62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
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#pragma once
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#include <cstdint>
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#pragma pack(push, 4)
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namespace rage
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{
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class netObjectIds
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{
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public:
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char gap0[41];
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char byte29;
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int m_local_player_id;
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int m_object_id_response_pending_players;
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int m_last_object_id_response_time;
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char gap38[4];
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uint16_t m_usable_object_ids[8000];
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int m_next_usable_object_id_write_slot;
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int m_next_usable_object_id_read_slot;
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int m_usable_object_id_count;
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inline bool is_object_id_usable(std::uint16_t id)
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{
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if (m_usable_object_id_count <= 0)
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return false;
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int count = 0;
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for (int i = m_next_usable_object_id_read_slot + 1; m_usable_object_ids[i % 8000] != id; i++)
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if (++count > m_usable_object_id_count)
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return false;
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return true;
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}
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std::uint16_t get_usable_object_id()
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{
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int slot = ++m_next_usable_object_id_read_slot;
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m_usable_object_id_count--;
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if (slot == 8000)
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slot = 0;
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m_next_usable_object_id_read_slot = slot;
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return m_usable_object_ids[slot];
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}
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// this operation is fundamentally unsupported by the data structure the IDs are stored in, unforeseen problems may occur
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void remove_object_id(std::uint16_t id)
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{
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if (m_usable_object_id_count < 2)
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return; // we need at least 2 items
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int count = 0;
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int i;
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for (i = m_next_usable_object_id_read_slot + 1; m_usable_object_ids[i % 8000] != id; i++)
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if (++count > m_usable_object_id_count)
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return;
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auto new_id = get_usable_object_id();
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if (new_id != id)
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m_usable_object_ids[i % 8000] = new_id;
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}
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};
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}
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#pragma pack(pop)
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