package system

import (
	"github.com/yohamta/donburi/filter"
	"joylink.club/ecs"
	"joylink.club/rtsssimulation/components"
)

// 百分比设备系统
type PercentageSystem struct {
	query *ecs.Query
}

func NewPercentageSystem() *PercentageSystem {
	return &PercentageSystem{query: ecs.NewQuery(filter.Contains(components.PercentageDeviceComponent, components.PercentageDeviceOperatingComponent))}
}

// world 执行
func (me *PercentageSystem) Update(world ecs.World) {
	me.query.Each(world, func(e *ecs.Entry) {
		operation := components.PercentageDeviceOperatingComponent.Get(e)
		if operation.RemainingDistance <= 0 {
			operation.RemainingDistance = 0
			e.RemoveComponent(components.PercentageDeviceOperatingComponent)
		} else {
			operation.RemainingDistance -= int64(world.Tick())
			if operation.RemainingDistance < 0 {
				operation.RemainingDistance = 0
			}
		}
		//
		rateDevice := components.PercentageDeviceComponent.Get(e)
		if operation.ToH { //百分比变大
			rateDevice.Rate = int32(float64(100) * (float64(operation.InitDistance+operation.SumDistance-operation.RemainingDistance) / float64(operation.LhDistance)))
		} else {
			rateDevice.Rate = 100 - int32(float64(100)*(float64(operation.InitDistance+operation.SumDistance-operation.RemainingDistance)/float64(operation.LhDistance)))
		}
	})
}