Detect when cobblestone forms when lava touches water.

[jolly pier]

Hello, I would like to detect this in order to make an ore generator.

[spring bison]

Start by logging stuff and seeing what happens on what ticks, this most likely isn’t possible by conventional means so you would have to track the lava and water, not very effective. You could also detect when they break cobble and use that info to find where the cobble usually forms.

[jolly pier]

for example, I can detect when a cobblestone block is broken and check whether lava + water touches it. If so, I can check each tick for cobblestone creation, excluding whether the user lays it himself?