public void redrawTree(boolean doRepaint) {
displayText = false;
if (argument == null) return;
if (argument.isMultiRoots()) {
argument.deleteDummyRoot();
argument.setMultiRoots(false);
}
TreeVertex root = null;
Vector roots = argument.getTree().getRoots();
if (roots.size() > 1) {
if (argument.getDummyRoot() == null) {
argument.addDummyRoot(roots);
}
root = argument.getDummyRoot();
} else if (roots.size() == 1) {
root = (TreeVertex) roots.firstElement();
}
// if root == null, the entire tree has been erased,
// so call emptyTree() to clean things up and
// clear the display
if (root == null) {
argument.emptyTree(false);
} else {
calcTreeShape(root);
}
if (doRepaint) {
repaint();
}
/*
if (displayFrame.getMainDiagramPanel() == this)
{
searchFrame.updateDisplays(false);
}
*/
}
@Override
public void run() {
// TODO Auto-generated method stub
while (true) {
try {
Thread.sleep(100);
} catch (Exception e) {
// TODO: handle exception
}
// 判断每一粒子弹和每一辆敌人的坦克都是否有重合（击中）
for (int i = 0; i < hero.bombs.size(); i++) {
// 取出每个子弹
Bomb myBomb = hero.bombs.get(i);
// 子弹必须得存活才有判断的意义
if (myBomb.isLive) {
for (int j = 0; j < ets.size(); j++) {
// 取出每辆坦克
EnemyTank et = ets.get(j);
if (et.isLive) {
this.isHit(myBomb, et);
}
}
}
}
this.repaint();
}
}
public void viewChange(View new_view) {
Vector mbrship;
if (new_view != null && (mbrship = new_view.getMembers()) != null) {
tree._put(SEP, "members", mbrship);
tree._put(SEP, "coordinator", mbrship.firstElement());
}
}
/** Adds a figure to the list of figures. Initializes the the figure's container. */
public Figure add(Figure figure) {
if (!fFigures.contains(figure)) {
fFigures.addElement(figure);
figure.addToContainer(this);
}
return figure;
}
/** Brings a figure to the front. */
public synchronized void bringToFront(Figure figure) {
if (fFigures.contains(figure)) {
fFigures.removeElement(figure);
fFigures.addElement(figure);
figure.changed();
}
}
/**
* Notify any DialogListeners of changes having occurred If a listener returns false, do not call
* further listeners and disable the OK button and preview Checkbox (if it exists). For
* PlugInFilters, this ensures that the PlugInFilterRunner, which listens as the last one, is not
* called if the PlugInFilter has detected invalid parameters. Thus, unnecessary calling the
* run(ip) method of the PlugInFilter for preview is avoided in that case.
*/
private void notifyListeners(AWTEvent e) {
if (dialogListeners == null) return;
boolean everythingOk = true;
for (int i = 0; everythingOk && i < dialogListeners.size(); i++)
try {
resetCounters();
if (!((DialogListener) dialogListeners.elementAt(i)).dialogItemChanged(this, e))
everythingOk = false;
} // disable further listeners if false (invalid parameters) returned
catch (Exception err) { // for exceptions, don't cover the input by a window but
IJ.beep(); // show them at in the "Log"
IJ.log(
"ERROR: "
+ err
+ "\nin DialogListener of "
+ dialogListeners.elementAt(i)
+ "\nat "
+ (err.getStackTrace()[0])
+ "\nfrom "
+ (err.getStackTrace()[1])); // requires Java 1.4
}
boolean workaroundOSXbug = IJ.isMacOSX() && okay != null && !okay.isEnabled() && everythingOk;
if (previewCheckbox != null) previewCheckbox.setEnabled(everythingOk);
if (okay != null) okay.setEnabled(everythingOk);
if (workaroundOSXbug) repaint(); // OSX 10.4 bug delays update of enabled until the next input
}
public Buffer getUV() {
float v[] = new float[uv.size()];
for (int i = 0; i < uv.size(); i++) {
v[i] = (uv.elementAt(i)).floatValue();
}
return FloatBuffer.wrap(v);
}
public Buffer getNormals() {
float v[] = new float[normals.size()];
for (int i = 0; i < normals.size(); i++) {
v[i] = (normals.elementAt(i)).floatValue();
}
return FloatBuffer.wrap(v);
}
/** Calculate the rectangle occupied by the data */
protected Rectangle getDataRectangle(Graphics g, Rectangle r) {
Axis a;
int waxis;
int x = r.x;
int y = r.y;
int width = r.width;
int height = r.height;
for (int i = 0; i < axis.size(); i++) {
a = ((Axis) axis.elementAt(i));
waxis = a.getAxisWidth(g);
switch (a.getAxisPos()) {
case Axis.LEFT:
x += waxis;
width -= waxis;
break;
case Axis.RIGHT:
width -= waxis;
break;
case Axis.TOP:
y += waxis;
height -= waxis;
break;
case Axis.BOTTOM:
height -= waxis;
break;
}
}
return new Rectangle(x, y, width, height);
}
public void actionPerformed(java.awt.event.ActionEvent arg0) {
if (JTable1.getSelectedRowCount() != 1) {
Utilities.errorMessage(resourceBundle.getString("Please select a view to edit"));
return;
}
views = new ViewsWizard(ViewConfig.this, applet);
views.setSecurityModel(model);
Point p = JLabel1.getLocationOnScreen();
views.setLocation(p);
views.init();
views.setState(false);
Vector viewvec = model.getAllViews();
for (int i = 0; i < viewvec.size(); i++) {
String viewname = ((AuthViewWithOperations) viewvec.elementAt(i)).getAuthorizedViewName();
if (JTable1.getValueAt(JTable1.getSelectedRow(), 0).toString().equals(viewname)) {
views.setValues((AuthViewWithOperations) viewvec.elementAt(i));
}
}
disableButtons();
views.setVisible(true);
}
public void changeDictionary(String strLanguage) {
// Change dictionary
MonitorDictionary.setCurrentLanguage(strLanguage);
DefaultDictionary.setCurrentLanguage(strLanguage);
ErrorDictionary.setCurrentLanguage(strLanguage);
// Update UI
updateLanguage();
WindowManager.updateLanguage();
int iIndex = mvtLanguage.indexOf(strLanguage);
if (iIndex >= 0) {
JRadioButtonMenuItem mnu = (JRadioButtonMenuItem) mvtLanguageItem.elementAt(iIndex);
mnu.setSelected(true);
}
// Store config
Hashtable prt = null;
try {
prt = Global.loadHashtable(Global.FILE_CONFIG);
} catch (Exception e) {
prt = new Hashtable();
}
prt.put("Language", strLanguage);
try {
Global.storeHashtable(prt, Global.FILE_CONFIG);
} catch (Exception e) {
}
}
public void removeUser(String strChannel) {
Vector vtData = tblUser.getFilteredData();
for (int iIndex = 0; iIndex < vtData.size(); iIndex++) {
Vector vtRow = (Vector) vtData.elementAt(iIndex);
if (vtRow.elementAt(0).equals(strChannel)) tblUser.deleteRow(iIndex);
}
}
public int submit() {
String newName = produktgruppeFormular.nameField.getText();
if (isProdGrAlreadyKnown(newName)) {
// not allowed: changing name to one that is already registered in DB
JOptionPane.showMessageDialog(
this,
"Fehler: Produktgruppe '" + newName + "' bereits vorhanden!",
"Info",
JOptionPane.INFORMATION_MESSAGE);
produktgruppeFormular.nameField.setText("");
return 0;
}
Integer parentProdGrID =
produktgruppeFormular.parentProdGrIDs.get(
produktgruppeFormular.parentProdGrBox.getSelectedIndex());
Vector<Integer> idsNew = produktgruppeFormular.idsOfNewProdGr(parentProdGrID);
Integer topID = idsNew.get(0);
Integer subID = idsNew.get(1);
Integer subsubID = idsNew.get(2);
Integer mwstID =
produktgruppeFormular.mwstIDs.get(produktgruppeFormular.mwstBox.getSelectedIndex());
Integer pfandID =
produktgruppeFormular.pfandIDs.get(produktgruppeFormular.pfandBox.getSelectedIndex());
return insertNewProdGr(topID, subID, subsubID, newName, mwstID, pfandID);
}
public void actionPerformed(ActionEvent evt) {
// 删除原来的JTable(JTable使用scrollPane来包装)
if (scrollPane != null) {
jf.remove(scrollPane);
}
try (
// 根据用户输入的SQL执行查询
ResultSet rs = stmt.executeQuery(sqlField.getText())) {
// 取出ResultSet的MetaData
ResultSetMetaData rsmd = rs.getMetaData();
Vector<String> columnNames = new Vector<>();
Vector<Vector<String>> data = new Vector<>();
// 把ResultSet的所有列名添加到Vector里
for (int i = 0; i < rsmd.getColumnCount(); i++) {
columnNames.add(rsmd.getColumnName(i + 1));
}
// 把ResultSet的所有记录添加到Vector里
while (rs.next()) {
Vector<String> v = new Vector<>();
for (int i = 0; i < rsmd.getColumnCount(); i++) {
v.add(rs.getString(i + 1));
}
data.add(v);
}
// 创建新的JTable
JTable table = new JTable(data, columnNames);
scrollPane = new JScrollPane(table);
// 添加新的Table
jf.add(scrollPane);
// 更新主窗口
jf.validate();
} catch (Exception e) {
e.printStackTrace();
}
}
/** Returns the contents of the next text field. */
public String getNextString() {
String theText;
if (stringField == null) return "";
TextField tf = (TextField) (stringField.elementAt(sfIndex));
theText = tf.getText();
if (macro) {
String label = (String) labels.get((Object) tf);
theText = Macro.getValue(macroOptions, label, theText);
if (theText != null
&& (theText.startsWith("&") || label.toLowerCase(Locale.US).startsWith(theText))) {
// Is the value a macro variable?
if (theText.startsWith("&")) theText = theText.substring(1);
Interpreter interp = Interpreter.getInstance();
String s = interp != null ? interp.getVariableAsString(theText) : null;
if (s != null) theText = s;
}
}
if (recorderOn) {
String s = theText;
if (s != null
&& s.length() >= 3
&& Character.isLetter(s.charAt(0))
&& s.charAt(1) == ':'
&& s.charAt(2) == '\\')
s = s.replaceAll("\\\\", "\\\\\\\\"); // replace "\" with "\\" in Windows file paths
if (!smartRecording || !s.equals((String) defaultStrings.elementAt(sfIndex)))
recordOption(tf, s);
else if (Recorder.getCommandOptions() == null) Recorder.recordOption(" ");
}
sfIndex++;
return theText;
}
/**
* Adds a popup menu.
*
* @param label the label
* @param items the menu items
* @param defaultItem the menu item initially selected
*/
public void addChoice(String label, String[] items, String defaultItem) {
String label2 = label;
if (label2.indexOf('_') != -1) label2 = label2.replace('_', ' ');
Label theLabel = makeLabel(label2);
c.gridx = 0;
c.gridy = y;
c.anchor = GridBagConstraints.EAST;
c.gridwidth = 1;
if (choice == null) {
choice = new Vector(4);
defaultChoiceIndexes = new Vector(4);
c.insets = getInsets(5, 0, 5, 0);
} else c.insets = getInsets(0, 0, 5, 0);
grid.setConstraints(theLabel, c);
add(theLabel);
Choice thisChoice = new Choice();
thisChoice.addKeyListener(this);
thisChoice.addItemListener(this);
for (int i = 0; i < items.length; i++) thisChoice.addItem(items[i]);
if (defaultItem != null) thisChoice.select(defaultItem);
else thisChoice.select(0);
c.gridx = 1;
c.gridy = y;
c.anchor = GridBagConstraints.WEST;
grid.setConstraints(thisChoice, c);
add(thisChoice);
choice.addElement(thisChoice);
int index = thisChoice.getSelectedIndex();
defaultChoiceIndexes.addElement(new Integer(index));
if (Recorder.record || macro) saveLabel(thisChoice, label);
y++;
}
/**
* Adds a radio button group.
*
* @param label group label (or null)
* @param items radio button labels
* @param rows number of rows
* @param columns number of columns
* @param defaultItem button initially selected
*/
public void addRadioButtonGroup(
String label, String[] items, int rows, int columns, String defaultItem) {
Panel panel = new Panel();
int n = items.length;
panel.setLayout(new GridLayout(rows, columns, 0, 0));
CheckboxGroup cg = new CheckboxGroup();
for (int i = 0; i < n; i++) {
Checkbox cb = new Checkbox(items[i], cg, items[i].equals(defaultItem));
cb.addItemListener(this);
panel.add(cb);
}
if (radioButtonGroups == null) radioButtonGroups = new Vector();
radioButtonGroups.addElement(cg);
Insets insets = getInsets(5, 10, 0, 0);
if (label == null || label.equals("")) {
label = "rbg" + radioButtonGroups.size();
insets.top += 5;
} else {
setInsets(10, insets.left, 0);
addMessage(label);
insets.top = 2;
insets.left += 10;
}
c.gridx = 0;
c.gridy = y;
c.gridwidth = 2;
c.anchor = GridBagConstraints.WEST;
c.insets = new Insets(insets.top, insets.left, 0, 0);
grid.setConstraints(panel, c);
add(panel);
if (Recorder.record || macro) saveLabel(cg, label);
y++;
}
/**
* Removes a figure from the composite.
*
* @see #removeAll
*/
public Figure remove(Figure figure) {
if (fFigures.contains(figure)) {
figure.removeFromContainer(this);
fFigures.removeElement(figure);
}
return figure;
}
public void paintComponent(Graphics g) {
g.setColor(new Color(96, 96, 96));
image.paintIcon(this, g, 1, 1);
FontMetrics fm = g.getFontMetrics();
String[] args = {jEdit.getVersion()};
String version = jEdit.getProperty("about.version", args);
g.drawString(version, (getWidth() - fm.stringWidth(version)) / 2, getHeight() - 5);
g = g.create((getWidth() - maxWidth) / 2, TOP, maxWidth, getHeight() - TOP - BOTTOM);
int height = fm.getHeight();
int firstLine = scrollPosition / height;
int firstLineOffset = height - scrollPosition % height;
int lines = (getHeight() - TOP - BOTTOM) / height;
int y = firstLineOffset;
for (int i = 0; i <= lines; i++) {
if (i + firstLine >= 0 && i + firstLine < text.size()) {
String line = (String) text.get(i + firstLine);
g.drawString(line, (maxWidth - fm.stringWidth(line)) / 2, y);
}
y += fm.getHeight();
}
}
public Properties internalToProperties() {
Properties props = new Properties();
StringBuffer st = new StringBuffer();
st.append(" ");
for (int i = 0; i < visibleViewIds.size(); i++) {
st.append(" " + Constants.cpNames[((Integer) visibleViewIds.elementAt(i)).intValue()]);
}
// System.out.println(" visibleViewIds: " + st.toString());
props.setProperty("ndedit.visibleViewIds", st.toString());
props.setProperty("ndedit.cutPanelSizeW", (new Integer(cutPanelSize.width).toString()));
props.setProperty("ndedit.cutPanelSizeH", (new Integer(cutPanelSize.height).toString()));
props.setProperty("ndedit.cutPanelWMin", (new Integer(cutPanelMinSize.width).toString()));
props.setProperty("ndedit.cutPanelHMin", (new Integer(cutPanelMinSize.height).toString()));
props.setProperty("ndedit.cutPanelWMax", (new Integer(cutPanelMaxSize.width).toString()));
props.setProperty("ndedit.cutPanelHMax", (new Integer(cutPanelMaxSize.height).toString()));
props.setProperty("ndedit.lonReference", (new Double(lonReference).toString()));
props.setProperty("ndedit.geoDisplayFormat", (new Integer(geoDisplayFormat).toString()));
props.setProperty("ndedit.timeDisplayFormat", (new Integer(timeDisplayFormat).toString()));
props.setProperty("ndedit.timeAxisMode", (new Integer(timeAxisMode).toString()));
props.setProperty("ndedit.timeAxisReference", (new Double(timeAxisReference).toString()));
String dpa = new Boolean(displayPanelAxes).toString();
props.setProperty("ndedit.displayPanelAxes", dpa);
dpa = new Boolean(independentHandles).toString();
props.setProperty("ndedit.independentHandles", dpa);
return props;
}
public void actionPerformed(java.awt.event.ActionEvent arg0) {
if (JTable1.getSelectedRowCount() != 1) {
Utilities.errorMessage(resourceBundle.getString("Please select a view to delete"));
return;
}
if (JOptionPane.showConfirmDialog(
null,
resourceBundle.getString("Are you sure you want to delete the selected view "),
resourceBundle.getString("Warning!"),
JOptionPane.YES_NO_OPTION,
JOptionPane.WARNING_MESSAGE,
null)
== JOptionPane.NO_OPTION) return;
Vector viewvec = model.getAllViews();
for (int i = 0; i < viewvec.size(); i++) {
String viewname = ((AuthViewWithOperations) viewvec.elementAt(i)).getAuthorizedViewName();
if (JTable1.getValueAt(JTable1.getSelectedRow(), 0).toString().equals(viewname)) {
AuthViewWithOperations avop = (AuthViewWithOperations) viewvec.elementAt(i);
model.delViewOp(
avop.getAuthorizedViewName(), avop.getViewProperties(), avop.getOperations());
}
}
disableButtons();
}
public String toString() {
StringBuffer st = new StringBuffer();
st.append(" Cut Panels: ");
for (int i = 0; i < visibleViewIds.size(); i++) {
st.append(" " + Constants.cpNames[((Integer) visibleViewIds.elementAt(i)).intValue()]);
}
st.append(" \nCutPanelSize: ");
st.append(cutPanelSize);
st.append(" \nlonReference: ");
st.append(lonReference);
st.append(" \ngeoDisplayFormat: ");
st.append(geoDisplayFormat);
st.append(" \nuseCenterWidthOrMinMax: ");
st.append(useCenterWidthOrMinMax);
st.append(" \ntimeDisplayFormat: ");
st.append(timeDisplayFormat);
st.append(" \ntimeAxisMode: ");
st.append(timeAxisMode);
st.append(" \ntimeAxisReference: ");
st.append(timeAxisReference);
st.append(" \ntimeSinceUnits: ");
st.append(timeSinceUnits);
st.append(" \ndisplayPanelAxes: ");
st.append(displayPanelAxes);
st.append(" \nindependentHandles: ");
st.append(independentHandles);
return st.toString();
}
public Object clone() {
FigForkState figClone = (FigForkState) super.clone();
Vector v = figClone.getFigs();
figClone._bigPort = (FigRect) v.elementAt(0);
figClone._head = (FigRect) v.elementAt(1);
return figClone;
}
// 判断坦克是否被击中
public void isHit(Bomb bomb, EnemyTank et) {
// 敌人的坦克有四个方向，每个方向的坐标不同
switch (et.getDirection()) {
// 朝上和朝下效果一样
case 0:
case 2:
// 子弹的坐标和坦克的坐标重合即为击中
if (bomb.x > et.getX()
&& bomb.x < et.getX() + 25
&& bomb.y < et.getY() + 30
&& bomb.y > et.getY()) {
// 子弹死亡，敌人坦克死亡
bomb.isLive = false;
et.isLive = false;
BaoZha bz = new BaoZha(et.getX(), et.getY());
baozhas.add(bz);
}
// 敌人坦克朝左右两边
case 1:
case 3:
if (bomb.x > et.getX()
&& bomb.x < et.getX() + 30
&& bomb.y > et.getY()
&& bomb.y < et.getY() + 25) {
// 子弹死亡，敌人坦克死亡
bomb.isLive = false;
et.isLive = false;
BaoZha bz = new BaoZha(et.getX(), et.getY());
baozhas.add(bz);
}
}
}
public Buffer getVertices() {
float v[] = new float[points.size()];
for (int i = 0; i < points.size(); i++) {
v[i] = (points.elementAt(i)).floatValue();
}
return FloatBuffer.wrap(v);
}
protected void addPage(String _typeOfPage, String _name, String _code, boolean _enabled) {
cardLayout.show(finalPanel, "TabbedPanel");
_name = getUniqueName(_name);
Editor page = createPage(_typeOfPage, _name, _code);
page.setFont(myFont);
page.setColor(myColor);
int index = tabbedPanel.getSelectedIndex();
if (index == -1) {
pageList.addElement(page);
if (tabbedPanel.getTabCount() == 0) {
tabbedPanel.addTab(
page.getName(),
null,
page.getComponent(),
tooltip); // This causes an exception sometimes
} else {
tabbedPanel.insertTab(
page.getName(), null, page.getComponent(), tooltip, tabbedPanel.getTabCount());
}
index = 0;
} else {
index++;
pageList.insertElementAt(page, index);
tabbedPanel.insertTab(page.getName(), null, page.getComponent(), tooltip, index);
}
tabbedPanel.setSelectedComponent(page.getComponent());
page.setActive(_enabled);
if (!_enabled) tabbedPanel.setTitleAt(index, page.getName() + " (D)");
updatePageCounterField(pageList.size());
// tabbedPanel.validate(); This hangs the computer when reading a file at start-up !!!???
tabbedPanel.repaint();
changed = true;
}
// keyboard discovery code
private void _mapKey(char charCode, int keyindex, boolean shift, boolean altgraph) {
log("_mapKey: " + charCode);
// if character is not in map, add it
if (!charMap.containsKey(new Integer(charCode))) {
log("Notified: " + (char) charCode);
KeyEvent event =
new KeyEvent(
applet(),
0,
0,
(shift ? KeyEvent.SHIFT_MASK : 0) + (altgraph ? KeyEvent.ALT_GRAPH_MASK : 0),
((Integer) vkKeys.get(keyindex)).intValue(),
(char) charCode);
charMap.put(new Integer(charCode), event);
log("Mapped char " + (char) charCode + " to KeyEvent " + event);
if (((char) charCode) >= 'a' && ((char) charCode) <= 'z') {
// put shifted version of a-z in automatically
int uppercharCode = (int) Character.toUpperCase((char) charCode);
event =
new KeyEvent(
applet(),
0,
0,
KeyEvent.SHIFT_MASK + (altgraph ? KeyEvent.ALT_GRAPH_MASK : 0),
((Integer) vkKeys.get(keyindex)).intValue(),
(char) uppercharCode);
charMap.put(new Integer(uppercharCode), event);
log("Mapped char " + (char) uppercharCode + " to KeyEvent " + event);
}
}
}
/** Returns the index of the selected item in the next popup menu. */
public int getNextChoiceIndex() {
if (choice == null) return -1;
Choice thisChoice = (Choice) (choice.elementAt(choiceIndex));
int index = thisChoice.getSelectedIndex();
if (macro) {
String label = (String) labels.get((Object) thisChoice);
String oldItem = thisChoice.getSelectedItem();
int oldIndex = thisChoice.getSelectedIndex();
String item = Macro.getValue(macroOptions, label, oldItem);
if (item != null && item.startsWith("&")) // value is macro variable
item = getChoiceVariable(item);
thisChoice.select(item);
index = thisChoice.getSelectedIndex();
if (index == oldIndex && !item.equals(oldItem)) {
// is value a macro variable?
Interpreter interp = Interpreter.getInstance();
String s = interp != null ? interp.getStringVariable(item) : null;
if (s == null)
IJ.error(getTitle(), "\"" + item + "\" is not a valid choice for \"" + label + "\"");
else item = s;
}
}
if (recorderOn) {
int defaultIndex = ((Integer) (defaultChoiceIndexes.elementAt(choiceIndex))).intValue();
if (!(smartRecording && index == defaultIndex)) {
String item = thisChoice.getSelectedItem();
if (!(item.equals("*None*") && getTitle().equals("Merge Channels")))
recordOption(thisChoice, thisChoice.getSelectedItem());
}
}
choiceIndex++;
return index;
}
/** Sends a figure to the back of the drawing. */
public synchronized void sendToBack(Figure figure) {
if (fFigures.contains(figure)) {
fFigures.removeElement(figure);
fFigures.insertElementAt(figure, 0);
figure.changed();
}
}
/**
* Method that surrounds whole Arena with 4 rectangles, one for each side of Arena, that blocks
* objects in Arena from falling out of it. The walls are placed outside the Arena so that they
* won't reduce the space in Arena with their bodies.
*
* @param thickness Width of the walls.
*/
private void encloseWithWalls(int thickness) {
Fixed northWall =
(Fixed)
ArenaPartsGenerator.createPart(
new Rectangle(0, -thickness, screenWidth, thickness), "FixedObstacle", 1, this);
Fixed southWall =
(Fixed)
ArenaPartsGenerator.createPart(
new Rectangle(0, screenHeight, screenWidth, thickness), "FixedObstacle", 1, this);
Fixed eastWall =
(Fixed)
ArenaPartsGenerator.createPart(
new Rectangle(screenWidth, 0, thickness, screenHeight), "FixedObstacle", 1, this);
Fixed westWall =
(Fixed)
ArenaPartsGenerator.createPart(
new Rectangle(-thickness, 0, thickness, screenHeight), "FixedObstacle", 1, this);
walls.add(northWall);
walls.add(southWall);
walls.add(eastWall);
walls.add(westWall);
world.add(northWall.getBody());
world.add(southWall.getBody());
world.add(eastWall.getBody());
world.add(westWall.getBody());
isEnclosedWithWalls = true;
}