How do you repeat this blocks?

MIT App Inventor Help
1

blocks(1)
blocks(1)1114×302 30.7 KB

Reapeat this ...

2

Please help me i really need help :grimacing: :grimacing:

3

Not sure what you mean. Explain what you want to do

4

I want to reapeat:
set ball radius to ball radius - 1 15 times

5

blocks(3)
blocks(3)936×82 10.8 KB

6

You would use a clock timer, assuming you want be be able to see the animation of the ball reducing in size. Also you need to ensure that the ball has a radius of at least 15.

7

how can i use timer for reapeat this block?

8

Here is one way to do it:

image
image562×664 87.6 KB

9

thx

10

Sorry I have got another question ..
How can I say when ball 1 collided with middle of ball 2 do something .? :slightly_smiling_face:

11

Try this

reduceBall.aia (2.9 KB)

I added a 3rd ball with a radius of 1, same colour and coordinates as Ball2. Ball3 moves to the same position as Ball2 when Ball2 is dragged. The collision is now with ball3, which is at the centre of Ball2.

1 Like
12

Thank youuuu

13

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