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https://github.com/risingPhil/libpokemegb.git
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2643a00ca7
Now you can decode the pokemon mini sprites/party icons from the rom into an RGB/RGBA buffer
76 lines
2.8 KiB
C++
76 lines
2.8 KiB
C++
#ifndef _SPRITERENDERER_H
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#define _SPRITERENDERER_H
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#include <cstdint>
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#define MAX_SPRITE_TILES_WIDTH 7
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#define MAX_SPRITE_PIXEL_WIDTH MAX_SPRITE_TILES_WIDTH * 8
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#define MAX_SPRITE_TILES_HEIGHT 7
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#define MAX_SPRITE_PIXEL_HEIGHT MAX_SPRITE_TILES_HEIGHT * 8
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#define MAX_NUM_BYTES_PER_COLOR_COMPONENT 4
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class SpriteRenderer
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{
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public:
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enum class OutputFormat
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{
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RGB,
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RGBA16,
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RGBA32
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};
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/**
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* @brief This enum indicates the order the tiles appear in the input data
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*/
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enum class TileOrder
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{
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HORIZONTAL,
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VERTICAL
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};
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SpriteRenderer();
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/**
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* Returns the number of RGB bytes to store RGB values for a sprite with the given number of horizontal and vertical tiles
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*/
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uint32_t getNumRGBBytesFor(uint8_t numHTiles, uint8_t numVTiles) const;
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/**
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* @brief This function draw the given spriteBuffer to the internal rgbBuffer_ and returns this rgbBuffer_ pointer
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*
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* NOTE: the next call to this function or drawTile() overwrites the data inside the returned buffer. So if you want to keep this data around, copy it.
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* You don't need to free() the data.
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*/
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uint8_t* draw(const uint8_t* spriteBuffer, OutputFormat format, uint16_t palette[4], uint8_t numHTiles, uint8_t numVTiles, TileOrder tileOrder = TileOrder::VERTICAL);
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/**
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* @brief This function draws the given buffer that supposedly contains a tile (16 bytes at 2BPP) to the internal buffer_ at the given [xOffset, yOffset] and
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* returns this internal buffer_
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*
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* NOTE: the next call to this function or draw() overwrites the data inside the returned buffer. So if you want to keep this data around, copy it.
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* You don't need to free() the data.
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*/
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uint8_t* drawTile(const uint8_t* tileBuffer, OutputFormat format, uint16_t palette[4], uint16_t xOffset, uint16_t yOffset, uint8_t outputBufferHTiles, bool mirrorHorizontally = false);
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/**
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* @brief This function removes the white background in the current internal buffer_ and returns this buffer
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*
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* NOTE: the next call to draw() or drawTile() overwrites the data inside the returned buffer. So if you want to keep this data around, copy it.
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* You don't need to free() the data.
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*/
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uint8_t* removeWhiteBackground(uint8_t numHTiles, uint8_t numVTiles);
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protected:
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private:
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void internalDrawTile(const uint8_t* tileBuffer, uint16_t xOffset, uint16_t yOffset, uint16_t spriteBufferWidthInPixels, bool mirrorHorizontally);
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void setFormatAndPalette(OutputFormat format, uint16_t palette[4]);
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uint8_t buffer_[MAX_SPRITE_PIXEL_WIDTH * MAX_SPRITE_PIXEL_HEIGHT * MAX_NUM_BYTES_PER_COLOR_COMPONENT];
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OutputFormat format_;
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const uint8_t* rgbPalette_;
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const uint16_t* rgba16Palette_;
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uint8_t numColorComponents_;
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};
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#endif |