I'm using Godot, but this tutorials was still able to help me understand the basic logic and functionality of the code Thanks for the help! The waves are working perfectly and the prototype of my game is actually really really fun!! :)
I did something similar for a wave based space shooter a couple of years ago. Instead of individual units the spawner "bought" small groups of enemies called "PricedWaves". Developers think alike it seems :P
Thanks for this tutorial, I've been looking for a tutorial that's short, and understandable! I'm making a top down shooter that's based on wave system where this video helped me a lot!
amazing video, but I've got a problem , while running your code (at 3:30 in video) my Unity freezes for more than an hour and crashes, idk why it might be a problem but I think I need to rewrite the code
Did you use the 2 scripts in the description? You need to make sure you set EVERYTHING correctly in the inspector, give your wave spawner the "WaveSpawner" tag, and attach the enemy wave tracker to your enemies.
@@ThatOneUnityDev so I've spend some time with this code and everything is working fine, but i sometimes get errors like : ObjectDisposedException: SerializedProperty enemiesToSpawn.Array.data[0] has disappeared! or InvalidOperationException: The operation is not possible when moved past all properties (Next returned false) and type is not a supported pptr value UnityEditor.RetainedMode:UpdateSchedulers () I don't really know what is up with that one, it won't crash my game but it makes confusing mistakes for example the last enemy in the enemiesToSpawn Array will spawn and won't erase that last Array slot and new array is being created in the same time so unity is getting upset about this. So it's not really a big thing but it's an error message so I don't think that I can ignore this one. I don't really know how to resolve this one, i thought about creating coroutine to delete array index after 1 second but It did not work as I thought it would. If you could tell me what could cause this to happen i would be glad.
@@Matthew-iy5lt for the ObjectDisposedException etc... ? no not really, I've run some tests and research, and come to conclusion that this error message literally does nothing XD, It doesn't cause any lag (I left the game ride on for 10h nothing lagged so that's it) it doesn't crash anything at any time and I think it's just unity's way of telling us "omg something deleted this serialized field and I don't know what plz help" I might be wrong but I don't have any idea for fixing this issue XD On the other hand I plan on cleaning my code up , setting up setters getters and references instead of public variables etc so maybe then I will invent solution, but for now I can't help myself or you , sorry :C If you find a solution please let me know ^^
@@steventomek4236 Apparently it's an issue with unity. The only time this issue appears for me is when I have "WaveSpawner" selected in the hierarchy not sure if it's the same for you. The error message doesnt appear as long as I dont have it selected.
At the bottom of fixed update, you will notice an if statement, this is checking if the wave time is less than or equal to 0, and all enemies are defeated. Inside is when it updates to a new wave. Rather than having it start a new one right away, you can implement a timer, or even have an additional bool, that you trigger whenever you like in your game. Happy creature slaying! :)
Hey, this is great stuff and exactly what I needed for a combat-based infinite runner I'm making. However I'm using object pools for my enemies since it's for mobile, and I'm trying to work out what I'd change in this code to make it use pools instead of instantiate calls. I'd guess I need something in the Enemy class that retrieves the pooler from the enemies?
Thanks for watching! Exactly, anywhere we are instantiating, replace it with your pool logic, and the same goes for destroying! Otherwise everything is the exact same! Cheers! :)
I'm not too sure I understand. So in the code for the wave spawner, there is a variable to control the wave duration, which slowly release enemies based on that number. Then when they are all defeated, the wave number increases and the difficulty increases as well.
@@ThatOneUnityDev Okay thanks a lot! I'm making kind of like a plants vs zombies kind of game so I wanted spawning enemies to be slow and progressive, thanks for the help!
i really like this system, one problem though, when i kill an enemy, in the enemy script i use the Destroy method, and inside the Spawned Enemies list the game object is empty, but the space in the list is still there, i dont know how to fix this issue
No, your not missing anything. I left it that way on purpose, as you might have a different 'event' that increases the wave. Ex: killing all enemies, exiting a shop, etc. Whenever you want the next wave to start, all you need to do is increase the currwave variable by 1, and call the generate wave function. If you have any issues, you can head over to the discord, and we will be glad to help! :)
Hey any chance you can help me out I am getting Error \ Exception : "ObjectDisposedException: SerializedProperty enemiesToSpawn.Array.data[1] has disappeared!" I really cant understand what I need to do here is it a way to ignore that exception ? . It's really not so important if some enemies are disappearing.
Thank you so much! You can for sure expand upon this to allow for multiple locations! If you need help, you can pop over to the discord and either myself or others will give you a hand! :)
JUst create a list similar to the enemies. When calling for the spawn point, create a random range to select from the list to choose its destination. Hope that helps!
wow really cool!! Question: Can you help understand how can I make the "SpawnLocation" object to make the enemies spawn with random positions around the player?
If i'm understanding correctly, all you would need to do is before spawning the enemy, just grab a random point inside a circle around the player, and set the spawn position to be that point.
Your tutorial is really awesome, honestly one of the best i've seen for wave spawner. But how do you tackle the problem of spawning on multiple location?
The reason this is happening, is because you have a large amount of enemies spawning on that wave, so many in-fact, that it cant stretch them over your wave duration. To fix this, you either need to increase your wave duration, or have other higher value enemies it can choose from, to lower the amount that are spawning. Alternatively, you can replace the GenerateWave function to this: pastebin.com/fCGkaBFS ... This will default a 0.25f second delay when you run into this problem.
If you mean object pooling, you can feel free to add that at any point. But as a general rule I usually tend to add object pooling if I spawn an object 20 or so times in a project.
Hi, I can't get enemies to spawn after I killed them all. For the enemy tracker, I have tags on my enemies of "Weak Point" so I switched that out for the "WaveSpawner" but it is not working right. Any help on this would be greatly appreciated! void OnDestroy() { if (GameObject.FindGameObjectWithTag("Weak Point") != null) { GameObject.FindGameObjectWithTag("Weak Point").GetComponent().spawnedEnemies.Remove(gameObject); } }
hey there, i've managed to get this to work fine, apart from the spawn location seems static? if the object in the field changes its x & y, the wavespawner doesnt seem to notice this and keeps spawning the enemies at the original x & y point, how do i work around this? thx
That's odd. I tested it, and it appears to be working as you intended. Perhaps you are moving the wrong object? If you are using multiple spawn locations it is set to ping pong between all of them.
Sry for da aggression video definitely isnt terrible just been had a couple terrible hours trying to figure shit out but got it my bad if anyone runs into a problem feel free to ask i definitely ran into a couple 😅
Great System thank you very much the only problem i have is that on wave 4 or 5 the spawn interval is 0 and every enemy spawn at the same time this looks realy buggy can u help me fix this?
@PF Redot just change waveDuration to float. It will look like this: public float waveDuration; The issue is with the integer division, when the number of enemies is very high, the resulting value is 0.
After the video I spent awhile skimming through the video because I was like where did I miss the part where it continues to spawn waves?? I didn't realize that you left that part out and that the code is in the pastebin links. Just a heads up but maybe make a pinned comment letting people know that :)
That's a good idea! Originally I wasn't going to add that feature, as you may want to spawn the wave according to some other parameter (after upgrading for example). But I added it after the fact, as well as additional spawn points, and a few other features people in the discord were asking about.
For anyone wondering why your next wave isn't starting, the code in the video ins't complete, but there is the completed code in the description.
Very helpful. Not too complex so as to lose sight of the goal but complex enough to make it interesting. Thank you!
Thanks for watching! Glad you enjoyed the video! :)
Such a great video! Love how the code is so simple and makes it open to adding in other elements as well!
I'm using Godot, but this tutorials was still able to help me understand the basic logic and functionality of the code
Thanks for the help! The waves are working perfectly and the prototype of my game is actually really really fun!! :)
@@ImOmerAhmed That's great! Thanks for sharing! It's always nice to hear about other people's game projects! :D
I did something similar for a wave based space shooter a couple of years ago. Instead of individual units the spawner "bought" small groups of enemies called "PricedWaves". Developers think alike it seems :P
Thanks for this tutorial, I've been looking for a tutorial that's short, and understandable! I'm making a top down shooter that's based on wave system where this video helped me a lot!
Hey! This is a pretty cool concept. Never have I thought about it this way.
Very cool guide! So much space to add my own features 👍
Thank you so much! :)
What a great video man, thank you!
Thank's for watching! Glad you liked it! :)
Very cool approach - thank you for the guide!
No problem! Thanks for watching!
Thanks man! Works and is a happy addition to any spawn system.
amazing video, but I've got a problem , while running your code (at 3:30 in video) my Unity freezes for more than an hour and crashes, idk why it might be a problem but I think I need to rewrite the code
Did you use the 2 scripts in the description? You need to make sure you set EVERYTHING correctly in the inspector, give your wave spawner the "WaveSpawner" tag, and attach the enemy wave tracker to your enemies.
@@ThatOneUnityDev so I've spend some time with this code and everything is working fine, but i sometimes get errors like :
ObjectDisposedException: SerializedProperty enemiesToSpawn.Array.data[0] has disappeared!
or
InvalidOperationException: The operation is not possible when moved past all properties (Next returned false)
and
type is not a supported pptr value
UnityEditor.RetainedMode:UpdateSchedulers ()
I don't really know what is up with that one, it won't crash my game but it makes confusing mistakes for example the last enemy in the enemiesToSpawn Array will spawn and won't erase that last Array slot and new array is being created in the same time so unity is getting upset about this. So it's not really a big thing but it's an error message so I don't think that I can ignore this one.
I don't really know how to resolve this one, i thought about creating coroutine to delete array index after 1 second but It did not work as I thought it would. If you could tell me what could cause this to happen i would be glad.
@@steventomek4236 Did you ever find a solution for this? I'm currently having the same issue.
@@Matthew-iy5lt for the ObjectDisposedException etc... ? no not really, I've run some tests and research, and come to conclusion that this error message literally does nothing XD,
It doesn't cause any lag (I left the game ride on for 10h nothing lagged so that's it) it doesn't crash anything at any time and I think it's just unity's way of telling us
"omg something deleted this serialized field and I don't know what plz help"
I might be wrong but I don't have any idea for fixing this issue XD
On the other hand I plan on cleaning my code up , setting up setters getters and references instead of public variables etc so maybe then I will invent solution, but for now I can't help myself or you , sorry :C
If you find a solution please let me know ^^
@@steventomek4236 Apparently it's an issue with unity. The only time this issue appears for me is when I have "WaveSpawner" selected in the hierarchy not sure if it's the same for you. The error message doesnt appear as long as I dont have it selected.
Nice tutorial. But I just wanna ask that how can I add a waiting time between waves. I tried routines but didn't work.
At the bottom of fixed update, you will notice an if statement, this is checking if the wave time is less than or equal to 0, and all enemies are defeated.
Inside is when it updates to a new wave. Rather than having it start a new one right away, you can implement a timer, or even have an additional bool, that you trigger whenever you like in your game.
Happy creature slaying! :)
@@ThatOneUnityDev thanks dude.
Thank you!!! Explained really well! It works!!!
Hey, this is great stuff and exactly what I needed for a combat-based infinite runner I'm making. However I'm using object pools for my enemies since it's for mobile, and I'm trying to work out what I'd change in this code to make it use pools instead of instantiate calls. I'd guess I need something in the Enemy class that retrieves the pooler from the enemies?
Thanks for watching! Exactly, anywhere we are instantiating, replace it with your pool logic, and the same goes for destroying! Otherwise everything is the exact same! Cheers! :)
This was perfect, thanks so much!
Hey ThatOneUnityDev, I was wondering how to make a difficulty system overtime because for my game it wouldn't work with all enemies spawning at once.
I'm not too sure I understand. So in the code for the wave spawner, there is a variable to control the wave duration, which slowly release enemies based on that number. Then when they are all defeated, the wave number increases and the difficulty increases as well.
@@ThatOneUnityDev Okay thanks a lot! I'm making kind of like a plants vs zombies kind of game so I wanted spawning enemies to be slow and progressive, thanks for the help!
That was really nice!! Ty bro
This is gold
This is great!!
cannot divide by zero error?
Thank you for the great tutorial.
for smr on my system the wave spawner doesnt function at all.. it just says entering play mode.. but never loads up neither on engine oor in build
i really like this system, one problem though, when i kill an enemy, in the enemy script i use the Destroy method, and inside the Spawned Enemies list the game object is empty, but the space in the list is still there, i dont know how to fix this issue
Late, but be sure to remove the enemy from the list before destroying it.
My currwave doesn't update to a new one after I kill the enemies. One wave and it's over. Am I missing something?
No, your not missing anything. I left it that way on purpose, as you might have a different 'event' that increases the wave. Ex: killing all enemies, exiting a shop, etc. Whenever you want the next wave to start, all you need to do is increase the currwave variable by 1, and call the generate wave function. If you have any issues, you can head over to the discord, and we will be glad to help! :)
Hey any chance you can help me out
I am getting Error \ Exception :
"ObjectDisposedException: SerializedProperty enemiesToSpawn.Array.data[1] has disappeared!"
I really cant understand what I need to do here
is it a way to ignore that exception ? . It's really not so important if some enemies are disappearing.
I may found a solution with this:
void OnValidate() {
enemiesToSpawn.RemoveAll(item => item == null);
}
Is this good for a 2 side scroller wave defense?
Hi! First of all this is great! but is there a way for enemys to spawn in multiple locations?
Thank you so much! You can for sure expand upon this to allow for multiple locations! If you need help, you can pop over to the discord and either myself or others will give you a hand! :)
JUst create a list similar to the enemies. When calling for the spawn point, create a random range to select from the list to choose its destination. Hope that helps!
Create an array of spawn points and then on spawn you loop through them and pick a random one
wow really cool!!
Question: Can you help understand how can I make the "SpawnLocation" object
to make the enemies spawn with random positions around the player?
If i'm understanding correctly, all you would need to do is before spawning the enemy, just grab a random point inside a circle around the player, and set the spawn position to be that point.
If i change cost even on 1 digit from 1 to 5, unity stops working
Why is the one in the desc different than the one in the video?
A bunch of people flooded my discord asking for extra functionality. The link in the description is an improved version.
When i execute this Unity freezes OnEnterPlaymode loading and keeps loading.
Same did you fix it?
@@bluefiregaming1755 Unfortunately no.Someone pointed i should remove the .Clear line but not tried that option
Thanks I’ll try that
Your tutorial is really awesome, honestly one of the best i've seen for wave spawner.
But how do you tackle the problem of spawning on multiple location?
Thank you so much! :) .. In the code in the description, I have added support for multiple locations! :)
@@ThatOneUnityDev thank you so much!
when i get to wave 3 thescript spawns all of the enemis in 1 sec fix pls
The reason this is happening, is because you have a large amount of enemies spawning on that wave, so many in-fact, that it cant stretch them over your wave duration. To fix this, you either need to increase your wave duration, or have other higher value enemies it can choose from, to lower the amount that are spawning. Alternatively, you can replace the GenerateWave function to this: pastebin.com/fCGkaBFS ... This will default a 0.25f second delay when you run into this problem.
@@ThatOneUnityDev ohh ty man
How do I change the waves? And how do I get to a certain wave, the level ends
The code in the description starts the wave when all the enemies are killed.
@@ThatOneUnityDev Thank you!
When do you think a Booling system will be necessary,
If you mean object pooling, you can feel free to add that at any point. But as a general rule I usually tend to add object pooling if I spawn an object 20 or so times in a project.
Is there a way that the enemies go away after a few seconds
U could use a Courrutine for that
man this is gud stuff
Hi, I can't get enemies to spawn after I killed them all. For the enemy tracker, I have tags on my enemies of "Weak Point" so I switched that out for the "WaveSpawner" but it is not working right. Any help on this would be greatly appreciated!
void OnDestroy()
{
if (GameObject.FindGameObjectWithTag("Weak Point") != null)
{
GameObject.FindGameObjectWithTag("Weak Point").GetComponent().spawnedEnemies.Remove(gameObject);
}
}
i have the same problem
help pls
hey there, i've managed to get this to work fine, apart from the spawn location seems static? if the object in the field changes its x & y, the wavespawner doesnt seem to notice this and keeps spawning the enemies at the original x & y point, how do i work around this? thx
That's odd. I tested it, and it appears to be working as you intended. Perhaps you are moving the wrong object? If you are using multiple spawn locations it is set to ping pong between all of them.
Sry for da aggression video definitely isnt terrible just been had a couple terrible hours trying to figure shit out but got it my bad if anyone runs into a problem feel free to ask i definitely ran into a couple 😅
Thanks for watching! I'm glad you enjoyed it. 😂
Great System thank you very much the only problem i have is that on wave 4 or 5 the spawn interval is 0 and every enemy spawn at the same time this looks realy buggy can u help me fix this?
Did you find the solution? I'm having the same problem.
@@pfredot4673 i found a workaround i made a if statement
if(spawnInterval
@@JOHNSMITH-sj3lg Thank you for the reply, i actually made something similar too.
@PF Redot just change waveDuration to float.
It will look like this: public float waveDuration;
The issue is with the integer division, when the number of enemies is very high, the resulting value is 0.
@@PedroHenrique-nk5rf thank you sooo much brother👌
I'm subbing
After the video I spent awhile skimming through the video because I was like where did I miss the part where it continues to spawn waves?? I didn't realize that you left that part out and that the code is in the pastebin links. Just a heads up but maybe make a pinned comment letting people know that :)
That's a good idea! Originally I wasn't going to add that feature, as you may want to spawn the wave according to some other parameter (after upgrading for example). But I added it after the fact, as well as additional spawn points, and a few other features people in the discord were asking about.
What logic is in your enemy scripts?
Why does that matter? This is a tutorial on spawning enemies, not making them
great video❤.Please, upgrade your microphone.
Error
CS0101
:(
You either have 2 WaveSpawner scripts in your project file, or your script isn't named the same as the class 'WaveSpawner'. - Minus the quotes.
@@ThatOneUnityDev Thank youuu
Ths for video) I am lose 1 hours, list empty enemies, bug Curr wave = 0, fuck, in unity inspector in fields.
i love you,good guy!
Haha, tysm! I'm flattered! ;)