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;
}
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;
}