SPIGOT-2646: MapFont.getWidth with coloured text

By: md_5 <git@md-5.net>

paper-api/src/main/java/org/bukkit/map/MapFont.java

@@ -1,6 +1,7 @@
 package org.bukkit.map;
 
 import java.util.HashMap;
+import org.bukkit.ChatColor;
 
 /**
  * Represents a bitmap font drawable to a map.
@@ -58,7 +59,9 @@ public class MapFont {
 
         int result = 0;
         for (int i = 0; i < text.length(); ++i) {
-            result += chars.get(text.charAt(i)).getWidth();
+            char ch = text.charAt(i);
+            if (ch == ChatColor.COLOR_CHAR) continue;
+            result += chars.get(ch).getWidth();
         }
         result += text.length() - 1; // Account for 1px spacing between characters
 
@@ -84,7 +87,7 @@ public class MapFont {
     public boolean isValid(String text) {
         for (int i = 0; i < text.length(); ++i) {
             char ch = text.charAt(i);
-            if (ch == '\u00A7' || ch == '\n') continue;
+            if (ch == ChatColor.COLOR_CHAR || ch == '\n') continue;
             if (chars.get(ch) == null) return false;
         }
         return true;