mirror of
https://github.com/libretro/Mesen.git
synced 2024-11-23 09:09:45 +00:00
106 lines
2.9 KiB
C++
106 lines
2.9 KiB
C++
#pragma once
|
|
#include "stdafx.h"
|
|
#include <memory>
|
|
#include "BaseControlDevice.h"
|
|
|
|
class SnesController : public BaseControlDevice
|
|
{
|
|
private:
|
|
uint32_t _stateBuffer = 0;
|
|
|
|
protected:
|
|
enum Buttons { A = 0, B, Select, Start, Up, Down, Left, Right, Y, X, L, R };
|
|
|
|
string GetKeyNames() override
|
|
{
|
|
return "ABSTUDLRYXLR";
|
|
}
|
|
|
|
void InternalSetStateFromInput() override
|
|
{
|
|
for(KeyMapping keyMapping : _keyMappings) {
|
|
SetPressedState(Buttons::A, keyMapping.A);
|
|
SetPressedState(Buttons::B, keyMapping.B);
|
|
SetPressedState(Buttons::Start, keyMapping.Start);
|
|
SetPressedState(Buttons::Select, keyMapping.Select);
|
|
SetPressedState(Buttons::Up, keyMapping.Up);
|
|
SetPressedState(Buttons::Down, keyMapping.Down);
|
|
SetPressedState(Buttons::Left, keyMapping.Left);
|
|
SetPressedState(Buttons::Right, keyMapping.Right);
|
|
SetPressedState(Buttons::X, keyMapping.TurboA);
|
|
SetPressedState(Buttons::Y, keyMapping.TurboB);
|
|
SetPressedState(Buttons::L, keyMapping.LButton);
|
|
SetPressedState(Buttons::R, keyMapping.RButton);
|
|
|
|
if(!_console->GetSettings()->CheckFlag(EmulationFlags::AllowInvalidInput)) {
|
|
//If both U+D or L+R are pressed at the same time, act as if neither is pressed
|
|
if(IsPressed(Buttons::Up) && IsPressed(Buttons::Down)) {
|
|
ClearBit(Buttons::Down);
|
|
ClearBit(Buttons::Up);
|
|
}
|
|
if(IsPressed(Buttons::Left) && IsPressed(Buttons::Right)) {
|
|
ClearBit(Buttons::Left);
|
|
ClearBit(Buttons::Right);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
uint16_t ToByte()
|
|
{
|
|
//"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."
|
|
|
|
return
|
|
(uint8_t)IsPressed(Buttons::B) |
|
|
((uint8_t)IsPressed(Buttons::Y) << 1) |
|
|
((uint8_t)IsPressed(Buttons::Select) << 2) |
|
|
((uint8_t)IsPressed(Buttons::Start) << 3) |
|
|
((uint8_t)IsPressed(Buttons::Up) << 4) |
|
|
((uint8_t)IsPressed(Buttons::Down) << 5) |
|
|
((uint8_t)IsPressed(Buttons::Left) << 6) |
|
|
((uint8_t)IsPressed(Buttons::Right) << 7) |
|
|
((uint8_t)IsPressed(Buttons::A) << 8) |
|
|
((uint8_t)IsPressed(Buttons::X) << 9) |
|
|
((uint8_t)IsPressed(Buttons::L) << 10) |
|
|
((uint8_t)IsPressed(Buttons::R) << 11);
|
|
}
|
|
|
|
void StreamState(bool saving) override
|
|
{
|
|
BaseControlDevice::StreamState(saving);
|
|
Stream(_stateBuffer);
|
|
}
|
|
|
|
void RefreshStateBuffer() override
|
|
{
|
|
_stateBuffer = (uint32_t)ToByte();
|
|
}
|
|
|
|
public:
|
|
SnesController(std::shared_ptr<Console> console, uint8_t port, KeyMappingSet keyMappings) : BaseControlDevice(console, port, keyMappings)
|
|
{
|
|
}
|
|
|
|
uint8_t ReadRAM(uint16_t addr) override
|
|
{
|
|
uint8_t output = 0;
|
|
|
|
if(IsCurrentPort(addr)) {
|
|
StrobeProcessRead();
|
|
|
|
output = _stateBuffer & 0x01;
|
|
_stateBuffer >>= 1;
|
|
|
|
//"All subsequent reads will return D=1 on an authentic controller but may return D=0 on third party controllers."
|
|
_stateBuffer |= 0x8000;
|
|
}
|
|
|
|
return output;
|
|
}
|
|
|
|
void WriteRAM(uint16_t addr, uint8_t value) override
|
|
{
|
|
StrobeProcessWrite(value);
|
|
}
|
|
};
|