/**
* Changes the position of an entity on the map, by specifying the coordinates of its origin
* point.
*
* @param entity an entity
* @param x x coordinate of the origin point
* @param y y coordinate of the origin point
* @throws MapException if the coordinates are not multiple of 8
*/
public void setEntityPosition(MapEntity entity, int x, int y) throws MapException {
entity.setPositionInMap(x, y);
entity.updateImageDescription();
setChanged();
notifyObservers();
}
/**
* Changes the position of a group of entities.
*
* @param entities the entities to move
* @param dx number of pixels to move on x
* @param dy number of pixels to move on y
* @throws MapException if the coordinates of an entity are not multiple of 8
*/
public void moveEntities(List<MapEntity> entities, int dx, int dy) throws MapException {
for (MapEntity entity : entities) {
entity.move(dx, dy);
}
setChanged();
notifyObservers();
}
/**
* Returns the highest layer where a specified rectangle overlaps an existing entity.
*
* @param rectangle a rectangle
* @return the highest layer where an entity exists in this rectangle, or Layer.LOW if there is
* nothing here
*/
public Layer getLayerInRectangle(Rectangle rectangle) {
Layer[] layers = {Layer.HIGH, Layer.INTERMEDIATE, Layer.LOW};
for (Layer layer : layers) {
for (MapEntity entity : allEntities[layer.getId()]) {
if (rectangle.intersects(entity.getPositionInMap())) {
return layer;
}
}
}
return Layer.LOW;
}
/**
* Changes the direction of an entity.
*
* @param entity the entity to change the direction
* @param direction the new direction
* @throws MapException if this entity has no direction
*/
public void setEntityDirection(MapEntity entity, int direction) throws MapException {
int oldDirection = entity.getDirection();
if (direction != oldDirection) {
entity.setDirection(direction);
entity.updateImageDescription();
setChanged();
notifyObservers();
}
}
/**
* Returns the first entity under a point of the map, in the specified layer.
*
* @param layer the layer
* @param x x of the point
* @param y y of the point
* @return the entity found, or null if there is no entity here
*/
public MapEntity getEntityAt(Layer layer, int x, int y) {
MapEntities entities = allEntities[layer.getId()];
ListIterator<MapEntity> iterator = entities.listIterator(entities.size());
while (iterator.hasPrevious()) {
MapEntity entity = iterator.previous();
if (entity.containsPoint(x, y)) {
return entity;
}
}
return null;
}
/**
* Changes the layer of an entity. You should call this method instead of calling directly
* MapEntity.setLayer(), because the entity of the 3 layers are stored in 3 different structures.
* If the entity is not known by the map (yet), this method just calls MapEntity.setLayer().
*
* @param entity the entity to change the layer
* @param layer the new layer
*/
public void setEntityLayer(MapEntity entity, Layer layer) {
Layer oldLayer = entity.getLayer();
if (layer != oldLayer) {
entity.setLayer(layer);
if (allEntities[oldLayer.getId()].remove(entity)) {
allEntities[layer.getId()].add(entity);
}
setChanged();
notifyObservers();
}
}
/**
* Changes the position of an entity on the map, by specifying two points. The entity is resized
* (i.e. repeatX and repeatY are updated) so that it fits exactly in the rectangle formed by the
* two points.
*
* @param entity an entity
* @param x1 x coordinate of the first point
* @param y1 y coordinate of the first point
* @param x2 x coordinate of the second point
* @param y2 y coordinate of the second point
* @throws MapException if the entity is not resizable of the rectangle width or its height is
* zero or the coordinates or the coordinates are not multiple of 8
*/
public void setEntityPosition(MapEntity entity, int x1, int y1, int x2, int y2)
throws MapException {
entity.setPositionInMap(x1, y1, x2, y2);
setChanged();
notifyObservers();
}
/**
* Removes an entity from the map.
*
* @param entity the entity to remove
*/
public void removeEntity(MapEntity entity) {
allEntities[entity.getLayer().getId()].remove(entity);
setChanged();
notifyObservers();
}
/**
* Checks that the map is valid, i.e. that it can be played without risk.
*
* @throws MapException if the map is not valid (e.g. no tileset is selected, or some entities are
* not in a valid state).
*/
public void checkValidity() throws MapException {
// check that a tileset is selected
if (tilesetId.length() == 0) {
throw new MapException("No tileset is selected");
}
// check that all entities are valid
for (MapEntities entities : allEntities) {
for (MapEntity entity : entities) {
if (!entity.isValid()) {
throw new InvalidEntityException("The map contains an invalid entity.", entity);
}
}
}
}
/**
* Brings the specified entities to the front, keeping their layer. The order of the specified
* entities in the map is unchanged.
*
* @param entities the entities to move
*/
public void bringToFront(List<MapEntity> entities) {
List<MapEntity> sortedEntities = getSortedEntities(entities);
// bring to front each entity from sortedEntities
ListIterator<MapEntity> iterator = sortedEntities.listIterator(0);
while (iterator.hasNext()) {
MapEntity entity = iterator.next();
Layer layer = entity.getLayer();
allEntities[layer.getId()].remove(entity);
allEntities[layer.getId()].addLast(entity);
}
setChanged();
notifyObservers();
}
/**
* Brings the specified entities to the back, keeping their layer. The order of the specified
* entities in the map is unchanged.
*
* @param entities the entities to move
*/
public void bringToBack(List<MapEntity> entities) {
List<MapEntity> sortedEntities = getSortedEntities(entities);
// bring to back each entity from sortedEntities
ListIterator<MapEntity> iterator = sortedEntities.listIterator(sortedEntities.size());
while (iterator.hasPrevious()) {
MapEntity entity = iterator.previous();
Layer layer = entity.getLayer();
allEntities[layer.getId()].remove(entity);
allEntities[layer.getId()].addFirst(entity);
}
setChanged();
notifyObservers();
}
/**
* Changes the tileset of the map.
*
* @param tilesetId id of the new tileset, or an empty string to set no tileset
* @return true if the tileset was loaded successfuly, false if some tiles could not be loaded in
* this tileset
* @throws MapException if this tileset could be applied
*/
public boolean setTileset(String tilesetId) throws ZSDXException {
this.badTiles = false;
// if the tileset is removed
if (tilesetId.length() == 0 && this.tilesetId.length() != 0) {
this.tilesetId = tilesetId;
this.tileset = null;
setChanged();
notifyObservers();
}
// if the tileset is changed
else if (!tilesetId.equals(this.tilesetId)) {
this.tileset = new Tileset(tilesetId);
for (Layer layer : Layer.values()) {
LinkedList<MapEntity> entitiesToRemove = new LinkedList<MapEntity>();
for (MapEntity entity : allEntities[layer.getId()]) {
try {
entity.setTileset(tileset);
} catch (NoSuchTilePatternException ex) {
// the entity is not valid anymore, we should remove it from the map
entitiesToRemove.add(entity);
badTiles = true;
}
}
for (MapEntity entity : entitiesToRemove) {
allEntities[layer.getId()].remove(entity);
}
}
this.tilesetId = tilesetId;
setChanged();
notifyObservers(tileset);
}
return !badTiles;
}
/**
* Returns the entities located in a rectangle defined by two points.
*
* @param x1 x coordinate of the first point
* @param y1 y coordinate of the first point
* @param x2 x coordinate of the second point
* @param y2 y coordinate of the second point
*/
public List<MapEntity> getEntitiesInRectangle(int x1, int y1, int x2, int y2) {
List<MapEntity> entitiesInRectangle = new LinkedList<MapEntity>();
int x = Math.min(x1, x2);
int width = Math.abs(x2 - x1);
int y = Math.min(y1, y2);
int height = Math.abs(y2 - y1);
Rectangle rectangle = new Rectangle(x, y, width, height);
for (Layer layer : Layer.values()) {
for (MapEntity entity : allEntities[layer.getId()]) {
if (rectangle.contains(entity.getPositionInMap())) {
entitiesInRectangle.add(entity);
}
}
}
return entitiesInRectangle;
}
/**
* Changes the size of an entity on the map.
*
* @param entity an entity
* @param width the new width
* @param height the new height
* @throws MapException if the entity is not resizable or the size specified is lower than or
* equal to zero or the size specified is not divisible by 8
*/
public void setEntitySize(MapEntity entity, int width, int height) throws MapException {
entity.setSize(width, height);
setChanged();
notifyObservers();
}
/**
* Changes the position of an entity on the map, by specifying its rectangle. The entity is
* resized so that it fits exactly in the rectangle.
*
* @param entity an entity
* @param position a rectangle
* @throws MapException if the entity is not resizable of the rectangle width or its height is
* zero
*/
public void setEntityPosition(MapEntity entity, Rectangle position) throws MapException {
entity.setPositionInMap(position);
setChanged();
notifyObservers();
}
/**
* Loads the map from its file.
*
* @throws ZSDXException if the file could not be read
*/
public void load() throws ZSDXException {
int lineNumber = 0;
try {
// get the map name in the game resource database
Resource mapResource = Project.getResource(ResourceType.MAP);
setName(mapResource.getElementName(mapId));
File mapFile = Project.getMapFile(mapId);
BufferedReader in = new BufferedReader(new FileReader(mapFile));
// read the map general info
// syntax: width height world floor x y small_keys_variable tileset_id music_id
String line = in.readLine();
if (line == null) {
throw new ZSDXException("The map file is empty");
}
lineNumber++;
StringTokenizer tokenizer = new StringTokenizer(line);
int width = Integer.parseInt(tokenizer.nextToken());
int height = Integer.parseInt(tokenizer.nextToken());
setSize(new Dimension(width, height));
setWorld(Integer.parseInt(tokenizer.nextToken()));
setFloor(Integer.parseInt(tokenizer.nextToken()));
int x = Integer.parseInt(tokenizer.nextToken());
int y = Integer.parseInt(tokenizer.nextToken());
setLocation(new Point(x, y));
setSmallKeysVariable(Integer.parseInt(tokenizer.nextToken()));
setTileset(tokenizer.nextToken());
setMusic(tokenizer.nextToken());
// read the map entities
line = in.readLine();
while (line != null) {
lineNumber++;
try {
MapEntity entity = MapEntity.createFromString(this, line);
addEntity(entity);
} catch (NoSuchTilePatternException ex) {
badTiles = true;
}
line = in.readLine();
}
in.close();
history.setSaved();
} catch (NumberFormatException ex) {
throw new ZSDXException("Line " + lineNumber + ": Integer expected");
} catch (IndexOutOfBoundsException ex) {
throw new ZSDXException("Line " + lineNumber + ": Value expected");
} catch (ZSDXException ex) {
throw new ZSDXException("Line " + lineNumber + ": " + ex.getMessage());
} catch (IOException ex) {
throw new ZSDXException(ex.getMessage());
}
setChanged();
notifyObservers();
}
/**
* Saves the map into its file.
*
* @throws ZSDXException if the file could not be written for various reasons
*/
public void save() throws ZSDXException {
// check that the map is valid
checkValidity();
try {
// open the map file
File mapFile = Project.getMapFile(mapId);
PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(mapFile)));
// print the map general info
// syntax: width height world floor x y small_keys_variable tileset_id music_id
out.print(size.width);
out.print('\t');
out.print(size.height);
out.print('\t');
out.print(world);
out.print('\t');
out.print(floor);
out.print('\t');
out.print(location.x);
out.print('\t');
out.print(location.y);
out.print('\t');
out.print(smallKeysVariable);
out.print('\t');
out.print(tilesetId);
out.print('\t');
out.print(musicId);
out.println();
for (Layer layer : Layer.values()) {
MapEntities entities = allEntities[layer.getId()];
// print the entities
for (MapEntity entity : entities) {
out.print(entity.toString());
out.println();
}
}
out.close();
history.setSaved();
// also update the map name in the global resource list
Resource mapResource = Project.getResource(ResourceType.MAP);
mapResource.setElementName(mapId, name);
Project.getResourceDatabase().save();
// upate the dungeon elements of this map
if (isInDungeon()) {
Dungeon.saveMapInfo(this);
}
// create a script for the map if necessary
File scriptFile = Project.getMapScriptFile(mapId);
if (!scriptFile.exists()) {
scriptFile.createNewFile();
}
} catch (IOException ex) {
throw new MapException(ex.getMessage());
}
}
