/** @format */

import {ComRole} from '../components/ComRole'
import {ECSSystem} from '../lib/ECSSystem'
import {GenFilterKey} from '../lib/ECSComponent'
import {FightWorld} from '../worlds/FightWorld'
import {ComCocosNode} from '../components/ComCocosNode'
import {ComTransform} from '../components/ComTransform'
import {ComFrameAni} from '../components/ComFrameAni'
import {ComBullet} from '../components/ComBullet'

const FILTER_FRAME_ANI = GenFilterKey([ComFrameAni, ComTransform, ComCocosNode])

export class SysFrameAni extends ECSSystem {
    /** 连接 */
    public onAdd(world: FightWorld): void {}

    /** 断开连接 */
    public onRemove(world: FightWorld): void {}

    /** 添加实体 */
    public onEntityEnter(world: FightWorld, entity: number): void {}

    /**  */
    public onEntityLeave(world: FightWorld, entity: number): void {}

    /** 更新 */
    public onUpdate(world: FightWorld, dt: number): void {
        let filter = world.getFilter(FILTER_FRAME_ANI)
        //持续技能
        filter.walk((entity: number) => {
            let comCocosNode = world.getComponent(entity, ComCocosNode)
            if (!comCocosNode.loaded) return
            let comFrameAni = world.getComponent(entity, ComFrameAni)
            let targetRole = world.getComponent(comFrameAni.role, ComRole)
            let comTransform = world.getComponent(entity, ComTransform)
            if (!comFrameAni.dirty) return
            let removeFrameAniEntity = () => {
                //console.log('技能结束', entity)
                world.removeNodeEntity(entity)
            }
            if (comFrameAni.role && world.isDie(targetRole)) {
                removeFrameAniEntity()
                return
            }
            if (targetRole) {
                let targetComTransform = world.getComponent(comFrameAni.role, ComTransform)
                comTransform.x = targetComTransform.x + comFrameAni.aniConfig.offsetPos[1]
                let halfHeightScale = comFrameAni.aniConfig.offsetPos[0]
                if (halfHeightScale < 1) halfHeightScale = 1
                comTransform.y =
                    targetComTransform.y +
                    targetComTransform.halfHeight * (halfHeightScale - 1) +
                    comFrameAni.aniConfig.offsetPos[2]
            }

            let lineEndRole = world.getComponent(comFrameAni.lineEndEntity, ComRole)
            let lineEndBullet = world.getComponent(comFrameAni.lineEndEntity, ComBullet)
            if (!world.isDie(lineEndRole) || lineEndBullet) {
                let startPos
                if (comFrameAni.lineStartPos) {
                    startPos = comFrameAni.lineStartPos.clone()
                }
                let lineStartComTransform = world.getComponent(comFrameAni.lineStartEntity, ComTransform)
                let lineStartRole = world.getComponent(comFrameAni.lineStartEntity, ComRole)
                if (!world.isDie(lineStartRole) && lineStartComTransform) {
                    startPos = cc.v2(lineStartComTransform.x, lineStartComTransform.y)
                }
                let lineEndComTransform = world.getComponent(comFrameAni.lineEndEntity, ComTransform)
                if (startPos && lineEndComTransform) {
                    let endPos = cc.v2(
                        lineEndComTransform.x,
                        lineEndComTransform.y + (!world.isDie(lineEndRole) ? lineEndComTransform.halfHeight : 0),
                    )
                    comTransform.x = (startPos.x + endPos.x) / 2
                    comTransform.y = (startPos.y + endPos.y) / 2
                    let dirPosTmp = endPos.sub(startPos)
                    //弧度转角度
                    comCocosNode.node.angle = cc.misc.radiansToDegrees(Math.atan2(dirPosTmp.y, dirPosTmp.x))
                    comCocosNode.node.scaleX = dirPosTmp.mag() / comCocosNode.node.width
                }
            }
            //弹射子弹弹射途中目标死亡，子弹被移除，当前特效也要移除
            if (comFrameAni.lineEndEntity && !lineEndRole && !lineEndBullet) {
                removeFrameAniEntity()
            }
            comFrameAni.countDown -= dt
            if (comFrameAni.countDown <= 0) {
                removeFrameAniEntity()
            }
            return false
        })
    }
}