libretro/retroluxury
1
0
Fork 0
mirror of https://github.com/libretro/retroluxury.git synced 2024-11-27 09:50:33 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

split layer and flags, allow for NULL image

Browse Source
This commit is contained in:
Andre Leiradella 2015-04-25 00:17:02 -03:00
parent 4950e67965
commit c01505f00c
2 changed files with 34 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
src/rl_sprite.c
View File

@ -27,7 +27,7 @@ rl_sprite_t* rl_sprite_create( void )
{
rl_sprite_t* sprite = &sprites[ num_sprites++ ].sprite;
sprite->layer = 0;
sprite->layer = sprite->flags = 0;
sprite->x = sprite->y = 0;
sprite->image = NULL;
@ -42,8 +42,11 @@ static int compare( const void* e1, const void* e2 )
const spt_t* s1 = (const spt_t*)e1;
const spt_t* s2 = (const spt_t*)e2;
int32_t c1 = s1->sprite.layer | ( -( s1->sprite.image == NULL ) & RL_SPRITE_INVISIBLE );
int32_t c2 = s2->sprite.layer | ( -( s2->sprite.image == NULL ) & RL_SPRITE_INVISIBLE );
int32_t c1 = s1->sprite.flags;
int32_t c2 = s2->sprite.flags;
c1 = c1 << 16 | s1->sprite.layer;
c2 = c2 << 16 | s2->sprite.layer;
return c1 - c2;
}
@ -51,15 +54,28 @@ static int compare( const void* e1, const void* e2 )
void rl_sprites_begin( void )
{
spt_t* sptptr = sprites;
const spt_t* endptr = sprites + num_sprites;
if ( sptptr < endptr )
{
do
{
sptptr->sprite.flags &= ~RL_SPRITE_TEMP_INV;
sptptr->sprite.flags |= sptptr->sprite.image == NULL;
sptptr++;
}
while ( sptptr < endptr );
}
qsort( (void*)sprites, num_sprites, sizeof( spt_t ), compare );
sprites[ num_sprites ].sprite.layer = RL_SPRITE_UNUSED; /* guard */
sprites[ num_sprites ].sprite.flags = RL_SPRITE_UNUSED; /* guard */
sptptr = sprites;
saved_ptr = saved_backgrnd;
/* Iterate over active and visible sprites and blit them */
/* layer & 0xc000U == 0 */
if ( ( sptptr->sprite.layer & RL_SPRITE_FLAGS_MASK ) == 0 )
/* flags & 0x0007U == 0 */
if ( sptptr->sprite.flags == 0 )
{
do
{
@ -67,20 +83,20 @@ void rl_sprites_begin( void )
saved_ptr = rl_image_blit( sptptr->sprite.image, sptptr->sprite.x, sptptr->sprite.y, saved_ptr );
sptptr++;
}
while ( ( sptptr->sprite.layer & RL_SPRITE_FLAGS_MASK ) == 0 );
while ( sptptr->sprite.flags == 0 );
}
num_visible = sptptr - sprites;
/* Jump over active but invisible sprites */
/* layer & 0xc000U == 0x4000U */
if ( ( sptptr->sprite.layer & RL_SPRITE_FLAGS_MASK ) == RL_SPRITE_INVISIBLE )
/* flags & 0x0004U == 0x0000U */
if ( ( sptptr->sprite.flags & RL_SPRITE_UNUSED ) == 0 )
{
do
{
sptptr++;
}
while ( ( sptptr->sprite.layer & RL_SPRITE_FLAGS_MASK ) == RL_SPRITE_INVISIBLE );
while ( ( sptptr->sprite.flags & RL_SPRITE_UNUSED ) == 0 );
}
num_sprites = sptptr - sprites;

15
src/rl_sprite.h
View File

@ -14,17 +14,18 @@ pixels when their images are blit so it can be restored before the beginning
of the next frame.
*/
#define RL_SPRITE_INVISIBLE 0x4000U
#define RL_SPRITE_UNUSED 0x8000U
#define RL_SPRITE_FLAGS_MASK 0xc000U
#define RL_SPRITE_TEMP_INV 0x0001U
#define RL_SPRITE_INVISIBLE 0x0002U
#define RL_SPRITE_UNUSED 0x0004U
typedef struct
{
rl_userdata_t ud;
uint16_t layer; /* layer and flags */
int16_t x;
int16_t y;
uint16_t layer;
uint16_t flags;
int x;
int y;
rl_image_t* image; /* the sprite's image */
}
@ -33,7 +34,7 @@ rl_sprite_t;
void rl_sprite_init( void );
rl_sprite_t* rl_sprite_create( void );
#define rl_sprite_destroy( sprite ) do { ( sprite )->layer |= RL_SPRITE_UNUSED; } while ( 0 )
#define rl_sprite_destroy( sprite ) do { ( sprite )->flags |= RL_SPRITE_UNUSED; } while ( 0 )
void rl_sprites_begin( void );
void rl_sprites_end( void );