UE4 With Casey - Mastering Blueprints - Part 2 - Actor References
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- เผยแพร่เมื่อ 28 ก.ย. 2024
- In part 2 of the series I explain how we can use actor references to communicate between actors and open up a whole new world of interaction inside of blueprints.
Part 1 - Events: • UE4 With Casey - Maste...
Part 3 - Vector Math: • UE4 With Casey - Maste...
Man, what a truly excellent tutorial. Thank you. This is the stuff that actually empowers people. Kudos.
I wish I had seen these years ago. Really good tutorials with clear and concise info.
"you should never use get all actors of class" that was literally my Mvp function in coding new things (pretty new to UE4) because it was so easy. Thanks a lot for this efficient way good tutorial!
You definitely can use it, just make sure you use it appropriately
Your Mastering Blueprints Series is amazing!!! Helps out a lot. Most BP tutorials online are rushed, unexplained garbage
Great Tutorial :) But for me a non english speaking person a bid to fast... The part at 21:10 i liked the most :D
I know why
Man seriously thank you so much. Your videos made me enjoy learning this. I right away started by creating a door that would open using line traces and it went well.
Finally starting to understand this, you have to drill down to the component you want, like a folder tree after you reference the top level.
wow you are the best ue4 teacher yet
Bro-ski! Great information, Very Clear and Informative!
Casey, you have phenomenal pacing. You have clear explanations and you give proper examples in all the tutorials I've seen. Have you thought about selling courses on sites like Udemy? Got any plans with the channel to add more tutorials? Any books/sources you recommend? Would just love to see more from you. Thanks for everything!
struggled with this concept so many times. Thanks for breaking it down
Thank you so much for making this set of videos. It really helped me understand blue prints and fundamentals.
open a patron page i really wanna support you
Really cool tutorial, so many references haha
wow you born to explane good so others can understand complexe things easly :)
Can you do a video on using blueprint interfaces? I’ve heard that they’re better than doing specific casting
Thank you so much for these tutorials. They are immensely helpful.
It is very good to get to know why some things are done a certain way instead of just copying from a tutorial.
Do you happen to have any explanations on how to deal with the delta time and its pitfalls on performance in any of your videos, I did not find any yet.
I am surprised your channel does not have hundreds of thousands of subscribers ^^
Keep up the good work.
Thanks! I'm not sure what you mean by delta time lowering performance. We can use delta time to help make our game behave independent of tick rate and performance.
Great Series , nice job .
Shoutouts to your friend at ~21:00
Wasn't able to get the text to change.
I have a question about your example where you said that you might create an invisible actor in the world that spawns zombies. Why did you need to place it in the world if it's invisible? If you simply wrote the blueprint but did not place it in the world would the game not load and execute that blueprint without being spawned? Is that why I often see people spawning character controllers?
This could be different for other engines, but generally to run code at runtime you do it through an actor. Actors must be placed in the level to exist.
@@ue4withcasey391 Ok, I think I understand. I have always been a little confused about what the differences were between running code inside the level blueprint, an actor, a character, etc, but I think i'm starting to get the hang of it.
@@JLocke573 The difference comes in how you structure your code. In theory, i could write every piece of code for a game inside one actor and use references to other actors to manipulate them. However, this would be really really sloppy and not ideal. Where we put our code influences things like how can the code be reused, scaled, etc.
I want to reference a triggerbox component from another triggerbox.
is there a particular reason we shouldn't worry about the math? Apart from referencing I struggle a lot with making sense of the adding of vector components with object type values. All that really confuses me
nvm saw the end of the vid its in the next vid
At the start I was pretty bad with vector math. The nice thing about it is that it isn't hard to google solutions. While I'm not a fan of copy pasting stuff, I will admit early on vector math was something I had to copy others work early for. If it doesn't click immediately it isn't that big of a deal. When you look up solutions for finding distance, direction, etc. just try to think through what the person did and with some persistence it will eventually click. I'd argue the thought process is more important early on than the actual math itself.
This is a great series. I'm wondering if the Actor References can pass down to child actors or inherited actors? Like if I have a master "Monster" actor with a Health value, and I have multiple monsters inherit from Monster, would it reference the right actor?
Yes I believe you are saying it correct.
If you had the parent class Monster and then made a child of monster named Goblin. Goblin would inherit all the properties of Monster like any normal child. In addition, a Goblin actor can be cast to "Monster" and it will succeed and the actor reference will then be held as a Monster. This is very common when you have a bunch of different child Monsters running around. If you need to keep track of them all in an array, you wouldn't really want to have a different array for every child class. You would just hold them all in an array of Monster.
@@ue4withcasey391 Ok, yeah you're describing exactly what I was going for. Thank you, I think you've been one of the clearest tutorial guys I've seen for UE4.
shoutout to Jdog
No dislikes like you should have
11:58 what is happening here?
Hes just getting the location of the where the player is and the direction hes looking and then tracing a line five hundred units in that direction and then checking if it hit anything
penisLoL
Sheesh, next time you make a video make sure to NOT drink any caffeinated drinks before you start. You talk and click way to fast for any beginner to follow what you've done or what you've clicked on. That's not true throughout the video, just in certain segments. Please slow down.
Click on the gear icon, change the playback speed to .75 to slow him down.
Good luck finding anyone on youtube that teaches in a clearer more repetitive and positive way!
@@RealCoachMustafa I found 0.25 to be just right
This guy's 3 part tutorials on mastering blueprints are some of the best I've come across for explaining these concepts.
21:10 ah yes. a man of culture
These are the best UE blueprints tutorials. You should come up with a full blown course plan make a proposal for it and apply for a epic grant, cus the way your teaching anyone can understand. I would love to get a A to Z training in unreal blueprints and coding from you. thank you.
Basically you can take litterally nothing for granted when writing code. You need to literally make the tools appear that you will be using and continually build upon. You can't just say form something to go somewhere. You need to tell how it gets there as well.
You are outstanding at explaining things, thank you.
Thank you, thank you....
After a month with unreal... This is exactly what need. Someone explaning everything like you. Thanks a lot.
Subscrived right now and looking forward to see your whole channel.
Bro u r the best u save me to spent ton of money at udemy. U deserve more subscribe for ur good knowledge that u share us. U r awesome man bro... Plz upload more course on blue print. Thankyou brother.... God bless u for ur kind work.
When changing my health value, it prints over my old value. How do I prevent this?
Why is my Linetrace going straight upwards 12:49 it aint going in the same position as i shoot, why?
a line trace has a start point and end point. The start point you want to be your actor location (if you dont mind it being from the center of the body), or you can get the world location of your gun. The end point is going to extend out in a straight line from the start point. We achieve that by taking the forward vector to see where we are aiming. This vector is a unit vector (length of 1) and we multiply that by a distance (float) and then add that back into the starting point. This math is explained a bit more in the next video
@@ue4withcasey391 OOoooooOOOh i see! tnx
Why is it that when I drag out the hit result of my trace it doesnt allow me to break
Thank you Casey, i've learned some from your video. You are really good as teacher, i hope you will make more video/tutorial like this!!
Really cool !!! Thank you so much.
14:00
9:35 man.... you don't even know. You just spoke to my soul. Seriously, this minute - minute and a half section just cut my brain open, took my misunderstanding of object references, fixed it, and stitched me back together. Thank you
anyone else find themselves screwing around with the pretty effects in ue4 rather than just learning the software
Your teaching skills are incredible. Thank you for sharing your knowledge, one of the best tutorials on youtube.
Thanks again!
The most useful tutorials to date!
god why are your views so less you are an awesome teacher brother
Great tutorial, really helps
excellent !!