stage {
    backdrop White("gallery:General/White")
    let list = [  ];
    let yellow = 0;

    actor Labda {
        default costume Yellow("gallery:Objects/Ball Yellow")
        costume Green("gallery:Objects/Ball Green")
        costume Red("gallery:Objects/Ball Red")
        when cloned {
            this.setCostume(Math.randomBetween(1, 3));
            if(this.costumeId == 1) {
                yellow++;
            }
            this.setPosition(Math.randomBetween(-280, 230), Math.randomBetween(-120, 120));
            this.show();
            while(true) {
                if(list[this.cloneId]) {
                    this.goTo(Pointer);
                }
            }
        }
        when cloned {
            while(true) {
                if(this.touching(Coffer)) {
                    if(this.costumeId == 1) {
                        yellow--;
                        this.deleteClone();
                    }
                    else {
                        this.setPosition(Math.randomBetween(-280, 230), Math.randomBetween(-120, 120));
                        list[this.cloneId] = false;
                    }
                }
            }
        }
        when stage.started {
            this.hide();
            yellow = 0;
            list = [  ];
            list.push(false);
            for(let i = 1; i <= 15; i++) {
                createClone(this);
                list.push(false);
            }
        }
        when clicked {
            list[this.cloneId] = !list[this.cloneId];
        }
    }

    actor Coffer {
        costume Open("gallery:Objects/Coffer Open")
        costume Closed("gallery:Objects/Coffer Closed")
        when stage.started {
            this.setPosition(250, 120);
            while(true) {
                if(yellow == 0) {
                    this.setCostume(this.Closed);
                }
                else {
                    this.setCostume(this.Open);
                }
            }
        }
    }
}