Files

116 lines
3.0 KiB
C

#include <Entity/Entity.h>
#include <Core/Common/serialization.h>
#include <Core/Memory/Utils.h>
#include <stdlib.h>
void serialize_entity(Archive* ar, Entity* entity)
{
Assert(ar != NULL);
Assert(entity != NULL);
// Entity fields
serialize_class(ar, ClassKind(Entity), entity);
// Derived fields
if (entity->derived_kind != NULL && entity->derived != NULL)
{
serialize_class(ar, entity->derived_kind, entity->derived);
}
}
internal void init_Entity(void* payload)
{
Assert(payload != NULL);
Entity* entity = (Entity*)payload;
MemZeroStruct(entity);
}
internal void serialize_Entity(Archive* ar, uint16 version, void* payload)
{
(void)version;
Assert(ar != NULL);
Assert(payload != NULL);
Entity* entity = (Entity*)payload;
SERIALIZE_U64(ar, id, &entity->ID);
SERIALIZE_VEC4(ar, position, &entity->position);
}
DEFINE_CLASS_VERSIONED(Entity, 1, NULL)
String format_entity_id(Arena* arena, EntityID entity_id)
{
Assert(arena != NULL);
// Format:
// U = UserID
// LC = Local Entity Counter
// UU_LCLCLCLCLCLCLC
uint8 user_id = get_user_id(entity_id);
uint64 counter = get_local_counter(entity_id);
const size_t kBufferSize = 18;
char* buffer = ArenaPushArray(arena, char, kBufferSize);
Assert(buffer != NULL);
juliet_snprintf(buffer, kBufferSize, "%02X_%014llX", (unsigned int)user_id, (unsigned long long)counter);
String result = { .Str = buffer, .Size = kBufferSize - 1 };
return result;
}
bool8 parse_entity_id(String str, EntityID* out_id)
{
Assert(out_id != NULL);
bool8 result = false;
*out_id = kInvalid_entity_id;
if (!(str.Size != 17 || str.Str == NULL || str.Str[2] != '_'))
{
char user_hex[3] = { str.Str[0], str.Str[1], '\0' };
char* end = user_hex;
uint8 user_id = (uint8)strtoul(user_hex, &end, 16);
if (end != user_hex && user_id != kInvalid_user_id)
{
char* counter_hex = str.Str + 3;
end = counter_hex;
uint64 counter = strtoull(counter_hex, &end, 16);
if (end != counter_hex && counter < kEntityID_user_id_mask)
{
*out_id = make_entity_id(user_id, counter);
result = true;
}
}
}
return result;
}
const Class* resolve_entity_class(uint8 kind, uint32 crc)
{
Assert(kind <= ENTITY(Count));
const Class* class_ptr = kEntity_type_class_ptr[kind];
Assert(class_ptr != NULL);
Assert(class_get_crc(class_ptr) == crc);
return class_ptr;
}
const Class* find_class_by_name(String name)
{
Assert(IsValidString(name));
const Class* result = NULL;
const uint32 name_crc = crc32_bytes(name.Str, name.Size);
for (uint8 kind = 0; kind < ENTITY(Count); ++kind)
{
const Class* class_ptr = resolve_entity_class(kind, name_crc);
if (class_ptr != NULL)
{
result = class_ptr;
break;
}
}
return result;
}