/usr/share/zsh/functions/Misc/tetris is in zsh-common 5.1.1-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 | # Someone once accused zsh of not being as complete as Emacs, because it
# lacks Tetris and an adventure game.
#
# autoload -Uz tetris
# zle -N tetris
# bindkey '...' tetris
emulate -L zsh
tetris_hsz=11
tetris_vsz=20
typeset -ga tetris_shapes
tetris_shapes=(
0x0f00 0x4444 0x0f00 0x4444
0x4e00 0x4c40 0x0e40 0x4640
0x6600 0x6600 0x6600 0x6600
0x4620 0x6c00 0x4620 0x6c00
0x2640 0x6300 0x2640 0x6300
0x6440 0x8e00 0x44c0 0x0e20
0xc440 0x0e80 0x4460 0x2e00
)
typeset -gA tetris_rotations
tetris_rotations=(
0x0f00 0x4444 0x4444 0x0f00
0x4e00 0x4c40 0x4c40 0x0e40 0x0e40 0x4640 0x4640 0x4e00
0x6600 0x6600
0x4620 0x6c00 0x6c00 0x4620
0x2640 0x6300 0x6300 0x2640
0x6440 0x8e00 0x8e00 0x44c0 0x44c0 0x0e20 0x0e20 0x6440
0xc440 0x0e80 0x0e80 0x4460 0x4460 0x2e00 0x2e00 0xc440
)
tetris_blankline=
for ((tetris_i=tetris_hsz; tetris_i--; )); do
tetris_blankline="$tetris_blankline "
done
tetris_blankboard=
for ((tetris_i=tetris_vsz; tetris_i--; )); do
tetris_blankboard="$tetris_blankboard$tetris_blankline"
done
bindkey -N tetris
bindkey -R -M tetris '\000-\377' tetris-timeout
for ((tetris_i=256; tetris_i--; )); do
bindkey -M tetris 'T\'$(([##8]tetris_i)) tetris-timeout
done
bindkey -M tetris Ta tetris-left
bindkey -M tetris Tj tetris-left
bindkey -M tetris Ts tetris-rotate
bindkey -M tetris Tk tetris-rotate
bindkey -M tetris Td tetris-right
bindkey -M tetris Tl tetris-right
bindkey -M tetris 'T ' tetris-drop
bindkey -M tetris Tq tetris-quit
unset tetris_board tetris_score
zle -N tetris
function tetris {
emulate -L zsh
if ! zle; then
print -u2 "Use M-x tetris RET to play tetris."
return 2
fi
tetris_saved_state="BUFFER=${BUFFER:q};CURSOR=${CURSOR:q};MARK=${MARK:q};zle -K ${KEYMAP:q}"
tetris_speed=$((100.0/KEYTIMEOUT))
zle -K tetris
if [[ ${tetris_board+set} == set ]]; then
tetris-timeout
else
tetris_board=$tetris_blankboard
tetris_score=0
tetris-new-block
fi
}
function tetris-new-block {
emulate -L zsh
tetris_block=$tetris_shapes[1+RANDOM%$#tetris_shapes]
tetris_block_y=0
tetris_block_x=4
if ! tetris-block-fits; then
tetris-place-block "#"
tetris-render-screen
unset tetris_board tetris_score
tetris-quit
return
fi
tetris-place-block "*"
tetris-timed-move
}
zle -N tetris-left
function tetris-left {
emulate -L zsh
tetris-place-block " "
(( tetris_block_x-- ))
tetris-block-fits || (( tetris_block_x++ ))
tetris-place-block "*"
tetris-timeout
}
zle -N tetris-right
function tetris-right {
emulate -L zsh
tetris-place-block " "
(( tetris_block_x++ ))
tetris-block-fits || (( tetris_block_x-- ))
tetris-place-block "*"
tetris-timeout
}
zle -N tetris-rotate
function tetris-rotate {
emulate -L zsh
tetris-place-block " "
local save_block=$tetris_block
tetris_block=$tetris_rotations[$tetris_block]
tetris-block-fits || tetris_block=$save_block
tetris-place-block "*"
tetris-timeout
}
zle -N tetris-drop
function tetris-drop {
emulate -L zsh
tetris-place-block " "
((tetris_block_y++))
while tetris-block-fits; do
((tetris_block_y++))
done
((tetris_block_y--))
tetris-block-dropped
}
zle -N tetris-timeout
function tetris-timeout {
emulate -L zsh
tetris-place-block " "
((tetris_block_y++))
if tetris-block-fits; then
tetris-place-block "*"
tetris-timed-move
return
fi
((tetris_block_y--))
tetris-block-dropped
}
function tetris-block-dropped {
emulate -L zsh
tetris-place-block "O"
local fl=${tetris_blankline// /O} i=$((tetris_block_y*tetris_hsz)) y
for ((y=0; y!=4; y++)); do
if [[ $tetris_board[i+1,i+tetris_hsz] == $fl ]]; then
tetris_board[i+1,i+tetris_hsz]=
tetris_board=$tetris_blankline$tetris_board
((tetris_score++))
fi
((i += tetris_hsz))
done
tetris-new-block
}
function tetris-block-fits {
emulate -L zsh
local y x i=$((1+tetris_block_y*tetris_hsz+tetris_block_x)) b=0x8000
for ((y=0; y!=4; y++)); do
for ((x=0; x!=4; x++)); do
if ((tetris_block&b)); then
((x+tetris_block_x >= 0)) || return 1
((x+tetris_block_x < tetris_hsz)) || return 1
((y+tetris_block_y >= 0)) || return 1
((y+tetris_block_y < tetris_vsz)) || return 1
[[ $tetris_board[i] == " " ]] || return 1
fi
((b >>= 1))
((i++))
done
((i+=tetris_hsz-4))
done
return 0
}
function tetris-place-block {
emulate -L zsh
local y x i=$((1+tetris_block_y*tetris_hsz+tetris_block_x)) b=0x8000
for ((y=0; y!=4; y++)); do
for ((x=0; x!=4; x++)); do
((tetris_block&b)) && tetris_board[i]=$1
((b >>= 1))
((i++))
done
((i+=tetris_hsz-4))
done
}
function tetris-timed-move {
emulate -L zsh
tetris-render-screen
LBUFFER=
RBUFFER=$'\n'$tetris_screen
zle -R
zle -U T
}
function tetris-render-screen {
emulate -L zsh
setopt extendedglob
local s i extras
extras=(
"Score: $tetris_score"
""
"Game parameters: ${tetris_hsz}x$tetris_vsz, ${tetris_speed}Hz"
""
"Keys: left: a j"
" rotate: s k"
" right: d l"
" drop: space"
" quit: q"
)
for ((i=0; i!=tetris_vsz; i++)); do
s="$s|${${${${${tetris_board[1+i*tetris_hsz,(i+1)*tetris_hsz]}//O/()}//\*/**}// / }//\#/##}|"${extras[1]+ $extras[1]}$'\n'
extras[1]=()
done
s="$s+${tetris_blankline// /--}+"
tetris_screen=$s
}
zle -N tetris-quit
function tetris-quit {
emulate -L zsh
if [[ ! -o always_last_prompt ]]; then
BUFFER=
zle -M $tetris_screen
fi
eval $tetris_saved_state
if [[ -o always_last_prompt ]]; then
zle -M $tetris_screen
fi
}
tetris "$@"
|