Help with Modding a Multiblock Structure

[EmeraldJelly]

Hi so im using forge version 1.12.2.

 

Trying to work on a pretty interesting mod with good knowledge of java and how it works, just not the Forge API and i have trouble sometimes finding where to properly learn the entire API and how it works, there should be a forge school or something.

 

Anyways, i'm trying to create a Multiblock structure. Basically i'm making a sacrifice bowl, that needs to be surrounded by 3 1x1 shrine blocks 2 blocks spaced out from each other. I want the shrines to spawn particles to move toward the bowl then eventually transforming the contents of the bowl (just a container with a inventory of 4 **3 ingredients, 1 output**) into an item and ejecting it out of the inventory as an item spawn.

 

I'm not sure if i need to use multiblocks to do this, but it does require multiple blocks to work (all be it not connected). It's more of a crafting altar i suppose, similar to thaumcraft if that is a good reference point. Any assistance would be much appreciated, thanks!

[SerpentDagger]

The way I'd go about doing this would be to just check to see if the shrines are there whenever anything important is happening, else said important thing doesn't happen.

[EmeraldJelly]

How would I do that , not sure how to Check in a radius

[SerpentDagger]

Unfortunately there's no method you can use to scan the nearby area for blocks, but you can get the IBlockState at a given BlockPos with World#getBlockState, and use nested for loops to check all positions within a cube. If you want to check in a sphere, you could use the cube method but then continue whenever the BlockPos is further than the radius away.

[ModMCdl]

1 hour ago, EmeraldJelly said:

How would I do that , not sure how to Check in a radius

Another method to use is BlockPattern

private BlockPattern pattern = FactoryBlockPattern.start().aisle(
			"010", 
  			"020",  
  			"030")
			.where('1', BlockWorldState.hasState(BlockStateMatcher.forBlock(ModBlocks.Block1)))
			.where('2', BlockWorldState.hasState(BlockStateMatcher.forBlock(ModBlocks.Block2)))
			.where('3', BlockWorldState.hasState(BlockStateMatcher.forBlock(ModBlocks.Block3)))
			.where('0', BlockWorldState.hasState(BlockStateMatcher.ANY)).build();

It searches in a variable radius around your center block (in this case, Block2) to find other blocks defined in your pattern.

Edited September 18, 2019 by ModMCdl