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SourMesen
142884b598
The NES (and AV Famicom) both ignore consecutive reads to 4016/4017 (when the reads on 2 consecutive CPU cycles). This implements that behavior when the corresponding console type is selected. These changes also simplify the DMA code, because a lot of extra code was in the DMA logic to simulate the same result. Moving this logic to the 4016/4017 reads makes the code simpler and allows it to work properly when a regular instruction reads from 4016/4017 twice in a row, too.
121 lines
3.0 KiB
C++
121 lines
3.0 KiB
C++
#pragma once
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#include "pch.h"
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#include "Shared/ControlDeviceState.h"
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#include "Shared/SettingTypes.h"
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#include "Shared/Interfaces/IKeyManager.h"
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#include "Utilities/SimpleLock.h"
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#include "Utilities/ISerializable.h"
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class Emulator;
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class InputHud;
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struct DeviceButtonName
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{
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string Name;
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int ButtonId = 0;
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bool IsNumeric = false;
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};
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class BaseControlDevice : public ISerializable
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{
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protected:
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ControlDeviceState _state = {};
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Emulator* _emu = nullptr;
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vector<KeyMapping> _keyMappings;
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bool _strobe = false;
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ControllerType _type = ControllerType::None;
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uint8_t _port = 0;
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uint8_t _prevReadValue = 0;
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uint64_t _prevReadCycle = 0;
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bool _connected = true;
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SimpleLock _stateLock;
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virtual void RefreshStateBuffer() {}
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void EnsureCapacity(int32_t minBitCount);
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uint32_t GetByteIndex(uint8_t bit);
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virtual bool HasCoordinates();
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virtual bool IsRawString();
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bool IsCurrentPort(uint16_t addr);
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bool IsExpansionDevice();
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void StrobeProcessRead();
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void StrobeProcessWrite(uint8_t value);
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virtual string GetKeyNames() { return ""; }
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void SetPressedState(uint8_t bit, uint16_t keyCode);
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void SetPressedState(uint8_t bit, bool enabled);
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void SetMovement(MouseMovement mov);
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MouseMovement GetMovement();
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virtual void InternalSetStateFromInput();
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bool IsTurboOn(uint8_t turboSpeed);
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public:
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static constexpr int DeviceXCoordButtonId = 0xFFFE;
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static constexpr int DeviceYCoordButtonId = 0xFFFF;
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static constexpr uint8_t ExpDevicePort = 4;
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static constexpr uint8_t ConsoleInputPort = 5;
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static constexpr uint8_t MapperInputPort = 6;
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static constexpr uint8_t ExpDevicePort2 = 7;
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static constexpr uint8_t PortCount = ExpDevicePort2 + 1;
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BaseControlDevice(Emulator* emu, ControllerType type, uint8_t port, KeyMappingSet keyMappingSet = KeyMappingSet());
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virtual ~BaseControlDevice();
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virtual void Init() {}
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uint8_t GetPort();
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ControllerType GetControllerType();
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bool IsPressed(uint8_t bit);
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MousePosition GetCoordinates();
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void SetCoordinates(MousePosition pos);
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void Connect();
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void Disconnect();
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bool IsConnected();
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void ClearState();
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void SetBit(uint8_t bit);
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void ClearBit(uint8_t bit);
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void InvertBit(uint8_t bit);
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void SetBitValue(uint8_t bit, bool set);
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virtual void SetTextState(string state);
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virtual string GetTextState();
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void SetStateFromInput();
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virtual void OnAfterSetState() {}
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virtual void SetRawState(ControlDeviceState state);
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virtual ControlDeviceState GetRawState();
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virtual void InternalDrawController(InputHud& hud) {}
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virtual void DrawController(InputHud& hud);
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virtual uint8_t ReadRam(uint16_t addr) = 0;
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virtual void WriteRam(uint16_t addr, uint8_t value) = 0;
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void SetPreviousRead(uint64_t cycle, uint8_t value);
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uint8_t GetPreviousReadValue();
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uint64_t GetPreviousReadCycle();
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//Used by Lua API
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virtual vector<DeviceButtonName> GetKeyNameAssociations() { return {}; }
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virtual bool HasControllerType(ControllerType type);
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void static SwapButtons(shared_ptr<BaseControlDevice> state1, uint8_t button1, shared_ptr<BaseControlDevice> state2, uint8_t button2);
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void Serialize(Serializer& s) override;
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};
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