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snake-game: some cleanup.

factor-shell
John Benediktsson 2018-01-19 12:16:05 -08:00
parent b0b9524fcf
commit e0a93a6ea8
7 changed files with 119 additions and 175 deletions
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11
extra/snake-game/constants/constants.factor
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@ -1,11 +0,0 @@
! Copyright (C) 2015 Sankaranarayanan Viswanathan.
! See http://factorcode.org/license.txt for BSD license.
IN: snake-game.constants
SYMBOLS: :left :right :up :down ;
SYMBOLS: :head :body :tail ;
CONSTANT: snake-game-dim { 12 10 }
CONSTANT: snake-game-cell-size 20

107
extra/snake-game/game/game.factor
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@ -1,10 +1,16 @@
! Copyright (C) 2015 Sankaranarayanan Viswanathan.
! See http://factorcode.org/license.txt for BSD license.
USING: accessors arrays combinators kernel make math random
sequences sets snake-game.constants snake-game.util sorting ;
USING: accessors arrays assocs combinators fry kernel make math
math.vectors random sequences sets sorting ;
IN: snake-game.game
SYMBOLS: :left :right :up :down ;
SYMBOLS: :head :body :tail ;
CONSTANT: snake-game-dim { 12 10 }
TUPLE: snake-game
snake snake-loc snake-dir food-loc
{ next-turn-dir initial: f }
@ -26,10 +32,33 @@ C: <snake-part> snake-part
: <snake-game> ( -- snake-game )
snake-game new
<snake> >>snake
{ 5 4 } clone >>snake-loc
:right >>snake-dir
{ 1 1 } clone >>food-loc ;
<snake> >>snake
{ 5 4 } clone >>snake-loc
:right >>snake-dir
{ 1 1 } clone >>food-loc ;
: ?roll-over ( x max -- x )
{
{ [ 2dup >= ] [ 2drop 0 ] }
{ [ over neg? ] [ nip 1 - ] }
[ drop ]
} cond ;
: move-loc ( loc dir -- loc )
H{
{ :left { -1 0 } }
{ :right { 1 0 } }
{ :up { 0 -1 } }
{ :down { 0 1 } }
} at v+ snake-game-dim [ ?roll-over ] 2map ;
: opposite-dir ( dir -- dir )
H{
{ :left :right }
{ :right :left }
{ :up :down }
{ :down :up }
} at ;
: game-loc>index ( loc -- n )
first2 snake-game-dim first * + ;
@ -37,22 +66,19 @@ C: <snake-part> snake-part
: index>game-loc ( n -- loc )
snake-game-dim first /mod swap 2array ;
: snake-shape ( snake -- dirs )
[ dir>> ] map ;
: grow-snake ( snake dir -- snake )
opposite-dir :head <snake-part> prefix
dup second :body >>type drop ;
: move-snake ( snake dir -- snake )
dupd [ snake-shape but-last ] dip
[ dup but-last [ dir>> ] map ] dip
opposite-dir prefix [ >>dir ] 2map ;
: all-indices ( -- points )
snake-game-dim first2 * <iota> ;
snake-game-dim product <iota> ;
: snake-occupied-locs ( snake head-loc -- points )
[ dir>> relative-loc ] accumulate nip ;
[ dir>> move-loc ] accumulate nip ;
: snake-occupied-indices ( snake head-loc -- points )
snake-occupied-locs [ game-loc>index ] map natural-sort ;
@ -60,30 +86,23 @@ C: <snake-part> snake-part
: snake-unoccupied-indices ( snake head-loc -- points )
[ all-indices ] 2dip snake-occupied-indices without ;
: snake-will-eat-food? ( snake-game dir -- ? )
[ [ food-loc>> ] [ snake-loc>> ] bi ] dip
relative-loc = ;
: snake-will-eat-food? ( snake-game -- ? )
[ food-loc>> ] [ snake-loc>> ] [ snake-dir>> ] tri move-loc = ;
: update-score ( snake-game -- )
[ 1 + ] change-score
drop ;
: increase-score ( snake-game -- snake-game )
[ 1 + ] change-score ;
: update-snake-shape ( snake-game dir growing? -- )
[ [ grow-snake ] curry change-snake ]
[ [ move-snake ] curry change-snake ]
if drop ;
: update-snake-shape ( snake-game growing? -- snake-game )
[ dup snake-dir>> ] dip
'[ _ _ [ grow-snake ] [ move-snake ] if ] change-snake ;
: update-snake-loc ( snake-game dir -- )
[ relative-loc ] curry change-snake-loc drop ;
: update-snake-loc ( snake-game -- snake-game )
dup snake-dir>> '[ _ move-loc ] change-snake-loc ;
: update-snake-dir ( snake-game dir -- )
>>snake-dir drop ;
: generate-food ( snake-game -- )
[
[ snake>> ] [ snake-loc>> ] bi
snake-unoccupied-indices random index>game-loc
] keep food-loc<< ;
: generate-food ( snake-game -- snake-game )
dup [ snake>> ] [ snake-loc>> ] bi
snake-unoccupied-indices random index>game-loc
>>food-loc ;
: game-in-progress? ( snake-game -- ? )
[ game-over?>> ] [ paused?>> ] bi or not ;
@ -94,28 +113,24 @@ C: <snake-part> snake-part
f >>next-turn-dir
] when* drop ;
: snake-will-eat-itself? ( snake-game dir -- ? )
[ [ snake>> ] [ snake-loc>> ] bi ] dip relative-loc
[ snake-occupied-locs rest ] keep
swap member? ;
: snake-will-eat-itself? ( snake-game -- ? )
[ snake>> ] [ snake-loc>> ] [ snake-dir>> ] tri move-loc
[ snake-occupied-locs rest ] keep swap member? ;
: game-over ( snake-game -- )
t >>game-over? drop ;
: update-snake ( snake-game dir -- )
2dup snake-will-eat-food?
{
[ [ drop update-score ] [ 2drop ] if ]
: update-snake ( snake-game -- )
dup snake-will-eat-food? {
[ [ increase-score ] when ]
[ update-snake-shape ]
[ drop update-snake-loc ]
[ drop update-snake-dir ]
[ nip [ generate-food ] [ drop ] if ]
} 3cleave ;
[ [ generate-food ] when ]
} cleave drop ;
: do-game-step ( snake-game -- )
dup game-in-progress? [
dup ?handle-pending-turn
dup snake-dir>>
2dup snake-will-eat-itself?
[ drop game-over ] [ update-snake ] if
dup snake-will-eat-itself?
[ game-over ] [ update-snake ] if
] [ drop ] if ;

21
extra/snake-game/input/input.factor
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@ -1,21 +0,0 @@
! Copyright (C) 2015 Sankaranarayanan Viswanathan.
! See http://factorcode.org/license.txt for BSD license.
USING: assocs sets snake-game.constants ;
IN: snake-game.input
: key-action ( key -- action )
H{
{ "RIGHT" :right }
{ "LEFT" :left }
{ "UP" :up }
{ "DOWN" :down }
} at ;
: quit-key? ( key -- ? )
HS{ "ESC" "q" "Q" } in? ;
: pause-key? ( key -- ? )
HS{ " " "SPACE" "p" "P" } in? ;
: new-game-key? ( key -- ? )
HS{ "ENTER" "RET" "n" "N" } in? ;

2
extra/snake-game/snake-game.factor
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@ -4,7 +4,7 @@ USING: accessors sets snake-game.ui ui ui.gadgets.status-bar ui.gadgets.worlds ;
IN: snake-game
: <snake-world-attributes> ( -- world-attributes )
<world-attributes> "Snake Game" >>title
<world-attributes> "Snake Game" >>title
[
{ maximize-button resize-handles } without
] change-window-controls ;

47
extra/snake-game/sprites/sprites.factor
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@ -28,46 +28,37 @@ IN: snake-game.sprites
swap [ image ] 2dip sw sh image-part
] cartesian-map f join ;
: load-sprite-image ( filename -- image )
: load-snake-image ( filename -- image )
"vocab:snake-game/_resources/%s" sprintf load-image ;
: make-texture ( image -- texture )
{ 0 0 } <texture> ;
: load-snake-texture ( file-name -- texture )
load-snake-image { 0 0 } <texture> ;
: make-sprites ( filename cols rows -- seq )
[ load-sprite-image ] 2dip generate-sprite-sheet
[ make-texture ] map ;
: load-sprite-textures ( filename cols rows -- seq )
[ load-snake-image ] 2dip generate-sprite-sheet
[ { 0 0 } <texture> ] map ;
: snake-head-textures ( -- assoc )
"head.png" 1 4 make-sprites
{ "head-up" "head-right" "head-down" "head-left" }
[ swap 2array ] 2map ;
:: assoc-with-value-like ( assoc key seq -- )
key assoc at :> value
seq [ [ value ] dip assoc set-at ] each ;
"head.png" 1 4 load-sprite-textures zip ;
: snake-body-textures ( -- assoc )
"body.png" 3 2 make-sprites
{ 1 2 3 4 5 6 }
[ swap 2array ] 2map
dup 1 { "body-right-up" "body-down-left" } assoc-with-value-like
dup 2 { "body-down-right" "body-left-up" } assoc-with-value-like
dup 3 { "body-right-right" "body-left-left" } assoc-with-value-like
dup 4 { "body-up-up" "body-down-down" } assoc-with-value-like
dup 5 { "body-up-right" "body-left-down" } assoc-with-value-like
dup 6 { "body-right-down" "body-up-left" } assoc-with-value-like
dup [ { 1 2 3 4 5 6 } ] dip [ delete-at ] curry each ;
{
"body-right-up" "body-down-right" "body-right-right"
"body-up-up" "body-up-right" "body-right-down"
}
{
"body-down-left" "body-left-up" "body-left-left"
"body-down-down" "body-left-down" "body-up-left"
}
"body.png" 3 2 load-sprite-textures '[ _ zip ] bi@ append ;
: snake-tail-textures ( -- assoc )
"tail.png" 2 2 make-sprites
{ "tail-down" "tail-left" "tail-up" "tail-right" }
[ swap 2array ] 2map ;
"tail.png" 2 2 load-sprite-textures zip ;
: food-texture ( -- assoc )
"food" "food.png" load-sprite-image make-texture
2array 1array ;
"food" "food.png" load-snake-texture 2array 1array ;
: background-texture ( -- assoc )
"background" "background.png" load-sprite-image make-texture
2array 1array ;
"background" "background.png" load-snake-texture 2array 1array ;

61
extra/snake-game/ui/ui.factor
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@ -1,13 +1,10 @@
! Copyright (C) 2015 Sankaranarayanan Viswanathan.
! See http://factorcode.org/license.txt for BSD license.
USING: accessors arrays assocs calendar combinators destructors
formatting kernel make math namespaces opengl opengl.textures
sequences sets snake-game.constants snake-game.game
snake-game.input snake-game.util snake-game.sprites timers
ui ui.gadgets ui.gadgets.worlds ui.gestures ui.render ;
FROM: snake-game.util => screen-loc ;
FROM: snake-game.util => relative-loc ;
formatting kernel make math math.vectors namespaces opengl
opengl.textures sequences sets snake-game.game
snake-game.sprites timers ui ui.gadgets ui.gadgets.worlds
ui.gestures ui.render ;
IN: snake-game.ui
@ -20,8 +17,12 @@ TUPLE: snake-gadget < gadget
<snake-game> >>snake-game drop ;
: <snake-gadget> ( -- snake-gadget )
snake-gadget new
[ start-new-game ] keep ;
snake-gadget new [ start-new-game ] keep ;
CONSTANT: snake-game-cell-size 20
: game-loc>screen-loc ( loc -- loc )
[ snake-game-cell-size * ] map ;
: lookup-texture ( key -- texture )
game-textures get at ;
@ -30,7 +31,7 @@ TUPLE: snake-gadget < gadget
[ lookup-texture draw-texture ] with-translation ;
: draw-sprite ( grid-loc key -- )
swap screen-loc draw-sprite* ;
swap game-loc>screen-loc draw-sprite* ;
: draw-food ( loc -- )
"food" draw-sprite ;
@ -39,17 +40,15 @@ TUPLE: snake-gadget < gadget
{ 0 0 } "background" draw-sprite ;
: draw-snake-head ( loc facing-dir -- )
dup name>> rest "head-" prepend
[
[ screen-loc ] dip
dup name>> rest "head-" prepend [
[ game-loc>screen-loc ] dip
{
{ :right [ { -20 -10 } ] }
{ :down [ { -10 -20 } ] }
{ :up [ { -10 0 } ] }
{ :left [ { 0 -10 } ] }
} case offset
] dip
swap draw-sprite* ;
} case v+
] dip swap draw-sprite* ;
: draw-snake-body ( loc from-dir to-dir -- )
[ name>> rest ] bi@ "body-%s-%s" sprintf draw-sprite ;
@ -65,7 +64,7 @@ TUPLE: snake-gadget < gadget
} case ;
: next-snake-loc-from-dir ( loc from-dir snake-part -- new-loc new-from-dir )
nip dir>> [ relative-loc ] keep ;
nip dir>> [ move-loc ] keep ;
: draw-snake ( loc from-dir snake -- )
3dup [
@ -76,16 +75,15 @@ TUPLE: snake-gadget < gadget
first draw-snake-part ;
: generate-status-message ( snake-game -- str )
[ score>> "Score: %d" sprintf ]
[ score>> ]
[
{
{ [ dup game-over?>> ] [ drop "Game Over" ] }
{ [ dup paused?>> ] [ drop "Game Paused" ] }
[ drop "Game In Progress" ]
} cond
]
bi 2array " -- " join ;
] bi "Score: %d -- %s" sprintf ;
: update-status ( gadget -- )
[ snake-game>> generate-status-message ] keep show-status ;
@ -98,6 +96,23 @@ TUPLE: snake-gadget < gadget
: toggle-game-pause ( snake-gadget -- )
snake-game>> [ not ] change-paused? drop ;
: key-action ( key -- action )
H{
{ "RIGHT" :right }
{ "LEFT" :left }
{ "UP" :up }
{ "DOWN" :down }
} at ;
: quit-key? ( key -- ? )
HS{ "ESC" "q" "Q" } in? ;
: pause-key? ( key -- ? )
HS{ " " "SPACE" "p" "P" } in? ;
: new-game-key? ( key -- ? )
HS{ "ENTER" "RET" "n" "N" } in? ;
: ?handle-movement-key ( snake-game key -- )
key-action
[
@ -133,8 +148,8 @@ M: snake-gadget graft*
M: snake-gadget ungraft*
[ stop-timer f ] change-timer
dup textures>> values [ dispose ] each
f >>textures drop ;
[ values dispose-each f ] change-textures
drop ;
M: snake-gadget pref-dim*
drop snake-game-dim [ snake-game-cell-size * 20 + ] map ;

45
extra/snake-game/util/util.factor
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@ -1,45 +0,0 @@
! Copyright (C) 2015 Sankaranarayanan Viswanathan.
! See http://factorcode.org/license.txt for BSD license.
USING: arrays assocs combinators kernel math sequences
snake-game.constants ;
IN: snake-game.util
: screen-loc ( loc -- loc )
[ snake-game-cell-size * ] map ;
: offset ( loc dim -- loc )
[ + ] 2map ;
: ?roll-over ( x max -- x )
{
{ [ 2dup >= ] [ 2drop 0 ] }
{ [ over neg? ] [ nip 1 - ] }
[ drop ]
} cond ;
: ?roll-over-x ( x -- x )
snake-game-dim first ?roll-over ;
: ?roll-over-y ( y -- y )
snake-game-dim second ?roll-over ;
: move ( loc dim -- loc )
offset first2
[ ?roll-over-x ] [ ?roll-over-y ] bi* 2array ;
: relative-loc ( loc dir -- loc )
{
{ :left [ { -1 0 } move ] }
{ :right [ { 1 0 } move ] }
{ :up [ { 0 -1 } move ] }
{ :down [ { 0 1 } move ] }
} case ;
: opposite-dir ( dir -- dir )
H{
{ :left :right }
{ :right :left }
{ :up :down }
{ :down :up }
} at ;