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#include <stdint.h>
#include <string.h>
#include "spman.h"
#define SPMAN_PAT_UNUSED 0xff
#define SPMAN_MAX_SPRITES 32
#define SPMAN_MAX_PATTERNS 64
uint8_t sp_last_sprite, sp_last_fixed_sprite, sp_idx;
struct sprite_attr sp_fixed[SPMAN_MAX_SPRITES];
struct sprite_attr sp_buffer[SPMAN_MAX_SPRITES * 2];
uint8_t sp_pat_map[SPMAN_MAX_PATTERNS];
uint8_t sp_last_pat;
void spman_init()
{
sp_last_pat = 0;
memset(sp_pat_map, SPMAN_PAT_UNUSED, SPMAN_MAX_PATTERNS);
spman_sprite_flush();
}
uint8_t spman_alloc_pat(uint8_t type, uint8_t *data, uint8_t len, uint8_t flip)
{
uint8_t i;
if (sp_pat_map[type] == SPMAN_PAT_UNUSED)
{
sp_pat_map[type] = sp_last_pat;
for (i = 0; i < len; ++i)
{
if (flip)
ubox_set_sprite_pat16_flip(data, sp_last_pat);
else
ubox_set_sprite_pat16(data, sp_last_pat);
data += 32;
sp_last_pat++;
}
#ifdef SPMAN_DEBUG
if (sp_last_pat > 63)
ubox_set_colors(15, 0, 0);
#endif
}
return sp_pat_map[type] * 4;
}
void spman_sprite_flush()
{
sp_last_fixed_sprite = 0;
sp_last_sprite = 0;
}
void spman_alloc_fixed_sprite(struct sprite_attr *sp)
{
#ifdef SPMAN_DEBUG
if (sp_last_fixed_sprite + sp_last_sprite > 30)
{
ubox_set_colors(15, 0, 0);
return;
}
#endif
memcpy(&sp_fixed[sp_last_fixed_sprite++], sp, 4);
}
void spman_alloc_sprite(struct sprite_attr *sp)
{
#ifdef SPMAN_DEBUG
if (sp_last_fixed_sprite + sp_last_sprite > 30)
{
ubox_set_colors(15, 0, 0);
return;
}
#endif
memcpy(&sp_buffer[sp_last_sprite++], sp, 4);
}
static const struct sprite_attr hide = { 208, 0, 0, 0 };
static uint8_t *p;
void spman_update()
{
p = (uint8_t*) 0x1b00;
if (sp_last_sprite)
{
memcpy(&sp_buffer[sp_last_sprite], sp_buffer, sp_last_sprite * 4);
if (sp_last_sprite > 2)
sp_idx += 2;
if (sp_idx >= sp_last_sprite)
sp_idx -= sp_last_sprite;
}
else
sp_idx = 0;
memcpy(&sp_buffer[sp_idx + sp_last_sprite], &hide, 4);
ubox_wait_vsync();
if (sp_last_fixed_sprite)
{
ubox_write_vm(p, sp_last_fixed_sprite * 4, (uint8_t *)sp_fixed);
p += sp_last_fixed_sprite * 4;
}
ubox_write_vm(p, 4 + sp_last_sprite * 4, (uint8_t *)&sp_buffer[sp_idx]);
spman_sprite_flush();
}
void spman_hide_all_sprites()
{
ubox_wait_vsync();
ubox_write_vm((uint8_t *)0x1b00, 4, (uint8_t *)hide);
}
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