257 lines
9.8 KiB
Java
257 lines
9.8 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.computer.apis;
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import com.google.common.collect.ImmutableMap;
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import dan200.computercraft.ComputerCraft;
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import dan200.computercraft.api.lua.ILuaAPI;
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import dan200.computercraft.api.lua.ILuaContext;
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import dan200.computercraft.api.lua.LuaException;
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import dan200.computercraft.shared.computer.blocks.TileCommandComputer;
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import dan200.computercraft.shared.util.NBTUtil;
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import net.minecraft.block.Block;
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import net.minecraft.block.properties.IProperty;
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import net.minecraft.block.state.IBlockState;
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import net.minecraft.command.ICommand;
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import net.minecraft.command.ICommandManager;
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import net.minecraft.command.ICommandSender;
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import net.minecraft.nbt.NBTTagCompound;
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import net.minecraft.server.MinecraftServer;
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import net.minecraft.tileentity.TileEntity;
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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.Collections;
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import java.util.HashMap;
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import java.util.Map;
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import static dan200.computercraft.core.apis.ArgumentHelper.getInt;
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import static dan200.computercraft.core.apis.ArgumentHelper.getString;
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public class CommandAPI implements ILuaAPI
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{
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private TileCommandComputer m_computer;
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public CommandAPI( TileCommandComputer computer )
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{
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m_computer = computer;
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}
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// ILuaAPI implementation
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@Override
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public String[] getNames()
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{
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return new String[] { "commands" };
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}
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@Nonnull
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@Override
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public String[] getMethodNames()
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{
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return new String[] {
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"exec",
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"execAsync",
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"list",
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"getBlockPosition",
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"getBlockInfos",
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"getBlockInfo",
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};
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}
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private static Map<Object, Object> createOutput( String output )
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{
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return Collections.singletonMap( 1, output );
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}
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private Object[] doCommand( String command )
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{
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MinecraftServer server = m_computer.getWorld().getMinecraftServer();
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if( server == null || !server.isCommandBlockEnabled() )
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{
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return new Object[] { false, createOutput( "Command blocks disabled by server" ) };
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}
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ICommandManager commandManager = server.getCommandManager();
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TileCommandComputer.CommandSender sender = m_computer.getCommandSender();
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try
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{
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sender.clearOutput();
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int result = commandManager.executeCommand( sender, command );
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return new Object[] { result > 0, sender.copyOutput() };
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}
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catch( Throwable t )
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{
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if( ComputerCraft.logPeripheralErrors ) ComputerCraft.log.error( "Error running command.", t );
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return new Object[] { false, createOutput( "Java Exception Thrown: " + t ) };
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}
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}
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private static Object getBlockInfo( World world, BlockPos pos )
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{
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// Get the details of the block
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IBlockState state = world.getBlockState( pos );
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Block block = state.getBlock();
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Map<Object, Object> table = new HashMap<>( 3 );
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table.put( "name", Block.REGISTRY.getNameForObject( block ).toString() );
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table.put( "metadata", block.getMetaFromState( state ) );
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Map<Object, Object> stateTable = new HashMap<>();
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for( ImmutableMap.Entry<IProperty<?>, Comparable<?>> entry : state.getActualState( world, pos ).getProperties().entrySet() )
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{
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IProperty<?> property = entry.getKey();
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stateTable.put( property.getName(), getPropertyValue( property, entry.getValue() ) );
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}
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table.put( "state", stateTable );
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TileEntity tile = world.getTileEntity( pos );
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if( tile != null ) table.put( "nbt", NBTUtil.toLua( tile.writeToNBT( new NBTTagCompound() ) ) );
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return table;
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}
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@SuppressWarnings( { "unchecked", "rawtypes" } )
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private static Object getPropertyValue( IProperty property, Comparable value )
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{
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if( value instanceof String || value instanceof Number || value instanceof Boolean ) return value;
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return property.getName( value );
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}
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@Override
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public Object[] callMethod( @Nonnull ILuaContext context, int method, @Nonnull Object[] arguments ) throws LuaException, InterruptedException
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{
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switch( method )
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{
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case 0: // exec
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{
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final String command = getString( arguments, 0 );
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return context.executeMainThreadTask( () -> doCommand( command ) );
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}
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case 1: // execAsync
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{
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final String command = getString( arguments, 0 );
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long taskID = context.issueMainThreadTask( () -> doCommand( command ) );
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return new Object[] { taskID };
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}
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case 2: // list
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return context.executeMainThreadTask( () ->
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{
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int i = 1;
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Map<Object, Object> result = new HashMap<>();
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MinecraftServer server = m_computer.getWorld().getMinecraftServer();
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if( server != null )
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{
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ICommandManager commandManager = server.getCommandManager();
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ICommandSender commandSender = m_computer.getCommandSender();
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Map<String, ICommand> commands = commandManager.getCommands();
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for( Map.Entry<String, ICommand> entry : commands.entrySet() )
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{
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String name = entry.getKey();
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ICommand command = entry.getValue();
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try
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{
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if( command.checkPermission( server, commandSender ) )
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{
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result.put( i++, name );
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}
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}
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catch( Throwable t )
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{
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// Ignore buggy command
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if( ComputerCraft.logPeripheralErrors )
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{
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ComputerCraft.log.error( "Error checking permissions of command.", t );
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}
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}
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}
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}
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return new Object[] { result };
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} );
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case 3: // getBlockPosition
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{
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// This is probably safe to do on the Lua thread. Probably.
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BlockPos pos = m_computer.getPos();
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return new Object[] { pos.getX(), pos.getY(), pos.getZ() };
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}
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case 4:
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{
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// getBlockInfos
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final int minX = getInt( arguments, 0 );
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final int minY = getInt( arguments, 1 );
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final int minZ = getInt( arguments, 2 );
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final int maxX = getInt( arguments, 3 );
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final int maxY = getInt( arguments, 4 );
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final int maxZ = getInt( arguments, 5 );
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return context.executeMainThreadTask( () ->
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{
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// Get the details of the block
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World world = m_computer.getWorld();
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BlockPos min = new BlockPos(
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Math.min( minX, maxX ),
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Math.min( minY, maxY ),
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Math.min( minZ, maxZ )
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);
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BlockPos max = new BlockPos(
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Math.max( minX, maxX ),
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Math.max( minY, maxY ),
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Math.max( minZ, maxZ )
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);
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if( !world.isValid( min ) || !world.isValid( max ) )
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{
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throw new LuaException( "Co-ordinates out or range" );
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}
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if( (max.getX() - min.getX() + 1) * (max.getY() - min.getY() + 1) * (max.getZ() - min.getZ() + 1) > 4096 )
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{
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throw new LuaException( "Too many blocks" );
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}
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int i = 1;
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Map<Object, Object> results = new HashMap<>();
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for( int y = min.getY(); y <= max.getY(); y++ )
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{
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for( int z = min.getZ(); z <= max.getZ(); z++ )
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{
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for( int x = min.getX(); x <= max.getX(); x++ )
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{
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BlockPos pos = new BlockPos( x, y, z );
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results.put( i++, getBlockInfo( world, pos ) );
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}
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}
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}
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return new Object[] { results };
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} );
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}
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case 5:
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{
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// getBlockInfo
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final int x = getInt( arguments, 0 );
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final int y = getInt( arguments, 1 );
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final int z = getInt( arguments, 2 );
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return context.executeMainThreadTask( () ->
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{
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// Get the details of the block
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World world = m_computer.getWorld();
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BlockPos position = new BlockPos( x, y, z );
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if( world.isValid( position ) )
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{
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return new Object[] { getBlockInfo( world, position ) };
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}
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else
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{
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throw new LuaException( "co-ordinates out or range" );
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}
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} );
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}
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default:
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{
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return null;
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}
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}
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}
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}
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