1 Start by creating the racetrack backdrop.
Click on the
stage-background tap and draw the racetrack.
2 Draw the racing car
Now create your
racing car: you can draw an easy one
using just some coloured rectangles.
3 Set the starting position
Set the position
of the car to the starting point at
the beginning of the program, therefore each time the program stars, the car
will be ready to run the race!
Set x and y
coordinates to the desired location.
4 Move with the arrow keys
Lets make our
car move with the arrow keys on the keyboard:
Press the up/down arrow key and the car will move some steps forward/backward.
Or press the right/left arrow key and the car will turn some degrees to the right/left.
5. Watch out!
The car should not leave the
race-track: each time the car
touch the green area, it will be moved to the starting point.
6. Using a Variable to Keep Score
Now lets count
the number of complete trips around the race track:
The next step is
to create a variable which will keep
score of the number of laps.
Go to the Variables blocks.
Click on the Make a Variable button to display the New
Variable dialog box.
Type in the name
of the variable (Laps Score) and
click the OK button.
Your variable
will now be displayed on the stage, and some blocks will appear that you can
use with it.
Each time the car
reach the finish line (orange color), the Laps Score variable will be
increased by 1 and the car will go to its starting point.
Don’t forget to initialize
the variable to 0 at the beginning of the program, so it will be ready to start
counting from cero next time you play your game.
7. Time the game
What about adding a new variable to time the game?This timer variable will start at a given number of seconds (try 60) and then reduce by 1 every second.
When the number gets to zero, time’s up!😀😀
 |
| Game is over |
6. Some ideas
- Add a second car, so you can play
with a friend
- Decrease some points the laps score
whenever the green area is touched
- Add sound!
