flatbuffer base

flatbuffers_example_main.c

@@ -0,0 +1,120 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "monster_reader.h"
+#include "monster_verifier.h"
+#include "monster_builder.h"
+
+#undef ns
+#define ns(x) FLATBUFFERS_WRAP_NAMESPACE(MyGame_Sample, x)
+
+#define c_vec_len(V) (sizeof(V)/sizeof((V)[0]))
+
+int main()
+{
+    flatcc_builder_t builder, *B = &builder;
+    flatcc_builder_init(B);
+
+    printf("[+] Builder initialized\n");
+
+    flatbuffers_string_ref_t weapon_one_name =
+        flatbuffers_string_create_str(B, "Sword");
+    flatbuffers_string_ref_t weapon_two_name =
+        flatbuffers_string_create_str(B, "Axe");
+
+    ns(Weapon_ref_t) sword =
+        ns(Weapon_create(B, weapon_one_name, 3));
+    ns(Weapon_ref_t) axe =
+        ns(Weapon_create(B, weapon_two_name, 5));
+
+    ns(Weapon_vec_start(B));
+    ns(Weapon_vec_push(B, sword));
+    ns(Weapon_vec_push(B, axe));
+    ns(Weapon_vec_ref_t) weapons = ns(Weapon_vec_end(B));
+
+    uint8_t treasure[] = {0,1,2,3,4,5,6,7,8,9};
+    flatbuffers_uint8_vec_ref_t inventory =
+        flatbuffers_uint8_vec_create(B, treasure, c_vec_len(treasure));
+
+    flatbuffers_string_ref_t name =
+        flatbuffers_string_create_str(B, "Orc");
+
+    uint16_t hp = 300;
+    uint16_t mana = 150;
+
+    ns(Vec3_t) pos = {1.0f, 2.0f, 3.0f};
+
+    ns(Vec3_vec_start(B));
+    ns(Vec3_vec_push(B, &pos));
+    ns(Vec3_vec_ref_t) path = ns(Vec3_vec_end(B));
+
+    ns(Equipment_union_ref_t) equipped =
+        ns(Equipment_as_Weapon(axe));
+
+    ns(Monster_create_as_root(
+        B, &pos, mana, hp, name,
+        inventory, ns(Color_Red),
+        weapons, equipped, path));
+
+    uint8_t *buf;
+    size_t size;
+
+    buf = flatcc_builder_finalize_buffer(B, &size);
+
+    printf("[+] Buffer built, size = %zu bytes\n", size);
+
+
+    // 🔍 Верификация
+    if (ns(Monster_verify_as_root(buf, size))) {
+        printf("[!] Buffer verification FAILED\n");
+        return -1;
+    }
+    printf("[+] Buffer verification OK\n");
+
+    // 📖 Чтение
+    ns(Monster_table_t) m = ns(Monster_as_root(buf));
+
+    printf("\n===== MONSTER DUMP =====\n");
+
+    printf("Name: %s\n", ns(Monster_name(m)));
+    printf("HP: %u\n", ns(Monster_hp(m)));
+    printf("Mana: %u\n", ns(Monster_mana(m)));
+
+    ns(Vec3_struct_t) p = ns(Monster_pos(m));
+    printf("Position: x=%.2f y=%.2f z=%.2f\n",
+        ns(Vec3_x(p)), ns(Vec3_y(p)), ns(Vec3_z(p)));
+
+    flatbuffers_uint8_vec_t inv = ns(Monster_inventory(m));
+    size_t inv_len = flatbuffers_uint8_vec_len(inv);
+
+    printf("Inventory (%zu): ", inv_len);
+    for (size_t i = 0; i < inv_len; i++) {
+        printf("%u ", flatbuffers_uint8_vec_at(inv, i));
+    }
+    printf("\n");
+
+    ns(Weapon_vec_t) wv = ns(Monster_weapons(m));
+    size_t wlen = ns(Weapon_vec_len(wv));
+
+    printf("Weapons (%zu):\n", wlen);
+    for (size_t i = 0; i < wlen; i++) {
+        ns(Weapon_table_t) w = ns(Weapon_vec_at(wv, i));
+        printf("  - %s (dmg=%u)\n",
+            ns(Weapon_name(w)),
+            ns(Weapon_damage(w)));
+    }
+
+    if (ns(Monster_equipped_type(m)) == ns(Equipment_Weapon)) {
+        ns(Weapon_table_t) w = ns(Monster_equipped(m));
+        printf("Equipped: %s (dmg=%u)\n",
+            ns(Weapon_name(w)),
+            ns(Weapon_damage(w)));
+    }
+
+    printf("========================\n\n");
+
+    free(buf);
+    flatcc_builder_clear(B);
+
+    return 0;
+}