Add new layer detection to keep colors mapped correctly.

abase-sprite.lua

@@ -1,4 +1,28 @@
 -- Functions for modifying a sprite
+
+local BASE_COLOR = Color {
+    r = 0,
+    g = 0,
+    b = 0,
+    a = 0
+}
+local IGNORE_COLOR = Color {
+    gray = 100
+}
+local IGNORE_SUBCOLOR = Color {
+    gray = 150
+}
+local MERGE_COLOR = Color {
+    r = 200,
+    g = 200,
+    b = 0
+}
+local MERGE_SUBCOLOR = Color {
+    r = 200,
+    g = 200,
+    b = 128
+}
+
 -- Deletes any layers with the 'ignored' property.
 local function deleteLayers(spr, layers)
     for i, layer in ipairs(layers) do
@@ -44,9 +68,35 @@ local function revealLayers(layers)
     end
 end
 
+-- set the color of a layer and its sublayers
+local function setColor(layer, subColor)
+    if (layer.properties(extKey).ignored) then
+        layer.color = IGNORE_COLOR
+        subColor = IGNORE_SUBCOLOR
+    elseif subColor == IGNORE_SUBCOLOR then
+        layer.color = subColor
+    elseif (layer.properties(extKey).exportedAsSprite) then
+        layer.color = MERGE_COLOR
+        subColor = MERGE_SUBCOLOR
+    elseif subColor == MERGE_SUBCOLOR then
+        layer.color = subColor
+    else
+        layer.color = BASE_COLOR
+    end
+
+    if (layer.isGroup) then
+        for i, sublayer in ipairs(layer.layers) do
+            setColor(sublayer, subColor)
+        end
+    end
+end
+
+
+
 local export = {
     deleteLayers = deleteLayers,
     flattenLayers = flattenLayers,
-    revealLayers = revealLayers
+    revealLayers = revealLayers,
+    setColor = setColor,
 }
 return export