private double calcDiagonalLength() {
double length = 0.0;
// Count the amount of zig-zagging curved tracks
final BlockFace[] toCheck;
if (this.instruction == BlockFace.SELF) {
toCheck =
new BlockFace[] {
FaceUtil.rotate(this.railDirection, -2), FaceUtil.rotate(this.railDirection, 2)
};
} else {
toCheck = new BlockFace[] {this.instruction};
}
for (BlockFace direction : toCheck) {
double tlength = 0.0;
// Find out the starting offset
final BlockFace[] dirs = FaceUtil.getFaces(direction);
BlockFace[] railDirs = FaceUtil.getFaces(this.railDirection);
BlockFace railDirection = this.railDirection;
Block b = this.railsBlock;
for (int i = 0; i < 20; i++) {
// Invert the direction
railDirection = railDirection.getOppositeFace();
railDirs[0] = railDirs[0].getOppositeFace();
railDirs[1] = railDirs[1].getOppositeFace();
// Obtain the new offset
final BlockFace offset;
if (LogicUtil.contains(railDirs[0], dirs)) {
offset = railDirs[0];
} else {
offset = railDirs[1];
}
// Check if the new block is the expected curve direction
b = b.getRelative(offset);
Rails rr = BlockUtil.getRails(b);
if (rr == null || rr.getDirection() != railDirection) {
break;
}
tlength += MathUtil.HALFROOTOFTWO;
}
// Update the length
if (tlength > length) {
length = tlength;
}
}
return length;
}
private double calcHorizontalLength() {
double length = 0.0;
// Count the amount of horizontal tracks
final BlockFace[] toCheck;
if (this.instruction == BlockFace.SELF) {
toCheck = FaceUtil.getFaces(this.railDirection);
} else {
toCheck = new BlockFace[] {this.instruction};
}
for (BlockFace face : toCheck) {
int tlength = 0;
// Get the type of rail required
BlockFace checkface = face;
if (checkface == BlockFace.NORTH) checkface = BlockFace.SOUTH;
if (checkface == BlockFace.EAST) checkface = BlockFace.WEST;
Block b = this.railsBlock;
for (int i = 0; i < 20; i++) {
// Next until invalid
b = b.getRelative(face);
Rails rr = BlockUtil.getRails(b);
if (rr == null || rr.getDirection() != checkface) {
break;
}
tlength++;
}
// Update the length
if (tlength > length) {
length = tlength;
}
}
return length;
}
@SuppressWarnings("rawtypes")
public static MinecartMember getAt(World world, ChunkCoordinates coord, boolean checkmoving) {
net.minecraft.server.Chunk chunk = WorldUtil.getChunk(world, coord.x >> 4, coord.z >> 4);
if (chunk != null) {
MinecartMember mm;
MinecartMember result = null;
for (List list : chunk.entitySlices) {
for (Object e : list) {
if (e instanceof MinecartMember) {
mm = (MinecartMember) e;
if (mm.getBlockX() != coord.x) continue;
if (mm.getBlockY() != coord.y) continue;
if (mm.getBlockZ() != coord.z) continue;
result = mm;
if (result.isHeadingTo(coord)) return result;
}
}
}
if (result == null && checkmoving) {
Block b = world.getWorld().getBlockAt(coord.x, coord.y, coord.z);
int id = b.getTypeId();
// get the two connected rails to check
if (BlockUtil.isRails(id)) {
BlockFace[] possible = FaceUtil.getFaces(BlockUtil.getRails(b).getDirection());
MinecartMember mm1 = getAt(Util.getRailsBlock(b.getRelative(possible[0])), false);
MinecartMember mm2 = getAt(Util.getRailsBlock(b.getRelative(possible[1])), false);
if (mm1 != null && mm2 != null && mm1.group == mm2.group) {
Location loc = b.getLocation();
return mm1.distance(loc) < mm2.distance(loc) ? mm1 : mm2;
} else if (isHeadingTo(mm1, coord)) {
return mm1;
} else if (isHeadingTo(mm2, coord)) {
return mm2;
} else {
return null;
}
} else if (Util.isPressurePlate(id)) {
// check all directions
MinecartMember mm1 = getAt(Util.getRailsBlock(b.getRelative(BlockFace.NORTH)), false);
MinecartMember mm2 = getAt(Util.getRailsBlock(b.getRelative(BlockFace.SOUTH)), false);
MinecartMember mm3 = getAt(Util.getRailsBlock(b.getRelative(BlockFace.EAST)), false);
MinecartMember mm4 = getAt(Util.getRailsBlock(b.getRelative(BlockFace.WEST)), false);
if (mm1 != null && mm2 != null && mm1.group == mm2.group) {
Location loc = b.getLocation();
return mm1.distance(loc) < mm2.distance(loc) ? mm1 : mm2;
} else if (mm3 != null && mm4 != null && mm3.group == mm4.group) {
Location loc = b.getLocation();
return mm3.distance(loc) < mm4.distance(loc) ? mm3 : mm4;
} else if (isHeadingTo(mm1, coord)) {
return mm1;
} else if (isHeadingTo(mm2, coord)) {
return mm2;
} else if (isHeadingTo(mm3, coord)) {
return mm3;
} else if (isHeadingTo(mm4, coord)) {
return mm4;
} else {
return null;
}
}
}
return result;
}
return null;
}
public Station(SignActionEvent info) {
this.delay = ParseUtil.parseTime(info.getLine(2));
this.nextDirection = Direction.parse(info.getLine(3));
this.centerCart = info.isCartSign() ? info.getMember() : info.getGroup().middle();
this.railsBlock = info.getRails();
// Vertical or horizontal rail logic
if (info.isVerticalRails()) {
this.railDirection = BlockFace.DOWN;
// Up, down or center based on redstone power
boolean up = info.isPowered(BlockFace.UP);
boolean down = info.isPowered(BlockFace.DOWN);
if (up && !down) {
this.instruction = BlockFace.UP;
} else if (!up && down) {
this.instruction = BlockFace.DOWN;
} else if (info.isPowered()) {
this.instruction = BlockFace.SELF;
} else {
this.instruction = null;
}
} else {
this.railDirection = info.getRailDirection();
if (FaceUtil.isSubCardinal(this.railDirection) && FaceUtil.isSubCardinal(info.getFacing())) {
// Sub-cardinal checks: Both directions have two possible powered sides
BlockFace[] faces = FaceUtil.getFaces(this.railDirection);
boolean pow1 = info.isPowered(faces[0]) || info.isPowered(faces[1].getOppositeFace());
boolean pow2 = info.isPowered(faces[1]) || info.isPowered(faces[0].getOppositeFace());
if (pow1 && !pow2) {
this.instruction = FaceUtil.combine(faces[0], faces[1].getOppositeFace());
} else if (!pow1 && pow2) {
this.instruction = FaceUtil.combine(faces[0].getOppositeFace(), faces[1]);
} else if (info.isPowered()) {
this.instruction = BlockFace.SELF;
} else {
this.instruction = null;
}
} else {
// Which directions to move, or brake?
if (this.railDirection == BlockFace.WEST) {
boolean west = info.isPowered(BlockFace.WEST);
boolean east = info.isPowered(BlockFace.EAST);
if (west && !east) {
this.instruction = BlockFace.WEST;
} else if (east && !west) {
this.instruction = BlockFace.EAST;
} else if (info.isPowered()) {
this.instruction = BlockFace.SELF;
} else {
this.instruction = null;
}
} else if (this.railDirection == BlockFace.SOUTH) {
boolean north = info.isPowered(BlockFace.NORTH);
boolean south = info.isPowered(BlockFace.SOUTH);
if (north && !south) {
this.instruction = BlockFace.NORTH;
} else if (south && !north) {
this.instruction = BlockFace.SOUTH;
} else if (info.isPowered()) {
this.instruction = BlockFace.SELF;
} else {
this.instruction = null;
}
} else {
this.length = 0.0;
this.instruction = null;
this.valid = false;
return;
}
}
}
// Get initial station length, delay and direction
double length = ParseUtil.parseDouble(info.getLine(1).substring(7), 0.0);
if (length == 0.0 && this.instruction != null) {
// Manually calculate the length
// Use the amount of straight blocks
if (info.isVerticalRails()) {
length = this.calcVerticalLength();
} else if (FaceUtil.isSubCardinal(this.railDirection)) {
length = this.calcDiagonalLength();
} else {
length = this.calcHorizontalLength();
}
if (length == 0.0) {
length++;
}
}
this.length = length;
this.valid = true;
}