/
MinecraftBlockExaminer.java
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/
MinecraftBlockExaminer.java
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package net.citizensnpcs.api.astar.pathfinder;
import java.util.EnumSet;
import java.util.ListIterator;
import java.util.Set;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.block.BlockFace;
import org.bukkit.util.Vector;
import com.google.common.collect.Lists;
import net.citizensnpcs.api.ai.event.CancelReason;
import net.citizensnpcs.api.ai.event.NavigatorCallback;
import net.citizensnpcs.api.astar.pathfinder.PathPoint.PathCallback;
import net.citizensnpcs.api.npc.NPC;
import net.citizensnpcs.api.util.SpigotUtil;
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 == WEB || in == WEB)
return 1F;
if (below == Material.SOUL_SAND || below == Material.ICE)
return 1F;
if (isLiquid(above, below, in))
return 0.5F;
return 0F; // TODO: add light level-specific costs?
}
private boolean isClimbable(Material mat) {
return mat == Material.LADDER || mat == Material.VINE;
}
@Override
public PassableState 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 PassableState.UNPASSABLE;
}
if ((isClimbable(above) && isClimbable(in)) || (isClimbable(in) && isClimbable(below))) {
point.addCallback(new LadderClimber());
} else if (!canStandIn(above) || !canStandIn(in)) {
return PassableState.UNPASSABLE;
}
if (!canJumpOn(below)) {
if (point.getParentPoint() == null) {
return PassableState.UNPASSABLE;
}
Vector parentPos = point.getParentPoint().getVector();
if ((parentPos.getX() != pos.getX() || parentPos.getZ() != pos.getZ())
&& pos.clone().subtract(point.getParentPoint().getVector()).getY() == 1) {
return PassableState.UNPASSABLE;
}
}
return PassableState.PASSABLE;
}
private class LadderClimber implements PathCallback {
boolean added = false;
ListIterator<Block> current;
@Override
public void run(final NPC npc, Block point, ListIterator<Block> path) {
current = path;
if (added || npc.data().<Boolean> get("running-ladder", false)) {
added = true;
return;
}
Runnable callback = new Runnable() {
Location dummy = new Location(null, 0, 0, 0);
@Override
public void run() {
if (npc.getEntity().getLocation(dummy).getBlock().getType() == Material.LADDER
&& current.next().getY() > current.previous().getY()) {
npc.getEntity().setVelocity(npc.getEntity().getVelocity().setY(0.3));
}
}
};
npc.getNavigator().getLocalParameters().addSingleUseCallback(new NavigatorCallback() {
@Override
public void onCompletion(CancelReason cancelReason) {
npc.data().set("running-ladder", false);
}
});
npc.getNavigator().getLocalParameters().addRunCallback(callback);
added = true;
}
}
private static boolean canJumpOn(Material mat) {
return !NOT_JUMPABLE.contains(mat);
}
public static boolean canStandIn(Material... mat) {
boolean passable = true;
for (Material m : mat) {
passable &= !m.isSolid();
}
return passable;
}
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) && mat.isSolid();
}
public static Location findValidLocation(Location location, int radius) {
Block base = location.getBlock();
if (canStandOn(base.getRelative(BlockFace.DOWN)))
return location;
for (int y = 0; y <= radius; y++) {
for (int x = -radius; x <= radius; x++) {
for (int z = -radius; z <= radius; z++) {
Block relative = base.getRelative(x, y, z);
if (canStandOn(base.getRelative(BlockFace.DOWN))) {
return relative.getLocation();
}
}
}
}
return location;
}
public static Location findValidLocation(Location location, int radius, int yradius) {
Block base = location.getBlock();
if (canStandOn(base.getRelative(BlockFace.DOWN)))
return location;
for (int y = -yradius; y <= yradius; y++) {
for (int x = -radius; x <= radius; x++) {
for (int z = -radius; z <= radius; z++) {
Block relative = base.getRelative(x, y, z);
if (canStandOn(base.getRelative(BlockFace.DOWN))) {
return relative.getLocation();
}
}
}
}
return location;
}
public static boolean isDoor(Material in) {
return DOORS.contains(in);
}
public static boolean isLiquid(Material... materials) {
for (Material mat : materials) {
if (LIQUIDS.contains(mat)) {
return true;
}
}
return false;
}
public static boolean validPosition(Block in) {
return canStandIn(in.getType()) && canStandIn(in.getRelative(BlockFace.UP).getType())
&& canStandOn(in.getRelative(BlockFace.DOWN).getType());
}
private static final Set<Material> DOORS = EnumSet.of(Material.SPRUCE_DOOR, Material.BIRCH_DOOR,
Material.JUNGLE_DOOR, Material.ACACIA_DOOR, Material.DARK_OAK_DOOR);
private static final Vector DOWN = new Vector(0, -1, 0);
private static final Set<Material> LIQUIDS = EnumSet.of(Material.WATER, Material.LAVA);
private static final Set<Material> NOT_JUMPABLE = EnumSet.of(Material.SPRUCE_FENCE, Material.BIRCH_FENCE,
Material.JUNGLE_FENCE, Material.ACACIA_FENCE, Material.DARK_OAK_FENCE);
private static final Set<Material> UNWALKABLE = EnumSet.of(Material.AIR, Material.LAVA, Material.CACTUS);
private static final Vector UP = new Vector(0, 1, 0);
private static Material WEB = SpigotUtil.isUsing1_13API() ? Material.COBWEB : Material.valueOf("WEB");
static {
if (!SpigotUtil.isUsing1_13API()) {
LIQUIDS.add(Material.valueOf("STATIONARY_LAVA"));
LIQUIDS.add(Material.valueOf("STATIONARY_WATER"));
UNWALKABLE.add(Material.valueOf("STATIONARY_LAVA"));
NOT_JUMPABLE.addAll(Lists.newArrayList(Material.valueOf("FENCE"), Material.valueOf("IRON_FENCE"),
Material.valueOf("NETHER_FENCE"), Material.valueOf("COBBLE_WALL")));
DOORS.addAll(Lists.newArrayList(Material.valueOf("IRON_DOOR_BLOCK"), Material.valueOf("WOODEN_DOOR")));
} else {
UNWALKABLE.add(Material.valueOf("CAMPFIRE"));
NOT_JUMPABLE.addAll(Lists.newArrayList(Material.valueOf("OAK_FENCE"),
Material.valueOf("NETHER_BRICK_FENCE"), Material.valueOf("COBBLESTONE_WALL")));
DOORS.addAll(Lists.newArrayList(Material.valueOf("IRON_DOOR"), Material.valueOf("OAK_DOOR")));
}
}
}