private void showHelp(Graphics g)
// PRE: g must be initialized.
// POST: Displays the help image to the screen.
{
JOptionPane.showMessageDialog(this, "Once you are satisfied, click anywhere to continue!");
Drawing.drawImage(g, 0, 0, getWidth(), getHeight(), ".\\images\\help.jpg");
}
public void buyItemFromUser(User buyer, User seller, Item currentItem)
// PRE: buyer, seller, currentItem must be initialized
// POST: Purchases item from the store and has stores it into inventory.
{
int buyer_balance; // The new balance of the buyer
int seller_balance; // The new balance of the seller
String str; // First query
String str2; // Second query
String str3; // Third query
buyer_balance = buyer.getBalance() - currentItem.getPrice();
seller_balance = seller.getBalance() + currentItem.getPrice();
if (buyer_balance > 0) // If the buyer wont go negative
{
str =
String.format(
"Update users set balance = (%d) where user_name = '%s'",
buyer_balance, buyer.getUserName());
str2 =
String.format(
"Update users set balance = (%d) where user_name = '%s'",
seller_balance, seller.getUserName());
str3 =
String.format(
"Update items set owner_id = (%d) where item_name = '%s'",
buyer.getUserId(), currentItem.getItemName());
updateTables(str, str2, str3);
} else {
// Prompt the user with an error
JOptionPane.showMessageDialog(
null, "You will go bankrupt if you try buying that, try selling some items.");
}
}
@Override
public void keyPressed(KeyEvent e) {
int option; // The option the user selected.
User buyer; // User object for buyer
User seller; // User object for seller
Item selected_item; // Item object for selected item
if (help) // if in help mode
{
return;
}
switch (e.getKeyCode()) // handle event associated with key
{
case KeyEvent.VK_F1: // if f1 was pressed
switchStore(0);
break;
case KeyEvent.VK_F2: // if f2 was pressed
switchStore(1);
break;
case KeyEvent.VK_F3: // if f3 was pressed
switchStore(2);
break;
case KeyEvent.VK_F4: // if f4 was pressed
switchStore(3);
break;
case KeyEvent.VK_D: // if d or right was pressed
case KeyEvent.VK_RIGHT:
if (currentPage != totalPages - 1) // if we are not on the last page
{
currentPage++;
itemSelected = -1;
}
break;
case KeyEvent.VK_A: // if a or left was pressed
case KeyEvent.VK_LEFT:
if (currentPage != 0) // if we are not on the first page
{
currentPage--;
itemSelected = -1;
}
break;
case KeyEvent.VK_W: // if w or up was pressed
case KeyEvent.VK_UP:
if (itemSelected == -1) // if no items currently selected
{
itemSelected = 0;
} else // if an item was selected
{
itemSelected--;
if (itemSelected < 0) // loop if at beginning of list
{
itemSelected = ITEMSPERPAGE - 1;
}
}
break;
case KeyEvent.VK_S: // if s or down was pressed
case KeyEvent.VK_DOWN:
itemSelected++;
if (itemSelected >= ITEMSPERPAGE) // if at end of list, loop around
{
itemSelected = 0;
}
break;
case KeyEvent.VK_ENTER: // if enter was pressed
if (itemSelected == -1) // if no item was selected
{
break;
}
selected_item = itemsArray[itemSelected];
option =
JOptionPane.showConfirmDialog(
this, ((!mode) ? "Buy " : "Sell ") + "for " + "$" + selected_item.getPrice() + "?");
if (option == 0 && mode) // if they choose to buy
{
buyer = usersArray[0];
switch (store) // change message based on value of store.
{
case 0:
seller = usersArray[2];
break;
case 1:
seller = usersArray[1];
break;
case 2:
seller = usersArray[3];
break;
case 3:
seller = usersArray[4];
break;
default:
seller = usersArray[1];
}
buyItemFromUser(buyer, seller, selected_item);
} else if (option == 0 && mode) // if they choose to sell
{
seller = usersArray[0];
switch (store) // change message based on value of store.
{
case 0:
buyer = usersArray[2];
break;
case 1:
buyer = usersArray[1];
break;
case 2:
buyer = usersArray[3];
break;
case 3:
buyer = usersArray[4];
break;
default:
buyer = usersArray[1];
}
buyItemFromUser(buyer, seller, selected_item);
}
itemSelected = -1;
break;
default:
return;
}
repaint();
}
@Override
public void mousePressed(MouseEvent e) {
CustomButton buttonPressed; // Button that was pressed.
String buttonName; // The name of the button.
int option; // Option chosen by user.
User buyer; // User object for buyer
User seller; // User object for seller
Item selected_item; // Item object for selected item
if (help) // if in help mode
{
help = false;
repaint();
return;
}
wasItemSelected(e.getX(), e.getY());
buttonPressed = CustomButton.wasPressed(e.getX(), e.getY());
if (buttonPressed == null) // if no button was pressed
{
return;
}
buttonName = buttonPressed.getName();
playAudio(-1);
switch (buttonName) // handle event associated with button name
{
case "rightTab":
currentPage++;
itemSelected = -1;
break;
case "leftTab":
currentPage--;
itemSelected = -1;
break;
case "buyTab":
mode = false;
break;
case "sellTab":
mode = true;
break;
case "button":
selected_item = itemsArray[itemSelected];
option =
JOptionPane.showConfirmDialog(
this, ((!mode) ? "Buy " : "Sell ") + "for " + "$" + selected_item.getPrice() + "?");
if (option == 0 && (!mode)) // if they choose to buy
{
buyer = usersArray[0];
switch (store) // change message based on value of store.
{
case 0:
seller = usersArray[2];
break;
case 1:
seller = usersArray[1];
break;
case 2:
seller = usersArray[3];
break;
case 3:
seller = usersArray[4];
break;
default:
seller = usersArray[1];
}
buyItemFromUser(buyer, seller, selected_item);
} else if (option == 0 && mode) // if they choose to sell
{
seller = usersArray[0];
switch (store) // change message based on value of store.
{
case 0:
buyer = usersArray[2];
break;
case 1:
buyer = usersArray[1];
break;
case 2:
buyer = usersArray[3];
break;
case 3:
buyer = usersArray[4];
break;
default:
buyer = usersArray[1];
}
buyItemFromUser(buyer, seller, selected_item);
}
itemSelected = -1;
break;
case "nextStore":
if (++store == NUMSTORES) // if we're on the last store, loop around
{
store = 0;
}
switchStore(store);
break;
case "sort":
// something
orderToSort =
JOptionPane.showOptionDialog(
this,
"Sort by:",
"Sort",
JOptionPane.DEFAULT_OPTION,
JOptionPane.QUESTION_MESSAGE,
null,
SORTOPTIONS,
null);
break;
case "help":
help = true;
break;
default:
}
repaint();
}