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No entity_id reusage yet

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This commit is contained in:
NukeBird 2025-02-14 22:27:52 +03:00
parent 4e3ae245b8
commit f1f965a284
1 changed files with 7 additions and 6 deletions
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13
zecsy.hpp
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@ -2,7 +2,7 @@
#include <cstdint>
#include <bitset>
#include <format>
#include <exception>
#include <stdexcept>
#ifndef MAX_ZECSY_ENTITIES
#define MAX_ZECSY_ENTITIES 65536
@ -44,7 +44,7 @@ namespace zecsy
void destroy_entity(entity_id e);
bool is_alive(entity_id e) const;
private:
std::bitset<MAX_ZECSY_ENTITIES> entities_bitset;
std::bitset<MAX_ZECSY_ENTITIES + 1> entities_bitset;
entity_id entity_counter = 0;
};
@ -65,11 +65,12 @@ namespace zecsy
inline entity world::make_entity()
{
auto id = (++entity_counter)%MAX_ZECSY_ENTITIES;
if(is_alive(id))
auto id = ++entity_counter;
if(id > MAX_ZECSY_ENTITIES)
{
throw std::runtime_error(std::format("entity_id #{} already in use,"
" can't make a new entity", id));
throw std::runtime_error(std::format("Entity id {} exceeds "
"MAX_ZECSY_ENTITIES ({})", id, MAX_ZECSY_ENTITIES));
}
entities_bitset.set(id);