I am working on Unity for a month. I am new on Unity and C#, before Unity I worked other game engines. Whatever I am working on infinite run game, I wrote random road generator. Road generator is working well but I have problem about updating road. I can update road manualy like this. How can I update it automaticly?
void Update()
{
if(Input.GetKeyDown(KeyCode.A)) UpdateRoad();
}
My UpdateRoad method adding road like this(I am using object pooling).
I want to update after Link Road, OnExitTrigger or something I dont know. How can I do it?
You would need to implement Object Pooling.
I would suggest making your Design of Objects first so you can test. Or if not use, the stock Blocks Primitive of Unity3D as your Prefabs. I hope you already know prefabs. It is a major key for making infinite runner. Actually a main core for making any kinds of game.
Prefabs is an Object File where you can Instantiate it in a location. So lets say you will generate a Flat walkable, then Generate a Pit. You would probably want to stack them together.
Now Generating them is easy. You would not like to go in an Update? Approach because most likely you're not going to update, but you're going to further stack what is going on ahead, based on your game logic.
To further Understand this, Unity3D already made a project or Fully Detailed tutorial. It maybe made in 2D but it is going to be the same, if you're going to change the Collider2D to Collider <- this is important in your case.
https://unity3d.com/learn/tutorials/modules/beginner/live-training-archive/infinite-runner
Update
You would need to create an Object, that is invisible. Meaning a Trigger.
Then on Trigger call your method UpdateRoad();
https://unity3d.com/learn/tutorials/modules/beginner/physics/colliders-as-triggers
Detailed Videos about Trigger.
If I understood your needs correctly, you could create Empty Object name it SpawnPoint, set position for Spawn Point as you need (out of the camera view) and then Instanciate random prefabs of road. Concerning On TriggerExit - it could be used to destroy "old piece of road". But to have it working properly, dont forget to set collider and rigitbody to your objects. Dont add collider2D or Rigitbody2d, add and use Box Collider and Rigitbody components
Related
I am using the (new) input system of Unity and have the problem to realise an interaction with different objects. I am still quite new to Unity and hope to find some help.
I have created an event (OnInteract) that listens to whether e has been pressed.
Next I created an object with a collider into which my player can run. Whenever the player meets a certain collider, something should happen. In my case I want to change the scene. However, on my initial scene there are two doors that the player can open by pressing e. I have given both doors the same layer name because they are both exits.
Basically, it works that I can only press e when I hit this particular collider. However, I don't know how to do it instead of performing two different actions. Maybe there is a way to give the objects a script that I can trigger via the PlayerMovement script. Without taking it into the player.
this is my script that works so far:
void OnInteract(InputValue value)
{
if (myBoxCollider.IsTouchingLayers(LayerMask.GetMask("Entrance")))
{
Debug.Log("interact with the door");
}
}
or is there perhaps a way to listen to the "tag" instead of the layer?
I have also come across interfaces, but have not really understood how these help me. Or how I have to use them here to make them work.
In the end you're going to have to check some kind of tag, layer, or reference a component. it's just your preference. To make it a little simpler you can shoot a raycast in the direction you are looking to check for objects instead of having colliders. But in the end it's doing the same thing.
I don't really use interfaces as I'm pretty new myself but from what I can tell they are generally used for organization and global accessibility in similar objects, like doors lol.
Maybe im missing something obvious but to keep it short. I have working code for a character. When you "dash" I want to leave behind an after-image type effect, by cloning the player, removing its unneeded components and then applying a shader. Issue is as soon as I instantiate the clone the original player stops functioning (cant move etc). It still has all its components and everything as normal, and the clone does get the correct components removed. But it still breaks. As soon as I remove that line, its back to normal. Any ideas?
This is the only relevant code in the script that instantiates the clone.
private void DodgeEffect()
{
GameObject _DodgeSFX = Instantiate(gameObject, transform.position, transform.rotation );
Destroy(_DodgeSFX.GetComponent<PlayerController>());
Destroy(_DodgeSFX.GetComponent<PlayerCombat>());
Destroy(_DodgeSFX.GetComponent<WarpController>());
Destroy(_DodgeSFX.GetComponent<Animator>());
}
its because you are making a copy of gameObject. while Instantiate() returns a GameObject, it also returns whatever you put into the first section of the method. instead, make a seperate gameObject than the player in the editor, and make _DodgeSFX public so you can put the copy into the slot. Then, just instantiate that seperate GameObject and you wont have to destroy the components through script(because you remove the components in the editor), saving time
Ok so from some testing I think its down to the Unity.InputSystem only allowing 1 instance of each Input to be enabled at once. When I instantiated a clone of the player, it still goes through the Enable/Awake functions before those components are destroyed, and since the Inputs on that clone were never disabled, that becomes the "main" one. If I set the main player's scripts with Inputs deactive and then active again, it all works as normal. Note that the script was still working on the main character just fine, it was only the inputs that was broken. Im still not sure why this is the case, if its a limitation of the input system, or intentional, cant seem to find documentation of this experience anywhere.
I'm currently developing a game in Unity using C# and I've run into a small problem.
I need to spawn a certain gameobjects relative to the Spawnposition and length of another game object. Now I figured that bounds.size would be the best function to use in this instance. As shown bellow I declare first the variable that uses this in my start method:
public void Start()
{
GameObject PointBar = (GameObject) Resources.Load("PointBar Horizontal");
PointBarVectorLength = PointBar.GetComponent<BoxCollider2D>().bounds.size.x;
PointBarVectorConv = Camera.main.WorldToViewportPoint(new Vector2(PointBarVectorLength, 0f));
}
However, the gameobjects in question are inactive at start's call and thus I presume don't return any value for bounds.size when called.
Does anyone know how I can access the bounds.size or equivalent of an inactive gameobject or is there something else I'm missing here?
As noted in the documentation for the Collider.bounds property, bounds "will be an empty bounding box if the collider is disabled or the game object is inactive". So your assumption was pretty much right. Since the object doesn't exist in worldspace that makes sense.
I'm not sure about the most elegant solution for your use case but two options spring to mind.
Calculate the object's spawn dimensions by accessing its transform.localScale and factoring in the scale of prospective parent objects. That could get messy but you could probably also write a helper method to make it more manageable.
Instantiate the object somewhere off screen after you load it, access its Collider.bounds property to get the information you need then move it where ever you want it or store the information for later.
There may be better solutions but that's what leaps to mind for me.
I solved the issue by using GetComponent().bounds.size.x;
instead of BoxCollider. This component can get accessed when the game object is not active.
Hey I'm new to Unity and I started creating a Tower defense game. Currently I can create one level and have monsters spawn and walk along a path I made with empty GameObjects ( Waypoints ). I can also drag and drop Heroes onto certain places called ( PlacePoints ); these are empty GameObjects, too. Here is a picture of my Level_1 prefab:
Level_1
This all works well so far but I read about GameObject.Find and Transform.Find being slow. And since I want to write fast and clean code right from the start, how would I make this faster and more efficient? Here is an example from my LevelManager script:
public Transform findPlacePoints()
{
return GameObject.Find("Level_1(Clone)").transform.Find("PlacePoints");
}
The question is, would it be faster to store all the information in a .txt file and load it in my LevelManager and then have each Script find the LevelManager which is a Singleton and ask for specific information? Basicly have the LevelManager act as a distributer? Informtion would be:
Spawn Times
Positions of ( SpawnPoints, Waypoints, PlacePoints, etc.)
Enemy Types
Don't fall into the trap of Premature Optimization. GameObject.Find is only slow if you make it slow (searching lots of objects in your scene). Check out the Improving Performance of Our Code section of Unity's Optimizing Scripts in Unity Games if you want to learn what writing good patterns looks like in Unity. It should provide you with some tips and not have to worry about deep-diving into GameObject.Find and disk operation optimizations.
As stated, It really depends on how many items you are searching and how you write the code. From my understanding direct references, such as setting a variable in the inspector, is the most efficient way to "find" something in scene.
Unless you are doing it a lot and in updates, it really shouldn't hurt performance that much. I would focus my optimization time on not destroying/instantiating, keeping UI updates out of the game loop, and keeping light scripts on frequently used objects.
Hope this helps!
What I would do (not saying it is the best) is have a static class just to store some informations (not a monobehaviour) let say Utilities. Have a public GameObject[] waypoints in it. On each of your level, add a script that will overwrite Utilities.waypoints with it's own GameObject[] variable. In the inspector, just drag/drop your waypoints on this script. You can then call Destroy(this) which will delete only the script after completion.
So I'm working on a space game called Star Commander.
The progress was going beautifully until I decided I needed to implement some sort of physics. I'm mainly going to be needing Farseer Physics for collision detection.
Anyway, since it's a space game, when I am declaring my 'World' object:
private World world;
this.world = new World(Vector2.Zero);
I have no gravity. This causes a weird result. I can collide with objects, but once I stop colliding with them, that's it. I can no longer collide with them and will just go straight through them. However, with gravity:
private World world;
this.world = new World(new Vector2(0F, 1F));
Collision works beautifully.
I've tried looking around for help with Farseer, but a lot of the posts are dated and there are no real good sources for information and sadly, I'm pretty sure I'm not going to get the help I need here either.
The only thing I found whilst looking around was that with objects called "Geoms" I need to disable a property called "CollisionResponeEnabled" or something similar.
However the Geom object is no longer present in Farseer Physics 3 and has been totally replaced by Fixtures. Fixtures do not seem to have this property, however.
I can provide any source code that may help, but keep in mind I am still implementing the physics engine into my project and a lot of the code isn't final and kind of messy.
IMPORTANT EDIT:
After recording a short gif to demonstrate my issue, I found out that I can only collide with an object once, to collide with it again, I have to collide with a different object, but then cannot collide with that object until I collide with a different object.
Example:
It seems to me that your bodies might be "sleeping" after the collision. Have you tried setting SleepingAllowed = false on the bodies to see if this is the problem?