lighttroupe/luz-next

class ProjectEffectTimeFastForward < ProjectEffect
    title                'Time Fast Forward'
    description "Adds an amount to the rate at which time passes."

    hint "The default rate is 1.0, one engine second for each real-world second. A rate of 2.0 means twice as fast. If the rate drops below 0.0, engine time will run in reverse."

    setting 'amount', :float, :range => -100.0..100.0, :default => 0.0..100.0

    # TODO: this should use with_env() block when tick supports yield

    def pretick
        @previous_simulation_speed = $engine.simulation_speed
        $engine.simulation_speed = 1.0 + amount
    end

    def tick
        $engine.simulation_speed = @previous_simulation_speed
    end
end