diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..6b468b6
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*.class
diff --git a/pathfinding/AbstractNode.java b/pathfinding/AbstractNode.java
new file mode 100644
index 0000000..70d2a14
--- /dev/null
+++ b/pathfinding/AbstractNode.java
@@ -0,0 +1,351 @@
+/*
+ Copyright (C) 2012 http://software-talk.org/ (developer@software-talk.org)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+*/
+
+package pathfinding;
+
+/**
+ * This class represents an AbstractNode. It has all the appropriate fields as well
+ * as getter and setter to be used by the A* algorithm.
+ *
+ *
+ * An AbstractNode has x- and y-coordinates and can be walkable or not.
+ * A previous AbstractNode may be set, as well as the
+ * fCosts, gCosts and hCosts.
+ *
+ *
+ * fCosts: gCosts + hCosts
+ *
+ * gCosts: calculated costs from start AbstractNode to this AbstractNode
+ *
+ * hCosts: estimated costs to get from this AbstractNode to end AbstractNode
+ *
+ *
+ * A subclass has to override the heuristic function
+ *
+ * sethCosts(AbstractNode endAbstractNode)
+ *
+ * @see ExampleNode#sethCosts(AbstractNode endNode) example Implementation using manhatten method
+ *
+ *
+ * @version 1.0
+ */
+public abstract class AbstractNode {
+
+ /** costs to move sideways from one square to another. */
+ protected static final int BASICMOVEMENTCOST = 10;
+ /** costs to move diagonally from one square to another. */
+ protected static final int DIAGONALMOVEMENTCOST = 14;
+
+ private int xPosition;
+ private int yPosition;
+ private boolean walkable;
+
+ // for pathfinding:
+
+ /** the previous AbstractNode of this one on the currently calculated path. */
+ private AbstractNode previous;
+
+ /** weather or not the move from previous to this AbstractNode is diagonally. */
+ private boolean diagonally;
+
+ /** optional extra penalty. */
+ private int movementPanelty;
+
+ //private int fCosts; // g + h costs
+
+ /** calculated costs from start AbstractNode to this AbstractNode. */
+ private int gCosts;
+
+ /** estimated costs to get from this AbstractNode to end AbstractNode. */
+ private int hCosts;
+
+ /**
+ * constructs a walkable AbstractNode with given coordinates.
+ *
+ * @param xPosition
+ * @param yPosition
+ */
+ public AbstractNode(int xPosition, int yPosition) {
+ this.xPosition = xPosition;
+ this.yPosition = yPosition;
+ this.walkable = true;
+ this.movementPanelty = 0;
+ }
+
+ /**
+ * returns weather or not the move from the previousAbstractNode was
+ * diagonally. If it is not diagonal, it is sideways.
+ *
+ * @return
+ */
+ public boolean isDiagonaly() {
+ return diagonally;
+ }
+
+ /**
+ * sets weather or not the move from the previousAbstractNode was
+ * diagonally. If it is not diagonal, it is sideways.
+ *
+ * @param isDiagonaly
+ */
+ public void setIsDiagonaly(boolean isDiagonaly) {
+ this.diagonally = isDiagonaly;
+ }
+
+ /**
+ * sets x and y coordinates.
+ *
+ * @param x
+ * @param y
+ */
+ public void setCoordinates(int x, int y) {
+ this.xPosition = x;
+ this.yPosition = y;
+ }
+
+ /**
+ * @return the xPosition
+ */
+ public int getxPosition() {
+ return xPosition;
+ }
+
+ /**
+ * @return the yPosition
+ */
+ public int getyPosition() {
+ return yPosition;
+ }
+
+ /**
+ * @return the walkable
+ */
+ public boolean isWalkable() {
+ return walkable;
+ }
+
+ /**
+ * @param walkable the walkable to set
+ */
+ public void setWalkable(boolean walkable) {
+ this.walkable = walkable;
+ }
+
+ /**
+ * returns the node set as previous node on the current path.
+ *
+ * @return the previous
+ */
+ public AbstractNode getPrevious() {
+ return previous;
+ }
+
+ /**
+ * @param previous the previous to set
+ */
+ public void setPrevious(AbstractNode previous) {
+ this.previous = previous;
+ }
+
+ /**
+ * sets a general penalty for the movement on this node.
+ *
+ * @param movementPanelty the movementPanelty to set
+ */
+ public void setMovementPanelty(int movementPanelty) {
+ this.movementPanelty = movementPanelty;
+ }
+
+ /**
+ * returns gCosts + hCosts.
+ *
+ *
+ *
+ * @return the fCosts
+ */
+ public int getfCosts() {
+ return gCosts + hCosts;
+ }
+
+ /**
+ * returns the calculated costs from start AbstractNode to this AbstractNode.
+ *
+ * @return the gCosts
+ */
+ public int getgCosts() {
+ return gCosts;
+ }
+
+ /**
+ * sets gCosts to gCosts plus movementPanelty
+ * for this AbstractNode.
+ *
+ * @param gCosts the gCosts to set
+ */
+ private void setgCosts(int gCosts) {
+ this.gCosts = gCosts + movementPanelty;
+ }
+
+ /**
+ * sets gCosts to gCosts plus movementPanelty
+ * for this AbstractNode given the previous AbstractNode as well as the basic cost
+ * from it to this AbstractNode.
+ *
+ * @param previousAbstractNode
+ * @param basicCost
+ */
+ public void setgCosts(AbstractNode previousAbstractNode, int basicCost) {
+ setgCosts(previousAbstractNode.getgCosts() + basicCost);
+ }
+
+ /**
+ * sets gCosts to gCosts plus movementPanelty
+ * for this AbstractNode given the previous AbstractNode.
+ *
+ * It will assume BASICMOVEMENTCOST as the cost from
+ * previousAbstractNode to itself if the movement is not diagonally,
+ * otherwise it will assume DIAGONALMOVEMENTCOST.
+ * Weather or not it is diagonally is set in the Map class method which
+ * finds the adjacent AbstractNodes.
+ *
+ * @param previousAbstractNode
+ */
+ public void setgCosts(AbstractNode previousAbstractNode) {
+ if (diagonally) {
+ setgCosts(previousAbstractNode, DIAGONALMOVEMENTCOST);
+ } else {
+ setgCosts(previousAbstractNode, BASICMOVEMENTCOST);
+ }
+ }
+
+ /**
+ * calculates - but does not set - g costs.
+ *
+ * It will assume BASICMOVEMENTCOST as the cost from
+ * previousAbstractNode to itself if the movement is not diagonally,
+ * otherwise it will assume DIAGONALMOVEMENTCOST.
+ * Weather or not it is diagonally is set in the Map class method which
+ * finds the adjacent AbstractNodes.
+ *
+ * @param previousAbstractNode
+ * @return gCosts
+ */
+ public int calculategCosts(AbstractNode previousAbstractNode) {
+ if (diagonally) {
+ return (previousAbstractNode.getgCosts()
+ + DIAGONALMOVEMENTCOST + movementPanelty);
+ } else {
+ return (previousAbstractNode.getgCosts()
+ + BASICMOVEMENTCOST + movementPanelty);
+ }
+ }
+
+ /**
+ * calculates - but does not set - g costs, adding a movementPanelty.
+ *
+ * @param previousAbstractNode
+ * @param movementCost costs from previous AbstractNode to this AbstractNode.
+ * @return gCosts
+ */
+ public int calculategCosts(AbstractNode previousAbstractNode, int movementCost) {
+ return (previousAbstractNode.getgCosts() + movementCost + movementPanelty);
+ }
+
+ /**
+ * returns estimated costs to get from this AbstractNode to end AbstractNode.
+ *
+ * @return the hCosts
+ */
+ public int gethCosts() {
+ return hCosts;
+ }
+
+ /**
+ * sets hCosts.
+ *
+ * @param hCosts the hCosts to set
+ */
+ protected void sethCosts(int hCosts) {
+ this.hCosts = hCosts;
+ }
+
+ /**
+ * calculates hCosts for this AbstractNode to a given end AbstractNode.
+ * Uses Manhatten method.
+ *
+ * @param endAbstractNode
+ */
+ public abstract void sethCosts(AbstractNode endAbstractNode);
+
+
+ /*
+ * @return the movementPanelty
+ */
+ private int getMovementPanelty() {
+ return movementPanelty;
+ }
+
+ /**
+ * returns a String containing the coordinates, as well as h, f and g
+ * costs.
+ *
+ * @return
+ */
+ @Override
+ public String toString() {
+ return "(" + getxPosition() + ", " + getyPosition() + "): h: "
+ + gethCosts() + " g: " + getgCosts() + " f: " + getfCosts();
+ }
+
+ /**
+ * returns weather the coordinates of AbstractNodes are equal.
+ *
+ * @param obj
+ * @return
+ */
+ @Override
+ public boolean equals(Object obj) {
+ if (obj == null) {
+ return false;
+ }
+ if (getClass() != obj.getClass()) {
+ return false;
+ }
+ final AbstractNode other = (AbstractNode) obj;
+ if (this.xPosition != other.xPosition) {
+ return false;
+ }
+ if (this.yPosition != other.yPosition) {
+ return false;
+ }
+ return true;
+ }
+
+ /**
+ * returns hash code calculated with coordinates.
+ *
+ * @return
+ */
+ @Override
+ public int hashCode() {
+ int hash = 3;
+ hash = 17 * hash + this.xPosition;
+ hash = 17 * hash + this.yPosition;
+ return hash;
+ }
+
+}
diff --git a/pathfinding/ExampleFactory.java b/pathfinding/ExampleFactory.java
new file mode 100644
index 0000000..88edfdc
--- /dev/null
+++ b/pathfinding/ExampleFactory.java
@@ -0,0 +1,30 @@
+/*
+ Copyright (C) 2012 http://software-talk.org/ (developer@software-talk.org)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+*/
+
+package pathfinding;
+
+/**
+ * A simple Factory for example nodes.
+ */
+public class ExampleFactory implements NodeFactory {
+
+ @Override
+ public AbstractNode createNode(int x, int y) {
+ return new ExampleNode(x, y);
+ }
+
+}
diff --git a/pathfinding/ExampleNode.java b/pathfinding/ExampleNode.java
new file mode 100644
index 0000000..8332bf6
--- /dev/null
+++ b/pathfinding/ExampleNode.java
@@ -0,0 +1,41 @@
+/*
+ Copyright (C) 2012 http://software-talk.org/ (developer@software-talk.org)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+*/
+
+package pathfinding;
+
+/**
+ * A simple Example implementation of a Node only overriding the sethCosts
+ * method; uses manhatten method.
+ */
+public class ExampleNode extends AbstractNode {
+
+ public ExampleNode(int xPosition, int yPosition) {
+ super(xPosition, yPosition);
+ // do other init stuff
+ }
+
+ public void sethCosts(AbstractNode endNode) {
+ this.sethCosts((absolute(this.getxPosition() - endNode.getxPosition())
+ + absolute(this.getyPosition() - endNode.getyPosition()))
+ * BASICMOVEMENTCOST);
+ }
+
+ private int absolute(int a) {
+ return a > 0 ? a : -a;
+ }
+
+}
diff --git a/pathfinding/ExampleUsage.java b/pathfinding/ExampleUsage.java
new file mode 100644
index 0000000..b47bd1e
--- /dev/null
+++ b/pathfinding/ExampleUsage.java
@@ -0,0 +1,43 @@
+/*
+ Copyright (C) 2012 http://software-talk.org/ (developer@software-talk.org)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+*/
+
+package pathfinding;
+
+import java.util.List;
+
+/**
+ * A simple example for the usage of this package.
+ *
+ * @see ExampleFactory
+ * @see ExampleNode
+ */
+public class ExampleUsage {
+
+ /**
+ * @param args the command line arguments
+ */
+ public static void main(String[] args) {
+ Map myMap = new Map(50, 50, new ExampleFactory());
+ List path = myMap.findPath(0, 0, 40, 40);
+
+ for (int i = 0; i < path.size(); i++) {
+ System.out.print("(" + path.get(i).getxPosition() + ", " + path.get(i).getyPosition() + ") -> ");
+ }
+ }
+
+
+}
diff --git a/pathfinding/LICENSE b/pathfinding/LICENSE
new file mode 100644
index 0000000..94a9ed0
--- /dev/null
+++ b/pathfinding/LICENSE
@@ -0,0 +1,674 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc.
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+ The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works. By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users. We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors. You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
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+you modify it: responsibilities to respect the freedom of others.
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+ For example, if you distribute copies of such a program, whether
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+.
diff --git a/pathfinding/Map.java b/pathfinding/Map.java
new file mode 100644
index 0000000..d06e355
--- /dev/null
+++ b/pathfinding/Map.java
@@ -0,0 +1,363 @@
+/*
+ Copyright (C) 2012 http://software-talk.org/ (developer@software-talk.org)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+*/
+
+/*
+ * // TODO
+ * possible optimizations:
+ * - calculate f as soon as g or h are set, so it will not have to be
+ * calculated each time it is retrieved
+ * - store nodes in openList sorted by their f value.
+ */
+
+package pathfinding;
+
+import java.util.LinkedList;
+import java.util.List;
+
+/**
+ * This class represents a simple map.
+ *
+ * It's width as well as hight can be set up on construction.
+ * The map can represent nodes that are walkable or not, it can be printed
+ * to sto, and it can calculate the shortest path between two nodes avoiding
+ * walkable nodes.
+ *
+ *
+ * Usage of this package:
+ * Create a node class which extends AbstractNode and implements the sethCosts
+ * method.
+ * Create a NodeFactory that implements the NodeFactory interface.
+ * Create Map instance with those created classes.
+ * @see ExampleUsage ExampleUsage
+ *
+ *
+ * @see AbstractNode
+ * @see NodeFactory
+ * @version 1.0
+ * @param
+ */
+public class Map {
+
+ /** weather or not it is possible to walk diagonally on the map in general. */
+ protected static boolean CANMOVEDIAGONALY = true;
+
+ /** holds nodes. first dim represents x-, second y-axis. */
+ private T[][] nodes;
+
+ /** width + 1 is size of first dimension of nodes. */
+ protected int width;
+ /** higth + 1 is size of second dimension of nodes. */
+ protected int higth;
+
+ /** a Factory to create instances of specified nodes. */
+ private NodeFactory nodeFactory;
+
+ /**
+ * constructs a squared map with given width and hight.
+ *
+ * The nodes will be instanciated througth the given nodeFactory.
+ *
+ * @param width
+ * @param higth
+ * @param nodeFactory
+ */
+ public Map(int width, int higth, NodeFactory nodeFactory) {
+ // TODO check parameters. width and higth should be > 0.
+ // TODO: Find the length of the track as the height
+ this.nodeFactory = nodeFactory;
+ nodes = (T[][]) new AbstractNode[width][higth];
+ this.width = width - 1;
+ this.higth = higth - 1;
+ initEmptyNodes();
+ }
+
+ /**
+ * initializes all nodes. Their coordinates will be set correctly.
+ TODO: Edit this part
+ */
+ private void initEmptyNodes() {
+ for (int i = 0; i <= width; i++) {
+ for (int j = 0; j <= higth; j++) {
+ nodes[i][j] = (T) nodeFactory.createNode(i, j);
+ }
+ }
+ }
+
+ /**
+ * sets nodes walkable field at given coordinates to given value.
+ *
+ * x/y must be bigger or equal to 0 and smaller or equal to width/hight.
+ *
+ * @param x
+ * @param y
+ * @param bool
+ */
+ public void setWalkable(int x, int y, boolean bool) {
+ // TODO check parameter.
+ nodes[x][y].setWalkable(bool);
+ }
+
+ /**
+ * returns node at given coordinates.
+ *
+ * x/y must be bigger or equal to 0 and smaller or equal to width/hight.
+ *
+ * @param x
+ * @param y
+ * @return node
+ */
+ public final T getNode(int x, int y) {
+ // TODO check parameter.
+ return nodes[x][y];
+ }
+
+ /**
+ * prints map to sto. Feel free to override this method.
+ *
+ * a player will be represented as "o", an unwakable terrain as "#".
+ * Movement penalty will not be displayed.
+ */
+ public void drawMap() {
+ for (int i = 0; i <= width; i++) {
+ print(" _"); // boarder of map
+ }
+ print("\n");
+
+ for (int j = higth; j >= 0; j--) {
+ print("|"); // boarder of map
+ for (int i = 0; i <= width; i++) {
+ if (nodes[i][j].isWalkable()) {
+ print(" ");
+ } else {
+ print(" #"); // draw unwakable
+ }
+ }
+ print("|\n"); // boarder of map
+ }
+
+ for (int i = 0; i <= width; i++) {
+ print(" _"); // boarder of map
+ }
+ }
+
+ /**
+ * prints something to sto.
+ */
+ private void print(String s) {
+ System.out.print(s);
+ }
+
+
+ /* Variables and methodes for path finding */
+
+
+ // variables needed for path finding
+
+ /** list containing nodes not visited but adjacent to visited nodes. */
+ private List openList;
+ /** list containing nodes already visited/taken care of. */
+ private List closedList;
+ /** done finding path? */
+ private boolean done = false;
+
+ /**
+ * finds an allowed path from start to goal coordinates on this map.
+ *
+ * This method uses the A* algorithm. The hCosts value is calculated in
+ * the given Node implementation.
+ *
+ * This method will return a LinkedList containing the start node at the
+ * beginning followed by the calculated shortest allowed path ending
+ * with the end node.
+ *
+ * If no allowed path exists, an empty list will be returned.
+ *
+ *
+ * x/y must be bigger or equal to 0 and smaller or equal to width/hight.
+ *
+ * @param oldX
+ * @param oldY
+ * @param newX
+ * @param newY
+ * @return
+ */
+ public final List findPath(int oldX, int oldY, int newX, int newY) {
+ // TODO check input
+ openList = new LinkedList();
+ closedList = new LinkedList();
+ openList.add(nodes[oldX][oldY]); // add starting node to open list
+
+ done = false;
+ T current;
+ while (!done) {
+ current = lowestFInOpen(); // get node with lowest fCosts from openList
+ closedList.add(current); // add current node to closed list
+ openList.remove(current); // delete current node from open list
+
+ if ((current.getxPosition() == newX)
+ && (current.getyPosition() == newY)) { // found goal
+ return calcPath(nodes[oldX][oldY], current);
+ }
+
+ // for all adjacent nodes:
+ List adjacentNodes = getAdjacent(current);
+ for (int i = 0; i < adjacentNodes.size(); i++) {
+ T currentAdj = adjacentNodes.get(i);
+ if (!openList.contains(currentAdj)) { // node is not in openList
+ currentAdj.setPrevious(current); // set current node as previous for this node
+ currentAdj.sethCosts(nodes[newX][newY]); // set h costs of this node (estimated costs to goal)
+ currentAdj.setgCosts(current); // set g costs of this node (costs from start to this node)
+ openList.add(currentAdj); // add node to openList
+ } else { // node is in openList
+ if (currentAdj.getgCosts() > currentAdj.calculategCosts(current)) { // costs from current node are cheaper than previous costs
+ currentAdj.setPrevious(current); // set current node as previous for this node
+ currentAdj.setgCosts(current); // set g costs of this node (costs from start to this node)
+ }
+ }
+ }
+
+ if (openList.isEmpty()) { // no path exists
+ return new LinkedList(); // return empty list
+ }
+ }
+ return null; // unreachable
+ }
+
+ /**
+ * calculates the found path between two points according to
+ * their given previousNode field.
+ *
+ * @param start
+ * @param goal
+ * @return
+ */
+ private List calcPath(T start, T goal) {
+ // TODO if invalid nodes are given (eg cannot find from
+ // goal to start, this method will result in an infinite loop!)
+ LinkedList path = new LinkedList();
+
+ T curr = goal;
+ boolean done = false;
+ while (!done) {
+ path.addFirst(curr);
+ curr = (T) curr.getPrevious();
+
+ if (curr.equals(start)) {
+ done = true;
+ }
+ }
+ return path;
+ }
+
+ /**
+ * returns the node with the lowest fCosts.
+ *
+ * @return
+ */
+ private T lowestFInOpen() {
+ // TODO currently, this is done by going through the whole openList!
+ T cheapest = openList.get(0);
+ for (int i = 0; i < openList.size(); i++) {
+ if (openList.get(i).getfCosts() < cheapest.getfCosts()) {
+ cheapest = openList.get(i);
+ }
+ }
+ return cheapest;
+ }
+
+ /**
+ * returns a LinkedList with nodes adjacent to the given node.
+ * if those exist, are walkable and are not already in the closedList!
+ */
+ private List getAdjacent(T node) {
+ // TODO make loop
+ int x = node.getxPosition();
+ int y = node.getyPosition();
+ List adj = new LinkedList();
+
+ T temp;
+ if (x > 0) {
+ temp = this.getNode((x - 1), y);
+ if (temp.isWalkable() && !closedList.contains(temp)) {
+ temp.setIsDiagonaly(false);
+ adj.add(temp);
+ }
+ }
+
+ if (x < width) {
+ temp = this.getNode((x + 1), y);
+ if (temp.isWalkable() && !closedList.contains(temp)) {
+ temp.setIsDiagonaly(false);
+ adj.add(temp);
+ }
+ }
+
+ if (y > 0) {
+ temp = this.getNode(x, (y - 1));
+ if (temp.isWalkable() && !closedList.contains(temp)) {
+ temp.setIsDiagonaly(false);
+ adj.add(temp);
+ }
+ }
+
+ if (y < higth) {
+ temp = this.getNode(x, (y + 1));
+ if (temp.isWalkable() && !closedList.contains(temp)) {
+ temp.setIsDiagonaly(false);
+ adj.add(temp);
+ }
+ }
+
+
+ // add nodes that are diagonaly adjacent too:
+ if (CANMOVEDIAGONALY) {
+ if (x < width && y < higth) {
+ temp = this.getNode((x + 1), (y + 1));
+ if (temp.isWalkable() && !closedList.contains(temp)) {
+ temp.setIsDiagonaly(true);
+ adj.add(temp);
+ }
+ }
+
+ if (x > 0 && y > 0) {
+ temp = this.getNode((x - 1), (y - 1));
+ if (temp.isWalkable() && !closedList.contains(temp)) {
+ temp.setIsDiagonaly(true);
+ adj.add(temp);
+ }
+ }
+
+ if (x > 0 && y < higth) {
+ temp = this.getNode((x - 1), (y + 1));
+ if (temp.isWalkable() && !closedList.contains(temp)) {
+ temp.setIsDiagonaly(true);
+ adj.add(temp);
+ }
+ }
+
+ if (x < width && y > 0) {
+ temp = this.getNode((x + 1), (y - 1));
+ if (temp.isWalkable() && !closedList.contains(temp)) {
+ temp.setIsDiagonaly(true);
+ adj.add(temp);
+ }
+ }
+ }
+ return adj;
+ }
+
+}
diff --git a/pathfinding/NodeFactory.java b/pathfinding/NodeFactory.java
new file mode 100644
index 0000000..a58c58c
--- /dev/null
+++ b/pathfinding/NodeFactory.java
@@ -0,0 +1,44 @@
+/*
+ Copyright (C) 2012 http://software-talk.org/ (developer@software-talk.org)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+*/
+
+package pathfinding;
+
+/**
+ * A Factory which creates new instances of an implementation of the
+ * AbstractNode at given coordinates.
+ *
+ * Must be implemented and given to Map instance on
+ * construction.
+ *
+ * @see AbstractNode
+ * @version 1.0
+ */
+public interface NodeFactory {
+
+ /**
+ * creates new instances of an implementation of the
+ * AbstractNode.
+ * In an implementation, it should return a new node with its position
+ * set to the given x and y values.
+ *
+ * @param x position on the x-axis
+ * @param y position on the y-axis
+ * @return
+ */
+ public AbstractNode createNode(int x, int y);
+
+}
diff --git a/pathfinding/package-info.java b/pathfinding/package-info.java
new file mode 100644
index 0000000..b0669ed
--- /dev/null
+++ b/pathfinding/package-info.java
@@ -0,0 +1,24 @@
+/*
+ Copyright (C) 2012 http://software-talk.org/ (developer@software-talk.org)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+*/
+
+/**
+ * This package may be used for its A* pathfinding algorithm.
+ * Extend the AbstractNode class as you need, but also implement the gethCosts
+ * method with a heuristic.
+ * The Map class may be extended as well.
+ */
+package pathfinding;