22b. Bubble Wrap
Random size circles all around the screen. Circles disappear when you click on them.
- A bunch of circles of random size and color are placed around the screen.
- When you click on a circle, it disappears.
- Only the top circle should disappear if multiple circles are stacked.
Model
First, think about one bubble. How will you represent that? You need to keep track of at least:
- center
- radius
- color
Next, think about all of the bubbles. How will you represent a bunch of bubbles?
Drawing
It is good to get your draw handler written early, so you can see what is going on. I recommend that you write one function to draw a single bubble on a background, and another function to draw all of the bubbles.
Logic
You need to remove the bubble you click on from the game. I think that is best done in two steps:
clicked-on-bubble?: bubble posn(click) -> boolean. True if the click is inside the given bubble.remove-clicked: list of bubbles posn(click) -> list of bubbles
Final Check
Make sure that only the top circle disappears when you click on an point that is contained in multiple circles. Write a check-expect to show that this happens!