View current direction

[karlstahre]

User story

As an application car driver I want to be able to see in which direction the car is driving on my smartphone screen so that the driver of the car knows in which direction the car will drive when standing still.

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Acceptance criteria

• The application car driver must be able to view the current direction of the car at all times. The direction of the car can only be changed by input of the application car driver.
• If the car hits an obstacle, the car will change the direction of the car to “backward”.

[MajaLinder]

• [x] Implement arrow buttons depressed
• [x] Only one of the forward and backward arrow buttons can be activated at a time
• [x] Only one of the left and right arrow buttons can be activated at a time

[MajaLinder]

• [ ] When the car stands still the arrow buttons get deactivated
• [x] Only one arrow button can be activated at a time

[karlstahre]

• [x] Do not store previous mode settings after a reset
• [x] Make pressing the forward arrow after a brake be sufficient to start the car going forward again

[karlstahre]

• [x] Code refactoring