#set of interface instances

1 messages · Page 1 of 1 (latest)

random canopy
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so I wanna make a hashSet<Components> Components is the interface to store objects from classes that implement component. specifically hashSet cause I don't want 2 objects of the same class to exist together. I imagine, I would have to overwrite hashcode for every single one of those classes to return hash(class) or something. any way around this?

shy oceanBOT
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<@&987246399047479336> please have a look, thanks.

shy oceanBOT
#

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dire jacinth
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@random canopy Yeah, just have the classes hash their contents

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you misunderstand hashsets

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let me ask

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Are components "values" - their equals is based on the contents of their fields

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Or are they "objects with identity" - their equals should be the same as ==

random canopy
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hmmm I'm a bit confused by the question

dire jacinth
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show me a Component

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an example one

random canopy
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ooh boy

# 
package Utils.Components;

import Utils.Component;
import Utils.GameObject;
import main.GamePanel;

import java.awt.image.BufferedImage;

public class SpriteRenderer implements Component {
    private BufferedImage currentSprite;
    private GamePanel gamePanel;
    private GameObject parentObject;

    public SpriteRenderer(BufferedImage sprite, GamePanel gamePanel, GameObject parentObject) {
        this.currentSprite = sprite;
        this.gamePanel = gamePanel;
        this.parentObject = parentObject;
    }

    @Override
    public void start() {

    }

    @Override
    public void update() {
        this.gamePanel.drawSprite(currentSprite, parentObject.getTransform().getPosition());
    }

    public BufferedImage getCurrentSprite() {
        return currentSprite;
    }

    public void setCurrentSprite(BufferedImage currentSprite) {
        this.currentSprite = currentSprite;
    }
}
dire jacinth
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okay so you want a hashset of components

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why don't you want a List

random canopy
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right, I understand that hashset is meant more for values, I guess I just wanted to see if there was a collection specifically for unique classes

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but yeah I'm using list now

dire jacinth
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well a HashSet would work as is

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but it would not be ordered

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i would suggest LinkedHashSet if you want the order of components to stay the same

random canopy
dire jacinth
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that would still have an order like a list, but would remove the chance of accidentally adding the same components twice

dire jacinth
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If you want that I would say use

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LinkedHashMap<Class<? extends Component>, Component>
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so you map classes to the one component

random canopy
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oh shit

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oh that's

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sexy

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damn

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yeah that looks perfect gahdamn

dire jacinth
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or for faster lookup

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...nah nvm you got it

random canopy
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yup, that's awesome man thanks

dire jacinth
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i was gonna say IdentityHashMap, but idk

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that loses order

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btw I am hard assuming that

  1. You are making a game
  2. These are "ECS" components
random canopy
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definitely making a game, what's ECS lol

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it's possible I'm doing that rn without knowing it but yeah I'm going for a similar structure to unity gameobjects and stuff

random canopy
dire jacinth
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the 2nd talk is what introduced me to the concept

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"Entity Component System"

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also I'd love to see your game code

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if you are willing

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I mostly see shitty website projects on here

random canopy
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ooo thanks, I'll def check those out since it's kinda my dream to actually get into game dev some day lol

random canopy
# dire jacinth if you are willing

ofcourse, but fair warning, haven't set up like a solid update loop yet, I have frame update set up and I'm just using that for now lol

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but also I don't really have much of a game going on rn, just setting up that component system

dire jacinth
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(would be pretty funny if you watch those two videos then just use ashley)

random canopy
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what, like just rip the code from there or something lol

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oh it's a whole ass framework nice

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yeah ngl I've been intentionally trying to stay away from frameworks for this specific thing cause I wanna see how stuff works on the inside I guess

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also wait here's some game code, again, not much game going on yet, so most of what I have to be proud of is the component stuff lol

shy oceanBOT
random canopy
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oh yeah, since I'm trying to remake pokemon firered, I also set up this grid class

# 
package Utils.Components;

import Utils.Vector2;
import main.Game;

public class Grid {
    private int cellWidth;
    private int cellHeight;

    public Grid(int cellWidth, int cellHeight) {
        this.cellWidth = cellWidth * Game.PIXELS_PER_UNIT;
        this.cellHeight = cellHeight * Game.PIXELS_PER_UNIT;
    }

    public Vector2 gridToWorldPosition(Vector2 gridPosition) {
        return new Vector2(this.cellWidth * gridPosition.getX(), this.cellHeight * gridPosition.getY());
    }

    public Vector2 worldToGridPosition(Vector2 worldPosition) {
        return new Vector2(worldPosition.getX() / this.cellWidth, worldPosition.getY() / this.cellHeight);
    }
}
shy oceanBOT
dire jacinth
random canopy
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i

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you what

dire jacinth
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you can compile the rom yourself

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change the code and make a modded version

random canopy
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well ok I mean it doesn't change stuff for me all that much, I just wanna make it for the sake of making it lol

dire jacinth
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oh yeah sure

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but if when you are done with this if you want to do another pokemon thing

random canopy
dire jacinth
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for that there is the source code

random canopy
dire jacinth
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but also other battle systems

random canopy
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man ok that's great, I can actually learn something now

dire jacinth
random canopy
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thanks em, I saved those, gonna be a huge help

random canopy
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alright well thanks again em! cya