import { Label, Prefab, instantiate ,Node, math} from "cc";

import { Layout_UI_Notify } from "./Layout_UI_Notify";
import { aa } from "db://assets/scripts/aa";
import { GameUILayers } from "db://assets/scripts/GameUILayers";

class NotifyInfo {
    private static readonly time:number=2;
    private static readonly init_y:number=120;
    private static readonly up_y:number=80;//上升一格
    private static readonly move_speed:number=880;//向上移动速度
    private static readonly sc_state0:number=0.8;//变小大小
    private static readonly sc_state0_time:number=0.22;
    private static readonly sc_state1:number=1.2;//变大大小
    private static readonly sc_state1_time:number=0.41;
    private static readonly sc_state2:number=1;//正常大小

    private time:number;
    private node:Node;
    private state:number;
    private _state_time:number=0;
    public constructor(node:Node,parent:Node,txt:string){
       this.time=NotifyInfo.time;
       this.node=node;
       this.state=0;
       this._state_time=0;
       let label= node.getComponentInChildren(Label);
       label.string=txt;
       node.parent=parent;
       node.setPosition(0,NotifyInfo.init_y,0);
       node.setScale(NotifyInfo.sc_state0,NotifyInfo.sc_state0,NotifyInfo.sc_state0);
       node.active=true; 
    }
    public up():void{
       this.node.setPosition(this.node.position.x, this.node.position.y+NotifyInfo.up_y, this.node.position.z);
    }
    public run(dt:number):boolean{
       this.time-=dt;
       if(this.time<=0){
          this.node.destroy();
          this.node=null;
          return true;
       }else if(this.time<0.5){
          this.node.setPosition(this.node.position.x, this.node.position.y+NotifyInfo.move_speed*dt, this.node.position.z);
       }else {
          if(this.state===0){
               this._state_time+=dt;
               let ratio=this._state_time/NotifyInfo.sc_state0_time;
               if(ratio>=1){
                  this.state=1;
                  this._state_time=0;
                  this.node.setScale(NotifyInfo.sc_state1,NotifyInfo.sc_state1,NotifyInfo.sc_state1);
               }else{ 
                  let sc=math.lerp(NotifyInfo.sc_state0,NotifyInfo.sc_state1,ratio);
                  this.node.setScale(sc,sc,sc);
               }
          }else if(this.state===1){
            this._state_time+=dt;
            let ratio=this._state_time/NotifyInfo.sc_state1_time;
            if(ratio>=1){
               this.state=2;
               this._state_time=0;
               this.node.setScale(NotifyInfo.sc_state2,NotifyInfo.sc_state2,NotifyInfo.sc_state2);
            }else{ 
               let sc=math.lerp(NotifyInfo.sc_state1,NotifyInfo.sc_state2,ratio);
               this.node.setScale(sc,sc,sc);
            }
          }
       }
       return false;
    }
}
export class UI_Notify extends aa.UIcontroller {
    constructor() {
        super('ui/ui_notify/UI_Notify', GameUILayers.NOTICE, Layout_UI_Notify);
    }
    private _info_prefab:Prefab;
    private notifys:NotifyInfo[]=[];
    protected onCreated(): void {
        let layout = this.layout as Layout_UI_Notify;
        this._info_prefab=layout.info_prefab;
    }
    public newNotify(txt:string){
        let info = new NotifyInfo(instantiate(this._info_prefab),this.node,txt);
        for(var i=this.notifys.length-1;i>=0;i--)this.notifys[i].up();
        this.notifys.push(info);
   }
    protected onUpdate(dt?: number): void {
        for(var i=this.notifys.length-1;i>=0;i--)if(this.notifys[i].run(dt))this.notifys.splice(i,1);
    }
    dispose(): void {
        this._info_prefab=null;
    }
}