package coffee.liz.ecs

import kotlin.time.Duration

abstract class TickedSystem<Outside>(
    protected val tickRate: Duration,
    private var lastTick: Duration = Duration.ZERO
): System<Outside> {
    abstract fun update(world: World<Outside>, state: Outside, ticks: Int)

    override fun update(world: World<Outside>, state: Outside, deltaTime: Duration) {
        val ticks = ((deltaTime - lastTick) / tickRate).toInt()
        lastTick = if (ticks == 0) (lastTick + deltaTime).also {
            update(world, state, ticks)
        } else Duration.ZERO
    }
}