69 lines
2.3 KiB
Java
69 lines
2.3 KiB
Java
/*
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* This file is part of ComputerCraft - http://www.computercraft.info
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* Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
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* Send enquiries to dratcliffe@gmail.com
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*/
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package dan200.computercraft.shared;
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import com.google.common.base.Preconditions;
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import dan200.computercraft.ComputerCraft;
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import dan200.computercraft.api.redstone.IBundledRedstoneProvider;
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import dan200.computercraft.shared.common.DefaultBundledRedstoneProvider;
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import net.minecraft.util.EnumFacing;
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import net.minecraft.util.math.BlockPos;
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import net.minecraft.world.World;
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import javax.annotation.Nonnull;
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import java.util.LinkedHashSet;
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import java.util.Set;
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public final class BundledRedstone
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{
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private static final Set<IBundledRedstoneProvider> providers = new LinkedHashSet<>();
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private BundledRedstone() {}
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public static synchronized void register( @Nonnull IBundledRedstoneProvider provider )
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{
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Preconditions.checkNotNull( provider, "provider cannot be null" );
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providers.add( provider );
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}
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public static int getDefaultOutput( @Nonnull World world, @Nonnull BlockPos pos, @Nonnull EnumFacing side )
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{
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return World.isValid( pos ) ? DefaultBundledRedstoneProvider.getDefaultBundledRedstoneOutput( world, pos, side ) : -1;
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}
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private static int getUnmaskedOutput( World world, BlockPos pos, EnumFacing side )
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{
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if( !World.isValid( pos ) ) return -1;
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// Try the providers in order:
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int combinedSignal = -1;
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for( IBundledRedstoneProvider bundledRedstoneProvider : providers )
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{
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try
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{
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int signal = bundledRedstoneProvider.getBundledRedstoneOutput( world, pos, side );
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if( signal >= 0 )
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{
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combinedSignal = combinedSignal < 0 ? signal & 0xffff : combinedSignal | (signal & 0xffff);
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}
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}
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catch( Exception e )
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{
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ComputerCraft.log.error( "Bundled redstone provider " + bundledRedstoneProvider + " errored.", e );
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}
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}
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return combinedSignal;
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}
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public static int getOutput( World world, BlockPos pos, EnumFacing side )
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{
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int signal = getUnmaskedOutput( world, pos, side );
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return signal >= 0 ? signal : 0;
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}
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}
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