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(import scheme (chicken base) (chicken keyword) srfi-64 defstruct (srfi 69))
;; --- Mocks ---
(module sdl2 *
(import scheme (chicken base))
(define (set-main-ready!) #f)
(define (init! . args) #f)
(define (quit! . args) #f)
(define (get-ticks) 0)
(define (delay! ms) #f)
(define (pump-events!) #f)
(define (has-events?) #f)
(define (make-event) #f)
(define (poll-event! e) #f)
(define (num-joysticks) 0)
(define (is-game-controller? i) #f)
(define (game-controller-open! i) #f)
(define (create-window! . args) 'mock-window)
(define (create-renderer! . args) 'mock-renderer)
(define (destroy-window! . args) #f)
(define (render-clear! . args) #f)
(define (render-present! . args) #f)
(define (make-rect x y w h) (list x y w h))
(define (render-copy! . args) #f)
(define (render-copy-ex! . args) #f)
(define (create-texture-from-surface . args) #f))
(import (prefix sdl2 "sdl2:"))
(module sdl2-ttf *
(import scheme (chicken base))
(define (init!) #f))
(import (prefix sdl2-ttf "ttf:"))
(module sdl2-image *
(import scheme (chicken base))
(define (init! . args) #f))
(import (prefix sdl2-image "img:"))
;; --- Entity module (mock minimal structs) ---
(module downstroke-entity *
(import scheme (chicken base))
(define (entity-ref entity key #!optional (default #f))
(let loop ((plist entity))
(cond
((null? plist) (if (procedure? default) (default) default))
((eq? (car plist) key) (cadr plist))
(else (loop (cddr plist)))))))
(import downstroke-entity)
;; --- Input module (mock) ---
(module downstroke-input *
(import scheme (chicken base) defstruct)
(defstruct input-config
actions keyboard-map joy-button-map controller-button-map
joy-axis-bindings controller-axis-bindings deadzone)
(define-record input-state current previous)
(define *default-input-config*
(make-input-config
actions: '(up down left right a b start select quit)
keyboard-map: '((w . up) (up . up) (s . down) (down . down)
(a . left) (left . left) (d . right) (right . right)
(j . a) (z . a) (k . b) (x . b)
(return . start) (escape . quit))
joy-button-map: '((0 . a) (1 . b) (7 . start) (6 . select))
controller-button-map: '((a . a) (b . b) (start . start) (back . select)
(dpad-up . up) (dpad-down . down)
(dpad-left . left) (dpad-right . right))
joy-axis-bindings: '((0 right left) (1 down up))
controller-axis-bindings: '((left-x right left) (left-y down up))
deadzone: 8000))
(define (create-input-state config)
(make-input-state '() '()))
(define (input-state-update state events config)
state)
(define (input-held? state action)
#f))
(import downstroke-input)
;; --- World module (mock) ---
(module downstroke-world *
(import scheme (chicken base) defstruct)
(import downstroke-entity)
(defstruct camera x y)
(defstruct scene entities tilemap camera tileset-texture camera-target)
;; Mock camera-follow! - just clamps camera position
(define (camera-follow! camera entity viewport-w viewport-h)
(camera-x-set! camera (max 0 (- (entity-ref entity #:x 0) (/ viewport-w 2))))
(camera-y-set! camera (max 0 (- (entity-ref entity #:y 0) (/ viewport-h 2)))))
;; Mock scene-find-tagged - finds first entity with matching tag
(define (scene-find-tagged scene tag)
(let loop ((entities (scene-entities scene)))
(cond
((null? entities) #f)
((member tag (entity-ref (car entities) #:tags '())) (car entities))
(else (loop (cdr entities)))))))
(import downstroke-world)
;; --- Real deps ---
(import simple-logger) ;; required by input.scm
(include "assets.scm")
(import downstroke-assets)
;; --- Renderer module (mock) ---
(module downstroke-renderer *
(import scheme (chicken base))
(define (render-scene! . args) #f)
(define (render-debug-scene! . args) #f))
(import downstroke-renderer)
;; --- Engine module (real) ---
(include "engine.scm")
(import downstroke-engine)
;; --- Tests ---
(test-begin "engine")
(test-group "make-game defaults"
(let ((g (make-game)))
(test-equal "default title"
"Downstroke Game"
(game-title g))
(test-equal "default width"
640
(game-width g))
(test-equal "default height"
480
(game-height g))
(test-equal "default frame-delay"
16
(game-frame-delay g))
(test-equal "scene starts as #f"
#f
(game-scene g))
(test-equal "window starts as #f"
#f
(game-window g))
(test-equal "renderer starts as #f"
#f
(game-renderer g))
(test-assert "assets registry is created"
(game-assets g))
(test-assert "input state is created"
(game-input g))
(test-equal "debug? defaults to #f"
#f
(game-debug? g))))
(test-group "make-game with keyword args"
(let ((g (make-game title: "My Game" width: 320 height: 240 frame-delay: 33)))
(test-equal "custom title" "My Game" (game-title g))
(test-equal "custom width" 320 (game-width g))
(test-equal "custom height" 240 (game-height g))
(test-equal "custom frame-delay" 33 (game-frame-delay g))))
(test-group "make-game debug? keyword"
(test-equal "debug? defaults to #f"
#f
(game-debug? (make-game)))
(test-equal "debug? can be set to #t"
#t
(game-debug? (make-game debug?: #t))))
(test-group "game-asset and game-asset-set!"
(let ((g (make-game)))
(test-equal "missing key returns #f"
#f
(game-asset g 'no-such-asset))
(game-asset-set! g 'my-font 'font-object)
(test-equal "stored asset is retrievable"
'font-object
(game-asset g 'my-font))
(game-asset-set! g 'my-font 'updated-font)
(test-equal "overwrite replaces asset"
'updated-font
(game-asset g 'my-font))))
(test-group "make-game hooks default to #f"
(let ((g (make-game)))
(test-equal "preload-hook is #f" #f (game-preload-hook g))
(test-equal "create-hook is #f" #f (game-create-hook g))
(test-equal "update-hook is #f" #f (game-update-hook g))
(test-equal "render-hook is #f" #f (game-render-hook g))))
(test-group "make-game accepts hook lambdas"
(let* ((called #f)
(g (make-game update: (lambda (game dt) (set! called #t)))))
(test-assert "update hook is stored"
(procedure? (game-update-hook g)))))
(test-group "game-camera"
(let* ((cam (make-camera x: 10 y: 20))
(scene (make-scene entities: '()
tilemap: #f
camera: cam
tileset-texture: #f
camera-target: #f))
(g (make-game)))
(game-scene-set! g scene)
(test-equal "returns scene camera"
cam
(game-camera g))))
(test-group "make-game-state"
(let ((s (make-game-state create: (lambda (g) 'created)
update: (lambda (g dt) 'updated)
render: (lambda (g) 'rendered))))
(test-assert "state has create hook" (state-hook s #:create))
(test-assert "state has update hook" (state-hook s #:update))
(test-assert "state has render hook" (state-hook s #:render)))
(let ((s (make-game-state)))
(test-equal "default state hooks are #f" #f (state-hook s #:create))
(test-equal "default state update is #f" #f (state-hook s #:update))))
(test-group "game-add-state! and game-start-state!"
(let* ((created? #f)
(game (make-game))
(state (make-game-state
create: (lambda (g) (set! created? #t)))))
(game-add-state! game 'play state)
(test-equal "active-state defaults to #f" #f (game-active-state game))
(game-start-state! game 'play)
(test-equal "active-state set after start" 'play (game-active-state game))
(test-assert "create hook called on start" created?)))
(test-group "game states defaults"
(let ((game (make-game)))
(test-assert "states is a hash-table" (hash-table? (game-states game)))
(test-equal "active-state defaults to #f" #f (game-active-state game))))
(test-end "engine")
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