Add proper nullity checks for task name and location

runelite-client/src/main/java/net/runelite/client/plugins/slayer/SlayerPlugin.java

@@ -242,8 +242,7 @@ public class SlayerPlugin extends Plugin
 
 		clientToolbar.addNavigation(navButton);
 
-		if (client.getGameState() == GameState.LOGGED_IN
+		if (config.amount() != -1
-			&& config.amount() != -1
 			&& !config.taskName().isEmpty())
 		{
 			points = config.points();
@@ -283,24 +282,8 @@ public class SlayerPlugin extends Plugin
 		{
 			case HOPPING:
 			case LOGGING_IN:
-				cachedXp = 0;
-				currentTask = new TaskData(0, 0, 0,0, 0, "", "", true);
-				loginFlag = true;
 				highlightedTargets.clear();
 				break;
-			case LOGGED_IN:
-				if (config.amount() != -1
-					&& !config.taskName().isEmpty()
-					&& loginFlag)
-				{
-					points = config.points();
-					streak = config.streak();
-					setExpeditiousChargeCount(config.expeditious());
-					setSlaughterChargeCount(config.slaughter());
-					setTask(config.taskName(), config.amount(), config.initialAmount(), true, config.taskLocation());
-					loginFlag = false;
-				}
-				break;
 		}
 	}
 
@@ -341,6 +324,11 @@ public class SlayerPlugin extends Plugin
 	// (and close npc dialog) or go into the rewards screen which also closes npc dialog
 	private boolean canMatchDialog = true;
 
+	// rising edge detection isn't enough for some reason (don't know why) so in addition to a rising edge rather than
+	// instantly allowing for another assignment we'll do a 2 tick refractory period
+	private static final int FORCED_WAIT = 2;
+	private int forcedWait = -1;
+
 	@Subscribe
 	public void onGameTick(GameTick tick)
 	{
@@ -360,12 +348,14 @@ public class SlayerPlugin extends Plugin
 				String location = mAssign.group("location");
 				setTask(name, amount, amount, true, location);
 				canMatchDialog = false;
+				forcedWait = FORCED_WAIT;
 			}
 			else if (mAssignFirst.find())
 			{
 				int amount = Integer.parseInt(mAssignFirst.group(2));
 				setTask(mAssignFirst.group(1), amount, amount, true);
 				canMatchDialog = false;
+				forcedWait = FORCED_WAIT;
 			}
 			else if (mAssignBoss.find())
 			{
@@ -373,6 +363,7 @@ public class SlayerPlugin extends Plugin
 				setTask(mAssignBoss.group(1), amount, amount, true);
 				points = Integer.parseInt(mAssignBoss.group(3).replaceAll(",", ""));
 				canMatchDialog = false;
+				forcedWait = FORCED_WAIT;
 			}
 			else if (mCurrent.find())
 			{
@@ -381,9 +372,16 @@ public class SlayerPlugin extends Plugin
 				String location = mCurrent.group("location");
 				setTask(name, amount, currentTask.getInitialAmount(), false, location);
 				canMatchDialog = false;
+				forcedWait = FORCED_WAIT;
 			}
-		} else if (npcDialog == null) {
+		}
-			canMatchDialog = true;
+		else if (npcDialog == null)
+		{
+			if (forcedWait <= 0)
+			{
+				canMatchDialog = true;
+			}
+			forcedWait--;
 		}
 
 		Widget braceletBreakWidget = client.getWidget(WidgetInfo.DIALOG_SPRITE_TEXT);

runelite-client/src/main/java/net/runelite/client/plugins/slayer/SlayerTaskPanel.java

@@ -237,7 +237,7 @@ public class SlayerTaskPanel extends PluginPanel
 
 	private static boolean isEmptyTask(TaskData taskData)
 	{
-		return taskData.getTaskName().equals("") && taskData.getAmount() == 0 && taskData.getInitialAmount() == 0;
+		return (taskData.getTaskName() == null || taskData.getTaskName().equals("")) && taskData.getAmount() == 0 && taskData.getInitialAmount() == 0;
 	}
 
 	private void showMainView()
@@ -255,6 +255,23 @@ public class SlayerTaskPanel extends PluginPanel
 		return newBox;
 	}
 
+	private boolean stringsEqualIncludeNull(String str0, String str1)
+	{
+		if (str0 == null && str1 == null)
+		{
+			return true; // both are null
+		}
+		else if (str0 == null || str1 == null)
+		{
+			return false; // only 1 is null
+		}
+		else
+		{
+			// none are null so equals check is safe
+			return str0.equals(str1);
+		}
+	}
+
 	void updateCurrentTask(boolean updated, boolean paused, TaskData newData, boolean isNewAssignment)
 	{
 		// important case for if the current task is completed so the update will show the empty task
@@ -294,9 +311,9 @@ public class SlayerTaskPanel extends PluginPanel
 			// if here there is a current task so check if the current task matches
 			// the update being sent
 			TaskBox current = tasks.get(0);
-			if (!current.getTaskData().getTaskName().equals(newData.getTaskName()) ||
+			if (!stringsEqualIncludeNull(current.getTaskData().getTaskName(), newData.getTaskName()) ||
-					!current.getTaskData().getTaskLocation().equals(newData.getTaskLocation()) ||
+				!stringsEqualIncludeNull(current.getTaskData().getTaskLocation(), newData.getTaskLocation()) ||
-					current.getTaskData().getInitialAmount() != newData.getInitialAmount())
+				current.getTaskData().getInitialAmount() != newData.getInitialAmount())
 			{
 				// current task does not match the update being sent so the current task
 				// must have been outdated - this is necessarily true because if a true