public static Vector2 Inside(this IRandomProvider random, Rect rect)
{
return(rect.position + new Vector2
(
x: random.Between(0f, rect.width),
y: random.Between(0f, rect.height)
));
}
protected override void ExecuteSubtask(int execID, int index)
{
Vector3 position = random.Inside(spawnArea);
Vector3 velocity = Vector3.forward * random.Between(10f, 15f);
var entity = context.CreateEntity();
context.SetComponent(entity, new TransformComponent(Float3x4.FromPosition(position)));
context.SetComponent(entity, new VelocityComponent(velocity: velocity));
context.SetComponent(entity, new GraphicComponent(graphicID: 0));
context.SetComponent(entity, new AgeComponent());
context.SetComponent(entity, new LifetimeComponent(totalLifetime: random.Between(30f, 35f)));
context.SetComponent(entity, new ColliderComponent(size: new Vector3(3, 2, 3)));
context.SetTag <SpaceshipTag>(entity);
}
public static T PickRandom <T>(this IRandomProvider random, IReadOnlyList <T> list)
{
if (list.Count == 0)
{
return(default(T));
}
int index = random.Between(0, list.Count);
return(list[index]);
}
public static int Between(this IRandomProvider random, int minValue, int maxValue)
{
return(Mathf.FloorToInt(random.Between((float)minValue, (float)maxValue)));
}