Spawnpoints: location and disappear

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-11-21 18:15:50
User: CalvinMT [] (age: 1451 days 🔥; posts: 114)}
I'm trying out the spawn features, but encountered two problems.
I've got this second line in the Game class under "@OverRide public void prepare()":
private EntitySpawner <Ennemy> ennemySpawner; ennemySpawner = new EnnemySpawner(getEnnemySpawnPoints(), 1000, 5);
1000 is the time to wait before the next spawn (in milliseconds).
5 is the number of entities to spawn.
In other words: spawn 5 entities each second (I think...).
Problems:

• 1. When the entities are spawning, they disappear one after the other in a flash, except for the last one which stays at its place until the next spawn (I checked the environment and they are still in memory).
• 2. I've got four large spawnpoints, but the entities only spawn in the corners that positions the spawnpoints they're in.
  I just got an idea for the second one.
  When a new entity is created, its location is on: ".getSpawnPoints().get(0).getLocation()".
  How can I randomize the location while staying in the spawnpoint?
  Would anyone happen to have an idea why these are happening?

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-11-24 15:57:52
User: CalvinMT [] (age: 1451 days 🔥; posts: 114)}
I had a good look around the files and found something interesting in "EntitySpawner.java" (Envirenment folder).
The spawned entity's location is set at line 134, but it only gets the location (x & y coordinates) of a spawnpoint.
Shouldn't the spawned entity's location be set randomly between the coordinates and the size of a spawnpoint?
Here's another way of explaining it:
I've got a spawnpoint which coordinates are (x=0; y=0), and size is (width=100; height=100).
From what I read at line 134 in "EntitySpawner.java", entities will only spawn at (x=0;y=0) without taking care of the size of the spawnpoint. But my spawnpoint has more than 10000 possible location for entities to spawn at.
So, is it actually possible to do it? Is it planned to be done? Is it just a mistake in the code?
Or am I misunderstanding something...?

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-11-26 09:53:15
User: nightm4re [Admin 👑, Mod 🔧] (age: 1567 days 🔥; posts: 185)}
CalvinMT Honestly, I think that both use cases are absolutely valid. It can make sense to always spawn stuff in the same place, but random variance might also be desired. We once implemented something like "Spawn Areas" for DR. LEPUS, which had the behaviour you want to achieve: Randomly picked spawnpoints within an Area.
We should offer both variants within the engine. (A "pickRandomLocation"- flag should suffice)

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-11-26 20:53:37
User: CalvinMT [] (age: 1451 days 🔥; posts: 114)}
For the second issue, I can't figure out where the code goes wrong... :/
Here's what's happening:
When the loop first hits 5 seconds, an entity spawns and the player can collide with it.
5 seconds later a second entity appears, the first one disappears but can still be collided with.
My question is, why is the first entity disappearing?
Any suggestions?
Ennemy extends Creature:
public Ennemy () { this.setName("ennemy"); this.initialize(); } private void initialize () { this.setController(MovementController.class, new EnnemyController(this)); this.setController(EntityAnimationController.class, new EnnemyAnimationController(this)); }
EnnemyAnimationController extends EntityAnimationController :
public EnnemyAnimationController(Ennemy ennemy) { super(ennemy, new Animation(Spritesheet.find("ennemy_32"), true), getEnnemyAnimations()); } private static Animation[] getEnnemyAnimations () { ArrayList <Animation> animations = new ArrayList <Animation> (); animations.add(new Animation(Spritesheet.find("ennemy_32"), true)); return animations.toArray(new Animation[animations.size()]); }
EnnemyController extends MovementController :
public EnnemyController (Ennemy ennemy) { super(ennemy); } @Override public void update() { super.update(); this.getEntity().getAnimationController().playAnimation("ennemy1_32"); }
EnnemySpawner extends EntitySpawner :
public EnnemySpawner (List<Spawnpoint> spawnpoints, int interval, int amount) { super(Game.getEnvironment(), Game.getLoop(), spawnpoints, interval, amount); this.setSpawnMode(SpawnMode.ONERANDOMSPAWNPOINT); } @Override public Ennemy createNew () { return new Ennemy(); }

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-11-29 19:34:20
User: Dmartin42 [] (age: 1435 days 🔥; posts: 36)}
@CalvinMT can we please get in contact. I have a few questions regarding your code and how to get my png into my game.

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-11-29 20:29:52
User: CalvinMT [] (age: 1451 days 🔥; posts: 114)}
Dmartin42
Yep! No probs.
Add issues on MY GitHub project (LITIengine_test) and I'll reply. ;)
I've also replied to a comment about importing sprites on this forum. I'll add a link here in a few moments.
By the way, I use the utiLITI and the sprites.info file to import sprites.
Edit:
Here's the post CalvinMT
And here's my Github: https://github.com/CalvinMT

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-10 15:36:02
User: CalvinMT [] (age: 1451 days 🔥; posts: 114)}
Hey !
I'm still troubled with this second issue and came up with a question.
Can two different entities use the same BufferedImage as their current sprite?

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-11 21:01:52
User: nightm4re [Admin 👑, Mod 🔧] (age: 1567 days 🔥; posts: 185)}
CalvinMT I've just cloned your repo and I'm looking into this.

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-18 16:23:38
User: CalvinMT [] (age: 1451 days 🔥; posts: 114)}
nightm4re
Hi !
I know it's a bit complicated at this time of the year, but I was wondering if you had any time to look at the problem...?

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-18 17:00:02
User: nightm4re [Admin 👑, Mod 🔧] (age: 1567 days 🔥; posts: 185)}
I've looked at it and there are problems with the EntitySpawner. That's actually an oooooooold class back from the days of LITI. tonight I'll have some more spare time after cooking myself some fine, fine salmon. 😆

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2018-12-18 17:24:38
User: CalvinMT [] (age: 1451 days 🔥; posts: 114)}
nightm4re
HaHa !
Well, have a nice meal !

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2019-01-05 15:09:39
User: CalvinMT [] (age: 1451 days 🔥; posts: 114)}
nightm4re
I know you told me not to touch at "EntitySpawner", but I just tried something and it worked.
All I did was deleting the line setting a map ID to the newly created entity in "EntitySpawner" in the "run" procedure at the end of the file (line 174).
https://github.com/gurkenlabs/litiengine/blob/master/src/de/gurkenlabs/litiengine/environment/EntitySpawner.java
I may need to dig a bit more into it to see if it could cause any trouble.
Let's just say that it's a workaround for the moment.

[nightm4re94]

^{This post has been migrated automatically from the old LITIENGINE forum (2018 - 2022).
Posted: 2019-01-05 19:12:10
User: Dmartin42 [] (age: 1435 days 🔥; posts: 36)}
CalvinMT
Calvin, you bad boy