[#05] Shooting a weapon using Projectile Raycasts (with effects) 

UPDATE: Hi all, there is a small bug in the CrossHairTarget script which will cause the gun to fire backwards. Convert lines 22/23 to this: if (Physics.Raycast(ray, out hitInfo)) { transform.position = hitInfo.point; } else { transform.position = ray.origin + ray.direction * 1000.0f; }

This video deserves more view, literally hand to hand tutorial.

For those people who have a character close to camera, consider to use layers or tags to ignore the player on raycasts, or every ray cast will be absolute messy. Kiwicoder has a character far from the center of the cam, however, he can face problems when the cam is moving closer to character in some situations like when cam avoid clipping. PD: great tutorials dude (clap!, clap!, clap!)

You are the legend. Honestly, one of the best tutorial channel. The explanations are so clear. Absolutely deserve a lot of subscribers but for now just one more by me :)

Man just wanted to say this series is awesome! Thanks for taking the time to explain all this, it helps SO MUCH!

I know this is coming late from me. But I'd you're seeing this comment I just wanna thank you for how your tutorial have changed my Game Dev Journey

Best Unity shooter tutorial made EVER! YOU ROCK SIR

Thank you so much for this tutorial ! I had some troubles as the particles of the pack were different for me, with other settings. But I changed my projectile based shooting system to a hitscan one after seeing your tuto and it fix a lot of issues that I had. I'll just need to watch the 2nd part of the video now to implement some velocity and drop :) Thanks again !

For the ones who has a computer freeze after running game, it is happening because of the while loop. Change while( accumulatedTime >= 0) to while( accumulatedTime >= fireInterval). Fixed.

This tutorial solved my biggest game maker problem. Thanks a lot!

That's the best way to instantiate a hit effect I can imagine! You are a legend!

Amazing dude keep up the good work btw thnx for the tutorial series. i have only done game dev for 5 month now and i couldnt really understud c# or programing and i just kept researching and i saw your chanell and i kept following until i finished the series and i looked back at the code and i slowly understud how c# and programing works and then i changed it to an fps and im having with trying to make a game of my so thank you kiwi coder keep up the good work.

Another kiwi I've just started really getting into unity it's good to see another kiwi.

A super tutorial with wanderful explanation.

Thank you so much for this tutorial. Especially the final section

Fantastic Video! Extremely well taught, easy to understand, and pleasant to listen to. Thank you so much, this helped a ton! :D

I just finished this video. Your videos on this topic so far have been the best ever on RU-vid. Your detailed explanation of the complex content puts some courses on Udemy to shame. If you do a course on Udem, I will be one of the first to buy it. Great content!.

You are a Beast man

I made a actual pooled projectile spawn system. But i needed something like this and didn't know trail renderer was a thing. Thank you hahaha.

Thanks you very much for your tutorial on raycast ! For my video game, I don't need the "bullet drop" part, but until that, it's was interesting !

Still fantastic, much appreciated mate!

Excellent tutorial! I'm amazed at how much the muzzle flash and hit effects add to the realism. I checked a bunch of other comments to see if you had answered this question, so hopefully I'm not making you repeat something. How do you handle raycasting at objects that are really close to the player? I'm using a very similar raycast system from the center of the screen and making my bullets travel from the tip of the gun towards my aim target. If I walk up to an object so that I'm basically touching it, it become very obvious that bullets are shooting almost sideways out of the gun.

Thank you much , Your video is best experience to me.

Super awesome tutorial once again. took me all day but I got it all working lol. As a request it would be cool to see a state based character controller for like running jumping climbing ladders or walls etc later. or some tutorials on how to equip stuff to your character from like a shop (clothing items/armour etc). Thanks again!

thanks for the last part. I wasted 2 days finding and thinking how to perform that. although I didn't understand most of the codes for making a lot of functions but things are working for me and I can make the work done by that :D

These tutorials are just beautiful. Please create a patron so I can support you a bit. :)

Amazing content keep going

Amazing stuff!!! Golden guy this TheKiwiCoder!!!

You can also Calculate the Screen Width and Hight / 2 and make Target Center

If anyone cannot see the red line (created by Debug.DrawLine), make sure to enable gizmos

Since you seem very knowledgeable

Amazing ❤️

Very nice!

Absolutely love this solution, and the steps were really well explained! I do have one question, about the ray section function. You make a raycast from the start point, in the direction of and distance to the end point. Are there any advantages to this, compared to a linecast from start to end?

cool beans, thanks

Best, massive lifesaver

amazing thanks for video 😍😍😍

Amazing video !!! =)) Thanks

i couldnt make the material of the trail cuz i didnt find the same values to change can u upload the material ? i mean the material of the bullet tracer thanks for the tutorial it was helpful

Great tutorial love it you did it again !! Will you be doing a weapon switch ?? From rifle to pistol for example and maybe ammo counter maybe

Amazing job man! This playlist is gold 👍🏼

@TheKiwiCoder Hey man, having a small issue. If I move my character little by little the animation pose becomes warped until my normal holding the gun pose looks like broken wrists and physics from a world Doctor Strange frequents. It starts off behaving perfectly, but maybe bleeding kinematics causing pose warping? (The subtle inaccuracies adding up over hundreds of tiny movements until the referenced transforms resemble nothing of the initial values) I'm not sure but I'm at a loss. Did you or anyone else here experience anything like this?

Firstly a huge congrats! It is the best Raycast shoot tutorial I have seen. I am surprised by the so advanced level. How many years are you programming C#?

For those who are having white boxes in URP with the hiteffect particle, change the Dust shader to URP/Particles/Simple Lit

Very nice. How about sound effects and shells dropping on the floor?

Another kiwi? Great tut by the way

how would i make it to where the tracer shows up even when i shoot in the air

You da best🔥

For now im just copying for my uni project but i will be back to learnd this from the start

I would like to know if it is possible in any way to apply a particle system to the bullet as well?

what do i have to change in the code to use projetiles(bullet prefabs) instead of the trail render?

it says rig could not be found when I make it a pub variable and its not used in the script?

How would you implement an aim zoom that zooms in on the crosshair? I tried changing the field of view, but it just focuses on my look at target.

I just noticed that for me the particle (when I increase their size to shoot "spheres") appears flat instead of spherical, any idea how to fix this ?

Hey man !!! You are super

Thank you boss

I love this tutorial but after the 25 min it getting. Confusion for begginer like me and others so please explain everything thank you

This is awesome! Thank you so much. I am trying to make an "energy cannon" style weapon that shoots a decent-sized "energy ball" projectile at a slower speed than a bullet would travel. The methods you used seem like they should work for this use-case! Originally I was going to use a rigidbody with a sphere collider and Unity's physics system to calculate travel & hit detection, but I read that this may be performance heavy and a raycast-based projectile is more optimized. I particularly like the equation-based (deterministic) positioning of the bullet based on time. Some questions for you: 1. Why did you use 'LateUpdate' to calculate bullet travel rather than 'Update' or 'FixedUpdate'? I trust that this works, but it wasn't explained in the video. 2. Would it be "wrong" to use 'FixedUpdate' for calculating bullet travel/impact? And what are the implications of doing so? (For example, poor performance?) For #2 I understand that using 'Update' or 'LateUpdate' would always provide smooth visual movement of the bullet (since 'FixedUpdate' time may not always line up with the 'Update' loop, causing jitter). However, I'm second guessing myself because isn't 'FixedUpdate' the right thing to use if we're doing a physics calculation such as a bullet hitting a wall? If we used 'LateUpdate' then wouldn't the accuracy of bullet impact calculations differ based on each player's framerate, putting lower-spec players at a disadvantage? Could a combination of both be used - 'FixedUpdate' for hit detection and 'LateUpdate' for the visual? Or does it actually not matter that much and I am overthinking it? For a competitive multiplayer game I just want to make sure things are accurate *enough*, even if 'LateUpdate' is used.

Hello man! I did follow your tutorial but i can't manage to get my material right for the bullet tacer. It's invisible for me. I do see the fact that it's there whe i select it in my inspector. Have you ever had such an issue? great tutorial btw :)

Brilliant video - again! How do I change the rotation of the gun at this point? It's not quite pointing at the target dot when I aim. I can't find a way of doing it now everything is hooked up. Thanks

Excellent tutorial! I learned a lot from it. Thank you! At 3:28, I noticed you put the input processing code in the LateUpdate method instead of Update method. Are there any good reasons to do that, why not just put the code in Update method?

awesome tutorial! but I have a bit of a problem, when I add the bullet tracer and start playing it, the startpoint of the bullet tracer is too slow to catch up the gun point and after a few moment it catches up. How can I make this faster?

Very kool!

How would you make an object pool out of the bullets? This instantiates and destroys objects constantly which isn't optimal. I am having some issues with trying to modify your script to be able to use object pooling

I don't have RaycastWeapon Edit: got it to work. I just don't know how to delete all the instantiated objects Edit2: nevermind, I just didn't see the tutorial fully. Ok now I got everything to work. Thank you for the tutorial :D

This is a great video. I found that I had to test that bullet.tracer wasn't null in RaycastSegment. Weirdly the video stutters for me. 1080p60. No other makers videos do. Strange. Doesn't take away from the video though. Thanks ☺

Hey when i go fullscreen my particles just disappear i dont know what to do here someone have a fix?

Hey @TheKiwiCoder! I was just wondering, do your bullets also persist (dont get destroyed) when you aim and fire at horizon? I notice in the code that the maxLifetime of the bullet is only set OnHit, but not in the else statement. Awesome tutorial vids my man! Keep it up!

great !!!!!

I need to install wich package for having the Universal render pipeline particle ?

Hello, i'm follow the tutorial but i have a problem: My bullets is stoping in the mid air after some distance, how lower is the bullet speed the closer is the distance that the bullet stops, the bullets keeps going back and forward until hit something, like the character. sorry for my english, but i realy needs help.

The last part of the video (the part where you mostly do the scripting for bullet drop and bullet simulation) is kinda confusing and you went over it super quickly. It would be helpful to have like a conclusion or an overview of what you were doing (something like a drawing or illustration that explains the logic behind the script). That's just my two cents.

Gold again :)

Hey man! I have been following your tutorial. But I have to ask about the CrossHairTarget script. I followed the exact steps you say and all of a sudden my CrossHairTarget just aims at my player's shoulder. Basically, It acts as more as person with a camera than an actual target base. Is there anything around it?

Hey, Loving the tutorial but I'm having an issue. if I use the DestroyBullets function with => I will get an error in the console after shooting for a while stating that "The object of type 'TrailRenderer' has been destroyed but you are still trying to access it." However, if I change it to match the prompt on screen at 41:00 to use >= instead then I get the error "The name 'bullet' does not exist in the current context". Any ideas?

hey in the ray cast wepon script even when I am clicking the left mouse button it is not changing the is firing to true if some can help me out please

I have been having problems with the bullets instantiating the decal part of the hit effect. I noticed the decal part didnt have a particle so I tried adding. Seems my problem may be it is destroying the main prefab in the weapon.

Thanks for the great tutorial. I am learning so much with your videos. You are really awesome. I noticed an issue with the fire rate and have not found a solution to that yet. If i click as fast as i can, i am able to ignore the fire rate of the gun. This is easier to spot when the fire rate is set to a low value (e.g. 5). It has to do with resetting accumulatedTime and FireBullet() in StartFiring(). Since i removed both those line from StartFiring() function i am not able to fire faster than the fire rate, but also some manual shots get ignored because the accumulated time is never reset.

what the name of background music? that is very well

I'm having an issue with my raycast Debug.DrawLine at around 9:55. The line is not appearing. I have added Debug.Log(hitInfo.point) to print the endpoint to the console, which works properly, so the ray is being cast and intersecting with objects. Idk why the DrawLine is not working. Anyone have any suggestions? Edit: Never mind I just didn't have gizmos enabled.

After build muzzle flash is not working please tell me a solution

I have gotten to the end and now the trail and the impact effects have stopped working and the muzzle is constantly firing. isFiring is not constantly on and updates correctly to mouse inputs but the muzzle flash is constantly on. It is spawning in BulletTracer(clone)'s in the Hierarchy but I cannot see them and everything is set up correctly in the inspector. It was all working fine prior to the bulletdrop/speed updates. The bullet trail works fine if I drag the prefab into the scene the same for the hit effects which makes me think it is an issue with the ray cast. I have troubleshot this issue for some time now and can't figure out where I have went wrong as the code looks verbatim to what you have. using System.Collections; using System.Collections.Generic; using UnityEngine; public class RaycastWeapon : MonoBehaviour { class Bullet { public float time; public Vector3 initialPosition; public Vector3 initialVelocity; public TrailRenderer tracer; } public bool isFiring = false; public int fireRate = 25; public float bulletSpeed = 1000.0f; public float bulletDrop = 0.0f; public ParticleSystem[] muzzleFlash; public ParticleSystem hitEffect; public TrailRenderer tracerEffect; public Transform raycastOrigin; public Transform raycastDestination; Ray ray; RaycastHit hitInfo; float accumulatedTime; List bullets = new List(); float maxLifetime = 3.0f; Vector3 GetPosition(Bullet bullet) { Vector3 gravity = Vector3.down * bulletDrop; return (bullet.initialPosition) + (bullet.initialVelocity * bullet.time) + (0.5f * gravity * bullet.time * bullet.time); } Bullet CreateBullet(Vector3 position, Vector3 velocity) { Bullet bullet = new Bullet(); bullet.initialPosition = position; bullet.initialVelocity = velocity; bullet.time = 0.0f; bullet.tracer = Instantiate(tracerEffect, position, Quaternion.identity); bullet.tracer.AddPosition(position); return bullet; } public void StartFiring() { isFiring = true; accumulatedTime = 0.0f; FireBullet(); } public void UpdateFiring(float deltaTime) { accumulatedTime += deltaTime; float fireInterval = 1.0f / fireRate; while(accumulatedTime >= 0.0f) { FireBullet(); accumulatedTime -= fireInterval; } } public void UpdateBullets(float deltaTime) { SimulateBullets(deltaTime); DestroyBullets(); } void SimulateBullets(float deltaTime) { bullets.ForEach(bullet => { Vector3 p0 = GetPosition(bullet); bullet.time += deltaTime; Vector3 p1 = GetPosition(bullet); RaycastSegment(p0, p1, bullet); }); } void DestroyBullets() { bullets.RemoveAll(bullet => bullet.time >= maxLifetime); } void RaycastSegment(Vector3 start, Vector3 end, Bullet bullet) { Vector3 direction = end - start; float distance = direction.magnitude; ray.origin = start; ray.direction = direction; if (Physics.Raycast(ray, out hitInfo, distance)) { hitEffect.transform.position = hitInfo.point; hitEffect.transform.forward = hitInfo.normal; hitEffect.Emit(1); bullet.tracer.transform.position = hitInfo.point; bullet.time = maxLifetime; } else { bullet.tracer.transform.position = end; } } private void FireBullet() { foreach(var particle in muzzleFlash) { particle.Emit(1); } Vector3 velocity = (raycastDestination.position - raycastOrigin.position).normalized * bulletSpeed; var bullet = CreateBullet(raycastOrigin.position, velocity); bullets.Add(bullet); } public void StopFiring() { isFiring = false; } }

I installed the "universal render pipeline", to be able to use it in the shader, but the material was transparent, is there any alternative?

I saw these videos back in the day now i was working on a Shooting game ran into the same issue about crosshair. I was thinking about the solution. Then i remembered there was a Legend "TheKiwiCoder" who posted the solution about same issue

Could you please show how you light the scene? I have the same asset but it looks like shit on my pc

hi agin i find why bullet tracer dose not destroy because i froget enable autodestruct tick in trail renderer component 😅

hi thanks for this tutorial but i have a problem my bullet dose not destroy after maxLifeTime can you help me ? 🙂

maybe there is a problem if crosshair goes to sky and bullet shoot them bullet goes to player position how can we fix this ?

Heya, the gun always seems to fire twice when I click. Any idea why that might be happening?

Even after adding the CrosshairTarget to RayCastDestination, the debugging line is not emitted towards crosshair. Debugging line moving anywhere. PlZzzz Help😭

Great

When the bullet's effect is fired when it starts moving in the same direction as the player, the impact of the bullet is supposed not to move, but remains in the same place as the shot... Does anyone know the solution, please?

Hello, I have still this bug really what's wrong with cinemachine couldn't understand the bullet goes backwards especially when my character moves right side. if I fire a bullet without moving the character everything is normal. Could you please help me if you know how to solve this bug?

Hi @TheKiwiCoder ! While going through this tutorial, i'm facing an issue that the bullets are not being deleted automatically. Can you help me out?

Hey great vid I did the same but i dont see the red line when i am in game scene i can only see it in Scene scene and also the line dont show up when i look at the enemy head and when i look in the sky Please help

Greate tutorial series. Loved it. Has anybody else faced the below issue? hitEffect.transform.position = hitInfo.point; hitEffect.transform.forward = hitInfo.normal; hitEffect.Emit(1); The hitEffect is not facing the surface. As a matter of fact its rotation is unchanged and thus is visible from only one direction and sometimes looks odd. I also tride rotating it to "Quaternion.LookRotation(hitInfo.normal)" n it worsened and was no longer visible in any direction. Could any of you help me here.

greeat tutorial, i have only one small problem, the firerate is too fast no matter which value i put in the Fire Rate.

Can you try like a shotgun systen

Please can you show how to add mobile inputs on this game?

IN MY CASE WHEREEVER I CLICKED ON SCREEN LINE IS ONLY DRAWING DOWNWARD SIDE ,,,IS THERE ANY SOLUTION?