NaturesAura/src/main/java/de/ellpeck/naturesaura/events/TerrainGenEvents.java

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package de.ellpeck.naturesaura.events;
import de.ellpeck.naturesaura.Helper;
import de.ellpeck.naturesaura.blocks.ModBlocks;
import de.ellpeck.naturesaura.blocks.tiles.TileEntityWoodStand;
import de.ellpeck.naturesaura.recipes.TreeRitualRecipe;
import net.minecraft.block.state.IBlockState;
import net.minecraft.item.ItemStack;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;
import net.minecraftforge.event.terraingen.SaplingGrowTreeEvent;
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
import java.util.*;
public class TerrainGenEvents {
@SubscribeEvent
public void onTreeGrow(SaplingGrowTreeEvent event) {
World world = event.getWorld();
BlockPos pos = event.getPos();
if (!world.isRemote) {
if (Helper.checkMultiblock(world, pos, TileEntityWoodStand.GOLD_POWDER_POSITIONS, ModBlocks.GOLD_POWDER.getDefaultState(), true)) {
List<TileEntity> tileEntities = Helper.getTileEntitiesInArea(world, pos, 5);
List<TileEntityWoodStand> stands = new ArrayList<>();
List<ItemStack> usableItems = new ArrayList<>();
for (TileEntity tile : tileEntities) {
if (tile instanceof TileEntityWoodStand) {
TileEntityWoodStand stand = (TileEntityWoodStand) tile;
if (!stand.stack.isEmpty()) {
usableItems.add(stand.stack);
stands.add(stand);
}
}
}
IBlockState sapling = world.getBlockState(pos);
ItemStack saplingStack = sapling.getBlock().getItem(world, pos, sapling);
if (!saplingStack.isEmpty()) {
for (TreeRitualRecipe recipe : TreeRitualRecipe.RECIPES) {
if (recipe.matchesItems(saplingStack, usableItems)) {
Map<TileEntityWoodStand, ItemStack> actuallyInvolved = new HashMap<>();
List<ItemStack> stillRequired = new ArrayList<>(Arrays.asList(recipe.items));
TileEntityWoodStand toPick = null;
for (TileEntityWoodStand stand : stands) {
int index = Helper.getItemIndex(stillRequired, stand.stack);
if (index >= 0) {
actuallyInvolved.put(stand, stand.stack);
stillRequired.remove(index);
if (toPick == null) {
toPick = stand;
}
}
}
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if (stillRequired.isEmpty()) {
toPick.setRitual(pos, recipe, actuallyInvolved);
break;
}
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}
}
}
}
}
}
}