instructions.md

Note: This exercise is a continuation of the structs exercise.

In this exercise you'll be organizing races between various types of remote controlled cars. Each car has its own speed and battery drain characteristics.

Cars start with full (100%) batteries. Each time you drive the car using the remote control, it covers the car's speed in meters and decreases the remaining battery percentage by its battery drain.

If a car's battery is below its battery drain percentage, you can't drive the car anymore.

The remote controlled car has a fancy LED display that shows two bits of information:

• The total distance it has driven, displayed as: "Driven <METERS> meters".
• The remaining battery charge, displayed as: "Battery at <PERCENTAGE>%".

Each race track has its own distance. Cars are tested by checking if they can finish the track without running out of battery.

1. Drive the car

Implement the Drive method on the Car that updates the number of meters driven based on the car's speed, and reduces the battery according to the battery drainage:

speed := 5
batteryDrain := 2
car := NewCar(speed, batteryDrain)
car.Drive()
// Output: Car{speed: 5, batteryDrain: 2, battery: 98, distance: 5}

Note: If a car's battery is below its battery drain percentage, you can't drive the car anymore.

2. Display the distance driven

Implement a DisplayDistance method on Car to return the distance as displayed on the LED display:

speed := 5
batteryDrain := 2
car := NewCar(speed, batteryDrain)

car.DisplayDistance()
// Output: "Driven 0 meters"

3. Display the battery percentage

Implement the DisplayBattery method on Car to return the distance as displayed on the LED display:

speed := 5
batteryDrain := 2
car := NewCar(speed, batteryDrain)

car.DisplayBattery()
// Output: "Battery at 100%"

4. Check if a remote control car can finish a race

To finish a race, a car has to be able to drive the race's distance. This means not draining its battery before having crossed the finish line. Implement the CanFinish function that takes a Car and a Track instance as its parameter and returns true if the car can finish the race; otherwise, return false:

speed := 5
batteryDrain := 2
car := NewCar(speed, batteryDrain)

distance := 100
raceTrack := NewTrack(distance)

car.CanFinish(raceTrack)
// Output: true