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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 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 org.bukkit.Location;
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 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 ((above == Material.LADDER && in == Material.LADDER) || (in == Material.LADDER && below == Material.LADDER)) {
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 final class LadderClimber implements PathCallback {
boolean added = false;
@Override
public void run(final NPC npc, Block point, double radius) {
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) {
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) {
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 Location findValidLocation(Location location, int radius) {
Block base = location.getBlock();
if (canStandIn(base.getType()) && 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 (canStandIn(relative.getRelative(BlockFace.UP).getType()) && canStandIn(relative.getType())
&& canStandOn(base.getRelative(BlockFace.DOWN))) {
return relative.getLocation();
}
}
}
}
return location;
}
public static boolean isLiquid(Material... materials) {
return contains(materials, Material.WATER, Material.STATIONARY_WATER, Material.LAVA, Material.STATIONARY_LAVA);
}
public static boolean validPosition(Block in) {
return canStandIn(in.getType()) && canStandIn(in.getRelative(BlockFace.UP).getType())
&& canStandOn(in.getRelative(BlockFace.DOWN));
}
private static final Vector DOWN = new Vector(0, -1, 0);
private static final Set<Material> NOT_JUMPABLE = EnumSet.of(Material.FENCE, Material.IRON_FENCE,
Material.NETHER_FENCE, Material.COBBLE_WALL);
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.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.SOIL, Material.SNOW,
Material.DOUBLE_PLANT, 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);
}