[Reviewed] [Recolorizer] Avoid to process transparent pixels (#1005)

Author: D8H

extensions/reviewed/Recolorizer.json

@@ -8,7 +8,7 @@
   "name": "Recolorizer",
   "previewIconUrl": "https://resources.gdevelop-app.com/assets/Icons/Line Hero Pack/Master/SVG/Graphic Design/Graphic Design_color_colour_palette_paint_brush.svg",
   "shortDescription": "Independently change the colors of a sprite, a tiled sprite or a panel sprite.",
-  "version": "0.1.2",
+  "version": "0.1.3",
   "description": [
     "This extension allows to restyle a sprite, a tiled sprite or a panel sprite.",
     "",
@@ -205,6 +205,10 @@
                 "    const hueIsConstrained = hueScope < 0.5;",
                 "",
                 "    for (let i = 0; i < sourcePixels.length; i += 4) {",
+                "        const alpha = sourcePixels[i + 3];",
+                "        if (alpha === 0) {",
+                "            continue;",
+                "        }",
                 "        const pixelHsl = rgbToHsl(sourcePixels[i + 0], sourcePixels[i + 1], sourcePixels[i + 2]);",
                 "",
                 "        const pixelHue = pixelHsl[0];",
@@ -734,8 +738,7 @@
                 "textG": 0,
                 "textR": 0
               },
-              "comment": "Unsure that destroyed instance recolorization can be free.",
-              "comment2": ""
+              "comment": "Unsure that destroyed instance recolorization can be free."
             },
             {
               "type": "BuiltinCommonInstructions::Standard",
@@ -1005,8 +1008,7 @@
                 "textG": 0,
                 "textR": 0
               },
-              "comment": "Unsure that destroyed instance recolorization can be free.",
-              "comment2": ""
+              "comment": "Unsure that destroyed instance recolorization can be free."
             },
             {
               "type": "BuiltinCommonInstructions::Standard",
@@ -1285,8 +1287,7 @@
                 "textG": 0,
                 "textR": 0
               },
-              "comment": "Unsure that destroyed instance recolorization can be free.",
-              "comment2": ""
+              "comment": "Unsure that destroyed instance recolorization can be free."
             },
             {
               "type": "BuiltinCommonInstructions::Standard",