dashed lines

source/scripts/debug.js

@@ -8,8 +8,9 @@ var Gizmos = {
 
 
 var Debug = {
-  draw_grid(width, span) {
-    cmd(47, width, span);
+  draw_grid(width, span, color) {
+    color = color ? color : Color.green;
+    cmd(47, width, span, color);
   },
   
   point(pos, size, color) {

source/scripts/engine.js

@@ -116,13 +116,13 @@ var Window = {
 };
 
 var Color = {
-  white: [255,255,255],
-  blue: [84,110,255],
-  green: [120,255,10],
-  yellow: [251,255,43],
-  red: [255,36,20],
-  teal: [96, 252, 237],
-  gray: [181, 181,181],
+  white: [255,255,255,255],
+  blue: [84,110,255,255],
+  green: [120,255,10,255],
+  yellow: [251,255,43,255],
+  red: [255,36,20,255],
+  teal: [96, 252, 237,255],
+  gray: [181, 181,181,255],
 };
 
 var GUI = {