diff options
| author | Walter Lewis <wklew@mailbox.org> | 2024-10-20 19:00:32 -0400 |
|---|---|---|
| committer | David Thompson <dthompson2@worcester.edu> | 2024-10-22 07:40:54 -0400 |
| commit | 31b0a07f6a3ea3c37ae39740948f8d6471d8e5a3 (patch) | |
| tree | 56a4c7076b5233e718edeac1dea92dd486685220 | |
| parent | 41e7e7152a66f40f3a23439fb0ea4b2b03acbf1c (diff) | |
Add support for polylines in tile maps
Adds support for polylines (unclosed polygons) in tile maps,
which are indicated by `<polyline>...</polyline>`.
Tiled docs: https://doc.mapeditor.org/en/stable/manual/objects/#polylines
Tested on both polygons and polylines using a map I made.
| -rw-r--r-- | chickadee/graphics/tile-map.scm | 36 |
1 files changed, 25 insertions, 11 deletions
diff --git a/chickadee/graphics/tile-map.scm b/chickadee/graphics/tile-map.scm index 84213eb..9479e82 100644 --- a/chickadee/graphics/tile-map.scm +++ b/chickadee/graphics/tile-map.scm @@ -89,6 +89,9 @@ polygon? polygon-points + polyline? + polyline-points + map-object? map-object-id map-object-name @@ -230,6 +233,11 @@ polygon? (points polygon-points)) +(define-record-type <polyline> + (make-polyline points) + polyline? + (points polyline-points)) + (define-record-type <map-object> (%make-map-object id name type shape properties) map-object? @@ -800,15 +808,14 @@ the default ORIENTATION value of 'orthogonal' is supported." (y height)) (tile-layer-set! layer x y (vector-ref tiles (+ (* y width) x)))) layer)) - (define (parse-polygon node pixel-height) - (make-polygon - (list->vector - (map (lambda (s) - (match (string-split s #\,) - ((x y) - (vec2 (string->number x) - (- pixel-height (string->number y)))))) - (string-split (attr node 'points) #\space))))) + (define (parse-points node pixel-height) + (list->vector + (map (lambda (s) + (match (string-split s #\,) + ((x y) + (vec2 (string->number x) + (- pixel-height (string->number y)))))) + (string-split (attr node 'points) #\space)))) (define (parse-object node pixel-height) (let* ((id (attr node 'id string->number)) (name (attr node 'name)) @@ -819,8 +826,15 @@ the default ORIENTATION value of 'orthogonal' is supported." (height (attr node 'height string->number)) (shape (if (and width height) (make-rect x y width height) - (parse-polygon (car ((sxpath '(polygon)) node)) - pixel-height))) + (match ((sxpath '(polygon)) node) + ((polygon . _) + (make-polygon + (parse-points polygon pixel-height))) + (() + (match ((sxpath '(polyline)) node) + ((polyline . _) + (make-polyline + (parse-points polyline pixel-height)))))))) (properties (map parse-property ((sxpath '(properties property)) node)))) (%make-map-object id name type shape properties))) |