Created update script in 'load-credits'
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parent
afef0fd480
commit
2870a88536
1 changed files with 82 additions and 62 deletions
144
game.scm
144
game.scm
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@ -227,14 +227,6 @@
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(set! *level* ((vector-ref levels idx) (collected-gem? idx)))
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(update-objects!)))
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(define (load-credits!)
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(replace-game-state! 'credits)
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(set! *actormap* (make-whactormap))
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(clear-snapshots!)
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(set! *credits-top* credits-start)
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(with-goblins
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(set! *level* (load-credits #f))
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(update-objects!)))
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(define (load-level! idx)
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;; TODO: Maybe show a little achievement popup when all gems
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@ -402,55 +394,46 @@
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;; Credits
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(define credits-margin 40.0) ;; pixels
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(define credits-speed 30.0) ;; frames per line (inverse speed)
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(define credits-pace 30.0) ;; frames per line (inverse speed)
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(define credits-start (+ game-height (* 0.75 tile-height)))
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(define credits-end (* 0.75 tile-height))
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(define *credits-top* credits-start)
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(define _line-height #f)
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(define (line-height)
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(unless _line-height
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(set-font! context "normal 16px monogram")
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(let ((metrics (measure-text context "Aj")))
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(set! _line-height
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(* (+ (text-metrics-actual-bounding-box-ascent metrics)
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(text-metrics-actual-bounding-box-descent metrics))
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1.2))))
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_line-height)
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(define line-height
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(let ((lh #f))
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(lambda ()
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(unless lh
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(set-font! context "normal 16px monogram")
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(let ((metrics (measure-text context "Aj")))
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(set! lh
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(* (+ (text-metrics-actual-bounding-box-ascent metrics)
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(text-metrics-actual-bounding-box-descent metrics))
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1.2))))
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lh)))
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(define-record-type <credit>
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(_make-credit height draw)
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(_make-credit lines draw)
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credit?
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(height credit-height)
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(lines credit-lines)
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(draw credit-draw))
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(define* (make-credit #:key height draw)
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(_make-credit height draw))
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(define* (make-credit #:key (lines 1)
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(draw (lambda (y) #f)))
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(_make-credit lines draw))
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(define* (make-credit-group #:rest credits)
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(make-credit
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#:height (fold (lambda (c prev)
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(+ prev (credit-height c)))
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0 credits)
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#:lines (fold (lambda (c lines)
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(+ lines (credit-lines c)))
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0 credits)
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#:draw
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(lambda (top)
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(do ((i 0 (1+ i))
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(y top (+ y (* (credit-height (list-ref credits i))
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(line-height)))))
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((= i (length credits)))
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((credit-draw (list-ref credits i)) y)))))
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(define* (make-credit-space #:optional (lines 1))
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(make-credit
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#:height lines
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#:draw (lambda (y) #f)))
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(fold (lambda (c y)
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((credit-draw c) y)
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(+ y (* (credit-lines c) (line-height))))
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top credits))))
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(define (make-credit-text text)
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(make-credit
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#:height 1
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#:draw
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(lambda (y)
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(set-fill-color! context "#fff")
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@ -462,8 +445,7 @@
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(define (make-credit-underline text)
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(make-credit-group
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(make-credit-text text)
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(make-credit-text (make-string (string-length text)
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#\-))))
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(make-credit-text (make-string (string-length text) #\-))))
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(define credits
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(vector (make-credit-group
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@ -472,8 +454,7 @@
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(make-credit-group
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(make-credit-text "Cirkoban was made by the")
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(make-credit-text "Spritely Institute"))
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(make-credit-group
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(make-credit-text "https://spritely.institute"))
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(make-credit-text "https://spritely.institute")
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(make-credit-group
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(make-credit-underline "Game Design")
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(make-credit-text "Christine Lemmer-Webber"))
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@ -497,27 +478,66 @@
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(make-credit-group
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(make-credit-underline "Other")
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(make-credit-text "monogram font by datagoblin"))
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(make-credit-space 4)
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(make-credit #:lines 4)
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(make-credit-text "Thank you for playing!")))
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(define-record-type <credits-state>
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(make-credits-state top first-visible-index)
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credits-state?
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(top credits-state-top set-credits-state-top!)
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(first-visible-index
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credits-state-first-visible-index
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set-credits-state-first-visible-index!))
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(define *credits* (make-credits-state credits-start 0))
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(define (credits-top)
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(credits-state-top *credits*))
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(define (credits-first-visible-index)
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(credits-state-first-visible-index *credits*))
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(define (set-credits-top! top)
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(set-credits-state-top! *credits* top))
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(define (set-credits-first-visible-index! index)
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(set-credits-state-first-visible-index! *credits* index))
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(define (credit-height credit)
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(+ (* (credit-lines credit) (line-height))
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credits-margin))
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(define (draw-credits)
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(draw-level)
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(let ((height (lambda (c)
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(+ (* (credit-height c) (line-height))
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credits-margin)))
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(i 0)
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(y *credits-top*))
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;; Ignore credits that are higher than the top of the game
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(while (and (< i (vector-length credits))
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(< y (- (height (vector-ref credits i))) credits-end))
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(set! y (+ y (height (vector-ref credits i))))
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(set! i (1+ i)))
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;; Draw credits that are higher than the bottom of the game
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(while (and (< i (vector-length credits)) (<= y credits-start))
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((credit-draw (vector-ref credits i)) y)
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(set! y (+ y (height (vector-ref credits i))))
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(set! i (1+ i))))
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(set! *credits-top* (- *credits-top* (/ (line-height) credits-speed))))
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(let lp ((i (credits-first-visible-index))
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(y (credits-top)))
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(when (and (< i (vector-length credits))
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(<= y credits-start))
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(let* ((c (vector-ref credits i)))
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((credit-draw c) y)
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(lp (1+ i) (+ y (credit-height c)))))))
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(define (load-credits!)
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(replace-game-state! 'credits)
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(set! *actormap* (make-whactormap))
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(clear-snapshots!)
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(with-goblins
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(set! *level* (load-credits #f))
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(update-objects!))
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;; Update function
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(run-script
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(lambda ()
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(set-credits-top! credits-start)
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(set-credits-first-visible-index! 0)
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(while (< (credits-first-visible-index) (vector-length credits))
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;; Remove credits as they leave the screen and become invisible
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(let ((bottom (+ (credits-top)
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(credit-height (vector-ref
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credits
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(credits-first-visible-index))))))
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(when (< bottom credits-end)
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(set-credits-top! bottom)
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(set-credits-first-visible-index! (1+ (credits-first-visible-index)))))
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;; Advance credits
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(set-credits-top! (- (credits-top) (/ (line-height) credits-pace)))
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(wait 1)))))
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(define (reset-game!)
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(run-script
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