Collisions and Triggers ("OnTriggerEnter not working!" - Unity Tutorial)

[@olotolow]

After one hour of tears and headsmahes i found this video and the title saved my life... i didnt use 2D... Even tho i used 2D components hundrets of times in the past... Its 4 AM now and i can peacefully go to sleep, tyvm.

[@data_corrupted]

aaand you just saved me

[@foxfirefive]

@@data_corrupted i think you might need to fix your data.

[@friedrichhieronymus8786]

I almost quit my first game after 3 days of tweaking the code, turns out it only needed a rigidbody, damn, I owe you one a big thanks

[@junejuly532]

If you learnt Physics and mathematics well in High school, You will know the engine better.

[@RomainDelmaire]

@@junejuly532 Don't shame someone on what they didn't learn. Encourage them for what they are learning.

[@junejuly532]

@@RomainDelmaire I'm sorry if my comment meant shaming. it was not the intention. I soon realized how important Physics and Maths are to Game development.

[@nathanmcconnell9991]

@@junejuly532 Knowing physics and knowing you needed a RigidBody in Unity are not the same thing.

[@junejuly532]

@@nathanmcconnell9991 In physics, you learn about Rigidbody. Some of the requirements when you go to uni to learn game programing is Physics and maths.

[@Kewie1337]

I needed this so badly for a long time. I am so happy to finally discover your channel as it is truly inspiring work :) Thank you for everything you have contributed to the unity community Code Monkey!

[@CodeMonkeyUnity]

I'm glad the video helped you! Thanks!

[@abdessamadcherrat5275]

Some call him The Next Brackeys Others call him a Legend I call him "The man that the saved me from starting a new project by ACTUALLY making a good Tutorial about Collisions "

[@hardgames4104]

This is a really good tutorial, because it does not only show one way to do something and is over, but it covers several ways how to do and how not to do the topic the video is about. This makes things easier to get put together inside the brain of someone watching. Good work.

[@CodeMonkeyUnity]

Thanks! Glad you liked it!

[@freemoncodes]

My man, I spent like 45 minutes trying to figure this out. Was missing the all important 2D at the end. Thanks much!

[@joaocarvalho7189]

I searched on many videos and websites, and now I finally found how to make the player not pass through the walls ,Thank you!

[@ZeroIdeas9000]

Thank you so much, I have been working on my first game ever. Even though it is a 3d game this finally got a object to detect the thing- THIS SAVED ME SO MANY HOURS.

[@CodeMonkeyUnity]

I'm glad the video helped!

[@wiltongarcia4864]

Your channel is very good, your English is very clear and the speed that you speak is very nice, helpful for those non-natives

[@canerozdemir4195]

I am a simple man, I see Code Monkey and I like it.

[@serialchiller9183]

Aynen :)

[@iDigvijaysinhG]

Man you stole my line, :) But yes we both are simple men for sure

[@canerozdemir4195]

@@iDigvijaysinhG Sharing is caring, right?

[@breadofgodd]

I was going mad trying to get OnTriggerEnter to work, you're awesome!

[@elbreadroh]

I see a fellow Bread, alliance??

[@croeusjawad9744]

I made a project and the walls were not working, then I permanently deleted the project and made a new one and I felt like to quit on this idea, but then you cam and saved me from rewriting 567 lines of code. love u Thanks :D

[@_decoded_]

OH MY GOD 2 HOURS OF PAIN BECAUSE I DIDNT HAVE A RIGID BODY. In all seriousness this tutorial was a life saver, sending love man ❤

[@CodeMonkeyUnity]

heh I'm glad the video helped you! Thanks!

[@AraragiAriel]

I was looking to learn more about collisions, but what ended up really helping me on the video was discovering the Rigidboy2D.MovePosition function, which made me found out the solution to my player movement. I was doing it using the transform before, which wasn't working properly when moving towards terrain

[@loklo]

2 years later and still saving lives, great tutorial saved me a lot of time :)

[@Phalanx3351]

OHH! THANK YOU! my mistake is that I was actually using OnCollisionEnter insted of OnTriggerEnter! never notice this till now =-=

[@iamyourfather6941]

mine is OntriggerEnter instead of OnTriggerEnter... been spending hours for a spelling mistake T _ T

[@Phalanx3351]

@@iamyourfather6941 haha! that's C# for yah

[@noether9447]

Found you through the ads and really liking your videos. Subscribed

[@CodeMonkeyUnity]

Glad you like the videos!

[@swedstonetv322]

Thank you :) After 5 hours of finding the problem I've finally fixed it

[@diegocarrionportilla8718]

I f***ing love you man, you have saved me

[@CodesnippetBiz]

very clear explanation, thank you so much, now I can fully understand differences between these kind of collisions!

[@anirbankarmakar2037]

Awesome video ,I really understand the concepts of collisions better now. Can you also make more on 3d development that would be really helpful Thanks,love your videos

[@illuminith6405]

Thank you for the help. I was struggling a lot to make the collider work but now it works. I am new to unity and C# and you are of great help.

[@Gurseerat_Singh]

Hay code monkey bro i frickin love you omg you saved me actully i needed the function on collision exit and i was not knowing that this finction even exists bro i was almost going to quit my game but you saved it bro i am sooo frickin glad i found your vid

[@DARK_AMBIGUOUS]

Thank you, my game really coming along, I just added split screen multiplayer

[@utilityy]

You are actually so cool. Thank you so much for all of these amazing tutorials you are producing. :)

[@swepo5719]

o m g, i freaking love you, i have been looking for solution for so long and no one says about rigidbody2d XDDD

[@abrahamliz2559]

I was going crazy... could not get a state change inside the trigger. Watching the debugs you used solved my problem lol!! Many thanks!!

[@thefakejonfischer]

Thank you so much! I have been trying to make a title screen, and the trigger wasn't working. I found this video 30 minutes after midnight, and it allowed me to go to bed.

[@DridgeDEU]

Amazing, solved my problem super quickly. Love you!

[@CodeMonkeyUnity]

I'm glad thte video helped you!

[@IsaacJairi]

THANKSSSSSSSSSSSSSS MAN YOU JUST SAVE ME, I WAS 6h ON THIS

[@gameovercom]

Man, I had the same problem, I was trying to play an animation trigger with just the collider, when I tried this, I almost make you a coding religion, haha. Thanks man.

[@namenight7158]

Helped me a lot! Looking forward for your game on steam!

[@subzero4787]

Thanks bro it was helpful... First I thought my script was wrong and deleted it and wrote again and again deleted... But now it's working

[@pholux5647]

Thanks Code Monkey You Really Helped Me A Lot!

[@aminmk697]

bruv I was giving up making a (TOP DOWN DODGER) game because of the rigidbody :) I just subbed to the game dev god

[@Motyy]

THANK GOD IT WORKS YOU ARE A GENIUS

[@CodeMonkeyUnity]

I'm glad the video helped!

[@bbuddyyeapp3557]

Thank you so much!!! I was finding the way that can solve the problem which is first explained in your video! Thank you!!

[@areion819]

Thank you for this video, I was stuck wondering why my collisions wouldn't work.

[@hhhl3555]

Ты легенда. Спасибо за детство

[@Ranoluq]

Bro thank you, i so confused when i making, but you explain this. Thank You

[@TechGuyDane]

This was very helpful. You're the 🐐

[@redfoxlightning]

THANK YOU turns out i just needed 2D at the end. thanks lots

[@samuellucaslimasoares9010]

Thanks very much! This tip saved my work, congratulations!

[@ProfessorNova42]

THANK YOU!! It got stuck at this problem for over an hour.

[@makemoneyonlinewithjannie]

Thanks for this, I needed this tutorial today, I was doing colliders and triggers were set up perfectly, the only difference was my Player never had a rigidbody, so weird that it needs that.

[@alvinmanoj70]

if I had 3 wishes, my first wish will that you will have a million subscribers

[@CodeMonkeyUnity]

Thank you!

[@sasakiluna]

the trigger still doesn't respond in the debug code for me

[@jordanbazin7067]

Me too :/

[@ZodakZach]

Same unity broke ass engine

[@rodrigogriner9904]

Nice! You saved my team

[@CodeMonkeyUnity]

I'm glad the video helped you!

[@nathaliaperes1392]

This was really really helpful, thank you very much!!

[@dwlg]

Code Monkey saves the day again! woop thx man!

[@Fiedroz]

Nice! I was using a 3d collider for 2d game, thanks for helping! :)

[@footballgirl48]

Thank you so much for this video !! Really helpful!!

[@CodeMonkeyUnity]

I'm glad it helped you!

[@crazyone3494]

OnVoidStay2D That line of code saved me! I was trying to make an attack for my character, it is a sword slash, due the circunstances i had to use the Polygon collider as a trigger, then it was simple, i would press the button, if it detected an object with the enemy tag in range it would play the damage animation while removing a life point. The problem was: i didn´t read the whole Unity manual so the only OnTrigger/OnCollider i knew was OnTriggerEnter, from here you can guess the problem. Really stupid of my part....

[@KhaledHakim]

Keep up the great work buddy. I wish you success and more of it.

[@James-zp5ly]

Hello, great video but i didn't manage to solve my problem, was wondering if i could have some of your time. Currently, my player has the following components: transform, renderer, animator (custom script), rigid body 2D, box collider 2D as well as a movement script. The tilemap i want the player to interact with has: tilemap, a renderer, tilemap collider 2D. All these components have their default settings (eg: the player is a dynamic object not kinematic), and my problem is very odd, my player can walk across the floor, will 'hit' the ceiling and not go any higher, but for some reason can pass through the tiles left to right; so my problem is that the x axis collisions are working (as i can walk on them), but my y axis doesn't seem to (as my player can pass through them when walking left to right). Thank you for any help, James

[@harneetsingh9420]

Life saver always, Thanks Hugo :)

[@dhankumari7290]

Your teaching ability is quite exceptional 👌👌👌👌👌👌👌 I really love it💖💖💖💖💖 Thanks as always uploading Such information viedo 🙏🙏🙏🙏🙏🙏

[@serialchiller9183]

Amazing as always.

[@itz_ak4085]

This is very helpful, I Subscribed :)

[@Miki-gd4rq]

Very helpful and great explanation, thanks man

[@neozoid7009]

Love your Tutorials . Awesome and simple explanations

[@Excess-qn7qh]

you make my day ... thank you !!!

[@fallingstar_Yas]

So for some reason, none of the triggers or collision code work. Even when there there a rigidbody. it just doesn't detect that the player and the object is touching. like the player cant go through the item but it not sensing that theyre touching

[@stakes_z]

Love your videos. They help me a lot. I'm having a problem now and I dont know how to find a solution. I need to detect areas in a sphere with mouse click, like a globe. Do you know how I can do that?

[@CodeMonkeyUnity]

You can use Physics.OverlapSphere(); or Physics2D.OverlapCircle(); It will find all objects will colliders within range

[@stakes_z]

@@CodeMonkeyUnity Oh nice! I'll check that. Thank you! So what I need to do is include a collider for each region I want to detect on the sphere and put all as sphere children?

[@CodeMonkeyUnity]

​@@stakes_z Yes, if you have your globe with separate mesh parts that you want to select, just add a Mesh collider to each part. Then when when you click you can just do a raycast if you want to test a single point kzbin.info/www/bejne/Zpu3gX6waMyUatk Or use Physics.OverlapSphere if you want to test with a bit of range

[@stakes_z]

@@CodeMonkeyUnity Awesome! Thank you so much! I'll create my globe with multiple meshes and try it. Thank you

[@stakes_z]

Hi. I would just like to say that it worked. I took meshes for each region of the map, put a mesh collider on each one and used your tutorial on clicking 3d objects as a base. Thank you very much! :D @Code Monkey

[@GustavoPLima]

you save me again! thanks from brazil

[@luke4djojo]

3:08 - legend says this is the moment a young naive man somewhere west in brazil raged with the intensity of a thousand Suns.

[@wizarddude3058]

Are you talking about yourself?

[@xXC0rn3rXx]

Really cool video, but I have a problem. If I want one object to collide with something and also to be trigger to something, how can I achieve this? (for example a projectile that bounces off the walls but effects the player as trigger)

[@DayzeXzxR]

+

[@christo-j5507]

Great work and you're so excellent! Helped me a lot.

[@DataversePH]

Happy for everyone that makes their game works. Unfortunately, mine is now working. I have a rigidbody2d, boxcollider2d for my player, and a gameobject which has a boxcollider for the trigger. And also in my script, I used OnTriggerEnter2d. But it still doesn't work. Send help please.

[@CodeMonkeyUnity]

Your gameobject needs a BoxCollider2D, not BoxCollider

[@dansv9778]

well i have rigidbody and doesn't work. I made lots of functions in the scene with triggerenter and they work...the collision layer are all checked

[@BeardaneLope]

Dan SV I have the same problem

[@stepaburianek8994]

I WAS SEARCHING FOR THIS FOR HOURS YOU SAVED MY COMPUTER FROM ME XDD

[@CodeMonkeyUnity]

I'm glad you found it helpful!

[@mynameisDuck]

Dude I had everything right except I was using OnTriggerEnter instead of OnTriggerEnter2D! Thanks!

[@watcher2747]

For some reason it's still not working for me, any ideas what could be the possible reasons?

[@quentinyahia352]

Hi, i get the same issue and i add a rigidbody to the two object (put on static on the trigger object and dynamic to the player) and it works, hope it was useful

[@TechnoMichaSDL]

i have a 2D Player Object with a Child 2D Object but i want to use the Child Object as Collision detector but how?

[@madbitscience6230]

Great tutorial! Thank you so much!

[@well5832]

increible Thanks CodeMonkey:D

[@bananaramaman9031]

Thank you for this video!

[@jmiller6224]

So helpful, thank you as always!

[@ManWhite11]

In my game when player get into a coin, it can trigger 2 times because I have 2 colliders on my player. How can I fix this?

[@CodeMonkeyUnity]

Are you testing with a script placed on the coin? Maybe add a simple boolean to your collision script and change it on the first collision it detects

[@sabeelm9]

Nice, I found the issue with mine being that I was using the 3d collision and not 2d! Only figured out when I copied your code out by hand lol

[@CodeMonkeyUnity]

Yup I've made that mistake myself several times when I was a beginner

[@jamaass]

Thank you! You saved my life!

[@collosalcake236]

your typing speed is faster than light omg

[@Steve-gi2yj]

ok I answered my question, but the problem still remains, when I put my character from Kinematic to Dynamic on the rigidbody2d, it starts to fall horizontally, and my up button on the joystick doesnt work, like gravity is against it... i set the mass to 1, but still falls, i copied everything i could on your video, but still keeps falling, what else should i check for?

[@brianmo2611]

Any way you could show how to make a block where the player has to "press a key" to activate a pushing mode allowing them to push the block one way or to pull it the other way. and when they press the button again they just walk normally around/next to said block

[@CodeMonkeyUnity]

You could limit the players movement and reduce the objects mass, when he presses the button again set the mass back to a massive number.

[@Semaj0z]

u could add a rigidbody to both payer and block, then add the iskinemtic thing ot the block, they remove it wen u press a button

[@spaceeggmc1938]

code monkey: " as you can see very basic coding very simple movement" me: " yeah maybe for you that coding is far from my brain being able to comprehend that"

[@omidnajmi6019]

thank u man, u solved my problem

[@CodeMonkeyUnity]

I'm glad the video helped! Thanks!

[@KerasinafLega]

Hi! thanks for the vid, its awesome and really helped me on undersatding colissions better! i have a question, if i want a multiple triggers to cause a different events how can i do that?

[@CodeMonkeyUnity]

Make multiple separate game objects each with its own trigger and script

[@Steve-gi2yj]

thank you for the tutorial, do I need to use RigidBody2d to make it stop against walls? right now i am using a joystick prefab, and in the code using: player.transform.position, and I set an object, just a black cube, with only box collider 2d, and the player still goes through it... so again, is it because I am using transform.position instead of Rigidbody2d? I set everything you did at the 5:51 video mark.... but not working.

[@CodeMonkeyUnity]

The rigidbody by itself has no shape, the shape is on the collider. So just a rigidbody will move through walls If you manually set the transform.posiiton then you're overriding the rigidbody logic (unless you make it kinematic but then you have to handle collisions yourself)

[@pradhyumansolanki6509]

broooooooooooooooooooo,thank my gooooooooooooooooood,really i mean it you are an absoulte lifesaver

[@CodeMonkeyUnity]

I'm glad the video helped you!

[@definitelynotjames1970]

I just got your own advertisement from this video

[@upsidegaming7134]

Sorry if this is a silly question, I’m new to Unity and don't quite understand how to detect when two specific objects collide instead of any collisions detected.

[@CodeMonkeyUnity]

The script that has the physics function will run when that object is involved in a collision. So you know that object is one of the two objects involved in the collision, for the other one, perhaps you identify it by a direct reference (collider.transform == testTransform), perhaps the other object has some identifying component collider.GetComponent() != null; etc

[@baisk7105]

you literlly safed my life

[@phin-7261]

very helpful. just one problem that light bright coding screen is killing my eyes.

[@CodeMonkeyUnity]

Sorry but dark mode burns my eyes

[@rollingstonesonroad]

Hello. I am trying to detect on trigger condition with prefabs. But the problem is it is detecting the collision with only the first prefab out of the spawning prefabs. How to rectify this?

[@cate01a]

cheers! my issue was using OnTriggerEnter instead of OnTriggerEnter2D :)

[@d3zar]

uhmm, i have a polygon collider. I'm trying on triggerstay2D event for this. But uh If i wait with dummy mode ( so doing nothing ) in my polygon collider it's working for 2 seconds. But after debug.log is not logging while when i out from dummy mode. Why it's stopping working .? And how can i do like your heal circle in this video.

[@DWIWindsands]

Nice I can use that on my bullet & it won't stick to the wall or I can not & make it stick to the wall TY.

[@loya5377]

Hi! Please help me! How can I determine the coordinates of the vertices of the Box Collider? If the object's rotation is not (0, 0, 0), then collider.bounds doesn't help.

[@peachytunes4193]

I spent two hours trying to figure why my trigger wasn’t working just to realize that the problem was I typed collider instead of 2D collider

[@pmoneyish6869]

And here is the comment that just saved me :). Thanks!

[@chilyphilly]

OMG i love you! I had that same issue until i tried this.

[@burakyigitgulsun3833]

I'm using ontriggerenter 2 and ontriggerexit2d to check if my character is inside a cave. but since my character's collider is smaller than the collider of the cave, the oncolliderexit2d command works as soon as I enter the door as if I went out of the cave, how can I fix this?