marbles (tutorial) 110112 
  adding background 111 
  blurred_sphere movie clip 110, 111 
  duplicating sphere movie clip 111 
  focus3.fla 110, 111 
  set_blur function 111 
  sphere movie clip 110 
  t variable 112 
  u variable 112 
     Mars Patrol (tutorial) 132150 
  adding mountains 142 
  adding scrolling mesas 138140 
  adding vehicle bounce 147149 
  adding vehicle controls 143144 
  adding wheel rotation 145146 
  bounceFactor variable 149 
  checkKeys function 144, 145, 146, 149 
  code layer folder 136 
  friction variable 149 
  getSpeed method 146 
  graphics layer folder 133 
  ground movie clip 134 
  jump function 147, 148 
  jumpMove variable 149 
  makeLandscape function 139, 140, 143 
  marsPatrol_end.swf 133 
  marsPatrol_start.fla 133 
  mcs array 139 
  mesas movie clip 138 
  mountains movie clip 142 
  moveGround function 136, 137, 146 
  moveLandscape function 140, 141, 147 
  moveLeft and moveRight functions 144 
  positioning ground and sky on stage 134 
  rover movie clip 135 
  scrollSpeeds object 136, 139, 141, 142 
  seamlessly tiling ground movie clips 137 
  sky movie clip 134 
  speed variable 135, 145, 146 
  speedFactor variable 146 
  stageMiddle variable 145 
  stageWidth variable 145 
  wheelRotSpeed variable 135, 145