52 lines
1.7 KiB
Odin
52 lines
1.7 KiB
Odin
#+private
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package ecs
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import "core:log"
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import "core:container/queue"
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EntityManager :: struct {
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available_entities: queue.Queue(EntityID),
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signatures: [ENTITY_MAX]Signature,
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living_entity_count: u32,
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}
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entity_manager_init :: proc(entity_manager: ^EntityManager) {
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queue.init(&entity_manager.available_entities)
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for entity_id in 0..<ENTITY_MAX {
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queue.push_back(&entity_manager.available_entities, cast(EntityID) entity_id)
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}
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}
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entity_manager_create_entity :: proc(entity_manager: ^EntityManager) -> EntityID {
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log.assertf(entity_manager.living_entity_count < ENTITY_MAX, "Too many entities created")
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entity_id := queue.pop_front(&entity_manager.available_entities)
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entity_manager.living_entity_count += 1
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return entity_id
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}
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entity_manager_destroy_entity :: proc(entity_manager: ^EntityManager, entity_id: EntityID) {
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log.assertf(entity_id < ENTITY_MAX, "Entity ID out of range")
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signature_clear(&entity_manager.signatures[entity_id])
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queue.push_back(&entity_manager.available_entities, entity_id)
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entity_manager.living_entity_count -= 1
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}
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entity_manager_set_signature :: proc(entity_manager: ^EntityManager, entity_id: EntityID, signature: Signature) {
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log.assertf(entity_id < ENTITY_MAX, "Entity ID out of range")
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entity_manager.signatures[entity_id] = signature
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}
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entity_manager_get_signature :: proc(entity_manager: ^EntityManager, entity_id: EntityID) -> Signature {
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log.assertf(entity_id < ENTITY_MAX, "Entity ID out of range")
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return entity_manager.signatures[entity_id]
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}
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entity_manager_delete :: proc(entity_manager: ^EntityManager) {
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queue.destroy(&entity_manager.available_entities)
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}
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