started to implement route search

src/main/java/de/srsoftware/web4rail/Application.java

@@ -3,6 +3,7 @@ package de.srsoftware.web4rail;
 import java.awt.Desktop;
 import java.io.File;
 import java.io.FileInputStream;
+import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.lang.reflect.InvocationTargetException;
@@ -39,7 +40,11 @@ public class Application {
 		server.createContext("/js" , client -> sendFile(client));
         server.setExecutor(java.util.concurrent.Executors.newCachedThreadPool());
         server.start();
-		plan = Plan.load("default.plan");
+        try {
+        	plan = Plan.load("default.plan");
+        } catch (FileNotFoundException e) {
+        	plan = new Plan();
+		}
         Desktop.getDesktop().browse(URI.create("http://localhost:"+config.getInt(PORT)+"/plan"));
 	}
 

src/main/java/de/srsoftware/web4rail/Connector.java

@@ -0,0 +1,31 @@
+package de.srsoftware.web4rail;
+
+public class Connector {
+
+	private String from;
+	private int y;
+	private int x;
+
+	public Connector(int x, int y, String from) {
+		this.x = x;
+		this.y = y;
+		this.from = from;
+	}
+	
+	public String from() {
+		return from;
+	}
+
+	public int x() {
+		return x;
+	}
+
+	public int y() {
+		return y;
+	}
+
+	@Override
+	public String toString() {
+		return getClass().getSimpleName()+"("+x+", "+y+", from "+from+")";
+	}
+}

src/main/java/de/srsoftware/web4rail/Plan.java

@@ -7,8 +7,10 @@ import java.io.FileReader;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.lang.reflect.InvocationTargetException;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Map.Entry;
 import java.util.Vector;
 
@@ -59,10 +61,10 @@ public class Plan {
 	private static final String Y = "y";
 	private static final String FILE = "file";
 	private static final String DIRECTION = "direction";
-	private static final String EAST = "east";
-	private static final String WEST = "west";
-	private static final String SOUTH = "south";
-	private static final String NORTH = "north";
+	public static final String EAST = "east";
+	public static final String WEST = "west";
+	public static final String SOUTH = "south";
+	public static final String NORTH = "north";
 	
 	private HashMap<Integer,HashMap<Integer,Tile>> tiles = new HashMap<Integer,HashMap<Integer,Tile>>();
 	private HashSet<Block> blocks = new HashSet<Block>();
@@ -88,12 +90,28 @@ public class Plan {
 	}
 	
 	private String analyze() {
+		Vector<Route> routes = new Vector<Route>();
 		for (Block block : blocks) {
 			LOG.debug("searching routes from {}",block);
+			for (Connector con : block.startPoints()) {
+				routes.addAll(follow(new Route().start(block),con));
+			}
 		}
 		return "analyze() not implemented, yet!";
 	}
 	
+	private Collection<Route> follow(Route route, Connector con) {
+		LOG.debug("follow({}, {})",route,con);
+		Tile tile = get(con.x(),con.y());
+		Vector<Route> result = new Vector<>();
+		if (tile == null) return result;
+		route.add(tile);
+		List<Connector> connectors = tile.connections(con.from());
+		List<Route>routes = route.multiply(connectors.size());
+		for (int i=0; i<connectors.size(); i++) result.addAll(follow(routes.get(i),connectors.get(i)));
+		return routes;
+	}
+
 	public Tile get(int x, int y) {
 		HashMap<Integer, Tile> column = tiles.get(x);
 		return column == null ? null : column.get(y);

src/main/java/de/srsoftware/web4rail/Route.java

@@ -1,5 +1,39 @@
 package de.srsoftware.web4rail;
 
+import java.util.List;
+import java.util.Vector;
+
+import de.srsoftware.web4rail.tiles.Block;
+import de.srsoftware.web4rail.tiles.Tile;
+
 public class Route {
+	
+	private Vector<Tile> path; 
+
+	public void add(Tile tile) {
+		path.add(tile);
+	}
+	
+	protected Route clone() {
+		Route clone = new Route();
+		clone.path = new Vector<>(path);
+		return clone;
+	}
+
+	public List<Route> multiply(int size) {
+		Vector<Route> routes = new Vector<Route>();
+		for (int i=0; i<size; i++) routes.add(i==0 ? this : this.clone());
+		return routes;
+	}
+
+	public Route start(Block block) {
+		path = new Vector<Tile>();
+		path.add(block);
+		return this;
+	}
 
+	@Override
+	public String toString() {
+		return getClass().getSimpleName()+"("+path+")";
+	}
 }

src/main/java/de/srsoftware/web4rail/tiles/Block.java

@@ -1,10 +1,13 @@
 package de.srsoftware.web4rail.tiles;
 
+import java.util.List;
 import java.util.Set;
 
+import de.srsoftware.web4rail.Connector;
 import de.srsoftware.web4rail.Route;
-import de.srsoftware.web4rail.tiles.StretchableTile;
 
 public abstract class Block extends StretchableTile{
 	public abstract Set<Route> routes();
+
+	public abstract List<Connector> startPoints();
 }

src/main/java/de/srsoftware/web4rail/tiles/BlockH.java

@@ -2,12 +2,15 @@ package de.srsoftware.web4rail.tiles;
 
 import java.io.IOException;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
 import org.json.JSONObject;
 
 import de.srsoftware.tools.Tag;
+import de.srsoftware.web4rail.Connector;
+import de.srsoftware.web4rail.Plan;
 import de.srsoftware.web4rail.Route;
 
 public class BlockH extends Block{
@@ -45,10 +48,15 @@ public class BlockH extends Block{
 	}
 	
 	@Override
-	public Set<Route> routes() {
+	public Set<Route> routes() {		
 		return null;
 	}
 	
+	@Override
+	public List<Connector> startPoints() {
+		return List.of(new Connector(x-1, y, Plan.EAST),new Connector(x+len(), y, Plan.WEST));
+	}
+	
 	@Override
 	public Tag tag(Map<String, Object> replacements) throws IOException {
 		if (replacements == null) replacements = new HashMap<String, Object>();

src/main/java/de/srsoftware/web4rail/tiles/BlockV.java

@@ -2,12 +2,15 @@ package de.srsoftware.web4rail.tiles;
 
 import java.io.IOException;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
 import org.json.JSONObject;
 
 import de.srsoftware.tools.Tag;
+import de.srsoftware.web4rail.Connector;
+import de.srsoftware.web4rail.Plan;
 import de.srsoftware.web4rail.Route;
 
 public class BlockV extends Block{
@@ -49,6 +52,11 @@ public class BlockV extends Block{
 		return null;
 	}
 	
+	@Override
+	public List<Connector> startPoints() {
+		return List.of(new Connector(x,y-1,Plan.SOUTH),new Connector(x,y+height(),Plan.NORTH));
+	}
+	
 	@Override
 	public Tag tag(Map<String, Object> replacements) throws IOException {
 		if (replacements == null) replacements = new HashMap<String, Object>();

src/main/java/de/srsoftware/web4rail/tiles/DiagES.java

@@ -1,6 +1,21 @@
 package de.srsoftware.web4rail.tiles;
 
-public class DiagES extends Tile{
+import java.util.List;
+import java.util.Vector;
+
+import de.srsoftware.web4rail.Connector;
+import de.srsoftware.web4rail.Plan;
 
+public class DiagES extends Tile{
 
+	@Override
+	public List<Connector> connections(String from) {
+		switch (from) {
+			case Plan.SOUTH:
+				return List.of(new Connector(x+1,y,Plan.WEST));
+			case Plan.EAST:
+				return List.of(new Connector(x,y+1,Plan.NORTH));
+		}
+		return new Vector<>();
+	}
 }

src/main/java/de/srsoftware/web4rail/tiles/DiagWN.java

@@ -1,4 +1,21 @@
 package de.srsoftware.web4rail.tiles;
 
+import java.util.List;
+import java.util.Vector;
+
+import de.srsoftware.web4rail.Connector;
+import de.srsoftware.web4rail.Plan;
+
 public class DiagWN extends Tile{
+	
+	@Override
+	public List<Connector> connections(String from) {
+		switch (from) {
+			case Plan.NORTH:
+				return List.of(new Connector(x-1,y,Plan.EAST));
+			case Plan.WEST:
+				return List.of(new Connector(x,y-1,Plan.SOUTH));
+		}
+		return new Vector<>();
+	}
 }

src/main/java/de/srsoftware/web4rail/tiles/StraightH.java

@@ -1,7 +1,24 @@
 package de.srsoftware.web4rail.tiles;
 
+import java.util.List;
+import java.util.Vector;
+
+import de.srsoftware.web4rail.Connector;
+import de.srsoftware.web4rail.Plan;
+
 public class StraightH extends StretchableTile{
 	
+	@Override
+	public List<Connector> connections(String from) {
+		switch (from) {
+			case Plan.WEST:
+				return List.of(new Connector(x+len(),y,from));
+			case Plan.EAST:
+				return List.of(new Connector(x-1,y,from));
+		}
+		return new Vector<>();
+	}
+	
 	@Override
 	public int len() {
 		return length;

src/main/java/de/srsoftware/web4rail/tiles/Tile.java

@@ -5,9 +5,11 @@ import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Scanner;
+import java.util.Vector;
 
 import org.json.JSONObject;
 import org.slf4j.Logger;
@@ -16,6 +18,7 @@ import org.slf4j.LoggerFactory;
 import de.keawe.tools.translations.Translation;
 import de.srsoftware.tools.Tag;
 import de.srsoftware.web4rail.Application;
+import de.srsoftware.web4rail.Connector;
 import de.srsoftware.web4rail.Window;
 
 public abstract class Tile {
@@ -32,6 +35,11 @@ public abstract class Tile {
 	public JSONObject config() {
 		return new JSONObject();
 	}
+	
+	public List<Connector> connections(String from){
+		return new Vector<>();
+	}
+
 
 	public void configure(JSONObject config) {}
 	

src/main/java/de/srsoftware/web4rail/tiles/TurnoutWN.java

@@ -1,7 +1,22 @@
 package de.srsoftware.web4rail.tiles;
 
-public class TurnoutWN extends Turnout{
+import java.util.List;
+import java.util.Vector;
 
+import de.srsoftware.web4rail.Connector;
+import de.srsoftware.web4rail.Plan;
 
+public class TurnoutWN extends Turnout{
 
+	@Override
+	public List<Connector> connections(String from) {
+		switch (from) {
+			case Plan.WEST:
+				return List.of(new Connector(x+1,y,from),new Connector(x, y-1, Plan.SOUTH));
+			case Plan.EAST:
+			case Plan.NORTH:
+				return List.of(new Connector(x-1,y,Plan.EAST));
+		}
+		return new Vector<>();
+	}
 }