Simple Waypoint System (SWS) - Move objects along paths

Thanks @Justin-Wasilenko, will do! I chatted with Daniele yesterday. For now you can simply delete the DOTween folder in SWS and import the new version

 

Hi. I'm getting this error every time I press "P" to place a new waypoint.

NullReferenceException: Object reference not set to an instance of an object
SWS.WaypointEditor.OnSceneGUI () (at Assets/SWS/Scripts/Editor/WaypointEditor.cs:62)
System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222)
Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.
System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:232)
System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MethodBase.cs:115)
UnityEditor.SceneView.CallOnSceneGUI () (at C:/buildslave/unity/build/Editor/Mono/SceneView/SceneView.cs:2392)
UnityEditor.SceneView.HandleSelectionAndOnSceneGUI () (at C:/buildslave/unity/build/Editor/Mono/SceneView/SceneView.cs:1721)
UnityEditor.SceneView.OnGUI () (at C:/buildslave/unity/build/Editor/Mono/SceneView/SceneView.cs:1553)
System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222)
Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.
System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:232)
System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MethodBase.cs:115)
UnityEditor.HostView.Invoke (System.String methodName, System.Object obj) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:272)
UnityEditor.HostView.Invoke (System.String methodName) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:265)
UnityEditor.HostView.InvokeOnGUI (Rect onGUIPosition) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:232)

 

Hi @username132323232, does this happen in a new or your existing project only? Do you have one SceneView window or multiple SceneView windows in your layout? Which Unity and SWS version and any other steps for me to reproduce this?

 

Thanks Baroni!

1) Existing project, but a new scene.
2) One SceneView.
3) Unity 2017.1.0f3, SWS 5.4

No other steps. I just followed your 60-seconds video. It worked a couple of days ago in the same project. I know it's weird

 

Thanks @username132323232, mmmh could you try to close Unity, delete the Library folder of your project then start it up again, to see if that changes something?

 

Tried that and also created a completely new project with the same results. The script variable is null in OnSceneGUI().

 

Not quite sure how the script reference is not initialized in OnInspectorGUI for you, as that should be called before OnSceneGUI. Is OnInspectorGUI not called at all? Going to investigate in a new project tomorrow as well.

 

I put Debug.Log() in OnInspectorGUI() and in OnSceneGUI(). Here is the output:




I know how difficult it is to debug this kind of problem remotely, so please let me know if there's any way I can help.

 

@username132323232 imported SWS 5.4 in a new Unity 2017.1.0f3 project, added Waypoint Manager to the scene, tried both 2D and 3D paths, works as expected... could we please continue this over email and could you please send me your Unity project folder as a zip, where the error happens (e.g. the new project you've created) along with a screenshot of your full editor layout at the moment the error happens. Thanks!

 

Hi, I've been digging through the forum posts and example code, but despite that I'm still having a lot of trouble trying to create events at runtime.

Basically I have a bike looping endlessly on path01. It transitions to path02 (transition path) on a keystroke. Then I want it to transition to path03 once it reaches the end of path02 (and then loop endlessly on path03). Since events are called on the mover and not the path, I cannot create events for path02 (unless I do it at runtime).

My attempt:

Code (CSharp):

1. void CreatePathEvent()
2.     {
3.         UnityEvent myEvent = pathEvents.moveRef.events[8];
4.         myEvent.SetPath(WaypointManager.Paths[bikePaths.pathName3])
5.     }

^This code is wrong obviously, but not being a coder, I'm kinda lost here =(
What I want is to make an event where path02 waypoint 8 (the last waypoint) will transition the bike to path03.

Any help would be appreciated.
Thanks!

 

Hi @DChap,

example 6 in the RuntimeDemo script would be what you are looking for, if you are going the route of movement script events. Something along the lines of:

Code (csharp):

1. myEvent.AddListener(delegate{pathEvents.moveRef.SetPath(WaypointManager.Paths[bikePaths.pathName3]);});

There is no need to do that via events though. You could just add a collider to the last waypoint of the path, which has a script (or script with a UnityEvent) on it that calls SetPath on the movement script triggering it. An example for this (collider triggering event) is in the Example5_Events scene as well.

 

I'm pretty sure it has something to do with my setup, otherwise everyone would be complaining. I was already about to email you the zip file, but then tried a workaround: edit an existing path taken from one of the example scenes. That worked, so problem solved as far as I'm concerned Thanks for trying to help. SWS rocks!

 

@username132323232 I'm not really happy with the workaround you are doing - I would still like to investigate your project setup, in case someone runs into this as well in the future, if you find the time to send me your project zip.

 

No problem. Do you prefer your website email or a private message to your Unity inbox?

 

Website email

 

Emailed yesterday. Did you receive it?

Also, is it possible to stop the object for a few seconds at each waypoint?

 

No, I didn't receive any email from you @username132323232. Have you sent the email to info [at] rebound-games [dot] com?

For stopping at a waypoint for some time (which means pausing), you could use the Pause method on the movement script, that takes a float parameter (time in seconds), added as an event to the waypoint.

 

Yes. I emailed you another message without the project zip file a minute ago. Please let me know if you received that.

That's perfect! Your Events system is pretty cool. I think you should rename SWS to "Simple to use, but very powerful Waypoint System"

 

I need an object to move to a certain waypoint, and stop.
But I can not find such a method in SplineMove, there is only GotoWaypoint() which instantly teleports the object to the given waypoint (wrapper over DoTween.GotoWaypoint).

 

@hottabych There are several ways to do that:
- you could set the 'startPoint' to the desired waypoint, and add an event on the movement script at runtime, which calls Stop() at this waypoint. Just set 'moveToPath' to true and call StartMove() on the movement script as usual.
- you could set the 'startPoint' like above, but add a collider to the waypoint which triggers Stop() on the movement script, when colliding (instead of using events).

Both options and code snippets are showcased in the Events sample scene.

 

Hey folks, first - congratulations to the great asset. Saved me a lot of time and nerves. I just wonder. Can start the movement based on an event? like clicking on the item-to-move and THEN it starts moving? After finishing I can click again? Hope I'm missing something or being too stupid for the search ^^

 

Hi @MartinGebske, sure, disable "OnStart" on the movement script in the inspector and call StartMove() on it whenever you like. There are actually several samples for runtime controls in the runtime example scene.

 

Darn... This was too obvious for me x)) Thanks a lot!!

 

How to change speed, ease runtimes ?! Thanks

 

@vudong
movementScript.ChangeSpeed(float value)

 

Do you know how to find the nearest segment if you have an arbitrary Vecotr3?

 

@teiadev there is no function built in for that, but a feasible way would be to loop over the waypoints array of the path manager and do a Vector3.Distance check for them. Bezier paths also have a path points list, which holds all of the single "dots" on segments, so you would be able to find a more or less exact position on that between segments too.

 

I am just drawing a simple curved line, but I want to move it with the parent object. Is there somewhere I can do a transform.transformpoint or similar to fix this?

 

@Redrag not sure how you are drawing the curve, so if it's with a LineRenderer, you would need to update the points you are feeding into it. Parenting the path to your moving object should be sufficient to recalculate the path points. There is a sample included (in the advanced scene) which shows a ball following a rotating path, so that might help as well.

 

Hi,

can I get the whole length of the path and a specific point on the path by the distance from the start with your plugin? let's say we have a curved path, and its length is 100 and we want to get the pointing vector of which has a distance of 30 from the start on the path, really need that. Can we do that? thanks.

 

Hi @armnotstrong, if an object is moving on a path (so the path is initialized), you can get the Vector3 at a specific distance via the underlying DOTween tween properties. There's the tween.PathGetPoint method, which returns the Vector3 at a specific percentage of the path. So if your path has the length of 100, and you would like to get the Vector3 at the distance of 30, that would be PathGetPoint(0.3f).

 

I missed the fact that you need to restart after clicking on ' On Update'.

However, now I have found in runtime, the positions only update when I click the gameobject which has the scripts (In inspector). It then updates once then stops until I click away then back again. Any ideas?

 

@Redrag If you are using bezier paths, the BezierPathManager has a method (CalculatePath, see the scripting reference) for updating the path points at runtime. It doesn't update automatically because of performance reasons. Default PathManagers don't have this, since their paths are calculated by the objects moving on them directly at tween initialization.

 

OK - I have changed to PathManager and all working correctly now. Many thanks.

 

Not sure what I'm missing, but I'm trying to move an object along a square path in which I've disabled "draw smooth lines" in the path editor, yet in runtime, it reverts back to bezier curves. I assume that feature is strictly for editor view only.

What do I need to do in order to have it stay as straight lines in runtime without creating a bunch more nodes (I'm also using playmaker).

 

@Giga_Steve correct, "draw smooth lines" does not affect the path, that's for editor visualization only. For a straight path, you would not use bezier paths (as they have more points by definition), but the default standard path. In the movement script on your object, you can then choose path type = linear.

 

Wonderful, thanks! I even saw that option early and totally blanked on it, haha. Works like a charm.

 

I'm trying to set up waypoints around a 3D town. I want to have pauses when vehicles reach junctions and will be sending them in random directions when they have multiple turning options. I have looked at the examples but I don't see where waypoint pauses are specified or how to make random waypoints. What am I missing? Thanks in advance

 

@Laniemme delays can either be added

• directly in the movement script, by expanding the events section and adding its Pause(seconds) method at the desired waypoint(s) - see the events example scene for a sample
• at runtime via code, by adding the movement script's Pause(seconds) method to the events list at a specific waypoint - see the events example scene as well
• triggered by a collider, when your object touches it, you would call Pause(seconds) on the colliding movement script - events example scene too

For junctions, you will need to know the path name and waypoint index your object will move to next. Using this information, you can set the startPoint value on the movement script to the new waypoint index, and call SetPath on it by passing in the new path component.

 

Hello Baroni. I'm having an issue with SetPath. I'm calling moveToPath = true, and startPoint = 0 before calling set path. my splinemover has a bad transform "bounce" once it reaches the 2nd waypoint. It bounces and returns to waypoint 0 once it reaches waypoint 1. Any idea what I could be doing wrong? Appreciate any help

 

Hi @four-d-oz, I'm usually bad at guessing - to save some time, could you please send a small repro project to our support email (found on our website, or last page in documentation pdf), so I can take a look at your setup directly.

 

Hi.
wanted to know, how are those obstacles there.
if the program does not show them in the hierarchy lable.
I can make my soldiers avoid obstacles.

in other words:
it is obvious that there is an obstacle there. (seen in the video)
but I can not find it anywhere,
my question is how can I do to create those obstacles please.
I tried and I did not succeed.
please help.

 

While I can't look into your project and make a guess by watching a video, it seems that you are using the navMove movement script on these soldiers? Have a look at the NavMesh then, which may needs a rebake.

 

please ....
how instantiate a prebab walker that include already the path please ?
.

 

@fla-rar paths are bound to the scene. You cannot assign scene objects to prefabs. If you instantiate a prefab with a movement script, you can call SetPath on it to assign the path, but disable "OnStart" in the inspector first.

 

Thanks .... ! i will try !

 

sorry ...
just to know ... if you have some basic manual to use it ?
i search on internet but the link send another place.
but basic, i need to know the different
standar and bezier please
.

 

@fla-rar please see the documentation pdf included in the SWS folder for a basic manual and differences on standard and bezier paths. You can also just create both of them and see the difference yourself - standard paths are basic curves, while bezier paths have several more points and allow for detailed definition of their segments. Also, Wikipedia provides great information for both type of curves.

 

thanks so much ... ...
i didnt know the pdf manual .. thansk so much, i apreciate !

 

Hello @Baroni ,

just a quick one. My "move to path" speed of an object is ridiculously low compared to the speed (time value: speed) of movement between the paths. Is there any way of adjusting it? Or is it the same as speed of movement between paths and i'm doing something wrong? It's a 2D game, everything's set on Z: 1, including paths.