1 /* 2 * Copyright 2015 Google Inc. All rights reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 // Run this file with the `java_sample.sh` script. 18 19 import MyGame.Sample.Color 20 import MyGame.Sample.Equipment 21 import MyGame.Sample.Monster 22 import MyGame.Sample.Vec3 23 import MyGame.Sample.Weapon 24 25 import com.google.flatbuffers.FlatBufferBuilder 26 27 class SampleBinary { 28 29 companion object { 30 // Example how to use FlatBuffers to create and read binary buffers. 31 @JvmStatic mainnull32 fun main(args: Array<String>) { 33 val builder = FlatBufferBuilder(0) 34 35 // Create some weapons for our Monster ('Sword' and 'Axe'). 36 val weaponOneName = builder.createString("Sword") 37 val weaponOneDamage: Short = 3 38 val weaponTwoName = builder.createString("Axe") 39 val weaponTwoDamage: Short = 5 40 41 // Use the `createWeapon()` helper function to create the weapons, since we set every field. 42 val weaps = IntArray(2) 43 weaps[0] = Weapon.createWeapon(builder, weaponOneName, weaponOneDamage) 44 weaps[1] = Weapon.createWeapon(builder, weaponTwoName, weaponTwoDamage) 45 46 // Serialize the FlatBuffer data. 47 val name = builder.createString("Orc") 48 val treasure = byteArrayOf(0, 1, 2, 3, 4, 5, 6, 7, 8, 9) 49 val inv = Monster.createInventoryVector(builder, treasure) 50 val weapons = Monster.createWeaponsVector(builder, weaps) 51 val pos = Vec3.createVec3(builder, 1.0f, 2.0f, 3.0f) 52 53 Monster.startMonster(builder) 54 Monster.addPos(builder, pos) 55 Monster.addName(builder, name) 56 Monster.addColor(builder, Color.Red) 57 Monster.addHp(builder, 300.toShort()) 58 Monster.addInventory(builder, inv) 59 Monster.addWeapons(builder, weapons) 60 Monster.addEquippedType(builder, Equipment.Weapon) 61 Monster.addEquipped(builder, weaps[1]) 62 val orc = Monster.endMonster(builder) 63 64 builder.finish(orc) // You could also call `Monster.finishMonsterBuffer(builder, orc);`. 65 66 // We now have a FlatBuffer that can be stored on disk or sent over a network. 67 68 // ...Code to store to disk or send over a network goes here... 69 70 // Instead, we are going to access it right away, as if we just received it. 71 72 val buf = builder.dataBuffer() 73 74 // Get access to the root: 75 val monster = Monster.getRootAsMonster(buf) 76 77 // Note: We did not set the `mana` field explicitly, so we get back the default value. 78 assert(monster.mana == 150.toShort()) 79 assert(monster.hp == 300.toShort()) 80 assert(monster.name.equals("Orc")) 81 assert(monster.color == Color.Red) 82 assert(monster.pos!!.x == 1.0f) 83 assert(monster.pos!!.y == 2.0f) 84 assert(monster.pos!!.z == 3.0f) 85 86 // Get and test the `inventory` FlatBuffer `vector`. 87 for (i in 0 until monster.inventoryLength) { 88 assert(monster.inventory(i) == i.toByte().toInt()) 89 } 90 91 // Get and test the `weapons` FlatBuffer `vector` of `table`s. 92 val expectedWeaponNames = arrayOf("Sword", "Axe") 93 val expectedWeaponDamages = intArrayOf(3, 5) 94 for (i in 0 until monster.weaponsLength) { 95 assert(monster.weapons(i)!!.name.equals(expectedWeaponNames[i])) 96 assert(monster.weapons(i)!!.damage.toInt() == expectedWeaponDamages[i]) 97 } 98 99 // Get and test the `equipped` FlatBuffer `union`. 100 assert(monster.equippedType == Equipment.Weapon) 101 val equipped = monster.equipped(Weapon()) as Weapon? 102 assert(equipped!!.name.equals("Axe")) 103 assert(equipped.damage == 5.toShort()) 104 105 println("The FlatBuffer was successfully created and verified!") 106 } 107 } 108 } 109