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一，游戏介绍

这是一个在线编写JS代码的游戏：http://play.elevatorsaga.com/

显示界面：

其中的doc是肯定要看的。

操作界面：

初始代码：

{
    init: function(elevators, floors) {
        var elevator = elevators[0]; // Let's use the first elevator

        // Whenever the elevator is idle (has no more queued destinations) ...
        elevator.on("idle", function() {
            // let's go to all the floors (or did we forget one?)
            elevator.goToFloor(0);
            elevator.goToFloor(1);
        });
    },
    update: function(dt, elevators, floors) {
        // We normally don't need to do anything here
    }
}

二，闯关

第1关

初始代码有提示：let’s go to all the floors (or did we forget one?)

本关代码：

{
    init: function(elevators, floors) {
        var elevator = elevators[0]; // Let's use the first elevator

        // Whenever the elevator is idle (has no more queued destinations) ...
        elevator.on("idle", function() {
            // let's go to all the floors (or did we forget one?)
            elevator.goToFloor(0);
            elevator.goToFloor(1);
            elevator.goToFloor(2);
        });
    },
    update: function(dt, elevators, floors) {
        // We normally don't need to do anything here
    }
}

第2关

{
    init: function(elevators, floors) {
        var elevator = elevators[0]; // Let's use the first elevator
        var floor = floors[0];
        
        // Whenever the elevator is idle (has no more queued destinations) ...
        elevator.on("idle", function() {
            //elevator.goToFloor(0);
        });
        elevator.on("floor_button_pressed", function(floorNum) {
            elevator.destinationQueue.push(floorNum);
            elevator.checkDestinationQueue();
        })

        floor.on("up_button_pressed", function() {
            elevator.destinationQueue.push(floor.floorNum());
            elevator.checkDestinationQueue();
        })
        floor.on("down_button_pressed", function() {
            elevator.destinationQueue.push(floor.floorNum());
            elevator.checkDestinationQueue();
        })
        
    },
    update: function(dt, elevators, floors) {
        // We normally don't need to do anything here
        var elevator = elevators[0]; // Let's use the first elevator
        for(var i=1;i<=4;i++){
            if(elevator.destinationQueue.indexOf(i)>-1){
                elevator.goToFloor(i);
            }
        }
        for(var i=4;i>0;i--){
            if(elevator.destinationQueue.indexOf(i)>-1){
                elevator.goToFloor(i);
            }
        }
    }
    
}

第2关我居然都没能通过，主要是JS不熟，加上API没太看懂。。。