Component Composition

Frent allows you to create entities which are a composition of unqiue components. Components can contain behavior and data.

Behavior using IComponent

You must implement one of many interfaces for component behavior, while any type can be a component. The first of these are IComponent and IComponent<T1, T2, ...> (up to T15).

IComponent represents a component that doesn't take any other components as an input but has an update method to be called every World.Update() - adding generic types adds component arguments to the Update function.

Example:

using World world = new World();

//Create three entities
for (int i = 0; i < 3; i++)
{
    world.Create<string, ConsoleTextWithColor>($"Hello, World! #{i + 1}", new(ConsoleColor.Blue));
}

//Update the three entities
world.Update();

struct ConsoleTextWithColor(ConsoleColor Color) : IComponent<string>
{
    //Get the string component of this entity.
    public void Update(ref string str)
    {
        Console.ForegroundColor = Color;
        Console.WriteLine(str);
    }
}

Output:

Hello World #1
Hello World #2
Hello World #3

Warning

A component type should only implement one Update method. For example, a component that implements IComponent<string> should not implement IEntityComponent<int>