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70 lines
1.7 KiB
C

#ifndef lua_ecs_cdata_h
#define lua_ecs_cdata_h
#include <assert.h>
struct entity_world;
struct ecs_capi
{
void *(*iter)(struct entity_world *w, int cid, int index);
void (*clear_type)(struct entity_world *w, int cid);
void *(*sibling)(struct entity_world *w, int cid, int index, int slibling_id);
void *(*add_sibling)(struct entity_world *w, int cid, int index, int slibling_id, const void *buffer, void *L);
void (*remove)(struct entity_world *w, int cid, int index, void *L);
};
struct ecs_context
{
struct ecs_capi *api;
struct entity_world *world;
void *L; // for memory allocator
int max_id;
int cid[1];
};
static inline void
check_id_(struct ecs_context *ctx, int cid)
{
assert(cid >= 0 && cid <= ctx->max_id);
}
static inline void *
entity_iter(struct ecs_context *ctx, int cid, int index)
{
check_id_(ctx, cid);
return ctx->api->iter(ctx->world, ctx->cid[cid], index);
}
static inline void
entity_clear_type(struct ecs_context *ctx, int cid)
{
check_id_(ctx, cid);
ctx->api->clear_type(ctx->world, ctx->cid[cid]);
}
static inline void *
entity_sibling(struct ecs_context *ctx, int cid, int index, int slibling_id)
{
check_id_(ctx, cid);
check_id_(ctx, slibling_id);
return ctx->api->sibling(ctx->world, ctx->cid[cid], index, ctx->cid[slibling_id]);
}
static inline void *
entity_add_sibling(struct ecs_context *ctx, int cid, int index, int slibling_id, const void *buffer)
{
check_id_(ctx, cid);
check_id_(ctx, slibling_id);
return ctx->api->add_sibling(ctx->world, ctx->cid[cid], index, ctx->cid[slibling_id], buffer, ctx->L);
}
static inline void
entity_remove(struct ecs_context *ctx, int cid, int index)
{
check_id_(ctx, cid);
ctx->api->remove(ctx->world, ctx->cid[cid], index, ctx->L);
}
#endif