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6 commits
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f67eb80910 | ||
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8842e01207 | ||
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5 changed files with 302 additions and 85 deletions
7
game.js
7
game.js
|
@ -81,7 +81,12 @@ window.addEventListener("load", async () => {
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translate: (ctx, x, y) => ctx.translate(x, y),
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rotate: (ctx, angle) => ctx.rotate(angle),
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setTransform: (ctx, a, b, c, d, e, f) => ctx.setTransform(a, b, c, d, e, f),
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setImageSmoothingEnabled: (ctx, enabled) => ctx.imageSmoothingEnabled = (enabled == 1)
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setImageSmoothingEnabled: (ctx, enabled) => ctx.imageSmoothingEnabled = (enabled == 1),
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measureText: (ctx, text) => ctx.measureText(text),
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},
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textMetrics: {
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actualBoundingBoxAscent: (metrics) => metrics.actualBoundingBoxAscent,
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actualBoundingBoxDescent: (metrics) => metrics.actualBoundingBoxDescent,
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},
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math: {
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random: () => Math.random()
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337
game.scm
337
game.scm
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@ -20,6 +20,7 @@
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;;; Code:
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(use-modules (dom canvas)
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(dom text-metrics)
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(dom document)
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(dom element)
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(dom event)
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@ -62,7 +63,8 @@
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(math)
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(math rect)
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(math vector)
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(scheme base))
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(scheme base)
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(srfi srfi-1))
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(define game-width 320.0)
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(define game-height 240.0)
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@ -225,14 +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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(set-vec2-y! *credits-scroll* 0.0)
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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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(define (load-level! idx)
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;; TODO: Maybe show a little achievement popup when all gems
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@ -287,6 +281,8 @@
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(set-level! *level-idx*)
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(media-play audio:bg-music)))))
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(define text-offset-y (* 0.75 tile-height))
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;; Menu types
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(define-record-type <menu>
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@ -396,6 +392,251 @@
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(pop-menu-history!)
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((cdr (vector-ref (menu-items (current-menu)) (current-menu-index))))))
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;; Credits
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(define credits-margin 0.0) ;; lines
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(define credits-pace 15.0) ;; ticks per line (inverse speed)
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(define credits-start (+ game-height text-offset-y))
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(define credits-end text-offset-y)
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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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1.25))))
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lh)))
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(define-record-type <credit>
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(_make-credit lines draw update on-enter on-leave)
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credit?
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(lines credit-lines)
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(draw credit-draw)
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(update credit-update)
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(on-enter credit-on-enter)
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(on-leave credit-on-leave))
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(define* (make-credit #:key (lines 1)
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(draw (lambda (y) #f))
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(update (lambda (t) #f))
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(on-enter (lambda () #f))
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(on-leave (lambda () #f)))
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(_make-credit lines draw update on-enter on-leave))
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(define* (make-credit-group #:rest credits)
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(let ((accumulate (lambda* (accessor #:key (init 0.0) preproc)
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(fold (lambda (c sum)
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(when preproc ((preproc c) sum))
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(+ sum (accessor c)))
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init credits)))
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(call (lambda (proc)
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(lambda ()
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(map (lambda (c) ((proc c))) credits)))))
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(make-credit
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#:lines (accumulate credit-lines)
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#:draw (lambda (top)
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(accumulate credit-height #:init top #:preproc credit-draw))
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#:update (lambda (top)
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(accumulate credit-height #:init top #:preproc credit-update))
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#:on-enter (call credit-on-enter)
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#:on-leave (call credit-on-leave))))
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(define (make-credit-text text)
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(make-credit
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#:draw
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(lambda (y)
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(set-fill-color! context "#fff")
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(set-text-align! context "center")
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(set-font! context "normal 16px monogram")
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(fill-text context text
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(* 0.7 game-width) y))))
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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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(define* (make-credit-centering credit #:key (padding 6.0) (easing 4.0)
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(on-enter-center (lambda () #f))
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(on-leave-center (lambda () #f)))
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(let* ((pi 3.14159)
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(offset 0.0)
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(speed (/ (line-height) credits-pace))
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(center (/ (- (+ credits-start credits-end) (credit-height credit)) 2.0))
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(ease-height (* (line-height) easing))
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(ease-speed (lambda (y) (* speed (sin (/ y ease-height)))))
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;; Amount that credits scroll up during easing
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(ease-travel (* ease-height (/ pi 2.0)))
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;; Start below center so that it eases right into the center
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(beg (+ center (- ease-travel ease-height)))
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(beg-mid (- beg ease-travel))
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(end-mid (- beg-mid (* (line-height) padding)))
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(end (- end-mid ease-travel)))
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(make-credit
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#:lines (+ padding (* 2 easing) (credit-lines credit))
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#:draw (lambda (y) ((credit-draw credit) (+ y offset)))
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#:update
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;; Remember that y is decreasing as credits rise up the screen
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;; toward y=0, so the comparators might seem to be flipped but
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;; that's how they need to be.
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(lambda (y)
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(when (and (<= y beg) (> y end))
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(cond
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((> y beg-mid)
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;; Accelerate
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(set! offset (+ offset (ease-speed (- beg y)))))
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((> y end-mid)
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;; Match speed
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(set! offset (+ offset speed))
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(when on-enter-center
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(on-enter-center)
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(set! on-enter-center #f)))
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(else
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;; Decelerate
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(when on-leave-center
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(on-leave-center)
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(set! on-leave-center #f))
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(set! offset (+ offset (ease-speed (- y end)))))))
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;; Call on-leave-center even if no easing is used
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(when (and (<= y end) on-leave-center)
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(on-leave-center)
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(set! on-leave-center #f))
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((credit-update credit) (+ y offset)))
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#:on-enter (credit-on-enter credit)
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#:on-leave (credit-on-leave credit))))
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(define (make-credits)
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(vector (make-credit-centering
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(make-credit-group
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(make-credit-text "Phew, you made it!")
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(make-credit-text "Time to relax.")))
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(make-credit-centering
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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-centering
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(make-credit-text "https://spritely.institute"))
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(make-credit-centering
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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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(make-credit-centering
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(make-credit-group
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(make-credit-underline "Level Design")
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(make-credit-text "Christine Lemmer-Webber")
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(make-credit-text "Juliana Sims")
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(make-credit-text "David Thompson"))
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#:on-enter-center (lambda () (pk "Level Design centering!!"))
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#:on-leave-center (lambda () (pk "Level Design leaving center!!")))
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(make-credit-centering
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(make-credit-group
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(make-credit-underline "Pixel Art")
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(make-credit-text "Christine Lemmer-Webber"))
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#:easing 0
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#:on-enter-center (lambda () (pk "Pixel Art centering!!"))
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#:on-leave-center (lambda () (pk "Pixel Art leaving center!!")))
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(make-credit-centering
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(make-credit-group
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(make-credit-underline "Music")
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(make-credit-text "EncryptedWhispers")
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(make-credit-text "Christine Lemmer-Webber")))
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(make-credit-centering
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(make-credit-group
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(make-credit-underline "Programming")
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(make-credit-text "Juliana Sims")
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(make-credit-text "David Thompson")
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(make-credit-text "Amy Grinn")))
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(make-credit-centering
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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-centering
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(make-credit-text "Thank you for playing!"))))
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(define-record-type <credits>
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(make-credits-state credits top first-visible-index next-visible-index)
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credits-state?
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(credits credits-state-credits)
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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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(next-visible-index
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credits-state-next-visible-index
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set-credits-state-next-visible-index!))
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(define *credits* #f)
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(define (credits)
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(credits-state-credits *credits*))
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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 (credits-next-visible-index)
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(credits-state-next-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 (set-credits-next-visible-index! index)
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(set-credits-state-next-visible-index! *credits* index))
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(define (credits-reset!)
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(set! *credits* (make-credits-state (make-credits) credits-start 0 -1)))
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(define (load-credits!)
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(credits-reset!)
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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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(define (credit-height credit)
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(* (credit-lines credit) (line-height)))
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(define (draw-credits)
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(draw-level)
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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) (* (line-height)
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credits-margin)))))))
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(define (update-credits!)
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(let ((i (credits-first-visible-index)))
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(when (< i (vector-length (credits)))
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;; Update credits
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(let lp ((i i)
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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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;; Call on-enter as credits enter the screen
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(when (> i (credits-next-visible-index))
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((credit-on-enter c))
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(set-credits-next-visible-index! i))
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((credit-update c) y)
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(lp (1+ i) (+ y (credit-height c) (* (line-height) credits-margin))))))
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;; Remove credits as they leave the screen
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(let* ((c (vector-ref (credits) i))
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(bottom (+ (credits-top) (credit-height c))))
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(when (< bottom credits-end)
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(set-credits-top! (+ bottom (* (line-height) credits-margin)))
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(set-credits-first-visible-index! (1+ i))
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((credit-on-leave c))))
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;; Advance credits
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(set-credits-top! (- (credits-top) (/ (line-height) credits-pace))))))
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(define (reset-game!)
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(run-script
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(lambda ()
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@ -533,7 +774,9 @@
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(maybe-poll-gamepad)
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(scheduler-tick! (current-scheduler))
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(particle-pool-update! particles)
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(timeout update-callback dt))
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(timeout update-callback dt)
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(when (equal? (current-game-state) 'credits)
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(update-credits!)))
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(define update-callback (procedure->external update))
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;; Rendering
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@ -741,7 +984,6 @@
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;; + num menu items + 1 for ellipses if num items is too big
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;; + the y padding again
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(let* ((padding-y 1)
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(text-offset-y (* 0.75 tile-height))
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(width 8.0)
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(num-items (vector-length (menu-items (current-menu))))
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(height (+ 2 ;; Menu title + back/ellipses
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@ -786,7 +1028,7 @@
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(vec2-x center) y-text))
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(set-text-align! context "left")
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;; indicator
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(when (= (+ r r-page-offset) (current-menu-index))
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(when (= r-page (current-menu-index))
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(fill-text context "▸" x-gutter y-text))
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;; Menu items
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(when (>= r -1)
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@ -842,77 +1084,6 @@
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(define (draw-interstitial)
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(draw-level))
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(define *credits-scroll* (vec2 0.0 0.0))
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(define credits
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#("Phew, you made it!"
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"Time to relax."
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#f
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#f
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"Cirkoban was made by the"
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"Spritely Institute"
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#f
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"https://spritely.institute"
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#f
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"Game Design"
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"-----------"
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"Christine Lemmer-Webber"
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#f
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"Level Design"
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"------------"
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"Christine Lemmer-Webber"
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"Juliana Sims"
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"David Thompson"
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#f
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"Pixel Art"
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"---------"
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"Christine Lemmer-Webber"
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#f
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"Music"
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"-----"
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"EncryptedWhispers"
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"Christine Lemmer-Webber"
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#f
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"Programming"
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"-----------"
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"Juliana Sims"
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"David Thompson"
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#f
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"Other"
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"-----"
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"monogram font by datagoblin"
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#f
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#f
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||||
#f
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#f
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||||
#f
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#f
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#f
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#f
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"Thank you for playing!"))
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(define credits-line-spacing 16.0)
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(define max-credits-scroll
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(+ game-height (* (- (vector-length credits) 9) credits-line-spacing)))
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(define (draw-credits)
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(draw-level)
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(set-fill-color! context "#ffffff")
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(set-text-align! context "center")
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(set-font! context "normal 16px monogram")
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(set-vec2-y! *credits-scroll*
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(min (+ (vec2-y *credits-scroll*) 0.5)
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max-credits-scroll))
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(let* ((x (* game-width 0.7))
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(lines-on-screen 15)
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(scroll-y (vec2-y *credits-scroll*))
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;; TODO: Only render the lines on screen.
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(start 0)
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(end (vector-length credits)))
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(let lp ((i start) (y (- game-height scroll-y)))
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(when (< i end)
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(match (vector-ref credits i)
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(#f #f)
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(str (fill-text context str x y)))
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(lp (1+ i) (+ y credits-line-spacing))))))
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||||
(define *frame-time* (current-time*))
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(define (draw time)
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||||
(unless (and (real? time) (inexact? time))
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||||
|
|
|
@ -39,7 +39,8 @@
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|||
translate!
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||||
rotate!
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set-transform!
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||||
set-image-smoothing-enabled!))
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||||
set-image-smoothing-enabled!
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||||
measure-text))
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||||
|
||||
;; HTMLCanvasElement
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||||
(define-foreign get-context
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||||
|
@ -98,3 +99,6 @@
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|||
(define-foreign set-image-smoothing-enabled!
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"canvas" "setImageSmoothingEnabled"
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(ref extern) i32 -> none)
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||||
(define-foreign measure-text
|
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"canvas" "measureText"
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(ref extern) (ref string) -> (ref extern))
|
||||
|
|
34
modules/dom/text-metrics.scm
Normal file
34
modules/dom/text-metrics.scm
Normal file
|
@ -0,0 +1,34 @@
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|||
;;; Copyright (C) 2025 Amy Grinn <amy@spritely.institute>
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||||
;;;
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||||
;;; Licensed under the Apache License, Version 2.0 (the "License");
|
||||
;;; you may not use this file except in compliance with the License.
|
||||
;;; You may obtain a copy of the License at
|
||||
;;;
|
||||
;;; http://www.apache.org/licenses/LICENSE-2.0
|
||||
;;;
|
||||
;;; Unless required by applicable law or agreed to in writing, software
|
||||
;;; distributed under the License is distributed on an "AS IS" BASIS,
|
||||
;;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
;;; See the License for the specific language governing permissions and
|
||||
;;; limitations under the License.
|
||||
|
||||
;;; Commentary:
|
||||
;;;
|
||||
;;; HTML canvas TextMetrics interface bindings
|
||||
;;;
|
||||
;;; Code:
|
||||
|
||||
(define-module (dom text-metrics)
|
||||
#:pure
|
||||
#:use-module (scheme base)
|
||||
#:use-module (hoot ffi)
|
||||
#:export (text-metrics-actual-bounding-box-ascent
|
||||
text-metrics-actual-bounding-box-descent))
|
||||
|
||||
(define-foreign text-metrics-actual-bounding-box-ascent
|
||||
"textMetrics" "actualBoundingBoxAscent"
|
||||
(ref extern) -> i32)
|
||||
|
||||
(define-foreign text-metrics-actual-bounding-box-descent
|
||||
"textMetrics" "actualBoundingBoxDescent"
|
||||
(ref extern) -> i32)
|
3
modules/srfi/srf-1.scm
Normal file
3
modules/srfi/srf-1.scm
Normal file
|
@ -0,0 +1,3 @@
|
|||
(define-module (srfi srfi-1)
|
||||
#:use-module ((scheme base) #:select (fold))
|
||||
#:re-export (fold))
|
Loading…
Add table
Reference in a new issue