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WallMatcher.java
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WallMatcher.java
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/*
* Copyright 2011 Tyler Blair. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and contributors and should not be interpreted as representing official policies,
* either expressed or implied, of anybody else.
*/
package com.griefcraft.util.matchers;
import com.griefcraft.util.ProtectionFinder;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.block.BlockFace;
import java.util.EnumSet;
import java.util.Set;
/**
* Matches wall entities
* TODO fix buttons and levers
*/
public class WallMatcher implements ProtectionFinder.Matcher {
/**
* Blocks that can be attached to the wall and be protected.
* This assumes that the block is DESTROYED if the wall they are attached to is broken.
*/
public static final Set<Material> PROTECTABLES_WALL = EnumSet.of(Material.WALL_SIGN);
/**
* Those evil levers and buttons have all different bits for directions. Gah!
*/
public static final Set<Material> PROTECTABLES_LEVERS_ET_AL = EnumSet.of(Material.STONE_BUTTON, Material.LEVER);
/**
* Same as PROTECTABLE_WALL, except the facing direction is reversed,
* such as trap doors
*/
public static final Set<Material> PROTECTABLES_WALL_REVERSE = EnumSet.of(Material.TRAP_DOOR);
/**
* Possible faces around the base block that protections could be at
*/
public static final BlockFace[] POSSIBLE_FACES = new BlockFace[]{ BlockFace.NORTH, BlockFace.SOUTH, BlockFace.EAST, BlockFace.WEST };
public boolean matches(ProtectionFinder finder) {
// The block we are working on
Block block = finder.getBaseBlock();
// Match wall signs to the wall it's attached to
for (BlockFace blockFace : POSSIBLE_FACES) {
Block face; // the relative block
if ((face = block.getRelative(blockFace)) != null) {
// Try and match it
Block matched = tryMatchBlock(face, blockFace);
// We found something ..! Try and load the protection
if (matched != null) {
finder.addBlock(matched);
return true;
}
}
}
return false;
}
/**
* Try and match a wall block
*
* @param block
* @param matchingFace
* @return
*/
private Block tryMatchBlock(Block block, BlockFace matchingFace) {
byte direction = block.getData();
// Blocks such as wall signs
if (PROTECTABLES_WALL.contains(block.getType())) {
byte EAST = 0x05;
byte WEST = 0x04;
byte SOUTH = 0x03;
byte NORTH = 0x02;
if (matchingFace == BlockFace.EAST && (direction & EAST) == EAST) {
return block;
} else if (matchingFace == BlockFace.WEST && (direction & WEST) == WEST) {
return block;
} else if (matchingFace == BlockFace.SOUTH && (direction & SOUTH) == SOUTH) {
return block;
} else if (matchingFace == BlockFace.NORTH && (direction & NORTH) == NORTH) {
return block;
}
}
// Levers, buttons
else if (PROTECTABLES_LEVERS_ET_AL.contains(block.getType())) {
byte EAST = 0x4;
byte WEST = 0x3;
byte SOUTH = 0x1;
byte NORTH = 0x2;
if (matchingFace == BlockFace.EAST && (direction & EAST) == EAST) {
return block;
} else if (matchingFace == BlockFace.WEST && (direction & WEST) == WEST) {
return block;
} else if (matchingFace == BlockFace.SOUTH && (direction & SOUTH) == SOUTH) {
return block;
} else if (matchingFace == BlockFace.NORTH && (direction & NORTH) == NORTH) {
return block;
}
}
// Blocks such as trap doors
else if (PROTECTABLES_WALL_REVERSE.contains(block.getType())) {
byte EAST = 0x2;
byte WEST = 0x3;
byte SOUTH = 0x0;
byte NORTH = 0x1;
if (matchingFace == BlockFace.WEST && (direction & EAST) == EAST) {
return block;
} else if (matchingFace == BlockFace.EAST && (direction & WEST) == WEST) {
return block;
} else if (matchingFace == BlockFace.NORTH && (direction & SOUTH) == SOUTH) {
return block;
} else if (matchingFace == BlockFace.SOUTH && (direction & NORTH) == NORTH) {
return block;
}
}
return null;
}
}