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