93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
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class IndexedSprite
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{
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public:
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IndexedSprite(int16_t x, uint16_t y, uint8_t *bitmap, uint16_t *palette, int16_t w, int16_t h, int16_t x_skip, bool loop, size_t frames, int16_t speed_divider)
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: _x(x), _y(y), _bitmap(bitmap), _palette(palette), _w(w), _h(h), _x_skip(x_skip), _loop(loop), _frames(frames), _speed_divider(speed_divider)
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{
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}
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IndexedSprite(int16_t x, uint16_t y, uint8_t *bitmap, uint16_t *palette, int16_t w, int16_t h, int16_t x_skip, bool loop, size_t frames, int16_t speed_divider, uint8_t chroma_key)
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: _x(x), _y(y), _bitmap(bitmap), _palette(palette), _w(w), _h(h), _x_skip(x_skip), _loop(loop), _frames(frames), _speed_divider(speed_divider), _chroma_key(chroma_key)
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{
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_has_chroma_key = true;
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}
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void h_scroll(int16_t v)
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{
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h_scroll(v, _w);
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}
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void h_scroll(int16_t v, int16_t bound)
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{
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_curr_sub_scroll += v;
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while (_curr_sub_scroll > _speed_divider)
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{
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++_x;
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_curr_sub_scroll -= _speed_divider;
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}
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while (_curr_sub_scroll < -_speed_divider)
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{
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--_x;
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_curr_sub_scroll += _speed_divider;
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}
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if (_x < -(_w))
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{
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_x = bound;
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}
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else if (_x > bound)
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{
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_x = -(_w);
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}
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}
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void next_frame()
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{
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_curr_sub_frame++;
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if (_curr_sub_frame > _speed_divider)
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{
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++_curr_frame;
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_curr_sub_frame -= _speed_divider;
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}
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if (_curr_frame >= _frames)
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{
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_curr_frame = 0;
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}
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}
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void draw(Arduino_GFX *gfx)
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{
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if (_has_chroma_key)
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{
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gfx->drawIndexedBitmap(_x, _y, _bitmap + (_curr_frame * _w), _palette, _chroma_key, _w, _h, _x_skip);
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if (_loop)
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{
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gfx->drawIndexedBitmap((_x < 0) ? (_x + _w) : (_x - _w), _y, _bitmap + (_curr_frame * _w), _palette, _chroma_key, _w, _h, _x_skip);
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}
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}
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else
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{
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gfx->drawIndexedBitmap(_x, _y, _bitmap + (_curr_frame * _w), _palette, _w, _h, _x_skip);
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if (_loop)
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{
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gfx->drawIndexedBitmap((_x < 0) ? (_x + _w) : (_x - _w), _y, _bitmap + (_curr_frame * _w), _palette, _w, _h);
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}
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}
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}
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private:
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int16_t _x;
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int16_t _y;
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uint16_t *_palette;
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uint8_t *_bitmap;
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int16_t _w;
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int16_t _h;
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int16_t _x_skip;
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bool _loop;
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uint8_t _chroma_key;
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bool _has_chroma_key = false;
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size_t _frames;
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int16_t _speed_divider;
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size_t _curr_frame = 0;
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int16_t _curr_sub_scroll = 0;
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int16_t _curr_sub_frame = 0;
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};
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