91 lines
2.4 KiB
C++
91 lines
2.4 KiB
C++
#pragma once
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#include <Nes_Emu.h>
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#include <Nes_State.h>
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#include <emuInstance.hpp>
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#define _DUMMY_SIZE 65536
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extern void register_misc_mappers();
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extern void register_extra_mappers();
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extern void register_mapper_70();
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class QuickNESInstance : public EmuInstance
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{
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public:
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QuickNESInstance() : EmuInstance()
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{
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// Creating new emulator
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_nes = new Nes_Emu;
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// Allocating video buffer
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video_buffer = (uint8_t *)malloc(image_width * image_height);
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// Setting video buffer
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_nes->set_pixels(video_buffer, image_width + 8);
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// If running the original QuickNES, register extra mappers now
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register_misc_mappers();
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register_extra_mappers();
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register_mapper_70();
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}
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virtual bool loadROMFileImpl(const std::string &romData) override
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{
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// Loading rom data
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Mem_File_Reader romReader(romData.data(), (int)romData.size());
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Auto_File_Reader romFile(romReader);
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auto result = _nes->load_ines(romFile);
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return result == 0;
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}
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uint8_t *getLowMem() const override { return _nes->low_mem(); };
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uint8_t *getNametableMem() const override { return _nes->nametable_mem(); };
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uint8_t *getHighMem() const override { return _nes->high_mem(); };
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const uint8_t *getChrMem() const override { return _nes->chr_mem(); };
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size_t getChrMemSize() const override { return _nes->chr_size(); };
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void serializeState(uint8_t *state) const override
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{
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Mem_Writer w(state, _stateSize, 0);
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Auto_File_Writer a(w);
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_nes->save_state(a);
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}
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void deserializeState(const uint8_t *state) override
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{
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Mem_File_Reader r(state, _stateSize);
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Auto_File_Reader a(r);
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_nes->load_state(a);
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}
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void advanceStateImpl(const inputType controller1, const inputType controller2) override
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{
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if (_doRendering == true) _nes->emulate_frame(controller1, controller2);
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if (_doRendering == false) _nes->emulate_skip_frame(controller1, controller2);
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}
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std::string getCoreName() const override { return "QuickNES"; }
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void doSoftReset() override { _nes->reset(false); }
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void doHardReset() override { _nes->reset(true); }
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void *getInternalEmulatorPointer() const override { return _nes; }
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private:
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inline size_t getStateSizeImpl() const override
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{
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uint8_t *data = (uint8_t *)malloc(_DUMMY_SIZE);
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Mem_Writer w(data, _DUMMY_SIZE);
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Auto_File_Writer a(w);
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_nes->save_state(a);
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free(data);
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return w.size();
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}
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// Video buffer
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uint8_t *video_buffer;
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// Emulator instance
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Nes_Emu *_nes;
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};
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