camera: add option to preserve yaw when world hopping

runelite-client/src/main/java/net/runelite/client/plugins/camera/CameraConfig.java

@@ -191,4 +191,15 @@ public interface CameraConfig extends Config
 	{
 		return false;
 	}
+
+	@ConfigItem(
+		keyName = "preserveYaw",
+		name = "Preserve yaw on world hop",
+		description = "Preserves the camera yaw (left/right) when world hopping.",
+		position = 14
+	)
+	default boolean preserveYaw()
+	{
+		return false;
+	}
 }

runelite-client/src/main/java/net/runelite/client/plugins/camera/CameraPlugin.java

@@ -43,6 +43,7 @@ import net.runelite.api.VarPlayer;
 import net.runelite.api.events.BeforeRender;
 import net.runelite.api.events.ClientTick;
 import net.runelite.api.events.FocusChanged;
+import net.runelite.api.events.GameStateChanged;
 import net.runelite.api.events.MenuEntryAdded;
 import net.runelite.api.events.ScriptCallbackEvent;
 import net.runelite.api.events.ScriptPreFired;
@@ -89,7 +90,8 @@ public class CameraPlugin extends Plugin implements KeyListener, MouseListener
 	 * Whether or not the current menu has any non-ignored menu entries
 	 */
 	private boolean menuHasEntries;
-	
+	private int savedCameraYaw;
+
 	@Inject
 	private Client client;
 
@@ -418,6 +420,24 @@ public class CameraPlugin extends Plugin implements KeyListener, MouseListener
 		}
 	}
 
+	@Subscribe
+	public void onGameStateChanged(GameStateChanged gameStateChanged)
+	{
+		switch (gameStateChanged.getGameState())
+		{
+			case HOPPING:
+				savedCameraYaw = client.getMapAngle();
+				break;
+			case LOGGED_IN:
+				if (savedCameraYaw != 0 && config.preserveYaw())
+				{
+					client.setCameraYawTarget(savedCameraYaw);
+				}
+				savedCameraYaw = 0;
+				break;
+		}
+	}
+
 	/**
 	 * The event that is triggered when a mouse button is pressed
 	 * In this method the right click is changed to a middle-click to enable rotating the camera