113 lines
4.2 KiB
Java
113 lines
4.2 KiB
Java
/*
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* Copyright 2015 Google Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// Run this file with the `java_sample.sh` script.
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import MyGame.Sample.Color;
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import MyGame.Sample.Equipment;
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import MyGame.Sample.Monster;
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import MyGame.Sample.Vec3;
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import MyGame.Sample.Weapon;
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import com.google.flatbuffers.FlatBufferBuilder;
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import java.nio.ByteBuffer;
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class SampleBinary {
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// Example how to use FlatBuffers to create and read binary buffers.
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public static void main(String[] args) {
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FlatBufferBuilder builder = new FlatBufferBuilder(0);
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// Create some weapons for our Monster ('Sword' and 'Axe').
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int weaponOneName = builder.createString("Sword");
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short weaponOneDamage = 3;
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int weaponTwoName = builder.createString("Axe");
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short weaponTwoDamage = 5;
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// Use the `createWeapon()` helper function to create the weapons, since we set every field.
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int[] weaps = new int[2];
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weaps[0] = Weapon.createWeapon(builder, weaponOneName, weaponOneDamage);
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weaps[1] = Weapon.createWeapon(builder, weaponTwoName, weaponTwoDamage);
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// Serialize the FlatBuffer data.
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int name = builder.createString("Orc");
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byte[] treasure = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
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int inv = Monster.createInventoryVector(builder, treasure);
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int weapons = Monster.createWeaponsVector(builder, weaps);
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int pos = Vec3.createVec3(builder, 1.0f, 2.0f, 3.0f);
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Monster.startMonster(builder);
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Monster.addPos(builder, pos);
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Monster.addName(builder, name);
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Monster.addColor(builder, Color.Red);
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Monster.addHp(builder, (short)300);
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Monster.addInventory(builder, inv);
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Monster.addWeapons(builder, weapons);
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Monster.addEquippedType(builder, Equipment.Weapon);
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Monster.addEquipped(builder, weaps[1]);
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int orc = Monster.endMonster(builder);
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builder.finish(orc); // You could also call `Monster.finishMonsterBuffer(builder, orc);`.
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// We now have a FlatBuffer that can be stored on disk or sent over a network.
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// ...Code to store to disk or send over a network goes here...
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// Instead, we are going to access it right away, as if we just received it.
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ByteBuffer buf = builder.dataBuffer();
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// Get access to the root:
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Monster monster = Monster.getRootAsMonster(buf);
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// Note: We did not set the `mana` field explicitly, so we get back the default value.
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assert monster.mana() == (short)150;
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assert monster.hp() == (short)300;
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assert monster.name().equals("Orc");
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assert monster.color() == Color.Red;
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assert monster.pos().x() == 1.0f;
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assert monster.pos().y() == 2.0f;
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assert monster.pos().z() == 3.0f;
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// Get and test the `inventory` FlatBuffer `vector`.
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for (int i = 0; i < monster.inventoryLength(); i++) {
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assert monster.inventory(i) == (byte)i;
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}
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// Get and test the `weapons` FlatBuffer `vector` of `table`s.
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String[] expectedWeaponNames = {"Sword", "Axe"};
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int[] expectedWeaponDamages = {3, 5};
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for (int i = 0; i < monster.weaponsLength(); i++) {
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assert monster.weapons(i).name().equals(expectedWeaponNames[i]);
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assert monster.weapons(i).damage() == expectedWeaponDamages[i];
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}
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Weapon.Vector weaponsVector = monster.weaponsVector();
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for (int i = 0; i < weaponsVector.length(); i++) {
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assert weaponsVector.get(i).name().equals(expectedWeaponNames[i]);
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assert weaponsVector.get(i).damage() == expectedWeaponDamages[i];
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}
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// Get and test the `equipped` FlatBuffer `union`.
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assert monster.equippedType() == Equipment.Weapon;
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Weapon equipped = (Weapon)monster.equipped(new Weapon());
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assert equipped.name().equals("Axe");
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assert equipped.damage() == 5;
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System.out.println("The FlatBuffer was successfully created and verified!");
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}
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}
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