I'm trying to figure out a good way to script the NPCs in my RPG. A sample NPC interaction could go something like this:
NPC starts dialog #1 with player.
When the dialog is finished, the NPC moves to a waypoint on the map.
Once the NPC arrives at the waypoint and the player talks to him again, he starts dialog #2.
At the end of the dialog, the NPC asks a question.
If the player gives response A, the dialog ends. In this case, talking to the NPC again starts dialog #2 again.
If the player gives response B, the NPC gives an item to the player, and disappears. From now on, that same NPC will be present in a different Unity scene.
I've found plenty of examples of making a dialog tree, but I can't find a good way to handle complex situations like that. One of the most challenging problems is to determine which scene -- and where in the scene -- that NPC is. Depending on how far along the player is in the game, that NPC could be in any one of many different scenes, and will have different dialog and behavior.
Since Unity makes it easy to attach a script to my NPC's game object, I could of course do this all through a C# script. However, that script will get pretty big and messy for important NPCs.
The path that I've gone down so far is to create an XML file. Something like this:
<AgentAi>
<ActionGroup>
<Dialog>
<Statement>Hi!</Statement>
<Statement>Follow me.</Statement>
</Dialog>
<MoveTo>Waypoint_1</MoveTo>
<SetNpcState>NpcGreetedPlayer</SetNpcState>
</ActionGroup>
<ActionGroup>
<Conditions>
<State>NpcGreetedPlayer</State>
</Conditions>
<Dialog>
<Statement>Here, take this.</Statement>
</Dialog>
<AddItem>Dagger</AddItem>
<MoveTo>Waypoint_2</MoveTo>
</ActionGroup>
</AgentAi>
That sample would cause the NPC to greet the player and move to another spot. Then when the player talks to him again, the NPC will give the player a dagger and move to another waypoint.
The problem with the XML is that I'm worried about it growing very large for important NPC that can be in a lot of different places depending on where the player is in the game. I'd have to keep dynamically determining which NPCs are in a scene each time I load a new scene. I'm not totally against doing it with XML like this, but I don't want to waste a bunch of time heading down this road if there's a better way of doing it.
Since this type of behavior is common in a lot of games, is there a good way of doing it in Unity without having to homebrew my own complex system?
Normal software systems would use a database, once the level of complexity gets too high.
I'd setup the storyline with a numeric reference, like the pages of a book.
If they go to a higher number without interacting then the interaction is still available.
Then you can setup each interaction as a separate thing, with a start and finish number (not available before and not available after).
maybe you could do this by making the xml files separate, but I'd think you still need to tie them into the storyline.
Related
I'm working on a VR project in Unreal and I'd like my player hands to form to certain objects whenever the user grabs them. (I.e. the way our hands work) Unfortunately, I haven't really found any examples online of others doing this.
For example, I'd like when the user picks up say a hand held tool like a hammer that the hand would wrap around the handle. When the user grabs a basketball the hand shouldn't be closed but, expanded like a you would if you were to palm a basketball in real life.
I haven't done a lot of testing with this but, I'm pretty sure since the hands are based off of a Animation Blueprint that they simply ignore collisions and follow the animation.
I guess the simplest solution would probably be based off of collision where the hand plays an animation and as the fingers of the hand wrap around the object they stop at that position where they collide with the object in question. If it is even possible that is.
I'm using Unity3D for a networked multiplayer online game where I have a very large complex 3D terrain scene like a forest, with trees, cliff, hills, mountains, bounders, etc.
Players can also build structures sort of like minecraft, and put them anywhere in the scene, or even move them around anytime.
Aside from the human controlled players, there are automated AI players and objects like animals roaming around the scene following a path.
The problem is how to make these automated AI players and animals, able to navigate around the static and dynamic player created structures, because the path they follow can easily get blocked by player created structures, or even by other players and other AI objects, cliffs etc. So they have to find away around them or get themselves back on track if they tumble down off a high cliff for example.
So I made a navMesh and used NavAgents, but that just takes care of the static, non moving objects, but how do I make the AI players navigate around each other and also the dynamic structures created by the players which can number in the hundreds?
I thought of adding a NavMeshObstacle to everything, but this would result in it being attached to hundreds of objects since the user created structures are built using little pieces like blocks or little tiles to create a larger object.
Here are my questions:
Would attaching a NavMeshObstacle to hundreds of little objects slow down the game?
Is there another way to navigate of dynamic objects other than using NavMeshObstable without slowing down the networked game?
Thanks
Based on the documentation for NavMeshObstacle, one could reasonably assume that if carving (an obstacle "carving" a piece out of the nav mesh) is disabled, obstacles will only affect agent performance when they are in the agent's way. They won't affect pathfinding. The agent will just go around them when it's close. Note that this will not work for you if there are so many dynamic obstacles that the agents need a very different path. You can also set them to re-carve a piece out of the nav mesh only when they've moved a certain amount. You should test the performance, but that sounds like it might work well for you.
http://docs.unity3d.com/ScriptReference/NavMeshObstacle.html
If you don't want to spend much time on making your own "sensor and navigation" system extending unity's navigation then I think your way is through NavMeshObstacles. If you build your obstacles with blocks like minecraft to avoid add NavMeshObstacle on each block you have a huge range of choices on how to limit/approach on your building system.
There is also good AI systems free as RAIN, for example, that implements some extensible and consistent way to do what you want, take a look on unity market if anything there fits your needs.
Ok, so I'm trying to implement networking for a school project. (Part of my team's final project)
It's supposed to operate on a turn-based system. IE, when a player is done, they hit "next turn" and they lose control, while the other player gains control.
So, to test my networking and get the basics going, I've made a little program that spawns a cube whenever a server is joined or created (so one cube for each player), and each player is able to move only their own cube.
So far, I can have the cubes moving around and their transforms are perfectly synced up on both instances of the game simultaneously, and each player can only control their own cube.
However, when I click "Next turn", the turn only changes on ONE of the instances.
According to this, it SHOULD be watching the turn change:
And this is my turncontrol code (It's a little sloppy for now until I find a hardcore way to set the code's player number depending on whether they're the host or client)
How the heck do I make sure that when I click "Next Turn", the turn changes in both instances, and how do I make sure that the cube's player number is dependent on whether they're the host or client?
That and I have the very strong suspicion that the assignment of a player's "player number" (IE, whether they're player 1 or 2) is being assigned locally (Not reflected across instances) as well, since each player can only move when the turn is set to 1 (Meaning that when both players spawn, they're both set to be player 1. :s)
Any assistance would be appreciated. Networking is completely new to me and I'm wigging out trying to wrap my head around it.
I am making a game using a combination of Blender and Unity and have hit a wall. I am trying to make it so a lamp flies off of a table and smashes against a wall once the player walks past a certain point in the map.
I am having a hard time with this. Any help is appreciated.
You need to break this up into little parts.
The first part is that once the player walks past a certain point you want to do something. To do this, look at http://docs.unity3d.com/ScriptReference/Collider.OnTriggerEnter.html
An on trigger event will let you run some code when an object collides with another object. In your case, when your player collides with a certain point in the game.
Next, inside that OnTriggerEvent, you want to fire the lamp off the table. To best do this, create a keyframe animation (or whatever you're most comfortable with) that animates the lamp to fly off the table. Lastly, play that animation in the trigger event. http://unity3d.com/learn/tutorials/modules/beginner/animation
To summarize, when the user hits a certain point, play an animation on the lamp.
first time posting on stack and everything looks promising so far! I had a bit of a complicated question here so I'll do my best to provide exact details of what I'd like to get accomplished. I'm working with a third person controller in unity, so far everything is going great. I've dabbled with basic up and down platforms, a little glitchy but things work. Anytime my player runs through a mesh I make sure the mesh collider is working and a 'rigid-body' is attached set to Kinematic. Here's the kicker, in my game I have turning gears which the player can jump on. This is great except for the player doesn't turn with my gear, which would make sense according to my game-play. What would be the process for getting my character to interact with this animated mesh? I imagine some sort of script which my nooby mind cannot fathom at this point in my unity career. If anyone out there knows the solution to this, I would love to have any assistance, either way I'll plugging away at a solution. Thanks again!!
This is assuming that you're using the packages that ship with Unity3D, which it sounds like you are. After importing the Character Controllers package, you'll have a bunch of scripts in the Standard Assets\Character Controllers\Sources\Scripts folder, in the project hierarchy view. There's a script in there called CharacterMotor.js, attach that to the same GameObject you're running ThirdPersonController on.
Essentially this script adds more interactivity between the character and the scene. There's several methods inside this script that automatically move the character when in contact with a moving object (as long as it has a collision mesh) basically by inheriting the object's velocity.
If your gear/cog wheel has a proper collision mesh set up, adding this script to your character should be all that you require.