View the Index
INDEX Symbols creating the fleet, 258–264 dropping the fleet, 267 + (addition), 26 reaching bottom of * (asterisk) operator, 147 screen, 276 {} (braces), 92, 105 rebuilding the fleet, 270 / (division), 26 bullets, 246–252 ** (double asterisk) operator, 149 collisions, with aliens, == (equality operator), 72–73 268–269, 291–292 ** (exponent), 26 deleting old, 250 // (floor division), 260 firing, 249 > (greater than), 75 limiting number of, 251 >= (greater than or equal to), 75 making larger, 270 # (hash mark), for comments, 29 settings, 247 != (inequality operator), 74 speeding up, 271 < (less than), 75 classes <= (less than or equal to), 75 Alien, 256–258 % (modulo operator), 116–117, 122 Bullet, 247–248 * (multiplication), 26 Button, 280–281 \n (newline), 22 GameStats, 273 ! (not), 74 Scoreboard, 288–289 += operator, 115 Settings, 231 [] (square brackets), 34 Ship, 233–235 - (subtraction), 26 ending the game, 276 \t (tab), 22 files alien_invasion.py, 229 A bullet.py, 247 addition (+), 26 button.py, 280 aliases, 152 game_stats.py, 273 alice.py, 197–199 scoreboard.py, 288 Alien Invasion project. See also settings.py, 231 Pygame ship.bmp, 233 aliens initializing dynamic checking edges, 266 settings, 286 collisions, with bullets, levels 268–269, 291–292 adding, 285–287 collisions, with ship, 272–275 modifying speed controlling fleet settings, 285 direction, 266 resetting the speed, 287 creating an alien, 256 planning, 228 Alien Invasion project, continued asterisk (*) operator, 147 Play button attributes, 159. See also classes: adding, 280–285
[Show full text]