@Tutorial(time: 5) { @Intro(title: "After having our code generated") { After generating the code from the previous section, we will know start creating our monster object. We will create a monster object called orc. } @Section(title: "Building your first buffer") { @ContentAndMedia {} @Steps { @Step { Starting with a new file, we will create our very first Flatbuffer. @Code(name: "ViewController.swift", file: "swift_code_1.swift") } @Step { First, we need to import ``FlatBuffers`` @Code(name: "ViewController.swift", file: "swift_code_2.swift") } @Step { We need to create an instance of the `FlatBufferBuilder`, which will contain the buffer as it grows. You can pass an initial size of the buffer (here 1024 bytes), which will grow automatically if needed. @Code(name: "ViewController.swift", file: "swift_code_3.swift") } @Step { After creating the builder, we can start serializing our data. Before we make our orc Monster, let's create some Weapons: a Sword and an Axe. However we will start by naming our weapons as `Sword` and `Axe` @Code(name: "ViewController.swift", file: "swift_code_4.swift") } @Step { After naming the weapons, we will create two weapon objects with the damage that the weapon is going to deal. That's done by calling the `start` Method on each table you will be creating, in this case its called `startWeapon` and finished by calling `end`. @Code(name: "ViewController.swift", file: "swift_code_5.swift") } @Step { We will take our (Sword and Axe) serialized data and serialize their offsets as a vector of tables into our `ByteBuffer`. So we can reference them later on from our Monster Object @Code(name: "ViewController.swift", file: "swift_code_6.swift") } @Step { We will add our Monster name as a string value just like we did with the weapons. @Code(name: "ViewController.swift", file: "swift_code_7.swift") } @Step { We will create a path that our monster should be using while roaming in its den. To create a vector of paths we would us `createVector(ofStructs: [])` which will take a Native `Swift` struct that has been padded to fit the `FlatBuffers` standards. There are usually two ways of creating vectors in `FlatBuffers` which you can see in commented out code. And thus there are multiple convenience methods that will cover all the bases when trying to create a vector so that you dont have to create it with `start` and `end` @Code(name: "ViewController.swift", file: "swift_code_8.swift") } @Step { Now to serialize our data into our `Monster` object. Which again there are two ways of doing, by calling the `create` method or by serializing the objects yourself. What we added to our Monster were the `Equipped Type` and the `Equipped` union itself, which allows the Monster to have the `Axe` as his equipped weapon. Important: Unlike structs, you should not nest tables or other objects, which is why we created all the `strings/vectors/tables` that this monster refers to before start. If you try to create any of them between start and end, you will get an `assert`. @Code(name: "ViewController.swift", file: "swift_code_9.swift") } @Step { Finally you can just finalize the buffer by calling `builder.finish` and get the Byte array from the buffer. @Code(name: "ViewController.swift", file: "swift_code_10.swift") } } } }