WTF Is? Projectile Movement Actor Component in Unreal Engine 4 ( UE4 )

[@TastelessSoftware]

I just watched a bunch of videos on this subject and they were all useless, until I found this one. Thank you for giving a comprehensive and thought-out tutorial.

[@flylivesmatter6351]

As Unreal it might sound, this man is UE4 half-god! Thank you.!!

[@alg0801]

" If the Updated Component is simulating physics, only the initial launch parameters (when initial velocity is non-zero) will affect the projectile, and the physics simulation will take over from there." From the docs.

[@AndreaCiani]

That trick of the root component is awesome. I didn’t know that! Thaaaaaanks!!!!!

[@maximilianhohl412]

You are my favorite coding prof!

[@joegun3776]

how do you get that default scene root component. I cant find it

[@Video-by6lp]

Always when I'm see your lessons. I'm understand all. Thank you very mutch.

[@videohelper2299]

Hi Mathew, thank you for this helpful and practical tutorial. If I may ask, how could I get the node that says, " Target Default Scene Root" (time stamp 10:47), it's the node that is connected between the GET and the Homing Target Component. I'm a bit stuck on this one. Thank you in advance.

[@pamparam3495]

you can transform actor to scene component(which is needed for Set Target Component node) by using Get Component by Class node and choose "Scene component" in drop menu

[@FPChris]

I can get the PM to autoactive with an arrow initial speed and max speed. But I cant allow me to spawn an arrow, set the speeds then active. I'm trying to modify the initial speed based on draw length of the bow in VR. The max speed would be modified based on draw poundage of the bow.

[@Pr0toc01]

12:26 bloop When it hit the ground the first time I said "bloop" then heard you say it... LOL watched that far too many times and laughed way too hard. Thank you

[@jedizhawk]

Set Physics Linear Velocity seems great alternative

[@QuiteDan]

Is this the component that people use for (non-hitscan) bullets?

[@jamesk4195]

Extremely helpful! Thank you so much!!

[@andresestevez2701]

una duda como funciona cuando l proyectil tiene que destruirse en la memoria una vez utilizado dicho proyectil

[@themissfitmasscot6754]

So if I wanted to make airsoft gun physics where the bullet had “backspin” which would make the bullet curve upward initially to increase the distance of the shot, would that be possible?

[@이대현-w3l]

thanks for this great information. One question. Is there a way to restart the projectile movement again, after it stops? I'd like to hit the ball again which stopped simulation. I've tried deactivate and activate, but didn't work.

[@davidcurtishill]

Great video, but how do I "set homing target component" at 8:30? Cannot seem to find this...

[@MathewWadsteinTutorials]

That node is a part of the Projectile Movement component. You can drag off a reference to it, drag it from your components into the scene for example, then drag off that reference to get the Set Homing Target node

[@wildricknarcissot6031]

@@MathewWadsteinTutorials it would have been so simple to show and do it in your video, good tutorial but I don't understand why all dev who makes tutorial just pop an already made BP they created in the middle of their tuto and leave the person watching wondering how to set it up, instead of showing everything from A to Z, I was looking for the answer to the same question as David and sorry but I don't even understand the solution you gave, I don't see any reference to Homing in the projectile movement component 🤷‍♂ one more tuto where the dev is good but gives you half the details. Started super well and once more a BP coming outof nowhere that I have to figure how to create it when I would have love to just follow every stpe from A to Z and get a result....you are a Very good Dev Though Take care.

[@RimGeurts]

Thanks a million for doing this tutorial!

[@notabotname]

How can I set the peojectile movement by predict Projektile path

[@noisyether9211]

Hey if i wanted the projectile to start up with a slow looping up or down before launching at target how would i do that. Example like in the Multi targeting system in the market place.Or like in Zone of Enders. Thanks is you could help.

[@bencrane2940]

Hey after watching your video. i have a question. i know you can set the speed from the beginning but how would you have it so that every time a projectile is spawned the speed increases? for example the first projectile fires at 100 units then the second projectile fires at 200 units and the third at 300 units and so on..

[@MathewWadsteinTutorials]

+Ben Crane ok so you have a few options but yes you can adjust the max speed at runtime for this component. If you access it after it is spawned you can just get the ProjectileMovement component and then adjust max speed, or initial speed, or whatever else you want to adjust. An easier way might be to set up the code for this change in the Construction Script and then set up the number you want to adjust as a variable. Set the Editable and Expose on Spawn options on the Variable you just created to true. Now when you do a spawn actor to spawn this blueprint it will have on the spawn node this variable and you can actually set it as you are creating the projectile to spawn.

[@Bazinga73904]

How do you set velocity in the opposite direction. I know you say to set it in the negative, but if you do, it changes the behaviour of the component completely. I'm using just velocity btw

[@Bazinga73904]

In runtime I should add

[@ogradus]

How would you make a character a homing target?

[@meow75714]

OnProjectileStop and OnProjectileBounce never gets called for me. My root component is a StaticMesh. Anyone else having teh same issue?

[@meow75714]

I found out I had the Simulate Physics enabled. This is so bizare that it has multiple physics systems in the engine. THis is is weird

[@Szabiization]

Hey, you have a really great video! You explained it really well. Thank you! :D

[@noni0r]

hello, i have a quite complicated question. So i'm working on a ball passing in unreal tournament (called bombing run). I used a sphere trace channel line to hit the teammember, then i visually locked it with a widget, which works fine so far. Now i wanna spawn the ball on right click (which works) and move it with Projectile > Homing to the updated Movement Component of the teammember. Is that possible?

[@MathewWadsteinTutorials]

It seems like it would work fine. The Homing option is intended for pretty much what you want; Pick a target -> go to target automatically.

[@Hasan-gh9gv]

How can I change the initial speed of the projectile in blueprint ? Like If we press "H" default value + 1000.

[@MathewWadsteinTutorials]

The Initial Speed can only be changed in the Blueprint or in the Construction Script. Once it has been constructed the Initial Speed is no longer used. If you wanted something like that the Construction Script for the item could set the Initial Speed to the current initial speed (the default) + 1000. You could have it talk to another blueprint during construction, like say a manager of some sort, and it could ask it for the value you are plugging into 1000 so you can adjust it during gameplay if this is what you want.

[@Hasan-gh9gv]

Mathew Wadstein I'm a beginner in UE4. I want to increase initial speed in every 10 seconds. I'm setting value in blueprint but it's not changing the value of default speed.

[@Hasan-gh9gv]

I asked it to unreal engine too but didnt get the answer :( answers.unrealengine.com/questions/476081/how-can-i-change-projectile-movement-initial-speed.html?sort=oldest

[@bencrane2940]

Thanks man.. I gunna mess with it for a while and see what happens.

[@2infamouz475]

U can create a lite version of this pretty easily with c++ actor component. Something that just adds velocity on spawn with blueprintable variables for easy changes to its speed/direction etc. Thx for the tutorial gave me some ideas for a projectile class

[@wildricknarcissot6031]

Very good lesson !!!!

[@bencrane2940]

So basically after spawn i would need to set the velocity + the added speed?

[@MathewWadsteinTutorials]

+Ben Crane Basically yes *but* if you set them after spawning, such as setting initial speed in the begin play, it's not going to affect it as it has already spawned at that point and the initial speed was used. If you set it during construction, such as exposing a variable and setting initial speed during a Spawn Actor node, it will take affect basically "On Spawn" and adjust it immediately.

[@Lihusory]

When Stop. How i can move again with proyectile propieties. ( i wanna recycle the proyectile )

[@hadiyalee8836]

How to set the activation in the suqence

[@AninhiVlog]

hi Mathew, tks for toturial !!!, could you create toturial how to move, delete, rotate actor component by Mouse ?

[@markojotovic8991]

Best videos as always

[@JackeryPumpkin]

"Hello" "My name is Elder John and I would like to talk to you about the most amazing book"

[@bencrane2940]

Alright! kinda got it work but i very quickly noticed my Error. The first one will fire but then the second will quickly collide with it and destroy it before it can make it to it's target. because each projectile is firing faster then the previous. So yea thanks for the help but this idea is a bust lol.. so now i am just gunna keep them all the same speed and see if i an place a delay that will fire one projectile faster ever so often.

[@MathewWadsteinTutorials]

+Ben Crane The project has a collision on it that you can setup. You can create a custom collision channel for projectiles. You can then set up the collision on it to be a projectile for the collision channel and for it to ignore projectiles as well so it will basically not hit itself.

[@고망-j6v]

Thank you Mathew

[@cgraider]

keep up man, very helpfull

[@tianyuliu2748]

liked before watching

[@TheiLame]

12:26

[@itscrono7073]

thanks a lot man

[@月桂十二]

太厉害了

[@georgeperry6004]

thanks mate

[@borisvaudran7322]

nice job

[@JordanService]

Nice video.

[@malomansal1896]

You started well, and I was like "Thank God" someone is finally going explain clearly get movement out of objects. But then you brought up this random blueprint with an array(!), along with a scene component(!) with a homing option and a target, no explanation given how it works. No info how to maybe use this to explain how to shoot an object with speed and direction. I guess everyone has one blind downfall. Thanks for trying though.

[@andreasmuller9455]

thx