package system

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

type PercentageDeviceSystem struct {
	query *ecs.Query
}

func NewPercentageDeviceSystem() *PercentageDeviceSystem {
	return &PercentageDeviceSystem{query: ecs.NewQuery(filter.Contains(components.PercentageDeviceStateComponent, components.MovableDeviceStateComponent))}
}

const (
	PercentageRateValueMax int64 = 100000
	PercentageRateValueMin int64 = 0
)
const (
	PercentageRateMax int8 = 100
	PercentageRateMin int8 = 0
)

// world 执行
func (me *PercentageDeviceSystem) Update(world ecs.World) {
	me.query.Each(world, func(e *ecs.Entry) {
		movable := components.MovableDeviceStateComponent.Get(e)
		if movable.Speed > 0 {
			percentage := components.PercentageDeviceStateComponent.Get(e)
			if movable.ToH {
				if movable.Position >= percentage.Target {
					movable.Speed = 0
					movable.Position = percentage.Target
				}
			} else {
				if movable.Position <= percentage.Target {
					movable.Speed = 0
					movable.Position = percentage.Target
				}
			}
			//
			percentage.Rate = movable.Position
		}

	})
}

// 映射百分比到大数值
func GetRateValue(rate int8) int64 {
	return int64(float64(float32(rate)/float32(100)) * float64(PercentageRateValueMax))
}

// 大数值映射到百分比
func GetRate(rateValue int64) int8 {
	return int8((float64(rateValue) / float64(PercentageRateValueMax)) * float64(100))
}

// 比率值变动速率计算
func CalculateRateSpeed(tick int32, lhDistance int64) int32 {
	return int32(float64(tick) * (float64(PercentageRateValueMax) / float64(lhDistance)))
}