How do I use spawners?

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-21 19:18:59
User: Dmartin42 [] (age: 1435 days 🔥; posts: 36)}
I know this has already been talked about, kind of, in another thread, but I am still unsure on the implications of the entity spawner. I have two Creatures which I would like to spawn them in with the spawner. I have no clue how to do it. Can I do two entities with one spawner?
Here is my code if you are interested.
https://github.com/Dmartin42/LitiEngineTest

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-21 19:41:10
User: CalvinMT [] (age: 1451 days 🔥; posts: 114)}
Dmartin42
It should be possible, but it doesn't work for me.
I can only have one entity spawned on the screen.
You can have a look over here: https://github.com/gurkenlabs/litiengine/blob/master/src/de/gurkenlabs/litiengine/environment/EntitySpawner.java
And there: https://github.com/gurkenlabs/litiengine/blob/master/src/de/gurkenlabs/litiengine/environment/IEntitySpawner.java
I also used the utiLITI to place each spawnpoints (FYI: they are currently spawnPOINTS, in the sense that they do not cover an area).
Basically,

• - Create spawnpoints in Tiled.
• - In their properties, you need to specify their type: SPAWNPOINT.
• - (optional) You can tag and/or name them aswell.
• - In your code, create an EnitySpawner class of your entity:

`public class EnnemySpawner extends EntitySpawner {
public EnnemySpawner (List spawnpoints, int interval, int amount) {
super(Game.getEnvironment(), Game.getLoop(), spawnpoints, interval, amount);
this.setSpawnMode(SpawnMode.ONERANDOMSPAWNPOINT);
}

@OverRide
public Ennemy createNew () {
return new Ennemy();
}

}Don't forget to change the "SpawnMode" as required. Then, after loading the environment, you need to create your new EntitySpawner.private EntitySpawner ennemySpawner;
// Load environment somewhere...
ennemySpawner = new EnnemySpawner(this.getEnnemySpawnPoints(), 5000, 2);`

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-21 19:51:21
User: Dmartin42 [] (age: 1435 days 🔥; posts: 36)}
CalvinMT
Calvin,
you're the real MVP.

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-21 19:56:41
User: CalvinMT [] (age: 1451 days 🔥; posts: 114)}
Dmartin42
Awww, stop it. I'm blushing now.
I hope it works for you.
If not, here's the thread with the futur fix: https://forum.litiengine.com/d/18-spawnpoints-location-and-disappear

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-21 20:02:13
User: Dmartin42 [] (age: 1435 days 🔥; posts: 36)}
CalvinMT
how do I create spawnpoints in Tiled?

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-21 20:04:25
User: CalvinMT [] (age: 1451 days 🔥; posts: 114)}
Dmartin42
Use the rectangle tool.
Don't forget to type in it's type in its properties..

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-21 20:17:10
User: Dmartin42 [] (age: 1435 days 🔥; posts: 36)}
Is its type a file, an int, or what?

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-21 20:17:47
User: Dmartin42 [] (age: 1435 days 🔥; posts: 36)}
CalvinMT
Is its type an int or a file, or what?

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-21 20:22:39
User: CalvinMT [] (age: 1451 days 🔥; posts: 114)}
Dmartin42
In Tiled, when you click on the shape you created, there's a property panel on the left.
You'll see a "Type" written in there with an empty box next to it.
In that empty box, write: SPAWNPOINT.

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-21 21:08:01
User: Dmartin42 [] (age: 1435 days 🔥; posts: 36)}
CalvinMT
Hey I figured out your problem!!!!!!!!!!!!!!111
So what is happening is the game is IN FACT spawning 5 (or how many you chose) every x secs. Except for it is spawning the same one over and over again. So essentially, there are 5 entities in the same location with the same x and y values and the you can only see one of them because of the game's rendering.

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-21 21:15:54
User: CalvinMT [] (age: 1451 days 🔥; posts: 114)}
Dmartin42
Good scenario, but not mine.
I'm trying to spawn 1 entity for every 5 seconds.

• - First 5 seconds, one pops up and starts doing what it's supposed to do (i.e.: going towards the player).
• - Next 5 seconds, another one pops up but the first one loses its sprite. I know it is still doing what it is supposed to do, even if invisible, because the player and the second spawned entity can collide with it.
  Good guess, though. ;)

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-21 21:35:16
User: Dmartin42 [] (age: 1435 days 🔥; posts: 36)}
CalvinMT
Ok. I understand. This shit is pissing me off. How did you get .getSpawnLocations() in ur inGame screen class to work?

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-21 21:46:00
User: CalvinMT [] (age: 1451 days 🔥; posts: 114)}
Dmartin42
I'm guessing your talking about this:
private List <Spawnpoint> getEnnemySpawnPoints () { Collection <Spawnpoint> points = Game.getEnvironment().getByTag(Spawnpoint.class, "ennemy_spawn"); if (points.isEmpty()) { throw new IllegalArgumentException("No ennemy spawnpoints found on the map."); } return new ArrayList <> (points); }
In Tiled, I added a custom property named "tags" with a string value: ennemy_spawn.
You can add a custom property in Tiled by first clicking on the spawner, and then pressing the "+" button at the bottom left of the screen.

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-21 23:58:03
User: nightm4re [Admin 👑, Mod 🔧] (age: 1567 days 🔥; posts: 185)}
guys, guys, guys. For now, please simply ignore the case that there is an EntitySpawner class. This was a custom implementation for LITI and has found its way into LITIengine in mysterious ways. It was made for one special use case that might not match your use cases, so please just use spawn points without the EntitySpawner. You can simply write some Manager class that implements IUpdateable to handle temporarily delayed spawning.
I hope to have a look at the EntitySpawner in the next days (sorry, CalvinMT!), but please do not get into that weird class too much.
(Also, language warning to Dmartin42 https://www.youtube.com/watch?v=hpigjnKl7nI)

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-22 00:24:17
User: CalvinMT [] (age: 1451 days 🔥; posts: 114)}
nightm4re
Didn't understand that first time round.
At least, everything else I brought up is good to use.
In other words, don't use the code written in this post: CalvinMT

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-22 15:02:40
User: Dmartin42 [] (age: 1435 days 🔥; posts: 36)}
nightm4re
Sorry, I did not think using those words was against the rules. Ok so I should just set the entity's location and not spawn them?
Because I’m just spawning in the player. Also if y’all are editing the spawned class, you should make it so one doesn’t have to spawn them in an interval. Like if they wanted to spawn only one entity.
CalvinMT