CSCI 261 - Programming Concepts (C++)

This assignment is due by Tuesday, December 05, 2017 11:59 PM.

The purpose of this assignment is to give you practice animating objects and interacting with them.

You will need to complete Lab9 before beginning this assignment.

We want to replace our single Bubble object with a vector of Bubble s. Before your draw loop, create a vector of five Bubbles. Give each Bubble a random starting position between 100 and 400 for X and Y and a random direction between 0.0 and 2.5 (think how to do this with rand() to get a range within a double value. We don't want the values to be 0, 1, 2. It should be possible for 0.7 or 1.3 or 2.4 to be the random value set). Additionally, give each Bubble a random radius between 10 and 50. Lastly, give each Bubble a random color so we can tell them apart.

Inside our draw loop, we now need to draw all the Bubbles in our vector. After our event handling, we'll then need to update the positions of all the Bubbles in our vector. You should now see five Bubbles bouncing around the window. Excellent. Let's have the user interact.

When the user clicks the left mouse button, we want to create a new Bubble at the location where the user clicked. This new Bubble should have the same starting properties that our original five Bubbles did. After the user clicks the first time, we should see six Bubbles moving around the window. A second click, seven Bubbles. And so forth as the user continues to click. (Hmm, how can we keep track of these new Bubbles?)

We may get to the point where there are too many Bubbles on the screen. If the user presses the 'd' or 'D' key, then we want to delete the last Bubble that was added to the window. Obviously if there are no Bubbles in the window, then pressing 'd' should do nothing.

If the user starts your program, clicks twice, then presses 'd' three times, we should be seeing four Bubbles on the screen.

Your submission will be graded according to the following rubric.

Always, always, ALWAYS update the header comments at the top of your main.cpp file. And if you ever get stuck, remember that there is LOTS of help available.

From your Cloud9 workspace, right click on the A9 folder in your workspace tree. Select "Download" from the pop-up menu. This will download a file called A9.zip to your computer. It contains all the files of your A89folder (therefore Lab9, Assignment9). Now in Canvas, go to Assignments > A9. Upload your A9.zip file you just downloaded. And voila! Easy peasy.

This assignment is due by Tuesday, December 05, 2017 11:59 PM.