Fix ColorInit and CustomMap deprecation warnings

LobbySystem/build.gradle.kts

@@ -19,6 +19,7 @@
 
 plugins {
     steamwar.java
+    widener
 }
 
 dependencies {
@@ -32,6 +33,11 @@ dependencies {
     compileOnly(libs.fawe)
 }
 
+widener {
+    fromCatalog(libs.nms)
+    fromCatalog(libs.paperapi)
+}
+
 tasks.register<DevServer>("DevLobby20") {
     group = "run"
     description = "Run a 1.20 Dev Lobby"

LobbySystem/src/de/steamwar/lobby/map/ColorInit.java

@@ -42,7 +42,7 @@ public class ColorInit {
         if (inputStream == null) {
             colors = new byte[256 * 256 * 256];
             for (int i = 0; i < colors.length; i++) {
-                colors[i] = MapPalette.matchColor(new Color(i));
+                colors[i] = matchColor(new Color(i));
             }
         } else {
             try {
@@ -57,4 +57,26 @@ public class ColorInit {
         }
         System.out.println("[ColorInit] Initialization took " + (System.currentTimeMillis() - time) + "ms");
     }
+
+    public static byte matchColor(Color color) {
+        if (color.getAlpha() < 128) return 0;
+
+        if (MapPalette.mapColorCache != null && MapPalette.mapColorCache.isCached()) {
+            return MapPalette.mapColorCache.matchColor(color);
+        }
+
+        int index = 0;
+        double best = -1;
+
+        for (int i = 4; i < MapPalette.colors.length; i++) {
+            double distance = MapPalette.getDistance(color, MapPalette.colors[i]);
+            if (distance < best || best == -1) {
+                best = distance;
+                index = i;
+            }
+        }
+
+        // Minecraft has 248 colors, some of which have negative byte representations
+        return (byte) (index < 128 ? index : -129 + (index - 127));
+    }
 }

LobbySystem/src/de/steamwar/lobby/map/CustomMap.java

@@ -254,7 +254,8 @@ public class CustomMap implements Listener {
                 int green = pixels[i2];
                 int i3 = (y * width + x) * numBands + 2;
                 int blue = pixels[i3];
-                Color nearest = MapPalette.getColor(ColorInit.getColorByte(red, green, blue));
+                int colorIndex = ColorInit.getColorByte(red, green, blue);
+                Color nearest = MapPalette.colors[colorIndex >= 0 ? colorIndex : colorIndex + 256];
 
                 pixels[(y * width + x) * numBands] = nearest.getRed();
                 pixels[i2] = nearest.getGreen();

LobbySystem/src/lobby.accesswidener

@@ -0,0 +1,6 @@
+accessWidener v2 named
+
+# For CustomMap and ColorInit
+accessible field org/bukkit/map/MapPalette colors [Ljava/awt/Color;
+accessible method org/bukkit/map/MapPalette getDistance (Ljava/awt/Color;Ljava/awt/Color;)D
+accessible field org/bukkit/map/MapPalette mapColorCache Lorg/bukkit/map/MapPalette$MapColorCache;