Create a variable called “cursor_cost” that will contain the cost of the cursor. Be sure to initialize the variable to 15.

Use the keyword to create a variable at the top of your program. Then use the equals operator to set the variable to the value 15.

Allow the user to a cursor by clicking on the image when they have enough cookies. Remember that the user’s num_cookies should by the cursor_cost AND that the cursor_cost should increase by a factor of every time a cursor is purchased.

Add an addEventListener to the start function that will run a function called select_cursor. When select_cursor is executed, decrease num_cookies by cursor_cost and increase cursor_cost by multiplying by 1.2.

Make the picture of the cursor opaque when player doesn’t have enough cookies and solid when they do.

Create a function called that is run in . In hideShow, use getElementByID to change the of the div containing the picture of the cursor to 1 if “num_cookies” is to “cursor_cost. Otherwise, the div’s should be set to 0.2.

Show the number of cursors the user has purchased.

Create a variable called that will contain the number of cursors the user has bought. Be sure to initialize the variable to . You will need to increment this variable every time the user buys a cursor. Then, you will need to use getElementByID to update the text to show the content of “num_cursor”. Remember that you will need to use to ensure that decimal places are not shown to the user.

Keep track of the Cookies Per Second.

Create a global variable called that will contain the number of cookies per second. Be sure to initialize it to 0. You will need to increment the CPS variable by 0.1 every time a cursor is purchased. Remember that you will need to show the content of CPS by using getElementByID.

Increase the number of cookies by CPS every second.

You will need to increment num_cookies by in the update function. You need to divide by 10 since update is running every 100 milliseconds, which is 10 times per second.

Download a sound that will be played when a cursor is purchased.

You have several options: download a sound from a sound archive website, rip a sound effect off of youtube, download a library of sounds, or use the sounds I used here. Once a sound file is downloaded, you will need to create a folder called and place the files there. Refer to the video below to see how to complete each task.

Play a sound when a cursor is purchased.

You will need to create a global variable called and set it equal to the appropriate sound file using the Audio class along with a pathway to the file. To play the file, use the Audio class’ method at the appropriate time.