arnekeller/kit-programmieren-ws1920-final1
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This commit is contained in:
Arne Keller 2020-03-06 10:20:30 +01:00
parent 7c3f57caae
commit f5cb7e6f80
6 changed files with 71 additions and 39 deletions
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2
src/edu/kit/informatik/Terminal.java
View File

@ -100,6 +100,8 @@ public final class Terminal {
String line = IN.readLine();
if ("breakpoint".equals(line)) {
return readLine();
} else if (line != null && line.startsWith("#")) {
return readLine();
}
return line;
} catch (final IOException e) {

39
src/edu/kit/informatik/model/RailwayNetwork.java
View File

@ -234,7 +234,40 @@ public class RailwayNetwork {
}
/**
* Find a rail that *contains* (not touch) this position.
* Check whether a train can be placed at the specified position in the specified direction.
*
* @param position front position of the train
* @param direction initial direction of the train
* @return whether placement is possible
*/
public boolean allowsPlacementAt(Vector2D position, Vector2D direction) {
// check that the requested direction is equal to the direction of one the tracks
final Rail[] touchingRails = findTouchingRails(position);
if (touchingRails.length == 0) {
if (!findContainingRail(position)
.map(rail -> rail.allowsPlacement(position, direction))
.orElse(false)) {
return false; // containing rail is orthogonal to the requested direction
}
} else if (touchingRails.length == 1) {
if (!(touchingRails[0].allowsPlacement(position, direction)
|| touchingRails[0].allowsMovement(position, direction))) {
return false; // rail is orthogonal to the requested direction
}
} else if (!touchingRails[0].allowsPlacement(position, direction)
&& !touchingRails[1].allowsPlacement(position, direction)
&& !(touchingRails[0].allowsMovement(position, direction)
|| touchingRails[1].allowsMovement(position, direction))) {
// rail network does not allow this direction according to
// https://ilias.studium.kit.edu/goto.php?client_id=produktiv&target=frm_996924_139143_534378
return false;
}
return true;
}
/**
* Find a rail that contains this position.
*
* @param position the position to check
* @return the rail that contains the position
*/
@ -242,10 +275,6 @@ public class RailwayNetwork {
return rails.values().stream().filter(rail -> rail.contains(position)).findFirst();
}
private Optional<Rail> findRailPotentiallyContaining(Vector2D position) {
return rails.values().stream().filter(rail -> rail.canContain(position)).findFirst();
}
/**
* Find a rail that connects to or contains the first position and connects to or contains the second position.
*

54
src/edu/kit/informatik/model/Train.java
View File

@ -116,24 +116,7 @@ public final class Train {
positionList.addLast(position);
Vector2D rollingStockPosition = position;
// check that the requested direction is equal to the direction of one the tracks
final Rail[] touchingRails = railNetwork.findTouchingRails(position);
if (touchingRails.length == 0) {
if (!railNetwork.findContainingRail(position)
.map(rail -> rail.allowsPlacement(position, direction))
.orElse(false)) {
return false; // containing rail is orthogonal to the requested direction
}
} else if (touchingRails.length == 1) {
if (!(touchingRails[0].allowsPlacement(position, direction)
|| touchingRails[0].allowsMovement(position, direction))) {
return false; // rail is orthogonal to the requested direction
}
} else if (!touchingRails[0].allowsPlacement(position, direction)
&& !touchingRails[1].allowsPlacement(position, direction)
&& !(touchingRails[0].allowsMovement(position, direction)
|| touchingRails[1].allowsMovement(position, direction))) {
// rail network does not allow this direction according to
// https://ilias.studium.kit.edu/goto.php?client_id=produktiv&target=frm_996924_139143_534378
if (!railNetwork.allowsPlacementAt(position, direction)) {
return false;
}
final Set<Rail> occupiedRailsSet = new HashSet<>();
@ -252,11 +235,7 @@ public final class Train {
if (nextPosition != null) {
// not derailing
positions.addFirst(new Vector2D(nextPosition));
if (positions.size() >= 3 && nextPosition.subtract(positions.get(1)).normalized()
.equals(positions.get(1).subtract(positions.get(2)).normalized())
&& railNetwork.findTouchingRails(positions.get(1)).length == 0) {
positions.remove(1);
}
simplifyPositions(railNetwork);
occupiedRails.add(railNetwork.findRail(positions.get(1), nextPosition).get());
} // else: derailing
}
@ -282,17 +261,32 @@ public final class Train {
if (backPosition != null) {
// not derailing
positions.addLast(new Vector2D(backPosition));
if (positions.size() >= 3
&& backPosition.subtract(positions.get(positions.size() - 2)).normalized()
.equals(positions.get(positions.size() - 2)
.subtract(positions.get(positions.size() - 3)).normalized())
&& railNetwork.findTouchingRails(positions.get(positions.size() - 2)).length == 0) {
positions.remove(positions.size() - 2);
}
simplifyPositions(railNetwork);
occupiedRails.add(railNetwork.findRail(positions.get(positions.size() - 2), backPosition).get());
} // else: derailing
}
/**
* Simplify internal position data. Removes positions that are contained between two other positions.
*
* @param railNetwork railway network to use
*/
private void simplifyPositions(RailwayNetwork railNetwork) {
if (positions.size() >= 3
&& positions.getFirst().subtract(positions.get(1)).normalized()
.equals(positions.get(1).subtract(positions.get(2)).normalized())
&& railNetwork.findTouchingRails(positions.get(1)).length == 0) {
positions.remove(1);
}
if (positions.size() >= 3
&& positions.getLast().subtract(positions.get(positions.size() - 2)).normalized()
.equals(positions.get(positions.size() - 2)
.subtract(positions.get(positions.size() - 3)).normalized())
&& railNetwork.findTouchingRails(positions.get(positions.size() - 2)).length == 0) {
positions.remove(positions.size() - 2);
}
}
/**
* Remove this train from the rail network.
*/

2
src/edu/kit/informatik/model/TrainManager.java
View File

@ -159,7 +159,7 @@ public final class TrainManager {
throw new InvalidInputException("train is not valid");
} else if (train.isPlaced()) {
throw new InvalidInputException("train is already placed");
} else if (direction.getX() != 0 && direction.getY() != 0) {
} else if (!direction.isDirection()) {
throw new InvalidInputException("invalid train direction");
} else if (!railNetwork.isReadyForTrains()) {
throw new InvalidInputException("switches not set up");

10
src/edu/kit/informatik/model/Vector2D.java
View File

@ -63,6 +63,16 @@ public class Vector2D {
return Math.abs(this.x - other.x) + Math.abs(this.y - other.y);
}
/**
* Check whether this vector represents a valid direction. Is equivalent to checking whether it is parallel to
* the x-axis or the y-axis.
*
* @return whether this vector is a valid direction
*/
public boolean isDirection() {
return (x == 0 || y == 0) && (x != 0 || y != 0);
}
/**
* Check whether this vector is parallel to another vector. Note that this method only works for vectors that
* are parallel to one of the coordinate axes.

3
src/edu/kit/informatik/ui/CommandLine.java
View File

@ -34,9 +34,6 @@ public final class CommandLine {
if (input == null) {
break; // FIXME remove
}
if (input.startsWith("#")) {
continue; // FIXME remove
}
if (input.startsWith(EXIT)) {
if (input.length() != EXIT.length()) {