snake/snake/snake.6

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  30 .\"     @(#)snake.6     8.1 (Berkeley) 5/31/93
  31 .\"
  32 .Dd May 31, 1993
  33 .Dt SNAKE 6
  34 .Os
  35 .Sh NAME
  36 .Nm snake ,
  37 .Nm snscore
  38 .Nd display chase game
  39 .Sh SYNOPSIS
  40 .Nm
  41 .Op Fl w Ar width
  42 .Op Fl l Ar length
  43 .Op Fl t
  44 .Nm snscore
  45 .Sh DESCRIPTION
  46 .Nm
  47 is a display-based game.
  48 The object of the game is to make as much money as possible without
  49 getting eaten by the snake.
  50 The
  51 .Fl l
  52 and
  53 .Fl w
  54 options allow you to specify the length and width of the field.
  55 By default the entire screen is used.
  56 The
  57 .Fl t
  58 option makes the game assume you are on a slow terminal.
  59 .Pp
  60 You are represented on the screen by an I.
  61 The snake is 6 squares long and is represented by s's with an S at its head.
  62 The money is $, and an exit is #.
  63 Your score is posted in the upper left hand corner.
  64 .Pp
  65 You can move around using the same conventions as
  66 .Xr vi 1 ,
  67 the
  68 .Ic h ,
  69 .Ic j ,
  70 .Ic k ,
  71 and
  72 .Ic l
  73 keys work, as do the arrow keys.
  74 Other possibilities include:
  75 .Bl -tag -width indent
  76 .It Ic sefc
  77 These keys are like hjkl but form a directed pad around the d key.
  78 .It Ic HJKL
  79 These keys move you all the way in the indicated direction to the
  80 same row or column as the money.
  81 This does
  82 .Em not
  83 let you jump away from the snake, but rather saves you from having
  84 to type a key repeatedly.
  85 The snake still gets all his turns.
  86 .It Ic SEFC
  87 Likewise for the upper case versions on the left.
  88 .It Ic ATPB
  89 These keys move you to the four edges of the screen.
  90 Their position on the keyboard is the mnemonic, e.g.
  91 P is at the far right of the keyboard.
  92 .It Ic x
  93 This lets you quit the game at any time.
  94 .It Ic p
  95 Points in a direction you might want to go.
  96 .It Ic w
  97 Space warp to get out of tight squeezes, at a price.
  98 .El
  99 .Pp
 100 To earn money, move to the same square the money is on.
 101 A new $ will appear when you earn the current one.
 102 As you get richer, the snake gets hungrier.
 103 To leave the game, move to the exit (#).
 104 .Pp
 105 A record is kept of the personal best score of each player.
 106 Scores are only counted if you leave at the exit,
 107 getting eaten by the snake is worth nothing.
 108 .Pp
 109 As in pinball, matching the last digit of your score to the number
 110 which appears after the game is worth a bonus.
 111 .Pp
 112 To see who wastes time playing snake, run
 113 .Nm snscore .
 114 .Sh FILES
 115 .Bl -tag -width /var/games/snakerawscores -compact
 116 .It Pa /var/games/snakerawscores
 117 database of personal bests
 118 .It Pa /var/games/snake.log
 119 log of games played
 120 .El
 121 .Sh BUGS
 122 When playing on a small screen,
 123 it's hard to tell when you hit the edge of the screen.
 124 .Pp
 125 The scoring function takes into account the size of the screen.
 126 A perfect function to do this equitably has not been devised.