From e05aa45f672eb49312449d359a9e345223741b19 Mon Sep 17 00:00:00 2001
From: David Thompson <dthompson2@worcester.edu>
Date: Fri, 9 Apr 2021 22:37:49 -0400
Subject: graphics: Rewrite tile map module.

---
 examples/images/serene-village.png | Bin 0 -> 122591 bytes
 examples/images/tiles.png          | Bin 100846 -> 0 bytes
 examples/maps/example.tmx          | 348 ++++++++++++++++++++++++++++---------
 examples/maps/serene-village.tsx   |  84 +++++++++
 examples/tile-map.scm              | 100 +++++++++++
 examples/tiled.scm                 |  81 ---------
 6 files changed, 447 insertions(+), 166 deletions(-)
 create mode 100644 examples/images/serene-village.png
 delete mode 100644 examples/images/tiles.png
 create mode 100644 examples/maps/serene-village.tsx
 create mode 100644 examples/tile-map.scm
 delete mode 100644 examples/tiled.scm

(limited to 'examples')

diff --git a/examples/images/serene-village.png b/examples/images/serene-village.png
new file mode 100644
index 0000000..d94cb31
Binary files /dev/null and b/examples/images/serene-village.png differ
diff --git a/examples/images/tiles.png b/examples/images/tiles.png
deleted file mode 100644
index d8a3dfd..0000000
Binary files a/examples/images/tiles.png and /dev/null differ
diff --git a/examples/maps/example.tmx b/examples/maps/example.tmx
index 6c8bc3d..4a3a77a 100644
--- a/examples/maps/example.tmx
+++ b/examples/maps/example.tmx
@@ -1,96 +1,274 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<map version="1.0" tiledversion="1.1.0" orientation="orthogonal" renderorder="right-up" width="20" height="15" tilewidth="16" tileheight="16" infinite="0" nextobjectid="1">
- <tileset firstgid="1" name="tiles" tilewidth="16" tileheight="16" tilecount="1440" columns="40">
-  <image source="../images/tiles.png" width="640" height="576"/>
-  <terraintypes>
-   <terrain name="grass" tile="0"/>
-   <terrain name="dark-grass" tile="1"/>
-   <terrain name="tree" tile="1"/>
-   <terrain name="nothing" tile="1"/>
-  </terraintypes>
-  <tile id="0" terrain="0,0,0,0"/>
-  <tile id="360" terrain="0,0,0,1"/>
-  <tile id="361" terrain="0,0,1,0"/>
-  <tile id="400" terrain="0,1,0,0"/>
-  <tile id="401" terrain="1,0,0,0"/>
-  <tile id="642" terrain="2,2,2,2"/>
-  <tile id="643" terrain="3,2,2,2"/>
-  <tile id="644" terrain="2,3,2,2"/>
-  <tile id="645" terrain="3,3,3,2"/>
-  <tile id="646" terrain="3,3,2,3"/>
-  <tile id="648" terrain="3,3,3,3"/>
-  <tile id="685" terrain="3,2,3,3"/>
-  <tile id="686" terrain="2,3,3,3"/>
-  <tile id="725" terrain="3,3,2,2"/>
-  <tile id="1174" terrain="0,0,0,1"/>
-  <tile id="1175" terrain="0,0,1,1"/>
-  <tile id="1176" terrain="0,0,1,0"/>
-  <tile id="1214" terrain="0,1,0,1"/>
-  <tile id="1215" terrain="1,1,1,1"/>
-  <tile id="1216" terrain="1,0,1,0"/>
-  <tile id="1254" terrain="0,1,0,0"/>
-  <tile id="1255" terrain="1,1,0,0"/>
-  <tile id="1256" terrain="1,0,0,0"/>
-  <tile id="1294" terrain="1,1,1,0"/>
-  <tile id="1295" terrain="1,1,0,1"/>
-  <tile id="1334" terrain="1,0,1,1"/>
-  <tile id="1335" terrain="0,1,1,1"/>
- </tileset>
- <layer name="background" width="20" height="15">
+<map version="1.5" tiledversion="1.5.0" orientation="orthogonal" renderorder="right-down" width="50" height="50" tilewidth="32" tileheight="32" infinite="0" nextlayerid="6" nextobjectid="1">
+ <tileset firstgid="1" source="serene-village.tsx"/>
+ <layer id="1" name="Water" width="50" height="50">
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 </map>
diff --git a/examples/maps/serene-village.tsx b/examples/maps/serene-village.tsx
new file mode 100644
index 0000000..aec16da
--- /dev/null
+++ b/examples/maps/serene-village.tsx
@@ -0,0 +1,84 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<tileset version="1.5" tiledversion="1.5.0" name="Serene Village" tilewidth="32" tileheight="32" tilecount="855" columns="19">
+ <image source="../images/serene-village.png" width="608" height="1440"/>
+ <tile id="209">
+  <animation>
+   <frame tileid="209" duration="100"/>
+   <frame tileid="210" duration="100"/>
+   <frame tileid="211" duration="100"/>
+   <frame tileid="212" duration="100"/>
+   <frame tileid="213" duration="100"/>
+   <frame tileid="214" duration="100"/>
+   <frame tileid="215" duration="100"/>
+   <frame tileid="216" duration="100"/>
+   <frame tileid="217" duration="100"/>
+   <frame tileid="218" duration="100"/>
+   <frame tileid="219" duration="100"/>
+   <frame tileid="220" duration="100"/>
+   <frame tileid="221" duration="100"/>
+   <frame tileid="222" duration="100"/>
+  </animation>
+ </tile>
+ <tile id="718">
+  <animation>
+   <frame tileid="718" duration="100"/>
+   <frame tileid="719" duration="100"/>
+   <frame tileid="720" duration="100"/>
+   <frame tileid="721" duration="100"/>
+  </animation>
+ </tile>
+ <wangsets>
+  <wangset name="Unnamed Set" type="corner" tile="-1">
+   <wangcolor name="Grass" color="#ff0000" tile="-1" probability="1"/>
+   <wangcolor name="Water" color="#00ff00" tile="-1" probability="1"/>
+   <wangcolor name="Dirt" color="#0000ff" tile="-1" probability="1"/>
+   <wangtile tileid="3" wangid="0,1,0,1,0,1,0,1"/>
+   <wangtile tileid="4" wangid="0,1,0,1,0,1,0,1"/>
+   <wangtile tileid="5" wangid="0,1,0,1,0,1,0,1"/>
+   <wangtile tileid="20" wangid="0,1,0,1,0,1,0,0"/>
+   <wangtile tileid="21" wangid="0,0,0,1,0,1,0,1"/>
+   <wangtile tileid="22" wangid="0,1,0,1,0,1,0,3"/>
+   <wangtile tileid="23" wangid="0,1,0,1,0,1,0,1"/>
+   <wangtile tileid="24" wangid="0,3,0,1,0,1,0,1"/>
+   <wangtile tileid="25" wangid="0,3,0,1,0,3,0,3"/>
+   <wangtile tileid="26" wangid="0,3,0,1,0,1,0,3"/>
+   <wangtile tileid="27" wangid="0,3,0,1,0,1,0,3"/>
+   <wangtile tileid="28" wangid="0,3,0,3,0,1,0,3"/>
+   <wangtile tileid="39" wangid="0,1,0,1,0,0,0,1"/>
+   <wangtile tileid="40" wangid="0,1,0,0,0,1,0,1"/>
+   <wangtile tileid="41" wangid="0,1,0,1,0,3,0,1"/>
+   <wangtile tileid="42" wangid="0,1,0,1,0,1,0,1"/>
+   <wangtile tileid="43" wangid="0,1,0,3,0,1,0,1"/>
+   <wangtile tileid="44" wangid="0,1,0,1,0,3,0,3"/>
+   <wangtile tileid="45" wangid="0,1,0,1,0,1,0,1"/>
+   <wangtile tileid="46" wangid="0,1,0,1,0,1,0,1"/>
+   <wangtile tileid="47" wangid="0,3,0,3,0,1,0,1"/>
+   <wangtile tileid="48" wangid="0,3,0,3,0,3,0,3"/>
+   <wangtile tileid="60" wangid="0,1,0,1,0,3,0,3"/>
+   <wangtile tileid="61" wangid="0,1,0,1,0,1,0,1"/>
+   <wangtile tileid="62" wangid="0,3,0,3,0,1,0,1"/>
+   <wangtile tileid="63" wangid="0,1,0,3,0,3,0,3"/>
+   <wangtile tileid="64" wangid="0,1,0,3,0,3,0,1"/>
+   <wangtile tileid="65" wangid="0,1,0,3,0,3,0,1"/>
+   <wangtile tileid="66" wangid="0,3,0,3,0,3,0,1"/>
+   <wangtile tileid="79" wangid="0,0,0,1,0,0,0,0"/>
+   <wangtile tileid="80" wangid="0,0,0,1,0,1,0,0"/>
+   <wangtile tileid="81" wangid="0,0,0,1,0,1,0,0"/>
+   <wangtile tileid="82" wangid="0,0,0,1,0,1,0,0"/>
+   <wangtile tileid="83" wangid="0,0,0,1,0,1,0,0"/>
+   <wangtile tileid="84" wangid="0,0,0,0,0,1,0,0"/>
+   <wangtile tileid="98" wangid="0,1,0,1,0,0,0,0"/>
+   <wangtile tileid="99" wangid="0,1,0,1,0,1,0,1"/>
+   <wangtile tileid="100" wangid="0,1,0,1,0,1,0,1"/>
+   <wangtile tileid="101" wangid="0,1,0,1,0,1,0,1"/>
+   <wangtile tileid="102" wangid="0,1,0,1,0,1,0,1"/>
+   <wangtile tileid="103" wangid="0,0,0,0,0,1,0,1"/>
+   <wangtile tileid="117" wangid="0,1,0,0,0,0,0,0"/>
+   <wangtile tileid="118" wangid="0,1,0,0,0,0,0,1"/>
+   <wangtile tileid="119" wangid="0,1,0,0,0,0,0,1"/>
+   <wangtile tileid="120" wangid="0,1,0,0,0,0,0,1"/>
+   <wangtile tileid="121" wangid="0,1,0,0,0,0,0,1"/>
+   <wangtile tileid="122" wangid="0,0,0,0,0,0,0,1"/>
+  </wangset>
+ </wangsets>
+</tileset>
diff --git a/examples/tile-map.scm b/examples/tile-map.scm
new file mode 100644
index 0000000..52d6b94
--- /dev/null
+++ b/examples/tile-map.scm
@@ -0,0 +1,100 @@
+(use-modules (chickadee)
+             (chickadee math vector)
+             (chickadee math rect)
+             (chickadee graphics color)
+             (chickadee graphics font)
+             (chickadee graphics tile-map)
+             (ice-9 format)
+             (ice-9 match)
+             (srfi srfi-11))
+
+(define window-width 960)
+(define window-height 540)
+(define map #f)
+(define prev-camera (vec2 0.0 0.0))
+(define camera (vec2 0.0 0.0))
+(define render-camera (vec2 0.0 0.0))
+(define text-position (vec2 4.0 4.0))
+(define text "0, 0")
+(define (stats-message)
+  (format #f "fps: ~1,2f"
+          (/ 1.0 avg-frame-time)))
+(define start-time 0.0)
+(define avg-frame-time 16)
+(define stats-text (stats-message))
+(define stats-text-pos (vec2 4.0 (- window-height 16.0)))
+(define last-update start-time)
+(define scroll-speed 6.0)
+
+(define (load)
+  (set! map (load-tile-map "maps/example3.tmx")))
+
+(define (draw alpha)
+  ;; Linearly interpolate between the current camera position and the
+  ;; previous camera position based on the alpha value.  This makes
+  ;; the scrolling appear much smoother because the Chickadee game
+  ;; loop does not render in lock-step with updates.
+  (let ((beta (- 1.0 alpha)))
+    (set-vec2-x! render-camera
+                 (round
+                  (+ (* (vec2-x camera) alpha)
+                     (* (vec2-x prev-camera) beta))))
+    (set-vec2-y! render-camera
+                 (round
+                  (+ (* (vec2-y camera) alpha)
+                     (* (vec2-y prev-camera) beta)))))
+  (draw-tile-map map #:camera render-camera)
+  (draw-text text text-position #:color black)
+  (draw-text stats-text stats-text-pos #:color black)
+  (let ((current-time (elapsed-time)))
+    (set! avg-frame-time
+          (+ (* (- current-time start-time) 0.1)
+             (* avg-frame-time 0.9)))
+    (set! start-time current-time)
+    (when (>= (- current-time last-update) 1.0)
+      (set! stats-text (stats-message))
+      (set! last-update current-time))))
+
+(define (refresh-tile-coords x y)
+  (call-with-values (lambda ()
+                      (point->tile map
+                                   (+ x (vec2-x camera))
+                                   (+ y (vec2-y camera))))
+    (lambda (tx ty)
+      (set! text (format #f "~d, ~d" tx ty)))))
+
+(define (update dt)
+  (vec2-copy! camera prev-camera)
+  (set-vec2! camera
+             (min (max (+ (vec2-x camera)
+                          (if (key-pressed? 'right) scroll-speed 0.0)
+                          (if (key-pressed? 'left) (- scroll-speed) 0.0))
+                       0.0)
+                  (- (* (tile-map-width map) (tile-map-tile-width map))
+                     window-width))
+             (min (max (+ (vec2-y camera)
+                          (if (key-pressed? 'up) scroll-speed 0.0)
+                          (if (key-pressed? 'down) (- scroll-speed) 0.0))
+                       0.0)
+                  (- (* (tile-map-height map) (tile-map-tile-height map))
+                     window-height)))
+  (when (or (key-pressed? 'left) (key-pressed? 'right)
+            (key-pressed? 'down) (key-pressed? 'up))
+    (refresh-tile-coords (mouse-x) (mouse-y))))
+
+(define (key-press key modifiers repeat?)
+  (match key
+    ((or 'escape 'q) (abort-game))
+    (_ #t)))
+
+(define (mouse-move x y x-rel y-rel buttons)
+  (refresh-tile-coords x y))
+
+(run-game #:window-width window-width
+          #:window-height window-height
+          #:window-title "tile map demo"
+          #:load load
+          #:draw draw
+          #:update update
+          #:key-press key-press
+          #:mouse-move mouse-move)
diff --git a/examples/tiled.scm b/examples/tiled.scm
deleted file mode 100644
index c528f74..0000000
--- a/examples/tiled.scm
+++ /dev/null
@@ -1,81 +0,0 @@
-(use-modules (chickadee)
-             (chickadee math vector)
-             (chickadee math rect)
-             (chickadee graphics color)
-             (chickadee graphics font)
-             (chickadee graphics tiled)
-             (ice-9 format)
-             (ice-9 match)
-             (srfi srfi-11))
-
-(define map #f)
-(define prev-camera (vec2 0.0 0.0))
-(define camera (vec2 0.0 0.0))
-(define render-camera (vec2 0.0 0.0))
-(define text-position (vec2 4.0 4.0))
-(define text "0, 0")
-(define (stats-message)
-  (format #f "fps: ~1,2f"
-          (/ 1.0 avg-frame-time)))
-(define start-time 0.0)
-(define avg-frame-time 16)
-(define stats-text (stats-message))
-(define stats-text-pos (vec2 4.0 464.0))
-(define last-update start-time)
-(define scroll-speed 6.0)
-
-(define (load)
-  (set! map (load-tile-map "maps/example.tmx")))
-
-(define (draw alpha)
-  ;; Linearly interpolate between the current camera position and the
-  ;; previous camera position based on the alpha value.  This makes
-  ;; the scrolling appear much smoother because the Chickadee game
-  ;; loop does not render in lock-step with updates.
-  (let ((beta (- 1.0 alpha)))
-    (set-vec2-x! render-camera
-                 (+ (* (vec2-x camera) alpha)
-                    (* (vec2-x prev-camera) beta)))
-    (set-vec2-y! render-camera
-                 (+ (* (vec2-y camera) alpha)
-                    (* (vec2-y prev-camera) beta))))
-  (draw-tile-map map #:camera render-camera)
-  (draw-text text text-position #:color black)
-  (draw-text stats-text stats-text-pos #:color black)
-  (let ((current-time (elapsed-time)))
-    (set! avg-frame-time
-          (+ (* (- current-time start-time) 0.1)
-             (* avg-frame-time 0.9)))
-    (set! start-time current-time)
-    (when (>= (- current-time last-update) 1000)
-      (set! stats-text (stats-message))
-      (set! last-update current-time))))
-
-(define (update dt)
-  (vec2-copy! camera prev-camera)
-  (set-vec2-x! camera
-               (+ (vec2-x camera)
-                  (if (key-pressed? 'right) scroll-speed 0.0)
-                  (if (key-pressed? 'left) (- scroll-speed) 0.0)))
-  (set-vec2-y! camera
-               (+ (vec2-y camera)
-                  (if (key-pressed? 'up) scroll-speed 0.0)
-                  (if (key-pressed? 'down) (- scroll-speed) 0.0))))
-
-(define (key-press key modifiers repeat?)
-  (match key
-    ((or 'escape 'q) (abort-game))
-    (_ #t)))
-
-(define (mouse-move x y x-rel y-rel buttons)
-  (let-values (((tx ty) (point->tile map (- x (vec2-x camera)) (- y (vec2-y camera)))))
-    (set! text (format #f "~d, ~d" tx ty))))
-
-(run-game #:window-width 640
-          #:window-height 480
-          #:window-title "tile map demo"
-          #:load load
-          #:draw draw
-          #:update update
-          #:key-press key-press
-          #:mouse-move mouse-move)
-- 
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