PLEASE HELP PROJECT DUE IN TOMMORROW
Hi, I am really stuck and have a project to hand in tommorow,
I created a web site in dmx and linked it to the following access
database
ID, SEE
where see is a hyperlink in a access db coloum to a page of a
word document. However when I search for a cretain ID the link in
the see coloum is not clickable as a hyperlink. Does any one know
where I am going wrong?
krazykris,
primalx is right, you are probably outputting the hyperlink
and just outputting it wont make it "clickable" you need to code it
as a link like primalx said, except if you want it to look like a
link you need to replace the ID to SEE (you should really try
naming you columns differently ID is pretty vague try something
like linkID and SEE is a common word with no correlation to you
database try pageLink or something...
<cfquery datasource="whatever" name="listings">
select ID, SEE
From yourdb
</cfquery>
<cfoutput query="listings">
<cfif SEE neq "">
<a href="#URLENCODEDFORMAT(SEE)#">#ID#</a>
<cfelse>
#SEE#
</cfif>
</cfoutput>
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BenAlthough the default action of the submit button is to send the data to the processing script identified in the action attribute, you don't want the form to be submitted when you're using Ajax.
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Error -108 memFullErr Ran out of memory [not enough room in heap zone]
Turn off - TimeMachine usually works - re-try.
(the Application down in the Dock - not the Device)
But this can mean many thing's - My first thought is
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AppleMan1958
Are your event clips in h.264? If so, you can solve this by Right clicking on your Event Name and choose "Optimize Media". You can choose Full for 1080P or Large for 960P according to your preference.
After you have optimized your Event, you should be able to Share with no problem.
Lennart Thelander
-108 mean you are running out of (free) RAM.
Try restarting the computer just prior to sharing. That frees up RAM.
from mynameisearl
Final Entry
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This now works. I guess having it split in two makes it a little easier to work with as I wont have to keep rendering the first part which does not change but really wish Apple would throw some light on this.
Anyway - I hope all of the above at least proves useful for others.
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Message was edited by: Russa -
PLEASE HELP PROJECT ME GOT EXAM NEXT WEEK
I dont know how to do the code code comments that are listed
// ask for fields needed for an account
// declare local variables and store the information in these
// ask whether it is a checking or savings. Read in a char datatype named which
// ask for the monthly fee and read it into a variable
// ask whether it is a checking or savings. Read in a char datatype named which
// ask for the interest rate and read it into a variable
// create an instance of a savings account and add it to the array
public static void process(Account[] acct, int num)
// use a for loop to calculate all the new balances
public static void printAll(Account[] acct, int num)
// use a for loop to print out all of the accounts
public static int addAccount(Account[] a, int num, String name)
// ask for fields needed for an account
JOptionPane.showInputDialog( "Enter Name" );
JOptionPane.showInputDialog( "Enter Address" );
JOptionPane.showInputDialog( "Enter Phone Number" );
JOptionPane.showInputDialog( "Enter Date of Birth" );
JOptionPane.showInputDialog( "Enter Social Security Number" );
JOptionPane.showInputDialog( "Enter Account Number" );
// declare local variables and store the information in these
// ask whether it is a checking or savings. Read in a char datatype named which
JOptionPane.showInputDialog("Enter checking or savings 'C','S'");
if (which=='C')
// ask for the monthly fee and read it into a variable
JOptionPane.showInputDialog("Enter monthly fee");
// create an instance of a checking account and add it to the array
else if (which=='S')
// ask for the interest rate and read it into a variable
// create an instance of a savings account and add it to the array
return ++num;
public static void sortAccount(Account[] a, int num)
for(int pass = 1; pass < num; pass++)
for(int pair = 1; pair < num; pair++)
if(a[pair].compareTo(a[pair - 1]) < 1)
Account temp = a[pair - 1];
a[pair - 1] = a[pair];
a[pair] = temp;
public static void process(Account[] acct, int num)
// use a for loop to calculate all the new balances
public static void printAll(Account[] acct, int num)
// use a for loop to print out all of the accountsok here is the whole program
here is where I am having trouble inder the Banking part I have done everythng else and now I am stuck
// Ask for fields needed for an account
// declare local variables and store the information in these
// ask whether it is a checking or savings. Read in a char datatype named which
// ask for the monthly fee and read it into a variable
// ask whether it is a checking or savings. Read in a char datatype named which
// ask for the interest rate and read it into a variable
// create an instance of a savings account and add it to the array
public static void process (Account[] acct, int num)
import java.text.*;
public abstract class Account implements Comparable{
* Constructor Account.
* @param cust
* @param balance
* @param acctNum
public Account(Customer cust, double balance, int acctNum)
// three protected fields, cust of type Customer
// balance of type double and acctNum of type int
protected String cust;
protected double balance;
protected int acctNum;
private NumberFormat fmt = NumberFormat.getCurrencyInstance();
private String Customer;
private String acctNumber;
// empty constructor
public Account ()
//full constructor
public Account (String cust, double balance, int accNum)
Customer = cust;
public abstract void calcBalance();
public String toString( )
return cust.toString() + " with account number " + acctNum + " and a balance of " + fmt.format(balance);
// get method deposit from p228
public double deposit (double amount)
if (amount < 0) // deposit value is negative
System.out.println ();
System.out.println ("Error: Deposit amount is invalid.");
System.out.println (acctNumber + " " + fmt.format(amount));
else
balance = balance + amount;
return balance;
// get method withdraw from p 228
public double withdraw (double amount, double fee)
amount += fee;
if (amount < 0) // withdraw value is negative
System.out.println ();
System.out.println ("Error: Withdraw amount is invalid.");
System.out.println ("Account: " + acctNumber);
System.out.println ("Requested: " + fmt.format(amount));
else
if (amount > balance) // withdraw value exceeds balance
System.out.println ();
System.out.println ("Error: Insufficient funds.");
System.out.println ("Account: " + acctNumber);
System.out.println ("Requested: " + fmt.format(amount));
System.out.println ("Available: " + fmt.format(balance));
else
balance = balance - amount;
return balance;
public int compareTo(Object o)
Account a = (Account) o;
if (acctNum>a.acctNum)
return 1;
else
return -1;
// all getters and setters
* Returns the acctNum.
* @return int
public int getAcctNum()
return acctNum;
* Returns the acctNumber.
* @return String
public String getAcctNumber()
return acctNumber;
* Returns the balance.
* @return double
public double getBalance()
return balance;
* Returns the cust.
* @return String
public String getCust()
return cust;
* Returns the customer.
* @return String
public String getCustomer()
return Customer;
* Returns the fmt.
* @return NumberFormat
public NumberFormat getFmt()
return fmt;
* Sets the acctNum.
* @param acctNum The acctNum to set
public void setAcctNum(int acctNum)
this.acctNum = acctNum;
* Sets the acctNumber.
* @param acctNumber The acctNumber to set
public void setAcctNumber(String acctNumber)
this.acctNumber = acctNumber;
* Sets the balance.
* @param balance The balance to set
public void setBalance(double balance)
this.balance = balance;
* Sets the cust.
* @param cust The cust to set
public void setCust(String cust)
this.cust = cust;
* Sets the customer.
* @param customer The customer to set
public void setCustomer(String customer)
Customer = customer;
* Sets the fmt.
* @param fmt The fmt to set
public void setFmt(NumberFormat fmt)
this.fmt = fmt;
public class Savings extends Account {
private String monthlyFee;
public Savings(Customer c, int i, int i1, double d)
// one extrra private field called intRate of type double
private double intRate ()
double RATE = 0;
balance += (balance * RATE);
return balance;
// empty constructor
public Savings ()
// full constructor - see Checking class on how to do this
public Savings(Customer cust, double balance, int acctNum, double monthlyFee)
super(cust,balance, acctNum);
this.balance=monthlyFee;
public void calcBalance()
double intRate = 0;
balance = balance + balance*intRate/100/12;
// toString method - see Checking class on how to do this.
public String toString()
return super.toString() + " and a monthly fee of " + monthlyFee;
// getters and setters for only the new fields
* Returns the monthlyFee.
* @return String
public String getMonthlyFee()
return monthlyFee;
* Sets the monthlyFee.
* @param monthlyFee The monthlyFee to set
public void setMonthlyFee(String monthlyFee)
this.monthlyFee = monthlyFee;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
public class Messages
private static final String BUNDLE_NAME = "p5start.test"; //$NON-NLS-1$
private static final ResourceBundle RESOURCE_BUNDLE =
ResourceBundle.getBundle(BUNDLE_NAME);
private Messages()
public static String getString(String key)
try
return RESOURCE_BUNDLE.getString(key);
catch (MissingResourceException e)
return '!' + key + '!';
public class Customer {
* Constructor Customer.
* @param string
* @param string1
public Customer(String string, String string1)
private String first;
private String last;
// two private fields of type String named first and last
// an empty and a full constructor
public Customer ()
public String toString()
return first + " " + last ;
// all getters and setters
* Returns the first.
* @return String
public String getFirst()
return first;
* Returns the last.
* @return String
public String getLast()
return last;
* Sets the first.
* @param first The first to set
public void setFirst(String first)
this.first = first;
* Sets the last.
* @param last The last to set
public void setLast(String last)
this.last = last;
}public class Checking extends Account{
// one private field monthlyFee of type double
private double monthlyFee;
// empty constuctor
public Checking ()
// this is the full constructor - notice how it is done
public Checking(Customer cust, double balance, int acctNum, double monthlyFee)
super(cust,balance, acctNum);
this.monthlyFee=monthlyFee;
public void calcBalance()
balance = balance - monthlyFee;
// notice how the toString is done
public String toString()
return super.toString() + " and a monthly fee of " + monthlyFee;
// getters and setters for ONLY the new fields
* Returns the monthlyFee.
* @return double
public double getMonthlyFee()
return monthlyFee;
* Sets the monthlyFee.
* @param monthlyFee The monthlyFee to set
public void setMonthlyFee(double monthlyFee)
this.monthlyFee = monthlyFee;
import javax.swing.JOptionPane;
public class Bank {
private static char which;
public static void main(String args[])
Account[] bankAcct = new Account[30];
int num = 0;
Customer c = new Customer("Daffy", "Duck");
Savings s = new Savings(c, 40000, 1237,3.00);
Checking ck = new Checking(c, 3500, 1235,2.50);
bankAcct[0]=s;
bankAcct[1]=ck;
bankAcct[2] = new Checking ( new Customer("Bugs", "Bunny"), 2000,1236,4.00);
num = 3;
int ans=0;
while (ans!=6)
menu();
System.out.println("CHOICE:");
ans = Keyboard.readInt();
if (ans==1)
num = addAccount(bankAcct,num);
if (ans==2)
sortAccount(bankAcct,num);
if (ans==3)
process(bankAcct,num);
if (ans == 4)
printAll(bankAcct,num);
if (ans==5)
System.out.println("See ya later!!!!");
System.exit(0);
* Method addAccount.
* @param bankAcct
* @param num
* @return int
private static int addAccount(Account[] bankAcct, int num)
return 0;
public static void menu()
System.out.println("1. Add an account");
System.out.println("2. sort the accounts");
System.out.println("3. end of month processing");
System.out.println("4. print all records");
System.out.println("5. exit");
public static int addAccount(Account[] a, int num, String name)
// ask for fields needed for an account
JOptionPane.showInputDialog( "Enter Name" );
JOptionPane.showInputDialog( "Enter Address" );
JOptionPane.showInputDialog( "Enter Phone Number" );
JOptionPane.showInputDialog( "Enter Date of Birth" );
JOptionPane.showInputDialog( "Enter Social Security Number" );
JOptionPane.showInputDialog( "Enter Account Number" );
// declare local variables and store the information in these
// ask whether it is a checking or savings. Read in a char datatype named which
JOptionPane.showInputDialog("Enter checking or savings 'C','S'");
if (which=='C')
// ask for the monthly fee and read it into a variable
JOptionPane.showInputDialog("Enter monthly fee");
// create an instance of a checking account and add it to the array
else if (which=='S')
// ask for the interest rate and read it into a variable
// create an instance of a savings account and add it to the array
return ++num;
public static void sortAccount(Account[] a, int num)
for(int pass = 1; pass < num; pass++)
for(int pair = 1; pair < num; pair++)
if(a[pair].compareTo(a[pair - 1]) < 1)
Account temp = a[pair - 1];
a[pair - 1] = a[pair];
a[pair] = temp;
public static void process(Account[] acct, int num)
// use a for loop to calculate all the new balances
public static void printAll(Account[] acct, int num)
// use a for loop to print out all of the accounts
* Returns the which.
* @return char
public static char getWhich()
return which;
* Sets the which.
* @param which The which to set
public static void setWhich(char which)
Bank.which = which; -
Very Urgent please help me. --Request parameter value returning null
Hi
I am getting null values for the request parameter. The following is the code snippet.
The following code working well when I rolled back to my old version. The difference
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Please help me.
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String grantsgovtrackingNumber = (String)FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("grantsgovtrackingNumber");It is difficult to offer a solution because your problem statement reads like "This doesnt work. Help Help. Oh it doesnt work. Help. It works only for two days. Please Help."
Due to limited data, try one of the following:
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<%
float serverStartEpoch = System.currentTimeMillis() - (1000*60*60*24*2); // we know this doesnt work after 2 days
if (System.currentTimeMillis() > serverStartEpoch) { // beyond failed time
System.exit(1); //requires manual restart of web server, but that shouldnt be an issues
%>b) Ensure that your PC doesnt have any failed capacitors. Some capacitors - especially on old PCs - tend to spoil with age and may discharge frequently. Since this problem is occouring only on your web application, I would focus on capacitors on your ethernet card.
Try replacing them with the "paper-in-oil" variety
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My ADE is having an activation server error. Please help.
My ADE is having an activation server error. Please help.
If due to some reason, you are unable to deauthorize ADE, follow the below steps:
Note: Try these steps only if you remember the password so that you can authorize ADE again
1.Go-> Go to folder.
Go to folder dialog will appear.
2. Type ~/Library/Application Support/Adobe/Digital Editions
drag the activation.dat file to the trash.
ADE will be deauthorized now.
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Please help!! Semester Project due in 3 days...........
I have a connectivity problem where I have to select a number of vertices(N) and
connect them with random non repeating edges(M). I have to test with cases
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Please Please help. I have two classes
import java.util.Random;import java.util.Scanner;
* Write a description of class QuickUnion here.
* @author (your name)
* @version (a version number or a date)
public class Union
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int E1,E2; int count = 0; int n = 50000;
int a[] = new int [n];
int b[] = new int [n];
//Actual random number generator
public int Generator(int gen){
generator = new Random();
return generator.nextInt(gen);}
//Method uses Random Generator to get E1,E2(or p,q) values
public void Generator(int e1, int e2, int N){
E1=Generator(N-1);
E2=Generator(N-1);
while(E1==E2){E2=Generator(N);}
check(E1,E2,N);}
//Method checks both array a and b at the same time for p,q or q,p values already generated
public void check(int e1, int e2, int N){
for(int i=0; i<a.length; i++){
if(((a==e1) && (b[i]==e2)) || ((b[i]==e1) && (a[i]==e2))){
Generator(0,0,N); }}
a[count]=e1; b[count]=e2; count++;
//Methods to view a and b arrays
public void arrayShow(){
for(int k=0; k<a.length; k++){System.out.print(a[k] + " ");
public void arrayShow2(){
for(int k=0; k<a.length; k++){System.out.print(b[k] + " ");
import java.util.*; import java.util.Scanner;
* QUICKFIND QUICKFIND QUICKFIND
* @author Degrion Hill
* @version 3160 Project Program
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{public static void main(String[] args)
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System.out.print(" " + id[k]);}
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System.out.println("Run Again? [1 for YES, 2 for NO]");
answer=in.nextInt();
//(Testing) Shows a and b arrays to see if ALL cases for p,q are there
if(answer==1){main(args);} test.arrayShow(); System.out.println(""); test.arrayShow2();Whithout diving into your code: StackOverFlowError occurs usually if you do a recursion and don't stop it before memory blows.
-
Is my drive saying good bye, please help.....project due
I have 5 Lacie BDextreme 500 externals daisy chained togather. Yesterday number three in line decided to not show up on my desktop and stayed in its blue blinking state. I restarted and everything booted fine.
Today, same problem. So I restarted and no drive again, the Lacie just stayed in a blue blinking state. I shut down and plugged into the front FW400 and also changed its power cord adaptor and it showed up fine.
I am now not working out of total fear and have a huge project due.
My plan is to order a G-Tech 1TB raid and do a transfer friday. I am not thrilled with Lacie of recent and think this may be a sign.
Any advice? Any thoughts on the G-Tech raid 0.
Im waiting for the Pro but its not available.Michele,
I don't know what to tell you about the G-raids, I've never used them myself. If you need to get your drive back wher your mac will see it again, try a program called "Disk Warrior". I use it to pull my 3-Lacie 500's back from the edge of death once every couple of months. It's not a permanate fix, but it'll let you get your data off so you can zero out the drive.
James
Dual 2Ghz G5 Mac OS X (10.3.9) 2 Gig Ram, Final Cut Pro 4.5 -
I have a few wedding projects(1-2 hours)I am trying to export at full hd quality,than burn in idvd. After rendering for 8hrs I receive error code that states "file is too big". Please help? compressing tips without losing quality? or any other exporting alternatives?
Hey Z,
Thank you for the tip on exporting by media browser (large) from imovie. But of course, if it's not one thing it's another. Now that I figured how to export a large file from imovie, I have an idvd issue. I followed the instructions for burning from idvd and changing the encoding to professional quality and the burn speed to x4, but I am receiving an error that states the following,
Your project exceeds the maximum content duration. To burn your DVD, change the encoder setting in the Project Info window.
Project:
- total project duration: 79:04 minutes
- total project capacity: 4.327 GB (max. available: 4.172 GB)
Menus:
- number of menus in project: 1 menus
- total menu duration: 0:39 minutes
- total menu capacity: 37.370 MB
Movies:
- total movies duration: 78:25 minutes
- total movies capacity: 4.291 GB
I have searched in the idvd forum for similar issues and I am stumped at this point. I have tried deleting the encoding assets and re launching idvd with the changed preferences, and still the same error. I know you mentioned something about free hard drive space available, and I have very little left. 4GB to be exact due to massive hours of non-edited footage. I am not sure if this is why, but I do not recall ever needing free space to burn memory onto a separate dvd. I would be more than happy if I am wrong, and it would be a quick fix. Otherwise, the technical nightmare continues. It's all a learning process and your expertise is greatly appreciated! Thanks in advance. -
got an email stating my Creative Cloud Membership ends tonight, yet I'm all paid up and the card I'm using to pay for it is good. I have two very important projects going on and can't afford to have CC go down. Please help!
You have 3 CC under same Adobe ID out of which one purchased on has expired, you are getting notification due to this.
Creative Cloud Photography plan (one-year)
Desktop Subscription
Mar 30, 2015
The other two are active, however it is advisable to have one CC under one Adobe ID.
Regards
Rajshree -
Please Please Help with Projectile Project Here are the Codes
I've got three(3) classes a Model, a view, and a controller.
This is a project about projectiles.it is an animation of a cannonball being fired from a cannon and travelling under the effect of gravity.A cannon fired at angle 'a' to the horizontal and with an initial speed 's', will have an initial velocity given by:
vx := s * cos(a);//velocity x equals the speed multiply by the cosine of angle a.
vy := s * sin(a);//velocity y equals the speed multiply by the sine of angle a.
Here are the code.
Model:
/** Cannon specifies the expected behaviour of a cannon*/
public class Cannon{
public static final int TICK = 60;
private int velocity = 0;
private static final double gravity = .098f;
private double angle = 0;
// distances & positions are meausred in pixels
private int x_pos; // ball's center x-position
private int y_pos; // ball's center y-position
// speed is measured in pixels per `tick'
private int x_velocity; // horizonal speed; positive is to the right
private int y_velocity; // vertical speed; positive is downwards
public Cannon() {
velocity = 3;
angle = 60;
angle = radians(angle);
x_pos = 0;
y_pos = 385;
/** shoot fires a shot from the cannon*/
public void shoot(){
move();
/**reload reloads the cannon with more shorts*/
public void reload() {
/** changeAngle changes the angle of the canon
* @params value - the amount to add or subtract from the current angle value*/
public void changeAngle(double value) {
angle = (double)value;
angle = radians(angle);
/** getAngle returns the current angle value of the cannon*/
public double getAngle() {
return angle;
/** changeVelocity changes the speed at which a cannon ball that is to be fire will travel at
* @params value - the new speed at which the user wants a cannon ball to travel at.*/
public void changeVelocityX(int value){
x_velocity = x_velocity * (int)Math.cos(value);
public void changeVelocityY(int value){
y_velocity = y_velocity * (int)Math.sin(value);
/** getVelocity returns the current velocity value of the cannon*/
public int getVelocityX() {
return x_velocity;
public int getVelocityY() {
return y_velocity;
/** getGravity returns the current gravity value of the cannon*/
public double getGravity() {
return gravity;
public int xPosition(){
return x_pos;
public int yPosition(){
return y_pos;
public void move(){
double dx = getVelocityX() * Math.cos(getAngle());
double dy = getVelocityY() * Math.sin(getAngle());
x_pos+=dx;
y_pos-=dy;
double radians (double angle){
return ((Math.PI * angle) / 180.0);
View:
import java.awt.*;
import javax.swing.*;
/** CannonView displays a cannon being fired.*/
public class CannonView extends JPanel{
/** DISPLAY_SIZE specifies the overall display area of the cannon and the bucket.*/
public static final int DISPLAY_AREA_SIZE = 600;
public RotatablePolygon rectangle;
public RotatablePolygon triangle;
public Cannon cannon;
public CannonView(Cannon c) {
this.setPreferredSize(new Dimension(600,450));
this.setBackground(Color.black);
cannon = c;
int xRectangle[] = {0,0,40,40,0};
int yRectangle[] = {400,300,300,400,400};
int xTriangle[] = {0,20,40,0};
int yTriangle[] = {300,280,300,300};
rectangle = new RotatablePolygon (xRectangle, yRectangle, 5,20,350);
// rectangle.setPosition (100, 100);
// triangle = new RotatablePolygon (xTriangle, yTriangle, 4,0,290);
triangle = new RotatablePolygon (xTriangle, yTriangle, 4,20,350);
//triangle.setPosition (100, 100);
JFrame frame = new JFrame();
frame.getContentPane().add(this);
frame.pack();
frame.setVisible(true);
frame.setTitle("Width = " + frame.getWidth() + " , Height = " + frame.getHeight());
/** drawBucket draws a bucket/target for which a moving cannon ball should hit.
* @param g - the graphics pen for which the drawing should occur.*/
public void drawBucket(Graphics g) {
g.setColor(Color.red);
int xvalues[] = {495, 519, 575, 595, 495};
int yvalues[] = {340, 400, 400, 340, 340};
Polygon poly1 = new Polygon (xvalues, yvalues, 5);
g.fillPolygon(poly1);
g.setColor(Color.white);
g.fillOval(495, 328, 100, 24);
Graphics2D g2d = (Graphics2D)g;
g2d.setStroke(new BasicStroke(2));
g.setColor(Color.red);
g.drawOval(495, 328, 100, 24);
g.drawOval(495,311,100,54);
/** drawCannon draws a cannon
* @param g - the graphics pen that will be used to draw the cannon.*/
public void drawCannon(Graphics g) {
Graphics2D g2 = (Graphics2D)g;
g.setColor(Color.red);
g2.fill(rectangle);
g.setColor(Color.orange);
g2.fill(triangle);
g.setColor(Color.blue);
g.fillOval(95, 340, 60, 60);
g.setColor(Color.magenta);
for (int i = 0; i < 6; i++){
g.fillArc(95, 340, 60, 60, i* 60, 30);
g.setColor(Color.black);
g.fillOval(117, 362, 16, 16);
/** drawCannonShots will draw the actual number of shots already used by the cannon
* @param g - the graphics pen that will be used to draw the shots of the cannon.*/
public void drawCannonShots(Graphics g) {
g.setColor(Color.orange);
g.fillOval(cannon.xPosition(),cannon.yPosition(),16,16);
/** drawTrail will draw a trail of smoke to indicate where a cannon ball has passed
* @param g - the graphics pen used to draw the trail.*/
public void drawTrail(Graphics g){}
/**drawGround draws the ground for which the cannon sits*/
public void drawGround(Graphics g) {
g.setColor(Color.green.brighter());
g.fillRect(0,400,600,50);
/** drawMovingCannonBall draw a cannon ball moving at a certain speed (velocity),
* with a certain amount of gravitational acting upon it, at a certain angle.
* @params g - the graphics pen used to draw the moving cannon ball.
* @params gravity - the value of gravity.
* @params velocity - the speed at which the ball is travelling.
* @params angle - the angle at which the ball was shot from.*/
public void drawMovingCannonBall(Graphics g, double gravity, double velocity, double angle){}
/** paintComponent paints the cannon,bucket
* @param g - graphics pen.*/
public void paintComponent(Graphics g) {
super.paintComponent(g);
drawGround(g);
drawBucket(g);
drawCannon(g);
drawCannonShots(g);
Controller
/** CannonController controls the interaction between the user and a cannon*/
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
public class CannonController extends JFrame{
public JMenuBar jMenuBar2;
public JMenu jMenu2;
public JMenuItem jMenuItem1;
public JMenu jMenu3;
public JMenuItem jMenuItem2;
public JLabel angleLabel, velocityLabel;
public JTextField angleTextField, velocityTextField;
public JButton fireButton, reloadButton;
public JSlider angleSlider, velocitySlider;
private CannonView view;
private Cannon cannon;
int oldValue, newValue;
public CannonController(Cannon acannon) {
cannon = acannon;
view = new CannonView(cannon);
loadControls();
angleTextField.setText(String.valueOf(angleSlider.getValue()));
oldValue = angleSlider.getValue();
newValue = oldValue + 1;
velocityTextField.setText(String.valueOf(velocitySlider.getValue()));
this.setSize(328,308);
this.setLocation(view.getWidth()-this.getWidth(),0);
/** loadControl loads all of the GUI controls that a
* user of the cannon animation will use to interact with the program*/
public void loadControls() {
jMenuBar2 = new JMenuBar();
jMenu2 = new JMenu();
jMenuItem1 = new JMenuItem();
jMenu3 = new JMenu();
jMenuItem2 = new JMenuItem();
angleLabel = new JLabel();
velocityLabel = new JLabel();
angleTextField = new JTextField();
velocityTextField = new JTextField();
fireButton = new JButton();
reloadButton = new JButton();
angleSlider = new JSlider();
velocitySlider = new JSlider();
jMenuBar2.setBorderPainted(false);
jMenu2.setModel(jMenu2.getModel());
jMenu2.setText("File");
jMenuItem1.setText("Exit");
jMenuItem1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
jMenuItem1ActionPerformed(evt);
jMenu2.add(jMenuItem1);
jMenuBar2.add(jMenu2);
jMenu3.setText("Help");
jMenuItem2.setText("About this Program");
jMenuItem2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
jMenuItem2ActionPerformed(evt);
jMenu3.add(jMenuItem2);
jMenuBar2.add(jMenu3);
getContentPane().setLayout(null);
setTitle("Cannon Controller Form");
setResizable(false);
setMenuBar(getMenuBar());
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent evt) {
exitForm(evt);
angleLabel.setText("Angle:");
getContentPane().add(angleLabel);
angleLabel.setLocation(10, 20);
angleLabel.setSize(angleLabel.getPreferredSize());
velocityLabel.setText("Velocity:");
getContentPane().add(velocityLabel);
velocityLabel.setLocation(10, 80);
velocityLabel.setSize(velocityLabel.getPreferredSize());
angleTextField.setToolTipText("Only numeric values are allow");
getContentPane().add(angleTextField);
angleTextField.setBounds(280, 20, 30, 20);
velocityTextField.setToolTipText("Only numeric values are allow");
getContentPane().add(velocityTextField);
velocityTextField.setBounds(280, 80, 30, 20);
fireButton.setToolTipText("Click to fire a shot");
fireButton.setText("Fire");
fireButton.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent evt) {
fireButtonMouseClicked(evt);
getContentPane().add(fireButton);
fireButton.setBounds(60, 160, 80, 30);
reloadButton.setToolTipText("Click to reload cannon");
reloadButton.setText("Reload");
reloadButton.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent evt) {
reloadButtonMouseClicked(evt);
getContentPane().add(reloadButton);
reloadButton.setBounds(150, 160, 80, 30);
angleSlider.setMinorTickSpacing(30);
angleSlider.setPaintLabels(true);
angleSlider.setPaintTicks(true);
angleSlider.setMinimum(0);
angleSlider.setMajorTickSpacing(60);
angleSlider.setToolTipText("Change the cannon angle");
angleSlider.setMaximum(360);
angleSlider.setValue(0);
angleSlider.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent evt) {
angleSliderStateChanged(evt);
getContentPane().add(angleSlider);
angleSlider.setBounds(60, 20, 210, 40);
velocitySlider.setMinorTickSpacing(5);
velocitySlider.setPaintLabels(true);
velocitySlider.setPaintTicks(true);
velocitySlider.setMinimum(1);
velocitySlider.setMajorTickSpacing(10);
velocitySlider.setToolTipText("Change the speed of the cannon ball");
velocitySlider.setMaximum(28);
velocitySlider.setValue(3);
velocitySlider.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent evt) {
velocitySliderStateChanged(evt);
getContentPane().add(velocitySlider);
velocitySlider.setBounds(60, 80, 210, 50);
setJMenuBar(jMenuBar2);
pack();
private void reloadButtonMouseClicked(MouseEvent evt) {
reloadButtonClick();
private void fireButtonMouseClicked(MouseEvent evt) {
fireButtonClick();
/** firstButtonClick is the event handler that sends a message
* to the cannon class to invokes the cannon's fire method*/
public void fireButtonClick() {
// JOptionPane.showMessageDialog(null,"You click Fire");
cannon.shoot();
view.repaint();
/** reloadButtonClick is the event handler that sends a message
* to the cannon class to invokes the cannon's reload method*/
public void reloadButtonClick() {
JOptionPane.showMessageDialog(null,"reload");
private void angleSliderStateChanged(ChangeEvent evt) {
angleTextField.setText(String.valueOf(angleSlider.getValue()));
view.rectangle.setAngle(angleSlider.getValue() * (Math.PI / 180));
view.triangle.setAngle(angleSlider.getValue() * (Math.PI / 180));
cannon.changeAngle(angleSlider.getValue());
view.repaint();
private void velocitySliderStateChanged(ChangeEvent evt) {
velocityTextField.setText(String.valueOf(velocitySlider.getValue()));
cannon.changeVelocityX(velocitySlider.getValue());
private void gravitySliderStateChanged(ChangeEvent evt) {
private void jMenuItem1ActionPerformed(ActionEvent evt) {
System.exit (0);
private void jMenuItem2ActionPerformed(ActionEvent evt) {
String message = "Cannon Animation\n"+
"Based on the Logic of Projectiles";
JOptionPane.showMessageDialog(null,message,"About this program",JOptionPane.PLAIN_MESSAGE);
/** Exit the Application */
private void exitForm(WindowEvent evt) {
System.exit (0);
/** Pause execution for t milliseconds. */
private void delay (int t) {
try {
Thread.sleep (t);
} catch (InterruptedException e) {}
public static void main(String [] args){
Cannon cn = new Cannon();
CannonController control = new CannonController(cn);
control.setTitle("Test");
control.setVisible(true);
if the cannon ball land in the bucket it should stop and the animation should indicate a 'hit' in some way. maybe by displaying a message.
if the cannonball hits the outside of the bucket it should bounce off.
Extra Notes.
1) The acceleration due to gravity is 9.8m/s to the (power of (2) eg s2.
2) The distance travelled in time t by a body with initial velocity v under constant acceleration a is:
v * t + a * t.pow(2) div 2;
The velocity at the end of time t will be v + a * t.
Distance is measure in pixels rather than meter so for simplicity we use 1 pixel per meter
When i pressed the fire button nothings happens. I'm going crazy. Please please help!Here is the interface specification for the RotatablePolygon class. I do not have the actual .java source.
Thanks
Class RotatablePolygon
java.lang.Object
|
--java.awt.geom.Area
|
--RotatablePolygon
All Implemented Interfaces:
java.lang.Cloneable, java.awt.Shape
public class RotatablePolygon
extends java.awt.geom.Area
Polygons which can be rotated around an `anchor' point and also translated (moved in the x and y directions).
Constructor Summary
RotatablePolygon(int[] xs, int[] ys, int n, double x, double y)
Create a new RotatablePolyogon with given vertices and anchor point (x,y).
Method Summary
double getAngle()
The current angle of rotation.
double getXanchor()
x-coordinate of the anchor point.
double getYanchor()
y-coordinate of the anchor point.
void rotate(double da)
Rotate the polygon from its current position by angle da (in radians) around the anchor.
void rotateDegrees(double da)
Rotate the polygon from its current position by angle da (in degrees) around the anchor.
void setAngle(double a)
Set the angle of rotation of the polygon to be angle a (in radians) around the anchor.
void setAngleDegrees(double a)
Set the angle of rotation of the polygon to be angle a (in degrees) around the anchor.
void setPosition(double x, double y)
Shift the polygon's position to put its anchor point at (x,y).
void translate(double dx, double dy)
Shift the polygon's position and anchor point by given amounts.
Methods inherited from class java.awt.geom.Area
add, clone, contains, contains, contains, contains, createTransformedArea, equals, exclusiveOr, getBounds, getBounds2D, getPathIterator, getPathIterator, intersect, intersects, intersects, isEmpty, isPolygonal, isRectangular, isSingular, reset, subtract, transform
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Constructor Detail
RotatablePolygon
public RotatablePolygon(int[] xs,
int[] ys,
int n,
double x,
double y)
Create a new RotatablePolyogon with given vertices and anchor point (x,y).
REQUIRE: xs.length >= n && ys.length >= n
Parameters:
xs - x-coordinates of vertices
ys - y-coordinates of vertices
n - number of vertices
x - x-coordinate of the rotation anchor
y - y-coordinate of the rotation anchor
Method Detail
setPosition
public void setPosition(double x,
double y)
Shift the polygon's position to put its anchor point at (x,y).
Parameters:
x - new x-coordinate for anchor point
y - new y-coordinate for anchor point
translate
public void translate(double dx,
double dy)
Shift the polygon's position and anchor point by given amounts.
Parameters:
dx - amount to shift by in x-direction
dy - amount to shift by in y-direction
setAngle
public void setAngle(double a)
Set the angle of rotation of the polygon to be angle a (in radians) around the anchor.
Parameters:
a - angle to rotate to, in radians
setAngleDegrees
public void setAngleDegrees(double a)
Set the angle of rotation of the polygon to be angle a (in degrees) around the anchor.
Parameters:
a - angle to rotate to, in degrees
rotate
public void rotate(double da)
Rotate the polygon from its current position by angle da (in radians) around the anchor.
Parameters:
da - angle to rotate by, in radians
rotateDegrees
public void rotateDegrees(double da)
Rotate the polygon from its current position by angle da (in degrees) around the anchor.
Parameters:
da - angle to rotate by, in degrees
getAngle
public double getAngle()
The current angle of rotation.
getXanchor
public double getXanchor()
x-coordinate of the anchor point.
getYanchor
public double getYanchor()
y-coordinate of the anchor point. -
Please Help with Physics Project Here are the codings
I've got three(3) classes a Model, a view, and a controller.
This is a project about projectiles.it is an animation of a cannonball being fired from a cannon and travelling under the effect of gravity.A cannon fired at angle 'a' to the horizontal and with an initial speed 's', will have an initial velocity given by:
vx := s * cos(a);//velocity x equals the speed multiply by the cosine of angle a.
vy := s * sin(a);//velocity y equals the speed multiply by the sine of angle a.
Here are the code.
Model:
/** Cannon specifies the expected behaviour of a cannon*/
public class Cannon{
public static final int TICK = 60;
private int velocity = 0;
private static final double gravity = .098f;
private double angle = 0;
// distances & positions are meausred in pixels
private int x_pos; // ball's center x-position
private int y_pos; // ball's center y-position
// speed is measured in pixels per `tick'
private int x_velocity; // horizonal speed; positive is to the right
private int y_velocity; // vertical speed; positive is downwards
public Cannon() {
velocity = 3;
angle = 60;
angle = radians(angle);
x_pos = 0;
y_pos = 385;
/** shoot fires a shot from the cannon*/
public void shoot(){
move();
/**reload reloads the cannon with more shorts*/
public void reload() {
/** changeAngle changes the angle of the canon
* @params value - the amount to add or subtract from the current angle value*/
public void changeAngle(double value) {
angle = (double)value;
angle = radians(angle);
/** getAngle returns the current angle value of the cannon*/
public double getAngle() {
return angle;
/** changeVelocity changes the speed at which a cannon ball that is to be fire will travel at
* @params value - the new speed at which the user wants a cannon ball to travel at.*/
public void changeVelocityX(int value){
x_velocity = x_velocity * (int)Math.cos(value);
public void changeVelocityY(int value){
y_velocity = y_velocity * (int)Math.sin(value);
/** getVelocity returns the current velocity value of the cannon*/
public int getVelocityX() {
return x_velocity;
public int getVelocityY() {
return y_velocity;
/** getGravity returns the current gravity value of the cannon*/
public double getGravity() {
return gravity;
public int xPosition(){
return x_pos;
public int yPosition(){
return y_pos;
public void move(){
double dx = getVelocityX() * Math.cos(getAngle());
double dy = getVelocityY() * Math.sin(getAngle());
x_pos+=dx;
y_pos-=dy;
double radians (double angle){
return ((Math.PI * angle) / 180.0);
View:
import java.awt.*;
import javax.swing.*;
/** CannonView displays a cannon being fired.*/
public class CannonView extends JPanel{
/** DISPLAY_SIZE specifies the overall display area of the cannon and the bucket.*/
public static final int DISPLAY_AREA_SIZE = 600;
public RotatablePolygon rectangle;
public RotatablePolygon triangle;
public Cannon cannon;
public CannonView(Cannon c) {
this.setPreferredSize(new Dimension(600,450));
this.setBackground(Color.black);
cannon = c;
int xRectangle[] = {0,0,40,40,0};
int yRectangle[] = {400,300,300,400,400};
int xTriangle[] = {0,20,40,0};
int yTriangle[] = {300,280,300,300};
rectangle = new RotatablePolygon (xRectangle, yRectangle, 5,20,350);
// rectangle.setPosition (100, 100);
// triangle = new RotatablePolygon (xTriangle, yTriangle, 4,0,290);
triangle = new RotatablePolygon (xTriangle, yTriangle, 4,20,350);
//triangle.setPosition (100, 100);
JFrame frame = new JFrame();
frame.getContentPane().add(this);
frame.pack();
frame.setVisible(true);
frame.setTitle("Width = " + frame.getWidth() + " , Height = " + frame.getHeight());
/** drawBucket draws a bucket/target for which a moving cannon ball should hit.
* @param g - the graphics pen for which the drawing should occur.*/
public void drawBucket(Graphics g) {
g.setColor(Color.red);
int xvalues[] = {495, 519, 575, 595, 495};
int yvalues[] = {340, 400, 400, 340, 340};
Polygon poly1 = new Polygon (xvalues, yvalues, 5);
g.fillPolygon(poly1);
g.setColor(Color.white);
g.fillOval(495, 328, 100, 24);
Graphics2D g2d = (Graphics2D)g;
g2d.setStroke(new BasicStroke(2));
g.setColor(Color.red);
g.drawOval(495, 328, 100, 24);
g.drawOval(495,311,100,54);
/** drawCannon draws a cannon
* @param g - the graphics pen that will be used to draw the cannon.*/
public void drawCannon(Graphics g) {
Graphics2D g2 = (Graphics2D)g;
g.setColor(Color.red);
g2.fill(rectangle);
g.setColor(Color.orange);
g2.fill(triangle);
g.setColor(Color.blue);
g.fillOval(95, 340, 60, 60);
g.setColor(Color.magenta);
for (int i = 0; i < 6; i++){
g.fillArc(95, 340, 60, 60, i* 60, 30);
g.setColor(Color.black);
g.fillOval(117, 362, 16, 16);
/** drawCannonShots will draw the actual number of shots already used by the cannon
* @param g - the graphics pen that will be used to draw the shots of the cannon.*/
public void drawCannonShots(Graphics g) {
g.setColor(Color.orange);
g.fillOval(cannon.xPosition(),cannon.yPosition(),16,16);
/** drawTrail will draw a trail of smoke to indicate where a cannon ball has passed
* @param g - the graphics pen used to draw the trail.*/
public void drawTrail(Graphics g){}
/**drawGround draws the ground for which the cannon sits*/
public void drawGround(Graphics g) {
g.setColor(Color.green.brighter());
g.fillRect(0,400,600,50);
/** drawMovingCannonBall draw a cannon ball moving at a certain speed (velocity),
* with a certain amount of gravitational acting upon it, at a certain angle.
* @params g - the graphics pen used to draw the moving cannon ball.
* @params gravity - the value of gravity.
* @params velocity - the speed at which the ball is travelling.
* @params angle - the angle at which the ball was shot from.*/
public void drawMovingCannonBall(Graphics g, double gravity, double velocity, double angle){}
/** paintComponent paints the cannon,bucket
* @param g - graphics pen.*/
public void paintComponent(Graphics g) {
super.paintComponent(g);
drawGround(g);
drawBucket(g);
drawCannon(g);
drawCannonShots(g);
Controller
/** CannonController controls the interaction between the user and a cannon*/
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
public class CannonController extends JFrame{
public JMenuBar jMenuBar2;
public JMenu jMenu2;
public JMenuItem jMenuItem1;
public JMenu jMenu3;
public JMenuItem jMenuItem2;
public JLabel angleLabel, velocityLabel;
public JTextField angleTextField, velocityTextField;
public JButton fireButton, reloadButton;
public JSlider angleSlider, velocitySlider;
private CannonView view;
private Cannon cannon;
int oldValue, newValue;
public CannonController(Cannon acannon) {
cannon = acannon;
view = new CannonView(cannon);
loadControls();
angleTextField.setText(String.valueOf(angleSlider.getValue()));
oldValue = angleSlider.getValue();
newValue = oldValue + 1;
velocityTextField.setText(String.valueOf(velocitySlider.getValue()));
this.setSize(328,308);
this.setLocation(view.getWidth()-this.getWidth(),0);
/** loadControl loads all of the GUI controls that a
* user of the cannon animation will use to interact with the program*/
public void loadControls() {
jMenuBar2 = new JMenuBar();
jMenu2 = new JMenu();
jMenuItem1 = new JMenuItem();
jMenu3 = new JMenu();
jMenuItem2 = new JMenuItem();
angleLabel = new JLabel();
velocityLabel = new JLabel();
angleTextField = new JTextField();
velocityTextField = new JTextField();
fireButton = new JButton();
reloadButton = new JButton();
angleSlider = new JSlider();
velocitySlider = new JSlider();
jMenuBar2.setBorderPainted(false);
jMenu2.setModel(jMenu2.getModel());
jMenu2.setText("File");
jMenuItem1.setText("Exit");
jMenuItem1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
jMenuItem1ActionPerformed(evt);
jMenu2.add(jMenuItem1);
jMenuBar2.add(jMenu2);
jMenu3.setText("Help");
jMenuItem2.setText("About this Program");
jMenuItem2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
jMenuItem2ActionPerformed(evt);
jMenu3.add(jMenuItem2);
jMenuBar2.add(jMenu3);
getContentPane().setLayout(null);
setTitle("Cannon Controller Form");
setResizable(false);
setMenuBar(getMenuBar());
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent evt) {
exitForm(evt);
angleLabel.setText("Angle:");
getContentPane().add(angleLabel);
angleLabel.setLocation(10, 20);
angleLabel.setSize(angleLabel.getPreferredSize());
velocityLabel.setText("Velocity:");
getContentPane().add(velocityLabel);
velocityLabel.setLocation(10, 80);
velocityLabel.setSize(velocityLabel.getPreferredSize());
angleTextField.setToolTipText("Only numeric values are allow");
getContentPane().add(angleTextField);
angleTextField.setBounds(280, 20, 30, 20);
velocityTextField.setToolTipText("Only numeric values are allow");
getContentPane().add(velocityTextField);
velocityTextField.setBounds(280, 80, 30, 20);
fireButton.setToolTipText("Click to fire a shot");
fireButton.setText("Fire");
fireButton.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent evt) {
fireButtonMouseClicked(evt);
getContentPane().add(fireButton);
fireButton.setBounds(60, 160, 80, 30);
reloadButton.setToolTipText("Click to reload cannon");
reloadButton.setText("Reload");
reloadButton.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent evt) {
reloadButtonMouseClicked(evt);
getContentPane().add(reloadButton);
reloadButton.setBounds(150, 160, 80, 30);
angleSlider.setMinorTickSpacing(30);
angleSlider.setPaintLabels(true);
angleSlider.setPaintTicks(true);
angleSlider.setMinimum(0);
angleSlider.setMajorTickSpacing(60);
angleSlider.setToolTipText("Change the cannon angle");
angleSlider.setMaximum(360);
angleSlider.setValue(0);
angleSlider.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent evt) {
angleSliderStateChanged(evt);
getContentPane().add(angleSlider);
angleSlider.setBounds(60, 20, 210, 40);
velocitySlider.setMinorTickSpacing(5);
velocitySlider.setPaintLabels(true);
velocitySlider.setPaintTicks(true);
velocitySlider.setMinimum(1);
velocitySlider.setMajorTickSpacing(10);
velocitySlider.setToolTipText("Change the speed of the cannon ball");
velocitySlider.setMaximum(28);
velocitySlider.setValue(3);
velocitySlider.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent evt) {
velocitySliderStateChanged(evt);
getContentPane().add(velocitySlider);
velocitySlider.setBounds(60, 80, 210, 50);
setJMenuBar(jMenuBar2);
pack();
private void reloadButtonMouseClicked(MouseEvent evt) {
reloadButtonClick();
private void fireButtonMouseClicked(MouseEvent evt) {
fireButtonClick();
/** firstButtonClick is the event handler that sends a message
* to the cannon class to invokes the cannon's fire method*/
public void fireButtonClick() {
// JOptionPane.showMessageDialog(null,"You click Fire");
cannon.shoot();
view.repaint();
/** reloadButtonClick is the event handler that sends a message
* to the cannon class to invokes the cannon's reload method*/
public void reloadButtonClick() {
JOptionPane.showMessageDialog(null,"reload");
private void angleSliderStateChanged(ChangeEvent evt) {
angleTextField.setText(String.valueOf(angleSlider.getValue()));
view.rectangle.setAngle(angleSlider.getValue() * (Math.PI / 180));
view.triangle.setAngle(angleSlider.getValue() * (Math.PI / 180));
cannon.changeAngle(angleSlider.getValue());
view.repaint();
private void velocitySliderStateChanged(ChangeEvent evt) {
velocityTextField.setText(String.valueOf(velocitySlider.getValue()));
cannon.changeVelocityX(velocitySlider.getValue());
private void gravitySliderStateChanged(ChangeEvent evt) {
private void jMenuItem1ActionPerformed(ActionEvent evt) {
System.exit (0);
private void jMenuItem2ActionPerformed(ActionEvent evt) {
String message = "Cannon Animation\n"+
"Based on the Logic of Projectiles";
JOptionPane.showMessageDialog(null,message,"About this program",JOptionPane.PLAIN_MESSAGE);
/** Exit the Application */
private void exitForm(WindowEvent evt) {
System.exit (0);
/** Pause execution for t milliseconds. */
private void delay (int t) {
try {
Thread.sleep (t);
} catch (InterruptedException e) {}
public static void main(String [] args){
Cannon cn = new Cannon();
CannonController control = new CannonController(cn);
control.setTitle("Test");
control.setVisible(true);
if the cannon ball land in the bucket it should stop and the animation should indicate a 'hit' in some way. maybe by displaying a message.
if the cannonball hits the outside of the bucket it should bounce off.
Extra Notes.
1) The acceleration due to gravity is 9.8m/s to the (power of (2) eg s2.
2) The distance travelled in time t by a body with initial velocity v under constant acceleration a is:
v * t + a * t.pow(2) div 2;
The velocity at the end of time t will be v + a * t.
Distance is measure in pixels rather than meter so for simplicity we use 1 pixel per meter
When i pressed the fire button nothings happens. I'm going crazy. Please please help!Hi,
U put something on forum and keeping silence.If it is not necessary dont put in forum.I moved your cannon ball.If u want continous movement I need some more information.
Johnson
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