From 415322b3baf0903f9a45c9abeb2775949c406fa1 Mon Sep 17 00:00:00 2001
From: HF <hf@pixelplanet.fun>
Date: Sat, 9 Jul 2022 17:13:09 +0200
Subject: [PATCH] fix left-shift for admin unset-pixels painting

---
 src/controls/PixelPainterControls.js | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/controls/PixelPainterControls.js b/src/controls/PixelPainterControls.js
index 32318808..8312e2e1 100644
--- a/src/controls/PixelPainterControls.js
+++ b/src/controls/PixelPainterControls.js
@@ -187,6 +187,7 @@ class PixelPlainterControls {
   static placePixel(store, renderer, cell, colorIndex = null) {
     const state = store.getState();
     const { autoZoomIn } = state.gui;
+    const { clrIgnore } = state.canvas;
     const {
       scale,
       isHistoricalView,
@@ -210,6 +211,20 @@ class PixelPlainterControls {
     if (selectedColor === curColor) {
       return;
     }
+
+    // placing unset pixel
+    if (selectedColor < clrIgnore) {
+      const { palette } = state.canvas;
+      const { rgb } = palette;
+      let clrOffset = selectedColor * 3;
+      const r = rgb[clrOffset++];
+      const g = rgb[clrOffset++];
+      const b = rgb[clrOffset];
+      if (palette.getIndexOfColor(r, g, b) === curColor) {
+        return;
+      }
+    }
+
     const { canvasSize } = state.canvas;
     const [x, y] = cell;
     const maxCoords = canvasSize / 2;