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https://github.com/sehugg/8bitworkshop.git
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43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
#ifndef _SPRITES_H
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#define _SPRITES_H
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#include "common.h"
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typedef struct SpriteShadow {
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struct {
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byte x; /* X coordinate */
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byte y; /* Y coordinate */
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} spr_pos[8];
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byte spr_hi_x; /* High bits of X coordinate */
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byte spr_ena; /* Enable sprites */
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byte spr_exp_y; /* Expand sprites in Y dir */
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byte spr_bg_prio; /* Priority to background */
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byte spr_mcolor; /* Sprite multicolor bits */
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byte spr_exp_x; /* Expand sprites in X dir */
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byte spr_color[8]; /* Colors for the sprites */
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byte spr_shapes[8]; /* sprite shapes */
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} SpriteShadow;
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/* sprite shadow buffer */
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extern SpriteShadow sprshad;
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/* set one or more sprite patterns from a byte array */
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void sprite_set_shapes(const void* sprite_data,
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byte index,
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byte count);
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/* clear all sprites from shadow buffer */
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void sprite_clear();
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/* draw a sprite into shadow buffer */
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void sprite_draw(byte index, word x, byte y, byte shape);
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/* update sprite registers */
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void sprite_update(byte* screenmem);
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/* get the closest sprite collision
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given the set of collision flags */
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byte sprite_get_closest_collision(byte index, byte spr_coll);
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// bit lookup table
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extern const byte BITS[8];
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#endif
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