JETPACK(1) USER COMMANDS JETPACK(1) NAME jetpack - Arcade action game for X Windows SYNOPSIS jetpack DESCRIPTION jetpack is an arcade action game. The user controls a player wearing a jetpack. The game takes place within a series of levels that each consist of a maze , fuel pods , a door , and a key . The player must travel through the maze to find the key and bring it back to the door to exit to the next level. There is a bonus for each level that is decre- mented as time goes on. It is awarded when the player sucessfully exits the level. Movement The player can move left and right through space or walk along a horizontal maze wall. The player can also fire the jetpack, thrusting him upward. If the player is not stand- ing on a wall and not firing the jetpack, he will accelerate downward. The player cannot be damaged by falling. Firing the jetpack uses fuel. The player has a tank of fuel that can contain up to 1000 units of fuel. Picking up a fuel pod gives the player 100 units of fuel. Enemies There are three kinds of enemies in jetpack: guards , fire- balls , and wall sweepers . Touching any enemy is fatal, and enemies do not harm each other. Guards patrol the maze. They fly in the middle of the cor- ridors and follow random paths through the maze. Fireballs fly through space and bounce off walls. Wall Sweepers cling to walls and continuously move along the surface of the walls. They can hang on to any side, and when they reach the end of a wall, flip to hug the other side and continue in the opposite direction. Scoring The bonus for each level is proportional to the size of the level, how dense the maze is, and how many enemies and fuel pods are in it. In addition to the bonus, picking up a fuel pod is worth 100 points, and picking up the key is worth 500 points. Commands Q : Quit the current game. Sun Release 4.1 Last change: 23 February 1992 1 JETPACK(1) USER COMMANDS JETPACK(1) K : Commit suicide. (player loses a life and returns to the door) a, A, keypad 4 : Move left. Player will continue to move left until direction is changed. d, D, keypad 6 : Move right. Player will continue to move right until direction is changed. s, S, keypad 5 : Stop horizontal movement. left mouse button : Move left. Player will continue to move left until the button is released. right mouse button : Move right. Player will continue to move right until the button is released. center mouse button : Fire jetpack. Jetpack will continue to fire until the button is released. Miscellaneous The player starts each level from the door. When the player is standing within the door, he cannot be killed. The door is grey when the player is in it, otherwise it is white. The player is returned to the door each time he dies. If the player has the key when he dies, the key stays where the player was killed. Extra players are awarded every 10000 points. FILES lib/jetpack.scores - jetpack high scores lib/jetpack.lev000 - predefined demo level DIAGNOSTICS "Jetpack : Cannot connect to X Server " Jetpack can't open the display you wanted. Check the environment variable DISPLAY and make sure the host is authorized. "Jetpack : Couldn't load font." Jetpack was unable to load a needed font. Check to make sure your X server has the font loaded, or if necessary, recompile jetpack with a font that exists on your server. "Jetpack : Couldn't open scorefile." Jetpack couldn't open or create a high score file. Check to see if the jetpack lib directory is readable and writable, and if the score file already exists, that it is readable and writable. Sun Release 4.1 Last change: 23 February 1992 2 JETPACK(1) USER COMMANDS JETPACK(1) BUGS Jetpack does not use .Xauthority databases. Jetpack does not have any command line options. Jetpack has the ability to read in predefined levels, but only the demo level is provided. AUTHOR Copyright (c) 1992 Mark Bradley Sun Release 4.1 Last change: 23 February 1992 3