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82 lines
1.9 KiB
C++
82 lines
1.9 KiB
C++
#pragma once
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#include <array>
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#include <cstdint>
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#include "ObjectAttribute.h"
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namespace EightBit {
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class Ram;
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namespace GameBoy {
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class AbstractColourPalette;
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class CharacterDefinition;
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class Bus;
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class Display final {
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public:
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enum {
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BufferWidth = 256,
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BufferHeight = 256,
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BufferCharacterWidth = BufferWidth / 8,
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BufferCharacterHeight = BufferHeight / 8,
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RasterWidth = 160,
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RasterHeight = 144,
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PixelCount = RasterWidth * RasterHeight,
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};
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Display(const AbstractColourPalette* colours, Bus& bus, Ram& oam, Ram& vram) noexcept;
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[[nodiscard]] const auto& pixels() const noexcept { return m_pixels; }
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void renderCurrentScanline() noexcept;
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void loadObjectAttributes() noexcept;
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private:
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enum class tile_offset_t {
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Signed, Unsigned,
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};
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std::array<uint32_t, PixelCount> m_pixels = { 0 };
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Bus& m_bus;
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Ram& m_oam;
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Ram& m_vram;
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const AbstractColourPalette* m_colours;
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std::array<ObjectAttribute, 40> m_objectAttributes = { ObjectAttribute() };
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uint8_t m_control = 0;
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uint8_t m_scanLine = 0;
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[[nodiscard]] std::array<int, 4> createPalette(int address) noexcept;
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void renderBackground() noexcept;
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void renderBackground(
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int bgArea, int bgCharacters,
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tile_offset_t offsetType,
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int offsetX, int offsetY,
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const std::array<int, 4>& palette) noexcept;
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void renderObjects() noexcept;
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void renderSpriteTile(
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int height,
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int drawX, int drawY,
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bool flipX, bool flipY,
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const std::array<int, 4>& palette,
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const CharacterDefinition& definition) noexcept;
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void renderBackgroundTile(
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int drawX, int drawY,
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const std::array<int, 4>& palette,
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const CharacterDefinition& definition) noexcept;
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void renderTile(
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int height,
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int drawX, int drawY,
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bool flipX, bool flipY, bool allowTransparencies,
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const std::array<int, 4>& palette,
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const CharacterDefinition& definition) noexcept;
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};
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}
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} |