New extension: Grid system

[github-actions]

Description

This extension adds some useful tools to connect, move, and push objects around on a grid.

• Grid object behavior (handles most of the stuff behind the scenes)
• Actions to connect objects to each other (making them act as one bigger objects (these are called grobjects))
• The ability to move multiple objects at once.

How to use the extension

(copied from the extension's description)

1. Add the Grid object behavior to all objects that can interact with each other.
2. Set the grid size with the Set grid action.
3. Connect objects together to make more complex Grobjects (see below)
4. Flag objects that you want to move with the Flag for moving action.
5. Use the Calculate movement action to calculate which objects will move.
6. Use the Can move condition on the objects, and move them accordingly.

Important!
The extension often refers to things called "grobject". These are made of one or more connected objects with the Grid object behavior. Objects in the same grobject will stick to each other when calculating their movement.
It is important that you don't mix the two things together. An object is an object, and a grobject is one or more objects connected (yes. a single object on its own is also a grobject)!

Checklist

• I've followed all of the best practices.
• I confirm that this extension can be integrated to this GitHub repository, distributed and MIT licensed.
• I am aware that the extension may be updated by anyone, and do not need my explicit consent to do so.

What tier of review do you aim for your extension?

Community (Unreviewed)

Example file

GridSystemGameExample.zip

Extension file

GridSystem.zip

[pampogokiraly]

Also here is a list of ideas that I didn't implement, but might return to in the future:

• Object and/or grobject push limit
• Pulling
• Friction. grobjects moving when next to a moving grobject (but wouldn't be pushed)
• Angle to direction expression

[D8H]

Thank you for submitting another extension.

Do you think your extension could be useful for this example?

• https://gdevelop.io/game-example/3d-sokoban

If so, making an update of this example could be a good way to test the extension.

[pampogokiraly]

Thank you for submitting another extension.

Do you think your extension could be useful for this example?

• https://gdevelop.io/game-example/3d-sokoban

If so, making an update of this example could be a good way to test the extension.

While it works, I wouldn't say this is a great example. Most importantly it doesn't show off the object connecting feature, which is kind of why I made the extension in the first place.
Also clearly the project wasn't made with the extension in mind (the player's origin is at its center ??), and also the extension wasn't made with 3d in mind (the behavior only works on sprite objects, though that can be easily changed to any object to make it work with 3d objects as well).

For such a simple game like sokoban, I don't think using this extension is easier (though its easier to understand than the while event stuff in my opinion), but it was never made with simple games in mind.

sokoban.zip

[D8H]

Ok, it makes sense.

[pampogokiraly]

Quick update fixing a critical bug with the Connect by numbers action (no idea how I didn't notice it before, but oh well its fixed now), and also added a new basic expression.

GridSystem.zip

[VegeTato]

Hello @pampogokiraly Thank you for submitting this great extension ! 💪
It will come very handy for the users.

Quick update fixing a critical bug with the Connect by numbers action (no idea how I didn't notice it before, but oh well its fixed now), and also added a new basic expression.

GridSystem.zip

Can you please update the example and the extension in this PR to the latest version?
For the example, just drop it in the comments.
For the extension, you must use this code !update (your extension file.zip here)

So we can review the latest version of the extension and see it in the example.

[github-actions]

Can't update the extension, as it doesn't pass automatic tests:

❌ 1 Error found in extension 'CountdownTimer':

  ⟶ ❌ (🔧) [Dots in sentences]: Field 'sentence' of the function 'StartCountdown' has a dot, but it is forbidden there!


❌ 1 Error found in extensions - please fix it before generating the registry.

[github-actions]

Can't update the extension, as it doesn't pass automatic tests:

❌ 1 Error found in extension 'CountdownTimer':

  ⟶ ❌ (🔧) [Dots in sentences]: Field 'sentence' of the function 'StartCountdown' has a dot, but it is forbidden there!


❌ 1 Error found in extensions - please fix it before generating the registry.

[pampogokiraly]

!update
GridSystem.zip

[github-actions]

✅ Successfully updated the extension.

[pampogokiraly]

GridSystemGameExample.zip

Here is the updated game example as well.
I also added an "interact" property to the behavior (if turned off, objects will not interact with each other when calculating movement).

[D8H]

The extension name is not precise enough.

[pampogokiraly]

Well... I couldn't really think of anything better. I'm open to suggestions though.