'surfacethe pygame surface object that stores the image of the squirrel which will be drawn to the screen 'movexhow many pixels per frame the squirrel moves horizontally negative integer is moving to the lefta positive to the right 'moveyhow many pixels per frame the squirrel moves vertically negative integer is moving upa positive moving down 'widththe width of the squirrel' imagein pixels 'heightthe height of the squirrel' imagein pixels 'bouncerepresents at what point in bounce the player is in means standing (no bounce)up to bouncerate (the completion of the bounce 'bounceratehow quickly the squirrel bounces lower number means quicker bounce 'bounceheighthow high (in pixelsthe squirrel bounces grass data structure keys 'grassimagean integer that refers to the index of the pygame surface object in grassimages used for this grass object "" def main() global fpsclockdisplaysurfbasicfontl_squir_imgr_squir_imggrassimages pygame init( fpsclock pygame time clock( pygame display set_icon(pygame image load('gameicon png') displaysurf pygame display set_mode((winwidthwinheight) pygame display set_caption('squirrel eat squirrel' basicfont pygame font font('freesansbold ttf' load the image files l_squir_img pygame image load('squirrel png' r_squir_img pygame transform flip(l_squir_imgtruefalse grassimages [ for in range( ) grassimages append(pygame image load('grass% pngi) while true rungame( def rungame() set up variables for the start of new game invulnerablemode false if the player is invulnerable invulnerablestarttime time the player became invulnerable gameovermode false if the player has lost gameoverstarttime time the player lost