99 lines
2.2 KiB
C
99 lines
2.2 KiB
C
#include "sprite.h"
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#include <tonc.h>
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#include <stdlib.h>
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#define MAX_SPRITES 128
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#define MAX_AFFINES 32
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OBJ_ATTR obj_buffer[MAX_SPRITES];
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OBJ_AFFINE *obj_aff_buffer = (OBJ_AFFINE*)obj_buffer;
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static Sprite *free_sprites[MAX_SPRITES] = {NULL};
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static bool free_affines[MAX_AFFINES] = {false};
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// Sprite methods
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Sprite *sprite_new(u16 a0, u16 a1, u32 tid, u32 pb, int sprite_index)
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{
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Sprite *sprite = malloc(sizeof(Sprite));
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sprite->obj = NULL;
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sprite->aff = NULL;
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if(!free_sprites[sprite_index])
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{
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free_sprites[sprite_index] = sprite;
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}
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else
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{
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free(sprite);
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return NULL;
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}
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if (a0 & ATTR0_AFF)
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{
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int aff_index = MAX_AFFINES;
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for(int i = 0; i < MAX_AFFINES; i++)
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{
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if(!free_affines[i])
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{
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free_affines[i] = true;
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aff_index = i;
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break;
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}
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}
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if (aff_index == MAX_AFFINES)
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{
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free(sprite);
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return NULL;
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}
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a1 = a1 | ATTR1_AFF_ID(aff_index);
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sprite->obj = &obj_buffer[sprite_index];
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sprite->aff = &obj_aff_buffer[aff_index];
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obj_set_attr(sprite->obj, a0, a1, ATTR2_PALBANK(pb) | tid);
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obj_aff_identity(&obj_aff_buffer[aff_index]);
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return sprite;
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}
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else
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{
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sprite->obj = &obj_buffer[sprite_index];
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obj_set_attr(sprite->obj, a0, a1, ATTR2_PALBANK(pb) | tid);
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return sprite;
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}
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}
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void sprite_destroy(Sprite **sprite)
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{
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if (*sprite == NULL) return;
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obj_hide((*sprite)->obj);
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free_sprites[(*sprite)->obj - obj_buffer] = NULL;
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if ((*sprite)->aff != NULL)
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{
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free_affines[(*sprite)->aff - obj_aff_buffer] = false;
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}
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free(*sprite);
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*sprite = NULL;
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}
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int sprite_get_layer(Sprite *sprite)
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{
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if (sprite == NULL || sprite->obj == NULL) return -1;
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return sprite->obj - obj_buffer;
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}
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// Sprite functions
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void sprite_init()
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{
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oam_init(obj_buffer, MAX_SPRITES);
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}
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void sprite_draw()
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{
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obj_copy(obj_mem, obj_buffer, MAX_SPRITES);
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obj_aff_copy(obj_aff_mem, obj_aff_buffer, MAX_AFFINES);
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oam_copy(oam_mem, obj_buffer, MAX_SPRITES);
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} |