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MinecraftBlockExaminer.java
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MinecraftBlockExaminer.java
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package net.citizensnpcs.api.astar.pathfinder;
import java.util.Arrays;
import java.util.EnumSet;
import java.util.Set;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.block.BlockFace;
import org.bukkit.util.Vector;
public class MinecraftBlockExaminer implements BlockExaminer {
@Override
public float getCost(BlockSource source, PathPoint point) {
Vector pos = point.getVector();
Material above = source.getMaterialAt(pos.clone().add(UP));
Material below = source.getMaterialAt(pos.clone().add(DOWN));
Material in = source.getMaterialAt(pos);
if (above == Material.WEB || in == Material.WEB)
return 1F;
if (below == Material.SOUL_SAND || below == Material.ICE)
return 1F;
if (isLiquid(above, below, in))
return 0.5F;
return 0.5F; // TODO: add light level-specific costs
}
@Override
public boolean isPassable(BlockSource source, PathPoint point) {
Vector pos = point.getVector();
Material above = source.getMaterialAt(pos.clone().add(UP));
Material below = source.getMaterialAt(pos.clone().add(DOWN));
Material in = source.getMaterialAt(pos);
if (!below.isBlock() || !canStandOn(below)) {
return false;
}
if (!canStandIn(above) || !canStandIn(in)) {
return false;
}
return true;
}
public static boolean canStandIn(Material... mat) {
return PASSABLE.containsAll(Arrays.asList(mat));
}
public static boolean canStandOn(Block block) {
Block up = block.getRelative(BlockFace.UP);
return canStandOn(block.getType()) && canStandIn(up.getType())
&& canStandIn(up.getRelative(BlockFace.UP).getType());
}
public static boolean canStandOn(Material mat) {
return !UNWALKABLE.contains(mat) && !PASSABLE.contains(mat);
}
private static boolean contains(Material[] search, Material... find) {
for (Material haystack : search) {
for (Material needle : find) {
if (haystack == needle)
return true;
}
}
return false;
}
public static boolean isLiquid(Material... materials) {
return contains(materials, Material.WATER, Material.STATIONARY_WATER, Material.LAVA, Material.STATIONARY_LAVA);
}
private static final Vector DOWN = new Vector(0, -1, 0);
private static final Set<Material> PASSABLE = EnumSet.of(Material.AIR, Material.DEAD_BUSH, Material.DETECTOR_RAIL,
Material.DIODE, Material.DIODE_BLOCK_OFF, Material.DIODE_BLOCK_ON, Material.FENCE_GATE,
Material.ITEM_FRAME, Material.LADDER, Material.LEVER, Material.LONG_GRASS, Material.CARPET,
Material.MELON_STEM, Material.NETHER_FENCE, Material.PUMPKIN_STEM, Material.POWERED_RAIL, Material.RAILS,
Material.RED_ROSE, Material.RED_MUSHROOM, Material.REDSTONE, Material.REDSTONE_TORCH_OFF,
Material.REDSTONE_TORCH_OFF, Material.REDSTONE_WIRE, Material.SIGN, Material.SIGN_POST, Material.SNOW,
Material.STRING, Material.STONE_BUTTON, Material.SUGAR_CANE_BLOCK, Material.TRIPWIRE, Material.VINE,
Material.WALL_SIGN, Material.WHEAT, Material.WATER, Material.WEB, Material.WOOD_BUTTON,
Material.WOODEN_DOOR, Material.STATIONARY_WATER);
private static final Set<Material> UNWALKABLE = EnumSet.of(Material.AIR, Material.LAVA, Material.STATIONARY_LAVA,
Material.CACTUS);
private static final Vector UP = new Vector(0, 1, 0);
}