74 lines
2.4 KiB
Factor
74 lines
2.4 KiB
Factor
! Copyright (C) 2015 Your name.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors arrays assocs byte-vectors formatting fry
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images images.loader kernel locals make math math.vectors
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opengl.textures sequences ;
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IN: snake-game.sprites
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: new-image-like ( image w h -- image )
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[ clone ] 2dip
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[ 2array >>dim ] 2keep *
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over bytes-per-pixel * <byte-vector> >>bitmap ;
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:: image-part ( image x y w h -- image )
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image w h new-image-like :> new-image
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h iota [| i |
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new-image bitmap>>
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x y i + w image pixel-row-slice-at
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append! drop
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] each new-image ;
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:: generate-sprite-sheet ( image rows cols -- seq )
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cols rows 2array :> split-dims
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image dim>> split-dims [ / ] 2map first2 :> ( sw sh )
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rows iota sh v*n :> ys
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cols iota sh v*n :> xs
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ys xs [
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swap [ image ] 2dip sw sh image-part
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] cartesian-map f join ;
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: load-sprite-image ( filename -- image )
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"vocab:snake-game/_resources/%s" sprintf load-image ;
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: make-texture ( image -- texture )
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{ 0 0 } <texture> ;
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: make-sprites ( filename cols rows -- seq )
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[ load-sprite-image ] 2dip generate-sprite-sheet
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[ make-texture ] map ;
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: snake-head-textures ( -- assoc )
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"head.png" 1 4 make-sprites
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{ "head-up" "head-right" "head-down" "head-left" }
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[ swap 2array ] 2map ;
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:: assoc-with-value-like ( assoc key seq -- )
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key assoc at :> value
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seq [ [ value ] dip assoc set-at ] each ;
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: snake-body-textures ( -- assoc )
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"body.png" 3 2 make-sprites
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{ 1 2 3 4 5 6 }
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[ swap 2array ] 2map
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dup 1 { "body-right-up" "body-down-left" } assoc-with-value-like
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dup 2 { "body-down-right" "body-left-up" } assoc-with-value-like
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dup 3 { "body-right-right" "body-left-left" } assoc-with-value-like
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dup 4 { "body-up-up" "body-down-down" } assoc-with-value-like
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dup 5 { "body-up-right" "body-left-down" } assoc-with-value-like
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dup 6 { "body-right-down" "body-up-left" } assoc-with-value-like
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dup [ { 1 2 3 4 5 6 } ] dip [ delete-at ] curry each ;
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: snake-tail-textures ( -- assoc )
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"tail.png" 2 2 make-sprites
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{ "tail-down" "tail-left" "tail-up" "tail-right" }
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[ swap 2array ] 2map ;
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: food-texture ( -- assoc )
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"food" "food.png" load-sprite-image make-texture
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2array 1array ;
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: background-texture ( -- assoc )
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"background" "background.png" load-sprite-image make-texture
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2array 1array ;
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