BLOCKED
By David BohlkeRequires 8K
BLOCKED is a version of a popular arcade game for two players. Each player will control a cursor that moves on the screen in the four cardinal directions; leaving a trailing path as it progresses. The object of the game is to keep your cursor 'alive' by not running into one of the developed paths, or the pre-defined boundaries.
To begin, plug one joystick into paddle slot #1, and another stick into paddle slot #2. These will control the cursors on the left and right, respectively. You will also be able to select one of five speeds, using the stick on the left. The fastest speed requires sharp reactions to survive; while the slower speeds encourage a strategic battle.
Points will be awarded to the player who does not 'crash' his cursor. The point value varies directly with the length of the paths. A game is won when one player scores over 300 points. You may have to adjust the SETCOLOR commands to get the sharpest images on your video screen.
BLOCKED| 5-15 | directions for stick positions |
| 21-24 | change in plot points for different directions |
| 30-81 | initialization |
| A$ contains LEFT, RIGHT | |
| NG new game flag | |
| LS,RS left, right score | |
| L1,L2 left location | |
| R1,R2 right location | |
| 60-65 | select random vertical placement |
| 70 | check for end of game |
| 72 | if NG = 1 then continue game, else new game |
| 81-98 | input speed selection |
| 200-230 | controls left cursor |
| 200 | plot cursor |
| 205-210 | get direction change |
| 220 | ran into wall |
| 230 | plot new position, delay time loop, increment score |
| 400-490 | controls right cursor (same as left) |
| 600-610 | right wins |
| 700-710 | left wins |
| 900-940 | end of game message |
