Add support for 1.20 (#35)

* Update BukkitPluginMessageSender.java

* Keep 1.17-1.19 support

* Fixed version check

* Fixed spaces instead of tabs

---------

Co-authored-by: PSNRigner <[email protected]>

Author: Budderman18

bukkit-1.17/src/main/java/net/badlion/bukkitapi/BukkitPluginMessageSender.java

@@ -121,7 +121,12 @@ public BukkitPluginMessageSender(AbstractBukkitBadlionPlugin apiBukkit) {
 			throw new RuntimeException("Failed to find CraftPlayer.getHandle()");
 		}
 
-		this.playerConnectionField = this.getField(nmsPlayerClass, "b");
+		if (this.versionSuffix.contains("v1_17") || this.versionSuffix.contains("v1_18") || this.versionSuffix.contains("v1_19")) {
+			this.playerConnectionField = this.getField(nmsPlayerClass, "b");
+		} else {
+			this.playerConnectionField = this.getField(nmsPlayerClass, "c");
+		}
+
 		if (this.playerConnectionField == null) {
 			throw new RuntimeException("Failed to find EntityPlayer.playerConnection");
 		}
@@ -220,4 +225,4 @@ public Field getField(Class<?> clazz, String fieldName) {
 
 		return null;
 	}
-}
+}