How do i "break" tiles and make them drop stuff?

[burnt locust]

hello i am making a small mining game and i wanna make it so that when you hit a tile within a zone (area2d for example) it will switch a frame and after a few hits break and drops gems or rocks like minecraft, how can i implement it in godot 4?

[rustic spear]

I made it like this for my procedural mining game:

Use a ray-cast to detect tilemap blocks. set/update it from the player position to the current mouse position.
Under the condition that you start pressing left mouse button and the ray-cast is colliding with a block, start a mining_timer
after the mining_timer timeouts, remove the tile from the tilemap, but before doing that check what type of block it is. If it is e.g. gold, then instantiate a gold in the tile position. that's it

[burnt locust]

yeah but how do i know what type of block it is?

does it needs to be a tile or a a scene?

[coral folio]

You can add Custom data to each tile

There

[burnt locust]

thanks a lot!

[heady onyx]

i made a little project demonstrating how to code such mechanics in godot
https://github.com/Griiimon/2D-Mining

[heady onyx]

concepts you should be familiar with to understand the code are: custom resources, tilemaps, ray/shapecasting, physics/collision objects basics and autoloads.
the only really advanced part is the automatic generation of the tile-set, which even took me quite a while to figure out.

[burnt locust]

i do understand those concept but i wanna have the basic machanics before i start stuff like terrain generation and such

thanks a lot!

[burnt locust]

should i use a custom string data sto identify the block?

[burnt locust]

your project helped me understand a lot of things so thanks for that!

also it showed me how much work ive got 😅

[heady onyx]

Just fyi: I added some features and will be adding more until I get bored.
The repo contains a version history now for an overview

[burnt locust]

could you tell me how you handle block checking? like checking what type of block it is? would you use a directory or a match statement

[heady onyx]

In what context do you need this? In my demo, unlike minecraft, I didn't hard code any block types and haven't seen a reason to do so, yet

[burnt locust]

im trying to figure out what to do when i have many types of blocks

[faint magnet]

I don't think you have to check what block it is, the information is inside the block. Like create a resource with the variables hitpoints, texture and a PackedScene with what it drops. when you hit the block with your player you call the takeDamage(dmg:float) on the block and the block "decides" when it is broken and what it drops. the player does not have to know. If you have multiple weapon types you could have takeDamage(dmg: float, weapon: Enum) and again the block decides how to react to different weapon types

if you have blocks that interact somehow with your player, like a "sludge" block that reduces movement speed you probably wanna put those blocks in a "sludge" group and check the group the player stands on on the player

Oh I am sorry, you cannot just put a script or resource to a tile AFAIK, I remembered, I tried this too once. So from what you already know it's reacting to the custom data and you where asking what type to use. integer but define the types as an enum, like here: https://www.youtube.com/watch?v=k9RsnbP4a0c