mirror of https://github.com/nmlgc/ReC98.git
48 lines
1.8 KiB
C++
48 lines
1.8 KiB
C++
#include "th03/hardware/vram.hpp"
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// Relative offset inside the SPRITE16 sprite area, with 0 corresponding to
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// SPRITE16_OFFSET.
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typedef uvram_byte_amount_t sprite16_offset_t;
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extern pixel_t sprite16_put_h;
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extern VRAMWord sprite16_put_w;
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extern screen_x_t sprite16_clip_left;
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extern screen_x_t sprite16_clip_right;
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enum sprite16_put_func_t {
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SPF_NORMAL = 0,
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// Repeatedly draws the sprite to form a gapless column, starting from the
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// top Y coordinate given to sprite16_putx() down to the bottom of VRAM.
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SPF_DOWNWARDS_COLUMN = 24,
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_sprite16_put_func_t_FORCE_UINT16 = 0xFFFF
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};
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// Copies the entire sprite area in VRAM from page [dst_page ^ 1] to
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// [dst_page]. Returns true if successful, false if the temporary memory
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// couldn't be allocated.
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bool16 pascal sprite16_sprites_copy_page(int dst_page);
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// Initializes SPRITE16 for double-buffered blitting of the sprites that have
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// been blitted to the sprite area on VRAM page 0.
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void pascal sprite16_sprites_commit(void);
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// Draws the sprite with the given offset in the SPRITE16 sprite area at the
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// given (left, top) position in screen (not VRAM) coordinates. The left and
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// right parts of the sprite are clipped in 16-pixel increments to stay within
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// the left and right clipping points, so make sure to hide at least 16 more
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// pixels right of `sprite16_clip_left` and left of `sprite16_clip_right` on
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// purpose.
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void pascal sprite16_put(screen_x_t left, screen_y_t top, sprite16_offset_t so);
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// Like sprite16_put(), but using an optional drawing function.
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void pascal sprite16_putx(
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screen_x_t left,
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screen_y_t top,
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sprite16_offset_t so,
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sprite16_put_func_t func
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);
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// Like sprite16_put(), but ignores the clipping points.
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void pascal sprite16_put_noclip(
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screen_x_t left, screen_y_t top, sprite16_offset_t so
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);
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