minecraft-src/net/minecraft/world/level/block/BaseFireBlock.java

package net.minecraft.world.level.block;

import com.mojang.serialization.MapCodec;
import java.util.Optional;
import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.core.particles.ParticleTypes;
import net.minecraft.sounds.SoundEvents;
import net.minecraft.sounds.SoundSource;
import net.minecraft.util.RandomSource;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.item.context.BlockPlaceContext;
import net.minecraft.world.level.BlockGetter;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.block.state.BlockBehaviour;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.portal.PortalShape;
import net.minecraft.world.phys.shapes.CollisionContext;
import net.minecraft.world.phys.shapes.VoxelShape;

public abstract class BaseFireBlock extends Block {
	private static final int SECONDS_ON_FIRE = 8;
	private final float fireDamage;
	protected static final float AABB_OFFSET = 1.0F;
	protected static final VoxelShape DOWN_AABB = Block.box(0.0, 0.0, 0.0, 16.0, 1.0, 16.0);

	public BaseFireBlock(BlockBehaviour.Properties properties, float fireDamage) {
		super(properties);
		this.fireDamage = fireDamage;
	}

	@Override
	protected abstract MapCodec<? extends BaseFireBlock> codec();

	@Override
	public BlockState getStateForPlacement(BlockPlaceContext context) {
		return getState(context.getLevel(), context.getClickedPos());
	}

	public static BlockState getState(BlockGetter reader, BlockPos pos) {
		BlockPos blockPos = pos.below();
		BlockState blockState = reader.getBlockState(blockPos);
		return SoulFireBlock.canSurviveOnBlock(blockState) ? Blocks.SOUL_FIRE.defaultBlockState() : ((FireBlock)Blocks.FIRE).getStateForPlacement(reader, pos);
	}

	@Override
	protected VoxelShape getShape(BlockState state, BlockGetter level, BlockPos pos, CollisionContext context) {
		return DOWN_AABB;
	}

	@Override
	public void animateTick(BlockState state, Level level, BlockPos pos, RandomSource random) {
		if (random.nextInt(24) == 0) {
			level.playLocalSound(
				pos.getX() + 0.5,
				pos.getY() + 0.5,
				pos.getZ() + 0.5,
				SoundEvents.FIRE_AMBIENT,
				SoundSource.BLOCKS,
				1.0F + random.nextFloat(),
				random.nextFloat() * 0.7F + 0.3F,
				false
			);
		}

		BlockPos blockPos = pos.below();
		BlockState blockState = level.getBlockState(blockPos);
		if (!this.canBurn(blockState) && !blockState.isFaceSturdy(level, blockPos, Direction.UP)) {
			if (this.canBurn(level.getBlockState(pos.west()))) {
				for (int i = 0; i < 2; i++) {
					double d = pos.getX() + random.nextDouble() * 0.1F;
					double e = pos.getY() + random.nextDouble();
					double f = pos.getZ() + random.nextDouble();
					level.addParticle(ParticleTypes.LARGE_SMOKE, d, e, f, 0.0, 0.0, 0.0);
				}
			}

			if (this.canBurn(level.getBlockState(pos.east()))) {
				for (int i = 0; i < 2; i++) {
					double d = pos.getX() + 1 - random.nextDouble() * 0.1F;
					double e = pos.getY() + random.nextDouble();
					double f = pos.getZ() + random.nextDouble();
					level.addParticle(ParticleTypes.LARGE_SMOKE, d, e, f, 0.0, 0.0, 0.0);
				}
			}

			if (this.canBurn(level.getBlockState(pos.north()))) {
				for (int i = 0; i < 2; i++) {
					double d = pos.getX() + random.nextDouble();
					double e = pos.getY() + random.nextDouble();
					double f = pos.getZ() + random.nextDouble() * 0.1F;
					level.addParticle(ParticleTypes.LARGE_SMOKE, d, e, f, 0.0, 0.0, 0.0);
				}
			}

			if (this.canBurn(level.getBlockState(pos.south()))) {
				for (int i = 0; i < 2; i++) {
					double d = pos.getX() + random.nextDouble();
					double e = pos.getY() + random.nextDouble();
					double f = pos.getZ() + 1 - random.nextDouble() * 0.1F;
					level.addParticle(ParticleTypes.LARGE_SMOKE, d, e, f, 0.0, 0.0, 0.0);
				}
			}

			if (this.canBurn(level.getBlockState(pos.above()))) {
				for (int i = 0; i < 2; i++) {
					double d = pos.getX() + random.nextDouble();
					double e = pos.getY() + 1 - random.nextDouble() * 0.1F;
					double f = pos.getZ() + random.nextDouble();
					level.addParticle(ParticleTypes.LARGE_SMOKE, d, e, f, 0.0, 0.0, 0.0);
				}
			}
		} else {
			for (int i = 0; i < 3; i++) {
				double d = pos.getX() + random.nextDouble();
				double e = pos.getY() + random.nextDouble() * 0.5 + 0.5;
				double f = pos.getZ() + random.nextDouble();
				level.addParticle(ParticleTypes.LARGE_SMOKE, d, e, f, 0.0, 0.0, 0.0);
			}
		}
	}

	protected abstract boolean canBurn(BlockState state);

	@Override
	protected void entityInside(BlockState state, Level level, BlockPos pos, Entity entity) {
		if (!entity.fireImmune()) {
			entity.setRemainingFireTicks(entity.getRemainingFireTicks() + 1);
			if (entity.getRemainingFireTicks() == 0) {
				entity.igniteForSeconds(8.0F);
			}
		}

		entity.hurt(level.damageSources().inFire(), this.fireDamage);
		super.entityInside(state, level, pos, entity);
	}

	@Override
	protected void onPlace(BlockState state, Level level, BlockPos pos, BlockState oldState, boolean movedByPiston) {
		if (!oldState.is(state.getBlock())) {
			if (inPortalDimension(level)) {
				Optional<PortalShape> optional = PortalShape.findEmptyPortalShape(level, pos, Direction.Axis.X);
				if (optional.isPresent()) {
					((PortalShape)optional.get()).createPortalBlocks();
					return;
				}
			}

			if (!state.canSurvive(level, pos)) {
				level.removeBlock(pos, false);
			}
		}
	}

	private static boolean inPortalDimension(Level level) {
		return level.dimension() == Level.OVERWORLD || level.dimension() == Level.NETHER;
	}

	@Override
	protected void spawnDestroyParticles(Level level, Player player, BlockPos pos, BlockState state) {
	}

	@Override
	public BlockState playerWillDestroy(Level level, BlockPos pos, BlockState state, Player player) {
		if (!level.isClientSide()) {
			level.levelEvent(null, 1009, pos, 0);
		}

		return super.playerWillDestroy(level, pos, state, player);
	}

	public static boolean canBePlacedAt(Level level, BlockPos pos, Direction direction) {
		BlockState blockState = level.getBlockState(pos);
		return !blockState.isAir() ? false : getState(level, pos).canSurvive(level, pos) || isPortal(level, pos, direction);
	}

	private static boolean isPortal(Level level, BlockPos pos, Direction direction) {
		if (!inPortalDimension(level)) {
			return false;
		} else {
			BlockPos.MutableBlockPos mutableBlockPos = pos.mutable();
			boolean bl = false;

			for (Direction direction2 : Direction.values()) {
				if (level.getBlockState(mutableBlockPos.set(pos).move(direction2)).is(Blocks.OBSIDIAN)) {
					bl = true;
					break;
				}
			}

			if (!bl) {
				return false;
			} else {
				Direction.Axis axis = direction.getAxis().isHorizontal()
					? direction.getCounterClockWise().getAxis()
					: Direction.Plane.HORIZONTAL.getRandomAxis(level.random);
				return PortalShape.findEmptyPortalShape(level, pos, axis).isPresent();
			}
		}
	}
}