Transportation 'Trains and Railways' No.05: Train driving

When sitting in the driver's cart the player gains 'driving control' over the locomotive. The player can drive the train using the followings keys:
- 'Forwards' (W)
- 'Backwards' (S)
- 'Jump' key
- 'Sneak' key
- 'Sprint' key

Each 'forwards' (W) key press increases the speed. When the train is not moving, then the speed change is as follows:
- 1st key press: 1 bk/s
- 2nd key press: 2 bks/s
- 3rd key press: 4 bks/s
- All other key presses: +4 bks/s until the maximum speed is reached. Any more 'W' key presses do nothing.

Each 'backwards' (S) key press reduces the speed. When the train is driving, then the speed change is as follows:
- For every key press -4 bks/s until the speed of 4 bks/s
- Next key press: 2 bks/s
- Next key press: 1 bk/s
- Next key press: 0 bks/s (not moving)

When the train is not moving and the 'backwards' (S) key is pressed, then the train drives backwards.
The speed change per 'backwards' key press is the same as for the forward direction but backwards.

When the train drives backwards, the speed can be reduced with the 'forwards' key.

The 'jump' key is for the emergency stop. When pressed the train stops within a few blocks.
When driving at a speed of 16/24/32 bks/s, the train may stop within 2/3/4 blocks.

The 'sneak' key gradually alters the speed to 1 bk/s in the direction of driving.
The 'sprint' key gradually alters the speed to the maximum speed in the direction of driving.

When the train is not moving, then the 'sneak' and 'sprint' key do nothing.