since the player squirrelenemy squirrel and grass objects all have ' '' ''widthand 'heightkeysthe isoutsideactivearea(code can work with any type of those game objects if __name__ ='__main__' main(finallyafter all the functions have been definedthe program will run the main(function and start the game summary squirrel eat squirrel was our first game to have multiple enemies moving around the board at once the key to having several enemies was using dictionary value with identical keys for each enemy squirrelso that the same code could be run on each of them during an iteration through the game loop the concept of the camera was also introduced cameras weren' needed for our previous games because the entire game world fit onto one screen howeverwhen you make your own games that involve player moving around large game worldyou will need code to handle converting between the game world' coordinate system and the screen' pixel coordinate system finallythe mathematical sine function was introduced to give realistic squirrel hops (no matter how tall or long each hop wasyou don' need to know lot of math to do programming in most casesjust knowing additionmultiplicationand negative numbers is fine howeverif you study mathematicsyou'll often find several uses for math to make your games cooler for additional programming practiceyou can download buggy versions of squirrel eat squirrel from