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Update: fix Init bug

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Rodolfo Barcelli Jo 2026-01-17 13:24:30 +08:00
parent dd308bfc82
commit 748401ce97
1 changed files with 27 additions and 2 deletions
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29
becs.h
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@ -2,6 +2,7 @@
#define BECS_H #define BECS_H
#include <stdint.h> #include <stdint.h>
#include <stddef.h>
typedef struct BECS_ComponentArray BECS_ComponentArray; typedef struct BECS_ComponentArray BECS_ComponentArray;
typedef struct BECS_Properties BECS_Properties; typedef struct BECS_Properties BECS_Properties;
@ -11,7 +12,10 @@ size_t BECS_GetMinMemorySize(BECS_Properties props);
BECS_ECS *BECS_Init(void *memory, size_t size, BECS_Properties *props); BECS_ECS *BECS_Init(void *memory, size_t size, BECS_Properties *props);
int32_t BECS_AddComponent(BECS_ECS *ecs, uint32_t entityID, uint64_t componentBitMask, void *component); int32_t BECS_AddComponent(BECS_ECS *ecs, uint32_t entityID, uint64_t componentBitMask, void *component);
#define MAX_ENTITY_COUNT 100
#ifdef BECS_IMPLEMENTATION #ifdef BECS_IMPLEMENTATION
#ifdef MAX_ENTITY_COUNT
struct BECS_ComponentArray { struct BECS_ComponentArray {
uint32_t lastEntityAdded; uint32_t lastEntityAdded;
@ -52,16 +56,36 @@ BECS_ECS *BECS_Init
{ {
BECS_ECS *ecs = (BECS_ECS *)memory; BECS_ECS *ecs = (BECS_ECS *)memory;
uint64_t *bitMasks = (uint64_t *)(ecs + 1); uint64_t *bitMasks = (uint64_t *)(ecs + 1);
BECS_ComponentArray *componentSets = (BECS_ComponentArray *)(bitMasks + props->maxEntities); BECS_ComponentArray *componentSets = (BECS_ComponentArray *)((uint8_t *)(ecs + 1) + props->maxEntities);
ecs->bitMasks = bitMasks; ecs->bitMasks = bitMasks;
ecs->componentSets = componentSets; ecs->componentSets = componentSets;
ecs->props = *props; ecs->props = *props;
ecs->bitMasks = 0; for (uint32_t i = 0; i < props->maxEntities; i++)
{
ecs->bitMasks[i] = 0;
}
for (uint32_t i = 0; i < props->numComponents; i++) for (uint32_t i = 0; i < props->numComponents; i++)
{ {
ecs->componentSets[i].unitSize = props->componentSizes[i];
ecs->componentSets[i].capacity = ecs->componentSets[i].unitSize * props->maxEntities;
ecs->componentSets[i].lastEntityAdded = props->maxEntities + 1;
ecs->componentSets[i].length = 0; ecs->componentSets[i].length = 0;
} }
uint32_t index = 0;
// FIX: This is completely fucked. I feel like I am overcomplicating this... Might be easier to use a defined constant :/
for (uint32_t i = 0; i < props->numComponents; i++)
{
uint32_t index = i;
if (index - 1 > props->numComponents)
{
index = 1;
}
ecs->componentSets[index - 1].array = componentSets + 4;
}
return ecs; return ecs;
} }
@ -108,5 +132,6 @@ BECS_AddComponent(BECS_ECS *ecs, uint32_t entityID, uint64_t componentBitMask, v
// { // {
// } // }
#endif #endif
#endif
#endif #endif