andygeiss/ecs

package ecs

// System implements the behaviour of an entity by modifying the state,
// which is stored in each component of the entity.
type System interface {
    // Setup is called once before the first call to Process.
    // It is used to initialize the state of the system.
    Setup()
    // Process is called for each entity in the system.
    // It is used to modify the state of the entity.
    Process(entityManager EntityManager) (state int)
    // Teardown is called once after the last call to Process.
    // It is used to clean up the state of the system.
    Teardown()
}