mirror of
https://github.com/sehugg/8bitworkshop.git
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45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
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#include <string.h>
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#include "sprites.h"
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SpriteShadow sprshad;
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void sprite_update(char* vicbank) {
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memcpy(vicbank + 0x3f8, sprshad.spr_shapes, 8);
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VIC.spr_ena = sprshad.spr_ena;
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VIC.spr_hi_x = sprshad.spr_hi_x;
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memcpy(VIC.spr_pos, sprshad.spr_pos, 16);
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memcpy(VIC.spr_color, sprshad.spr_color, 8);
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VIC.spr_exp_x = sprshad.spr_exp_x;
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VIC.spr_exp_y = sprshad.spr_exp_y;
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VIC.spr_bg_prio = sprshad.spr_bg_prio;
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VIC.spr_mcolor = sprshad.spr_mcolor;
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VIC.spr_mcolor0 = sprshad.spr_mcolor0;
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VIC.spr_mcolor1 = sprshad.spr_mcolor1;
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}
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void sprite_shape(char* vicbank, byte index, const char* sprite_data) {
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memcpy(vicbank + index*64, sprite_data, 64);
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}
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const byte BITS[8] = {
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0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80,
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};
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void sprite_draw(byte i, word x, byte y, byte shape) {
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byte mask = BITS[i]; // 1 << i;
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sprshad.spr_ena |= mask;
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if (x >> 8)
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sprshad.spr_hi_x |= mask;
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else
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sprshad.spr_hi_x &= ~mask;
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sprshad.spr_pos[i].x = x;
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sprshad.spr_pos[i].y = y;
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sprshad.spr_shapes[i] = shape;
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}
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void sprite_clear(void) {
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sprshad.spr_ena = 0;
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}
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