/**
* Cache the {@link Line2D} objects making up the maze.
*
* @param x Initial x coordinate.
* @param y Initial y coordinate.
* @param width Width of a cell.
* @param height Height of a cell.
*/
private void buildWalls(double x, double y, double width, double height) {
Point p = maze.getSize();
wallList = new ArrayList(p.getX() * p.getY());
for (int i = 0; i < p.getY(); i++) {
for (int j = 0; j < p.getX(); j++) {
Cell cell = maze.getCell(new Point(j, i));
if (cell.isWall(Direction.North)) {
wallList.add(
new Line2D.Double(
x + j * width, y + (i + 1) * height, x + (j + 1) * width, y + (i + 1) * height));
}
if (cell.isWall(Direction.East)) {
wallList.add(
new Line2D.Double(
x + (j + 1) * width, y + i * height, x + (j + 1) * width, y + (i + 1) * height));
}
}
}
}
public void paintComponent(Graphics g) {
super.paintComponent(g); // paint background
Graphics2D g2 = (Graphics2D) g;
// Turn on antialiasing
Map m = new HashMap();
m.put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2.addRenderingHints(m);
// Figure out how large the maze is
Point p = maze.getSize();
double llx = 0.0, lly = 0.0, width = 0.0, height = 0.0, cellwidth = 0.0, cellheight = 0.0;
// Do we need to update our cache?
if ((panelSize == null) || (panelSize != getSize())) {
panelSize = getSize();
llx = (double) panelSize.width * 0.025;
lly = (double) panelSize.height * 0.025;
width = (double) panelSize.width - (double) panelSize.width * 0.05;
height = (double) panelSize.height - (double) panelSize.height * 0.05;
cellwidth = width / (double) p.getX();
cellheight = height / (double) p.getY();
buildWalls(llx, lly, cellwidth, cellheight);
double diameter = java.lang.Math.min(cellwidth, cellheight) * 0.75;
player =
new Arc2D.Double(
new Rectangle2D.Double(-diameter / 2.0, -diameter / 2.0, diameter, diameter),
30.0,
300.0,
Arc2D.PIE);
diameter = java.lang.Math.min(cellwidth, cellheight) * 0.30;
projectile =
new Arc2D.Double(
new Rectangle2D.Double(-diameter / 2.0, -diameter / 2.0, diameter, diameter),
0.0,
360.0,
Arc2D.PIE);
}
// Flip coordinate system
g2.translate(0.0, (double) panelSize.height);
g2.scale(1.0, -1.0);
// Draw the maze walls
g2.setStroke(new BasicStroke(2.0f));
g2.setColor(Color.black);
g2.draw(new Rectangle2D.Double(llx, lly, width, height));
Iterator it = wallList.iterator();
while (it.hasNext()) {
Object o = it.next();
if (o instanceof Shape) {
g2.draw((Shape) o);
} else {
throw new Error();
}
}
Font font = new Font("Arial", Font.PLAIN, 9);
FontRenderContext frc = g2.getFontRenderContext();
// Obtain the location of the distinguished client
Point cp = maze.getClientPoint(client);
for (int i = 0; i < p.getY(); i++) {
for (int j = 0; j < p.getX(); j++) {
boolean cellVisible = true;
Line2D visLine =
new Line2D.Double(
llx + (cp.getX() + 0.5) * cellwidth,
lly + (cp.getY() + 0.5) * cellheight,
llx + (j + 0.5) * cellwidth,
lly + (i + 0.5) * cellheight);
/* Visibility testing */
/* Iterator visIt = wallList.iterator();
while(visIt.hasNext()) {
Object o = visIt.next();
if(o instanceof Line2D) {
Line2D l = (Line2D)o;
if(l.intersectsLine(visLine)) {
cellVisible = false;
}
} else {
throw new Error();
}
} */
if (cellVisible) {
Cell cell = maze.getCell(new Point(j, i));
Object o = cell.getContents();
if (o != null) {
if (o instanceof Client) {
Client c = (Client) o;
if (c instanceof GUIClient) {
g2.setColor(Color.green);
} else if (c instanceof RobotClient) {
g2.setColor(Color.red);
} else if (c instanceof RemoteClient) {
g2.setColor(Color.magenta);
}
double xoffset = llx + j * cellwidth + (cellwidth / 2.0);
double yoffset = lly + i * cellheight + (cellheight / 2.0);
Direction orient = c.getOrientation();
g2.translate(xoffset, yoffset);
double rotation = 0.0;
if (orient.equals(Direction.South)) {
rotation = -java.lang.Math.PI / 2.0;
} else if (orient.equals(Direction.North)) {
rotation = java.lang.Math.PI / 2.0;
} else if (orient.equals(Direction.West)) {
rotation = java.lang.Math.PI;
}
g2.rotate(rotation);
g2.fill(player);
g2.rotate(-rotation);
GlyphVector name = font.createGlyphVector(frc, c.getName());
g2.scale(1.0, -1.0);
g2.setColor(Color.black);
g2.drawGlyphVector(name, 0.0f, 0.0f);
g2.scale(1.0, -1.0);
g2.translate(-xoffset, -yoffset);
} else {
if (o instanceof Projectile) {
g2.setColor(Color.yellow);
double xoffset = llx + j * cellwidth + (cellwidth / 2.0);
double yoffset = lly + i * cellheight + (cellheight / 2.0);
g2.translate(xoffset, yoffset);
g2.fill(projectile);
g2.translate(-xoffset, -yoffset);
}
}
}
}
}
}
}