= 0x8000;
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}
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return output;
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}
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void SnesController::WriteRam(uint16_t addr, uint8_t value)
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{
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StrobeProcessWrite(value);
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}
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