conversion to c by gemini 4 argon

Game/Entity/Entity.c

@@ -0,0 +1,115 @@
+#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;
+}