1 11a5e2cf 2024-01-16 benni .\" $NetBSD: tetris.6,v 1.18 2023/07/01 10:51:35 nia Exp $
3 11a5e2cf 2024-01-16 benni .\" Copyright (c) 1992, 1993
4 11a5e2cf 2024-01-16 benni .\" The Regents of the University of California. All rights reserved.
6 11a5e2cf 2024-01-16 benni .\" This code is derived from software contributed to Berkeley by
7 11a5e2cf 2024-01-16 benni .\" Nancy L. Tinkham and Darren F. Provine.
9 11a5e2cf 2024-01-16 benni .\" Redistribution and use in source and binary forms, with or without
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11 11a5e2cf 2024-01-16 benni .\" are met:
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13 11a5e2cf 2024-01-16 benni .\" notice, this list of conditions and the following disclaimer.
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33 11a5e2cf 2024-01-16 benni .\" @(#)tetris.6 8.1 (Berkeley) 5/31/93
35 11a5e2cf 2024-01-16 benni .Dd July 1, 2023
36 11a5e2cf 2024-01-16 benni .Dt TETRIS 6
40 11a5e2cf 2024-01-16 benni .Nd the game of tetris
41 11a5e2cf 2024-01-16 benni .Sh SYNOPSIS
44 11a5e2cf 2024-01-16 benni .Op Fl k Ar keys
45 11a5e2cf 2024-01-16 benni .Op Fl l Ar level
46 11a5e2cf 2024-01-16 benni .Sh DESCRIPTION
49 11a5e2cf 2024-01-16 benni command is a display-based game.
50 11a5e2cf 2024-01-16 benni The object is to fit the shapes together forming complete rows,
51 11a5e2cf 2024-01-16 benni which then vanish.
52 11a5e2cf 2024-01-16 benni When the shapes fill up to the top, the game ends.
53 11a5e2cf 2024-01-16 benni You can optionally select a level of play, or custom-select control keys.
55 11a5e2cf 2024-01-16 benni The default level of play is 2.
57 11a5e2cf 2024-01-16 benni The default control keys are as follows:
59 11a5e2cf 2024-01-16 benni .Bl -tag -width "xxspacexx" -compact -offset indent
63 11a5e2cf 2024-01-16 benni rotate 1/4 turn counterclockwise
66 11a5e2cf 2024-01-16 benni .It Aq space
76 11a5e2cf 2024-01-16 benni The options are as follows:
77 11a5e2cf 2024-01-16 benni .Bl -tag -width indent
79 11a5e2cf 2024-01-16 benni By default, shapes are displayed colorfully if the user's CRT supports color.
82 11a5e2cf 2024-01-16 benni option can be used to restore the traditional black-and-white behavior.
84 2e032d40 2024-03-01 benni By default, the fallrate is staying constant.
85 2e032d40 2024-03-01 benni With this option, the fallrate increases over time.
87 11a5e2cf 2024-01-16 benni The default control keys can be changed using the
92 11a5e2cf 2024-01-16 benni argument must have the seven keys in order, and, remember to quote any
93 11a5e2cf 2024-01-16 benni space or tab characters from the shell.
94 11a5e2cf 2024-01-16 benni For example:
96 11a5e2cf 2024-01-16 benni .Dl "tetris -l 2 -k 'jkl pqn'"
98 11a5e2cf 2024-01-16 benni will play the default games, i.e. level 2 and with the default
99 11a5e2cf 2024-01-16 benni control keys.
100 11a5e2cf 2024-01-16 benni The current key settings are displayed at the bottom of the screen
101 11a5e2cf 2024-01-16 benni during play.
103 11a5e2cf 2024-01-16 benni Select a level of play.
105 11a5e2cf 2024-01-16 benni Display the top scores.
107 11a5e2cf 2024-01-16 benni Switch on previewing of the shape that will appear next.
110 11a5e2cf 2024-01-16 benni At the start of the game, a shape will appear at the top of the screen,
111 11a5e2cf 2024-01-16 benni falling one square at a time.
112 11a5e2cf 2024-01-16 benni The speed at which it falls is determined directly by the level:
113 11a5e2cf 2024-01-16 benni if you select level 2, the blocks will fall twice per second;
114 11a5e2cf 2024-01-16 benni at level 9, they fall 9 times per second.
115 11a5e2cf 2024-01-16 benni (As the game goes on, things speed up,
116 11a5e2cf 2024-01-16 benni no matter what your initial selection.)
117 11a5e2cf 2024-01-16 benni When this shape
118 11a5e2cf 2024-01-16 benni .Dq touches down
119 11a5e2cf 2024-01-16 benni on the bottom of the field, another will appear at the top.
121 11a5e2cf 2024-01-16 benni You can move shapes to the left or right, rotate them counterclockwise,
122 11a5e2cf 2024-01-16 benni or drop them to the bottom by pressing the appropriate keys.
123 11a5e2cf 2024-01-16 benni As you fit them together, completed horizontal rows vanish,
124 11a5e2cf 2024-01-16 benni and any blocks above fall down to fill in.
125 11a5e2cf 2024-01-16 benni When the blocks stack up to the top of the screen, the game is over.
126 11a5e2cf 2024-01-16 benni .Sh SCORING
127 11a5e2cf 2024-01-16 benni You get one point for every block you fit into the stack,
128 11a5e2cf 2024-01-16 benni and one point for every space a block falls when you hit the drop key.
129 11a5e2cf 2024-01-16 benni (Dropping the blocks is therefore a good way to increase your score.)
130 11a5e2cf 2024-01-16 benni Your total score is the product of the level of play
131 11a5e2cf 2024-01-16 benni and your accumulated
132 11a5e2cf 2024-01-16 benni .ie t points\(em200
133 11a5e2cf 2024-01-16 benni .el points -- 200
134 11a5e2cf 2024-01-16 benni points on level 3 gives you a score of 600.
135 11a5e2cf 2024-01-16 benni Each player gets at most one entry on any level,
136 11a5e2cf 2024-01-16 benni for a total of nine scores in the high scores file.
137 11a5e2cf 2024-01-16 benni Players who no longer have accounts are limited to one score.
138 11a5e2cf 2024-01-16 benni Also, scores over 5 years old are expired.
139 11a5e2cf 2024-01-16 benni The exception to these conditions is that the highest score on a given
141 11a5e2cf 2024-01-16 benni .Em always
143 11a5e2cf 2024-01-16 benni so that following generations can pay homage to those who have
144 11a5e2cf 2024-01-16 benni wasted serious amounts of time.
146 11a5e2cf 2024-01-16 benni The score list is produced at the end of the game.
147 11a5e2cf 2024-01-16 benni The printout includes each player's overall ranking,
148 11a5e2cf 2024-01-16 benni name, score, and how many points were scored on what level.
149 11a5e2cf 2024-01-16 benni Scores which are the highest on a given level
150 11a5e2cf 2024-01-16 benni are marked with asterisks
152 11a5e2cf 2024-01-16 benni .Sh ENVIRONMENT
154 11a5e2cf 2024-01-16 benni honors the informal standard
155 11a5e2cf 2024-01-16 benni .Dv NO_COLOR .
156 11a5e2cf 2024-01-16 benni When it is set in the environment, no color will be used.
158 11a5e2cf 2024-01-16 benni .Bl -tag -width /var/games/tetris.scoresxx
159 11a5e2cf 2024-01-16 benni .It /var/games/tetris.scores
160 11a5e2cf 2024-01-16 benni high score file
162 11a5e2cf 2024-01-16 benni .Sh AUTHORS
163 11a5e2cf 2024-01-16 benni .An -nosplit
164 11a5e2cf 2024-01-16 benni Adapted from a 1989 International Obfuscated C Code Contest winner by
165 11a5e2cf 2024-01-16 benni .An Chris Torek
167 11a5e2cf 2024-01-16 benni .An Darren F. Provine .
169 11a5e2cf 2024-01-16 benni Manual adapted from the original entry written by
170 11a5e2cf 2024-01-16 benni .An Nancy L. Tinkham
172 11a5e2cf 2024-01-16 benni .An Darren F. Provine .
174 11a5e2cf 2024-01-16 benni Code for previewing next shape added by
175 11a5e2cf 2024-01-16 benni .An Hubert Feyrer
178 11a5e2cf 2024-01-16 benni The higher levels are unplayable without a fast terminal connection.
