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;; Load base deps
(import scheme
(chicken base)
(chicken keyword)
(only srfi-1 fold iota for-each)
srfi-69
defstruct
srfi-64)
;; Mock tilemap module
(module downstroke-tilemap *
(import scheme (chicken base) defstruct)
(defstruct tileset tilewidth tileheight spacing tilecount columns image-source image)
(defstruct layer name width height map)
(defstruct tilemap width height tilewidth tileheight tileset-source tileset layers objects)
(defstruct tile id rect)
(define (tileset-tile ts id) (make-tile id: id rect: #f))
(define (tile-rect t) #f))
(import downstroke-tilemap)
;; Mock sdl2
(module sdl2 *
(import scheme (chicken base))
(define (make-rect x y w h) (list x y w h))
(define (make-color r g b) (list r g b))
(define (render-copy! . args) #f)
(define (render-copy-ex! . args) #f)
(define (create-texture-from-surface . args) #f)
(define (render-fill-rect! . args) #f)
;; Mock SRFI-17 setter for render-draw-color
(define render-draw-color (getter-with-setter (lambda (r) #f) (lambda (r c) #f))))
(import (prefix sdl2 "sdl2:"))
;; Mock sdl2-ttf
(module sdl2-ttf *
(import scheme (chicken base))
(define (render-text-solid . args) #f)
(define (size-utf8 . args) (values 0 0)))
(import (prefix sdl2-ttf "ttf:"))
;; Load entity module
(include "entity.scm")
(import downstroke-entity)
;; Load world module
(include "world.scm")
(import downstroke-world)
;; Load renderer module
(include "renderer.scm")
(import downstroke-renderer)
(test-begin "renderer")
(test-group "entity-screen-coords"
(let* ((cam (make-camera x: 10 y: 20))
(e (list #:x 50 #:y 80 #:width 16 #:height 16)))
(test-equal "subtracts camera offset from x"
40
(car (entity-screen-coords e cam)))
(test-equal "subtracts camera offset from y"
60
(cadr (entity-screen-coords e cam)))
(test-equal "preserves width"
16
(caddr (entity-screen-coords e cam)))
(test-equal "preserves height"
16
(cadddr (entity-screen-coords e cam))))
(let* ((cam (make-camera x: 0 y: 0))
(e (list #:x 100.7 #:y 200.3 #:width 16 #:height 16)))
(test-equal "floors fractional x"
100
(car (entity-screen-coords e cam)))
(test-equal "floors fractional y"
200
(cadr (entity-screen-coords e cam))))
(let* ((cam (make-camera x: 0 y: 0))
(e (list #:x 0 #:y 0 #:width 32 #:height 32)))
(test-equal "zero camera, zero position"
'(0 0 32 32)
(entity-screen-coords e cam))))
(test-group "entity-flip"
(test-equal "facing 1: no flip"
'()
(entity-flip (list #:facing 1)))
(test-equal "facing -1: horizontal flip"
'(horizontal)
(entity-flip (list #:facing -1)))
(test-equal "no facing key: defaults to no flip"
'()
(entity-flip (list #:x 0))))
(test-group "render-scene!"
(let* ((cam (make-camera x: 0 y: 0))
(tileset (make-tileset tilewidth: 16 tileheight: 16
spacing: 0 tilecount: 100 columns: 10
image-source: "" image: #f))
(layer (make-layer name: "ground" width: 2 height: 2
map: '((1 2) (3 4))))
(tilemap (make-tilemap width: 2 height: 2
tilewidth: 16 tileheight: 16
tileset-source: ""
tileset: tileset
layers: (list layer)
objects: '()))
(scene (make-scene entities: '()
tilemap: tilemap
camera: cam
tileset-texture: #f
camera-target: #f)))
(test-assert "does not crash on valid scene"
(begin (render-scene! #f scene) #t))))
(test-group "sprite-font"
(test-group "make-sprite-font*"
(let ((font (make-sprite-font* tile-size: 8 spacing: 1
ranges: (list (list #\A #\C 100)))))
(test-equal "A maps to 100"
100
(sprite-font-char->tile-id font #\A))
(test-equal "B maps to 101"
101
(sprite-font-char->tile-id font #\B))
(test-equal "C maps to 102"
102
(sprite-font-char->tile-id font #\C))))
(test-group "sprite-font-char->tile-id"
(let ((font (make-sprite-font* tile-size: 8 spacing: 1
ranges: (list (list #\A #\Z 100)))))
(test-equal "returns #f for unmapped char"
#f
(sprite-font-char->tile-id font #\1))
(test-equal "auto-upcase: lowercase a maps to uppercase"
100
(sprite-font-char->tile-id font #\a))))
(test-group "overlapping ranges"
(import (chicken condition))
(let ((caught-error #f))
(condition-case
(make-sprite-font* tile-size: 8 spacing: 1
ranges: (list (list #\A #\C 100)
(list #\B #\D 200)))
(e (exn)
(set! caught-error #t)))
(test-assert "signals error on overlapping range"
caught-error)))
(test-group "sprite-text-width"
(let ((font (make-sprite-font* tile-size: 8 spacing: 1
ranges: (list (list #\A #\Z 100)))))
(test-equal "empty string width is 0"
0
(sprite-text-width font ""))
(test-equal "single char width is tile-size"
8
(sprite-text-width font "A"))
(test-equal "two chars: 2*tile-size + 1*spacing"
17
(sprite-text-width font "AB"))
(test-equal "three chars: 3*tile-size + 2*spacing"
26
(sprite-text-width font "ABC"))))
(test-group "draw-sprite-text"
(let* ((font (make-sprite-font* tile-size: 8 spacing: 1
ranges: (list (list #\A #\Z 100))))
(tileset (make-tileset tilewidth: 8 tileheight: 8
spacing: 0 tilecount: 100 columns: 10
image-source: "" image: #f))
(renderer #f)
(texture #f))
(test-assert "does not crash with valid text"
(begin (draw-sprite-text renderer texture tileset font "HELLO" 10 20) #t))
(test-assert "does not crash with unmapped chars"
(begin (draw-sprite-text renderer texture tileset font "A1B" 0 0) #t)))))
(test-group "draw-menu-items"
(test-assert "does not crash with 3 items, cursor=1"
(let ((font #f)) ; mock font
(begin
(draw-menu-items #f font '("Item 1" "Item 2" "Item 3") 1 10 20 30)
#t)))
(test-assert "does not crash with keyword args label-fn:"
(let ((font #f))
(begin
(draw-menu-items #f font '("A" "B" "C") 0 10 20 30
label-fn: (lambda (x) (string-append "[" x "]")))
#t)))
(test-assert "does not crash with keyword args prefix:"
(let ((font #f))
(begin
(draw-menu-items #f font '("Item 1" "Item 2") 1 10 20 30
prefix: ">>> " no-prefix: " ")
#t))))
(test-group "debug-drawing"
(test-group "draw-debug-tiles"
(let* ((cam (make-camera x: 0 y: 0))
(tileset (make-tileset tilewidth: 16 tileheight: 16
spacing: 0 tilecount: 100 columns: 10
image-source: "" image: #f))
(layer (make-layer name: "ground" width: 2 height: 2
map: '((0 1) (2 3))))
(tilemap (make-tilemap width: 2 height: 2
tilewidth: 16 tileheight: 16
tileset-source: ""
tileset: tileset
layers: (list layer)
objects: '()))
(renderer #f))
(test-assert "does not crash with 2x2 tilemap"
(begin (draw-debug-tiles renderer cam tilemap) #t))))
(test-group "draw-debug-entities"
(let* ((cam (make-camera x: 0 y: 0))
(tileset (make-tileset tilewidth: 16 tileheight: 16
spacing: 0 tilecount: 100 columns: 10
image-source: "" image: #f))
(layer (make-layer name: "ground" width: 1 height: 1
map: '((0))))
(tilemap (make-tilemap width: 1 height: 1
tilewidth: 16 tileheight: 16
tileset-source: ""
tileset: tileset
layers: (list layer)
objects: '()))
(player (list #:type 'player #:x 10 #:y 20 #:width 16 #:height 16 #:facing 1))
(enemy (list #:type 'enemy #:x 50 #:y 60 #:width 16 #:height 16 #:facing -1))
(scene (make-scene entities: (list player enemy)
tilemap: tilemap
camera: cam
tileset-texture: #f
camera-target: #f))
(renderer #f))
(test-assert "does not crash with player and enemy entities"
(begin (draw-debug-entities renderer cam scene) #t))))
(test-group "render-debug-scene!"
(let* ((cam (make-camera x: 0 y: 0))
(tileset (make-tileset tilewidth: 16 tileheight: 16
spacing: 0 tilecount: 100 columns: 10
image-source: "" image: #f))
(layer (make-layer name: "ground" width: 1 height: 1
map: '((0))))
(tilemap (make-tilemap width: 1 height: 1
tilewidth: 16 tileheight: 16
tileset-source: ""
tileset: tileset
layers: (list layer)
objects: '()))
(player (list #:type 'player #:x 10 #:y 20 #:width 16 #:height 16 #:facing 1))
(scene (make-scene entities: (list player)
tilemap: tilemap
camera: cam
tileset-texture: #f
camera-target: #f))
(renderer #f))
(test-assert "does not crash with full scene"
(begin (render-debug-scene! renderer scene) #t)))))
(test-group "scene-entities must be plists"
(let* ((cam (make-camera x: 0 y: 0))
(tileset (make-tileset tilewidth: 16 tileheight: 16
spacing: 0 tilecount: 100 columns: 10
image-source: "" image: #f))
(layer (make-layer name: "ground" width: 1 height: 1 map: '((0))))
(tilemap (make-tilemap width: 1 height: 1 tilewidth: 16 tileheight: 16
tileset-source: "" tileset: tileset
layers: (list layer) objects: '()))
(tex 'mock-texture)
(entity (list #:type 'box #:x 10 #:y 20 #:width 16 #:height 16 #:tile-id 1))
(cell (vector entity 'extra-data 0 100 'linear #t))
(scene-ok (make-scene entities: (list entity)
tilemap: tilemap camera: cam
tileset-texture: tex camera-target: #f))
(scene-bad (make-scene entities: (list cell)
tilemap: tilemap camera: cam
tileset-texture: tex camera-target: #f)))
(test-assert "render-scene! works with plist entities"
(begin (render-scene! #f scene-ok) #t))
(test-error "render-scene! errors when entity list contains a vector"
#t (render-scene! #f scene-bad))
(test-assert "extracting entity from cell vector fixes the issue"
(let ((scene-fixed (make-scene entities: (list (vector-ref cell 0))
tilemap: tilemap camera: cam
tileset-texture: tex camera-target: #f)))
(begin (render-scene! #f scene-fixed) #t)))))
(test-end "renderer")
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