org.bukkit.util.Vector#subtract ( )源码实例Demo

private void setDirectionalBlockFace(Location b, BlockData bd, Player p) {
    if (bd instanceof Directional) {
        Vector dir = new Vector(b.getX() + 0.5d, b.getY() + 0.5d, b.getZ() + 0.5d);
        dir.subtract(p.getEyeLocation().toVector());
        double absX = Math.abs(dir.getX());
        double absY = Math.abs(dir.getY());
        double absZ = Math.abs(dir.getZ());
        if (((Directional) bd).getFaces().contains(BlockFace.UP) && ((Directional) bd).getFaces().contains(BlockFace.DOWN)) {
            if (absX >= absY && absX >= absZ) {
                ((Directional) bd).setFacing(dir.getX() > 0 ? BlockFace.WEST : BlockFace.EAST);
            } else if (absY >= absX && absY >= absZ) {
                ((Directional) bd).setFacing(dir.getY() > 0 ? BlockFace.DOWN : BlockFace.UP);
            } else {
                ((Directional) bd).setFacing(dir.getZ() > 0 ? BlockFace.NORTH : BlockFace.SOUTH);
            }
        } else {
            if (absX >= absZ) {
                ((Directional) bd).setFacing(dir.getX() > 0 ? BlockFace.WEST : BlockFace.EAST);
            } else {
                ((Directional) bd).setFacing(dir.getZ() > 0 ? BlockFace.NORTH : BlockFace.SOUTH);
            }
        }
    }
}
 

public boolean overlaps(AABB other) {		
	if (other == null) {
		return false;
	}
	
	//this.showDebugBlocks(ItemManager.getId(Material.DIAMOND_BLOCK), ItemManager.getId(Material.DIAMOND_BLOCK));
	//other.showDebugBlocks(ItemManager.getId(Material.GOLD_BLOCK), ItemManager.getId(Material.GOLD_BLOCK));

	Vector t = new Vector();
	t.copy(other.getPosition());
	t.subtract(getPosition());
			
	return (Math.abs(t.getX()) < (getExtents().getX() + other.getExtents().getX()) &&
			Math.abs(t.getY()) < (getExtents().getY() + other.getExtents().getY()) &&
			Math.abs(t.getZ()) < (getExtents().getZ() + other.getExtents().getZ()));
}
 

private Vector getVector(Location fromLoc, Location toLoc) {
    if(fromLoc == null || toLoc == null) return null;

    Vector fromVec = fromLoc.toVector();
    Vector toVec = toLoc.toVector();

    Vector subtract = fromVec.subtract(toVec);
    Vector normal = subtract.normalize();

    NoEntryHandler handler = getNoEntryHandler();
    double strength = handler.getNoEntryKnockbackStrength();
    Vector multiply = normal.multiply(strength);

    return makeFinite(multiply);
}
 

@EventHandler(priority = EventPriority.LOW, ignoreCancelled = true)
public void onBlockBreak(BlockBreakEvent event) {
    if (event == null || !terraformEnabled) {
        return;
    }
    Block block = event.getBlock();
    Player player = event.getPlayer();
    if (!plugin.getWorldManager().isSkyNether(block.getWorld()) || !plugin.getWorldManager().isSkyNether(player.getWorld())) {
        return; // Bail out, not our problem
    }
    if (player.getGameMode() != GameMode.SURVIVAL) {
        return;
    }
    if (!plugin.playerIsOnIsland(player)) {
        return;
    }
    if (!terraFormMap.containsKey(block.getType())) {
        return; // Not a block we terra-form on.
    }
    // TODO: 10/07/2016 - R4zorax: Handle dual-wielding (would break 1.8 compatibility)
    ItemStack tool = event.getPlayer().getItemInHand();
    if (event.getBlock().getDrops(tool).isEmpty()) {
        return; // Only terra-form when stuff is mined correctly
    }
    double toolWeight = getToolWeight(tool);
    Location playerLocation = player.getEyeLocation();
    Location blockLocation = LocationUtil.centerInBlock(block.getLocation());
    Vector v = new Vector(blockLocation.getX(), blockLocation.getY(), blockLocation.getZ());
    v.subtract(new Vector(playerLocation.getX(), playerLocation.getY(), playerLocation.getZ()));
    v.normalize();
    // Disable spawning above the player... enabling the player to clear a region
    if (playerLocation.getPitch() >= minPitch && playerLocation.getPitch() <= maxPitch) {
        ProtectedCuboidRegion islandRegion = WorldGuardHandler.getIslandRegion(playerLocation);
        List<Material> yield = getYield(block.getType(), toolWeight);
        for (Material mat : yield) {
            spawnBlock(mat, blockLocation, v, islandRegion);
        }
    }
}