thread

[deep dagger]

brb 1 min

[lean torrent]

Ok

[deep dagger]

Ok Im back, sorry someone called me

[lean torrent]

K

[deep dagger]

Anyways look in the unity editor in the top left @lean torrent

there should be something called file

[lean torrent]

Yeah

[deep dagger]

Open it, find build settings and then click add open scenes

[lean torrent]

Ok I clicked add open scenes

[deep dagger]

Basically it sets that game scene as scene 0. Remember how earlier I told you to write the SceneManager.LoadScene(0); and it had 0 in it? Now it opens that scene every time a collision is detected

[lean torrent]

Ah ok, when I clicked add open scenes I saw nothing happen is that normal or was something ment to happen?

[deep dagger]

So it reloads it. Do you have your game scene opened up?

[lean torrent]

The game itself, yes

[deep dagger]

Is there a little checkmark?

[lean torrent]

In scenes in build?

[deep dagger]

yep

[lean torrent]

I see a check next to scenes/samplescene

[deep dagger]

Sample scene is the game right?

[lean torrent]

I belive it is

[deep dagger]

You should notice a little 0 by it. Thats how the scene manager will know to load that scene when you ask it to load scene 0

[blazing kettle]

you should rename that

[lean torrent]

Yeah a 0 on the right

[blazing kettle]

installing a package... and it has "sample Scene" in it, will probably delete / override your scene.

[deep dagger]

Yeah maybe rename it to whatever you want. Like flappy game

[blazing kettle]

or if you delete the library folder

[lean torrent]

How do I rename it? I am right clicking on it from the game itself and no option rename

[blazing kettle]

Just go to file -> Save As

[lean torrent]

Ah

[deep dagger]

Ok so after that, you have collision working, and a way to reload/restart the scene, whats next?

[lean torrent]

Well I haven’t actully tested the script yet.

Lets try that now.

Oh

We have a good and bad situation here

Whenever I start the game the ball falls to the ground

So it’s in a constant loop of restarting

And even when I move it to the ground

[deep dagger]

You don't have a way to move the ball correct? so gravity is going to drop it

[lean torrent]

Oh I forgot to enable my walk and jump script

One sec

Ah I see it now I don’t put the ball on the ground I put ihigher up for time to move it

Perfect

[deep dagger]

Is there anything else thats missing now?

[lean torrent]

Now another thing could I add the flappy bird poles randomly generated with simple code or will it take more complex code

And if not do I have to manually add them?

[deep dagger]

I can tell you that you can generate random positions using Random.Range,

[lean torrent]

Could that be applied to a 2d map?

[deep dagger]

let me find a snippit

[lean torrent]

K

[deep dagger]

IEnumerator Example()
{
int RandomNumber = Random.Range(1,10);
Debug.Log(RandomNumber);
yield return new WaitForSeconds(2);
StartCoroutine("Example")
}

@lean torrent This generates a random number between 1 and 10 every 2 seconds

[lean torrent]

So how do I implement that into Generation of poles

[deep dagger]

Do you know how to instantiate objects?

Basically instantiate would be equivalent of spawning them

[lean torrent]

Not really.

[deep dagger]

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour
{
    public GameObject prefab;
    void Start()
    {
            Instantiate(prefab, new Vector3(0,0,0));
    }
}

This code spawns a prefab at 0, 0, 0

[lean torrent]

So I’m gonna make its own seperate script. Do I attach it to an object?

[deep dagger]

Yes

[lean torrent]

Which object

[deep dagger]

Youll need a poie spawner object

it can be an empty one

[lean torrent]

So like a cube

And I turn off rendering

[deep dagger]

If you want. Or create an empty game object

[lean torrent]

I’ll do that

So once I do that I don’t fully understand “how” it will spawn an object

[deep dagger]

Yeah its good that you asked since it can be a bit confusing

Instantiate is like a spawner. If you used /summon in minecraft youll know what I'm talking about

brb

[lean torrent]

K

[deep dagger]

You know what a prefab is right?

[lean torrent]

I belive it’s a thing that allows u to create and store a game object in it

[deep dagger]

Yeah its like a clone

Instantiate(prefab, new Vector3(0,0,0)); is basically what you need. the identity part isnt necessary

[lean torrent]

Wait I copied and pasted the code for the generation and it’s giving me an error message

[deep dagger]

whats the error?

[lean torrent]

“The referenced script on this behavior (Game object ‘GameObject’) is missing!

[deep dagger]

is it null reference?

ok double click the error

are you in play mode still?

[lean torrent]

No

[deep dagger]

yeah ok double click the error

it takes you to where the error came from

don't mix up errors with warnings

[lean torrent]

It’s yellow text

[deep dagger]

errors are red and stop the game from working. Yellow warnings are just tips

[lean torrent]

Oh

[deep dagger]

that you can usually ignore

[lean torrent]

That’s good to know

[deep dagger]

yeah

[lean torrent]

Well when I pasted the script is it meant to do anything?

Or do I need to input certain information?

[deep dagger]

Instantiate(prefab, new Vector3(0,0,0));

Instantiate spawns an object

prefab is the object its going to spawn

and new Vector3 is the coordinates where its going to spawn the object

[lean torrent]

Ohhh

So whenever someone puts Vector3 thoose are coordinates?

[deep dagger]

Yeah essentially

wait its 2d right?

[lean torrent]

Yeah

[deep dagger]

new Vector2(0,0)

its now 2d!

[lean torrent]

Magic

[deep dagger]

So you can mix the 2 snippits together

[lean torrent]

I changed the code u sent me from vector 3 to vector 2 and now there is a red line under it.

[deep dagger]

Hmm did you take off a 0?

[lean torrent]

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour
{
public GameObject prefab;
void Start()
{
Instantiate(prefab, new Vector2(0, 0, 0), Quaternion.identity);
}
}

[deep dagger]

Vector2(0,0)

[lean torrent]

O

[deep dagger]

Also you can take the quaternion identity off

Its not necessary

[lean torrent]

So once I run the game this code will start generating stuff at 0,0

[deep dagger]

yes

Combining both snippits:

IEnumerator Example()
{
int RandomNumber = Random.Range(1,10);
Instantiate(prefab, new Vector2(0,RandomNumber));
yield return new WaitForSeconds(2);
StartCoroutine("Example")
}

what does it do?

[lean torrent]

It generates a random number then puts it in Vector3 coordinates?

[deep dagger]

yep

[lean torrent]

😮

[deep dagger]

every 2 seconds, it generates a random number, and spawns a prefab at 0 x and RandomNumber y

[lean torrent]

So how do I use that code to generate poles?

[deep dagger]

using UnityEngine;
using System.Collections.Generic;
using System.Collections;

public class Example: MonoBehaviour
{
    public GameObject prefab; // assign the prefab
    void Start()
    {
        StartCoroutine("Spawner")
    }
    IEnumerator Spawner()
    {
    int RandomNumber = Random.Range(1,10);
    Instantiate(prefab, new Vector2(0,RandomNumber));
    yield return new WaitForSeconds(2);
    StartCoroutine("Spawner");
    }
}

[lean torrent]

I copy and pasted that code and it’s redlining everything.

[deep dagger]

try it again?

Oh wait

[lean torrent]

Still some redlines

[deep dagger]

Ok now

[lean torrent]

New vector 2, RandomNumber and Spawner are redlined

[deep dagger]

Then save it and try it. You should be able to tweak it since you understand the gist of it all

[deep dagger]

Just save it

[lean torrent]

Now there is an error

Lines 9,34

[deep dagger]

Is it null reference?

[lean torrent]

It says

Assets/Generation.cs(9,34): error CS1002 : ; expected

[deep dagger]

That means a semi colon was expected at line 9

Semi colons are ;

Do you know what the issue is from that?

[lean torrent]

Now it says Assets/Generation.cs(14,29): error CS1503: argument 2: cannot convert from UnityEngine.Vector2 to ‘UnityEngine,Transform”

[deep dagger]

Hmm

[lean torrent]

And yeah c# needs a semi colon after every line of code

[deep dagger]

Ok lemme check on my unity, i was typing it all from my poor memory lol, i mightve messed something up

[lean torrent]

It’s ok

Lol

That’s impressive even from memory

[deep dagger]

Ok while my unity is booting up, try new Transform(0, RandomNumber);

instead of new Vector2

[lean torrent]

Now only the word Transform is redlined

[deep dagger]

Save it

[lean torrent]

Now it says on lines 10 34 ; expected

Lemme check

[deep dagger]

Yeah you should be able to figure it out :)

[lean torrent]

Ok now it says

CS1729: ‘Transform’ does not contain a constructor that takes 2 arguments

[deep dagger]

hmm

ok my unity booted up, lemme try

[lean torrent]

Alright

Did u say to do Transform or transform?

That might make a change

[deep dagger]

Hmm I'm gonna look up something

[lean torrent]

Ok

[deep dagger]

Maybe try quaternion idenitity

[lean torrent]

So what do I change, Transform?

[deep dagger]

Sorry Im trying things lol

[lean torrent]

It’s alright

[deep dagger]

Im mad it worked

Instantiate(prefab, new Vector2(0,RandomNumber), Quaternion.identity);

[lean torrent]

No redlines

Let’s try it out

[deep dagger]

The only thing left now would be making the pipes move

[lean torrent]

lines 19, 2 CS0116 a namespace cannot directly contain members such as fields or methods

As an arrow

Error

[deep dagger]

Yeah you have something with the same name somewhere

[lean torrent]

Totally did not accidentally press t

Ok that’s “fixed”

[deep dagger]

Yeah ok

click play?

[lean torrent]

Ok

[deep dagger]

Does it work or null reference lol

[lean torrent]

Works

[deep dagger]

Oo nice

[lean torrent]

I don’t see nothing generating tho

[deep dagger]

Do you have a prefab of the pipes?

[lean torrent]

I do not think so actully

[deep dagger]

Yeah you need to drag a prefab into the inspector of the pipespawner script

[lean torrent]

How the heck do I do that

[deep dagger]

Create a prefab first

[lean torrent]

How the heck do I do that

lol

[deep dagger]

I guess make an empty object and child 2 squares into it

Make both of them rectangles

So ones the top pipe and the other is the bottom

And then drag that empty object into the bottom project area where you kept all the scenes/scripts

Lemme know when you did it

[lean torrent]

Alright

Did it

[deep dagger]

then drag that prefab into the inspector

[lean torrent]

In the script?

[deep dagger]

Of the object with the spawner script

Well the empty game object with the script

[lean torrent]

So if I just dragged it out into the game nothing would appear right?

[deep dagger]

there should be a little empty box in the inspector, and drag the prefab in

not yet

Can you open the object with the spawner script in it?

[lean torrent]

Wait so I put the spawner script on the object

[deep dagger]

You need to put the spawner script on an empty object

and then a little box will be in the inspector

for the prefab

[lean torrent]

Ok when I make a game object and drag the script in it says, Can’t add script component “generation” because the script class cannot be found

[deep dagger]

Is the class name also generation

public class generation: MonoBehaviour

the script name and class name have to match

[lean torrent]

It’s public class Example : MonoBehaviour

Do I change that to generation

[deep dagger]

yeah

try it now

[lean torrent]

Ok did it

[deep dagger]

remember to drag the prefab in

[lean torrent]

Added it to a game object

Alright will do that

Ok did that

[deep dagger]

play

[lean torrent]

What was suppose to happen

[deep dagger]

its supposed to spawn the prefab

is there an error? maybe look in the scene

[lean torrent]

It makes GameObject1 clone but when I focus on it nothing is there

[deep dagger]

Hmm is the game object the pipe prefab or the generator?

[lean torrent]

The game object is a game object and 2 squares

I can’t seem to see the squares either

[deep dagger]

Can you see it in the scene editor?

[lean torrent]

I’m gonna remake it

The prefab

Ok now it actully spawns it

In the center of my game

[deep dagger]

Yeah at 0 x

[lean torrent]

Only 1 pole is that right?

[deep dagger]

every 2 seconds?

[lean torrent]

I started playing it like 10s ago

And only 1 pole

[deep dagger]

Could you send the script here

[lean torrent]

using UnityEngine;
using System.Collections.Generic;
using System.Collections;

public class Generation : MonoBehaviour
{
public GameObject prefab; // assign the prefab
void Start()
{
StartCoroutine("Spawner");
}
IEnumerator Spawner()
{
int RandomNumber = Random.Range(1, 10);
Instantiate(prefab, new Vector2(0,RandomNumber),Quaternion.identity);
yield return new WaitForSeconds(2);
StartCoroutine("Spawner");
}
}

[deep dagger]

Hmm well it is instantiating it

[lean torrent]

And that is in play mode, whenever I turn it off the pole disappears

[deep dagger]

Yeah its supposed to only spawn the pipes in on play mode. The only thing left is to make the pipes move

[lean torrent]

Well am I supposed to move it manually in play mode 1 by 1?

[deep dagger]

You can do it through script, I gtg soon so I can make it

Also its working on my end

[lean torrent]

I think I might head out it’s 2am and My brain is not working

Wanna dm it to me?

[deep dagger]

I'll send it here, should probably take 2 mins

[lean torrent]

Alright

I see this error The variable prefab of generation has not been assigned

[deep dagger]

You need to assign the prefab in the inspector

[lean torrent]

I did

I dragged GameObject into Prefab

[deep dagger]

Yeah and now drag the prefab into the generation script

[lean torrent]

What do you mean by drag it into the script?

[deep dagger]

https://blog.gemserk.com/wp-content/uploads/2020/05/datagameobject-objectcomposition.gif

Notice the health area in the inspector?

drag the prefab in there

[lean torrent]

Yeah

I did

[deep dagger]

Ok it should work

[lean torrent]

Nope

I have no idea

U mean like this right?

[deep dagger]

Yeah

Does an error show up?

Also is that in play mode?

[lean torrent]

It says The Variable prefab of Generation has not been assigned

In red

But I can still load in play mode

[deep dagger]

No you need to drag it in, in the scene mode or whatever, not in play mode or it wont save

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Pipe : MonoBehaviour
{
    //YOU NEED A BOX COLLIDER2D ON THE PIPES
    void Start()
    {
        Destroy(gameObject, 7f); //Self Destructs after 7 seconds otherwise lots of lag
    }

    void Update()
    {
        transform.Translate(-Time.deltaTime * 1, 0, 0); // moves -1 x every second. You can change the 1 to a 2 or something to speed it up.
    }
}

Also theres the pipe script

You can tweak the timings and stuff

[lean torrent]

Ah

The inspector I just showed you was not in play mode

I’m not doing anything in play mode

[deep dagger]

Hmm, double click the error

Does it do anything?

[lean torrent]

Yeah

At line 10

[deep dagger]

StartCoroutine("Spawner"); this?

[lean torrent]

Yeah

It suggests I do _ = in front of it

Should I do it?

[deep dagger]

Is it yellow or red

[lean torrent]

The error itself was red but I’m able to enter play mode in the script it’s not red there’s a symbol near the 10 line

[deep dagger]

Ummm you can, but I don't know is lol

[lean torrent]

Still ain’t working

You know what

Since this is the dummy version of my flappy bird

I’m gonna install the pipes manually

And in my v2 version I’ll work on the scripts

It’s like 2:30 I can’t even think thank you very much and I’ll cya later

[deep dagger]

From here, just create a new script called Pipe, paste the pipe code in, and drag it onto the pipes prefab

yeah and gn

[lean torrent]

Alright

Gn

[lean torrent]

@deep dagger I doubt I will ever see this but I presented janky flappy bird to my school with minor adjustments and they loved it

I told them how I’m starting to make new games and they said tomorrow you come up and present a new game concept

So whenever u see this thank you

[deep dagger]

Glad I could help! :)