Develop Reference

Unity3D : Raycast Issues on Android Build

I'm using Unity 3D for developing 3D desfense game.
I made a monster that can take agro from intruders of map, making them occupied while being vulnerable to other attacks. I wanted to make monster can be moved when it's touched once.
Process: touch the monster → touch the destination → monster moves to the destination
I wanted my monster to move through the entire map, but can take intruder's agro
only when they're on the road. I'm currently using Raycast to make this happen, and I'm stuck.
It works just fine on Unity, but when it's on a build and played on the phone, monster can't recognizes the touch or can't recognizes the point where I touched.
if (IsClickMonster)
{
if (Input.GetMouseButtonDown(0))
{
Ray MoveClick = cam.ScreenPointToRay(Input.mousePosition);
if (Physics.Raycast(MoveClick, out ClickedPosition, float.MaxValue, whatCanbeClickedOn) && ClickedPosition.collider.gameObject.CompareTag("monster") == false)
{
Debug.Log("Monster is Moving!");
clickEffect.transform.position = new Vector3(ClickedPosition.point.x, ClickedPosition.point.y + 1.0f, ClickedPosition.point.z);
StopCoroutine("MonsterMove");
IsMoving = true;
StartCoroutine("MonsterMove");
}
else
{
clickEffect.SetActive(false);
StopCoroutine("MonsterMove");
IsClickMonster = false;
return;
}
}
}
else
{
return;
}
↑ Picture of Moving the Skull Soldier. White dot(clickEffect) is where Player touched(ClickedPosition).
Physics.Raycast(MoveClick, out ClickedPosition, float.MaxValue, whatCanbeClickedOn)
Even though I'm using the "whatCanbeClickedOn" layermask, I wonder what can I do to avoid this from happening on mobile build.

In my experience with android, when something doesnt work well in android could be either you have some error or warning on execution that did not trigger on unity just by chance or maybe the phone is not capable of handling the game like it moves too many polygons or lights and it cant handle it well then starts making odd things, try checking the warnings in unity and see if any error appears too of course, thats my best bet

Unity3D VideoPlayer Clip Crashes on Android but Not W10 Desktop

When launching the game, after the unity splash screen, my first scene is a small 15-seconds .mp4 cinematic.
I have scripted said cinematic to load the next scene (Main Menu UI) after it has ended and it works flawlessly on desktop. When I build&run to test it on my Android device (Huawei P20), it crashes after the Unity splash screen.
I've tried using multiple .mp4 as well as using converters to change their codec to no avail. I've also tried resizing and/or changing the resolution, but that wouldn't fix it either.
My only limited solution is using Handheld.PlayFullScreenMovie, but this is not something I want since I don't want players to be able to pause/skip the cinematic.
using UnityEngine;
using UnityEngine.Video;
using UnityEngine.SceneManagement;
public class IntroToMainMenuUI : MonoBehaviour
{
public VideoPlayer VideoPlayer;
void Start()
{
VideoPlayer.loopPointReached += LoadScene;
}
voice LoadScene(VideoPlayer vp)
{
SceneManager.LoadScene("Main Menu UI");
}
}
Needless to say, the Android device always crashes, while the W10 desktop runs it perfectly.

For anyone in the future in a similar predicament, I resolved it. The fault was that I had the video clip attached to the main camera directly. Apparently desktop will play it fine as is, but on Android it will always crash. I, instead, went to the Video Player component and in "Render Mode" I chose "Render Texture". I then created a raw image and attached the Video Clip in the "Texture" section. Like-wise, I then attached the raw image into the Video Player's "Target Image" section. It played fine afterwards.

Unity App freezes when loading Multiple Videos on same Scene

When navigating from menu to a Scene that contains 8, 1-minutes MP4 videos, that are played using new VideoPlayer script on RawImage component. I am using Unity 5.6.0b11 beta version.
In the scene that I am trying to navigate has prefabs that loads videos in list thumbnails, previously I was loading Images instead of Videos and it was working fine, now when trying to load video it freezes for than 38 seconds on Axon 7 (4GB RAM) and 32 seconds on One Plus 3 (6 GB RAM) but does not lags at all when playing on Unity Player itself.
Script I used for VideoPlayer is from this StackOverflow Question.
button.onClick.AddListener(new UnityEngine.Events.UnityAction(() =>
{
SceneManager.LoadSceneAsync("SceneSponsors");
StartCoroutine(CloseMenu());
}));
Is there a way, I can work around with the Slow Loading Scenes or pre-load them in Background when mainScene is loaded on the App start and navigate in need.
I saw somewhere Resources.Load() also makes it slow on Android Devices, but I've tested by removing all Resources.Load() which I was using to load image sprites but the problem was still there.
Edit:
Here's my CloseMenu() functions it is only used to swipe and move the menu panel. P.S the App freezes only on loading that particular Scene, and works smoothly for other.
IEnumerator CloseMenu()
{
if (IsOpen)
{
Vector3 pos = MainMenuWindow.transform.position;
iTween.ColorUpdate(CloseArea, new Color(0, 0, 0, 0f), .6f);
iTween.MoveTo(MainMenuWindow.gameObject, new Vector3(Screen.width, pos.y, pos.z), .6f);
IsOpen = false;
yield return new WaitForSeconds(.3f);
CloseArea.transform.position = new Vector3(-240 * ScaleFact, CloseArea.transform.position.y, CloseArea.transform.position.z);
}
}
Edit 2
I am loading VideoPlayer on RawImage using Script. Here's what RawImage looks like in Play mode along with VideoPlayer, and in inactive mode.

For my case of problem. I had to make some changes on the VideoPlayer API Script I was using from this StackOverflow Question
In the script I was using from that link. The Co-routine was started inside the Start() function, that made the videos in 8 different prefab, to load at once even they were in pause mode.
So I added a new function PlayVideoOnClick() and attached it to the Click Event of the RawImage, so now the video will be loaded only if the RawImage is clicked.
Changed from
public void Start()
{
Application.runInBackground = true;
StartCoroutine(playVideo());
}
To
public void PlayVideoOnclick()
{
Application.runInBackground = true;
StartCoroutine(playVideo());
}
P.S: You can also see my YouTube Video Tutorial and Blog on Playing Videos smoothly in Unity.

It is a well known bug that loading big scenes using LoadSceneAsync may block the gpu completely several seconds (completely unnoticeable in the editor), i´ve also been following this for quite some time now,
From the forums:
https://forum.unity3d.com/threads/starting-async-load-causes-massive-lag-spike.288755/
Official unity Issue tracker:
https://issuetracker.unity3d.com/issues/loading-a-scene-async-creates-huge-performance-spikes-for-the-gpu

Libdx | Input Processor touchDown() not firing every click

I am using an input processor for touchinput on a flappy bird like game. This works fine on my droid turbo, and a couple other newer phones. But with my two older tables, a xoom, and verizon tablet, touchDown occasionally doesn't fire. I should mention that the FPS is 60 throughout gameplay. Also, I use an inputMultiplexer which adds both the playerInput and hud/play stages. Could this just be a problem with older android? Any fix? I am sure it's not my code for the fact that it works on newer phones.
EDIT
I tried using Gdx.input.isTouched like so :
if(Gdx.input.isTouched()){
if(!touched){
jump();
}
touched = true;
} else{
touched = false;
}
But it gives me the same results as input processor :\
This is not a problem with the jump method, as of right now it just prints "touched" to the console.

it is the issue with the viewPort. that is the different phone has different screen size. please check the below link which will help you
http://stackoverflow.com/questions/39810169/libgdx-text-not-rendering-properly-on-larger-screens/39946652#39946652

Unity canvas scaler hiding animations in high resolution display

I instantiate the following gameObject, which contains an Animator with the mode "always animate" on, the animation goes for 340ms, after that time I destroy the gameObject.
The gameObject Inspector properties:
I instantiate it using the following code:
instancia = (Instantiate(cardAnimation, new Vector3(0, 0, 0), Quaternion.identity) as GameObject).GetComponent<Image>();
instancia.rectTransform.SetParent(transform);
StartCoroutine(KillOnAnimationEnd());
Here is the Coroutine:
private IEnumerator KillOnAnimationEnd()
{
yield return new WaitForSeconds(0.34f);
DestroyImmediate(instancia);
}
Here is how the animation looks like when simulating in Unity (PC-Windows):
But on android after I open the chest it waits 340ms with nothing happening and then show the information above, does this have something to do with the plataform or is some unity or perhaps code related issue?
NOTE: I also have another animation in another scene that is just a already instantiated gameObject in the Hierarchy with always animated on and it works on Android.
--EDIT--
So I have ran the newest version of the app in a emulator which is almost about 1080x480 and the animation showed just as the PC, also running on a 720p smartphone did the job, the only problem I'm still having is with my QuadHD resolution from Galaxy S6, everything else shows but the animation, I have even tried making the animation run without any script so it runs in a loop, but it doesn't show up in galaxy screen.
Given the news about the issue I think this might change a little bit the perspective of answers and perhaps help someone else solve the same problem in the future.

Okay, figured out the problem, its something to do with "rotation" in animations using Unity3D in 2D mode, gonna be reporting it form Unity so it is fixed.
The solution: Animate your UI only using scale/position, if used rotation it will not show on high resolution display.

I am pretty sure your WaitForSeconds(0.34f) is not working properly because there is no thing such as yield keyword in Java. I recommend you to use a invoke method instead to call your method that destroys your GameObject.