I spawn the prefab in a gameobject and that gameobject is a child of UI Image what I'm trying to accomplish is display the prefab infront of a UI Image. I've tried making z position of gameobject to negative but nothing happens. I can't place the sorting layer of UI Image cause it doesn't exist. What should I do? Is this even possible?
Update
Tried adding second camera. I made gameobject layer to SecondCam. Change settings of second camera to depth only and it's culling mask to SecondCam only then it's layer to SecondCam also. Change settings of main camera culling mask to everything except SecondCam. But this doesn't work, Have I done something wrong?
Second Camera settings
Main Camera settings
If your Gameobject is not one of the UI components you may need to give it another layer and render it with another camera with depth property higher than the UI camera.
You can change the sorting layer on prefabs or any object created on runtime.
If your UI canvas is set to screen overlay, then it with ALWAYS render on top. You have to use a screen space or world space UI, along with Dave's answer.
Related
I'm trying to display some Particles and Slider (like a health bar) over a GameObject in Unity 2020.3.26, but even if in the Scene it's showing like I want, when playing, the canvas seems to orient itself "too much" and I don't know how to make it so both the Particles and Slider stays in place.
As shown in the images, I've put a canvas in a GameObject "Aimable Target Body", and when I look at the center of the object it works as I want.
But if I start looking away, instead of staying centered, the UI goes a little away (don't mind the big blue magic circle in the middle, it's supposed to be there).
I don't think I have a problem with my Canvas settings (I make it so it's always facing the camera) but I don't see where else it could go wrong...
Thanks in advance for your answers !
Game Objects
Scene View
Correct UI
Wrong UI
Canvas Settings
The main reason for this is that the target exists in the world, while the slider exists on the canvas. Those two elements have different coordinate systems, and if you want the center of the Circle+Slider to be at the center of the Sphere, you have to project one set of coordinates to another one (World to Screen).
This can be done using the WorldToScreenPoint method on Camera.
Basically, the UI elements (existing on Canvas) will have to check the transform.position of the sphere in the world in Update function, and set their position using _mainCamera.WorldToScreenPoint(sphereTransform.position)
In my 2d Unity project, I have a Canvas with an Image that I want for a Background.
I have 2 gameObjects in front of this background. But no matter how much fiddling I do with Pos Z, Sorting Layers, or hierarchy sorting, the image is always in front of the objects.
Gif above shows in 3d mode that even though the image is clearly behind these objects, it will always appear over them if they overlap.
Hierarchy:
Main
Camera (Inspector: https://i.imgur.com/Q5a52cf.png)
BackgroundCanvas (Inspector: https://i.imgur.com/m9Pxr6B.png)
BackgroundImage (Inspector: https://i.imgur.com/jTx7pEW.png)
Object1 (Inspector: https://i.imgur.com/YcClEhk.png)
Object2
Any advice to rescue me from this madness is much appreciated.
Set the sprite renderer's transform z value to 0 instead of 100
If that does not solve, please specify camera properties also, so I can try to recreate the exact setup.
Try clicking on Layers -> edit layers, inside sorting layers you can change the order grabbing layer, everything upper appears behind in the camera.
You could create a layer called Object
Assign it to the game objects.
Create an object camera
culling mask -> object layer
depth bigger than you current main camera.
Set it to Projection -> Orthographic
Clear flags -> solid colors.
canvas Render Mode -> Screen Space - Camera and assign the Render Camera to be the Object Camera
Inspector tab of the object or background.
Sprite Renderer.
Additional Settings.
Sorting Layer.
change it to a different layer.
Had this same issue and was able to fix it with these steps:
In canvas settings change Screen Space Overlay to Screen Space Camera
Set the camera variable to the one you are using for your scene.
I figured out a workaround. I basically created a VisualElement inside the UI Builder and set a render texture to the background. Then I added an extra camera to my project to view all the sprites that needed to be on top. That camera feeds the render texture, so now everything that camera sees is forced to be on top of the UI Document as the background of that VisualElement. If you want control over the whole screen, just set the VisualElement position to absolute and max out its dimensions. If your game doesn't have a fixed aspect ratio it might cause some stretching, but other than that I cant really tell the difference. Sorting layers for the UI Documents are broken and unity needs to work on that. This is the best option I've found. Hope this helps.
I had the same problem and I fixed it by attaching the camera to the canvas which is screen space and finally changing the sorting layer of my object to -1.
I'm using a modern (Event System) UI approach in Unity. I have a screen space Canvas, some interactable world space elements, and my camera is properly set up with a Physics Raycaster. I want some of my screen space Canvas elements to let rays through and hit the world space elements.
I set the Event Mask on the Physics Raycaster to just the UI layer, and the elements I want to ignore are on another layer, but that doesn't seem to do anything.
Here's a picture:
The panel itself and the labels on top and bottom are set to the Ignore Raycast layer.
I'm using Unity 2017.4 LTS.
Set off the raycast target on the UI elements you want to only be visible but no interaction.
https://docs.unity3d.com/ScriptReference/UI.Graphic-raycastTarget.html
I have two cameras,
why I have two cameras?
because I want some game object in front of the Canvas so that it could move around, maybe could have some particles if it feels happy etc.. So:
I set up the main Camera with mask option UI and make it in charge of all the UI stuff, and to make sure it does not overlap everything I set the canvas mode "Screen-Space Camera"
I set up another camera and make it capture everything else except the UI stuff.
set their depth so that the main Camera with UI will behind the other Camera.
things go well now, I could see the game object before the UI stuff. Cheers!
But in some case I what to convert the UI element to the point in the world space, So that I could generate some gameObject near the UI element and maybe Tween it to move to another UI Element, let's take collecting Gems as an example.
Usually, I could just do that with following code:
GameObject go = Instantiate(eff_gem);
go.transform.position = Camera.main.ScreenToWorldPoint(p1.GetComponent<RectTransform>().position);
go.transform.DoMove(p2.GetComponent<RectTransform>().position, 1f).OnComplete(()=>{
Destory(go, 1f);
});
The main idea is to instantiate a gem near a button and make it fly to the count panel.
But since I make the canvas "Screen Space Camera" instead of "Screen Space Overlay", all the above code will be a mess. furthermore, I think I have to convert the screen point of the canvas element to the world space by the other camera, But I can't even get the actual pixel position of the canvas element by
p1.GetComponent<RectTransform>().position now.
So How Can I do that?
I have made a demo project to demonstrate the issue.
var p1R = p1.GetComponent<RectTransform>();
Vector3 p1WorldPos = p1R.TransformPoint(p1R.rect.center);
//use p1WorldPos in your other camera
I am having a problem with my unity canvas as my background is on top and covering my gameobjects. I have tried putting the canvas sorting order to -10000 and changing the canvas rendering mode to overlay/camera/worldspace, but none of them works..
This is how my game looks like right now:
as you can see the white image which is my background is covering my gameobjects..
Attached are my component values for my canvas:
my canvas
Attached are the values for my camera:
my camera
Attached are the component values for my gameobjects:
my hero gameobject
Have you tried setting your game objects z position to a negative value?
For 2D games in Unity, the more negative your Z value is, the "closer" it is to the camera. If you try setting your knight to something like -1, it should no longer be obscured by your background.
Also, make sure to set the camera for your canvas' render camera and you can set the sorting order back to whatever it was before. Just check the individual pieces attached to your canvas to make sure their Z positions aren't "in front" of the game objects.
The background for your game shouldn't be on the canvas, it should be a gameobject with a sprite renderer and need to be attached with a sprite(background image) with a resolution that will fit most mobile screens (assuming you build it for mobile phone, i personally prefer making it 1028X720)
if you still insist on putting it on the canvas then you could set the canvas render mode to world space and set the sorting layer to something less than default or sort order -1
I know it is old post but #user8502296's answer saved me so I wanted to contribute. I changed the Canvas->RenderMode->Screen Space-Camera then I added Render Canvas->Camera->Main Camera.
Canvas