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.");
}
}
private void drawItem(Graphics g, int item, Item currentItem) {
Font font; // The font to be used.
int x1; // The first x coordinate of drawing area.
int y1; // The first y coordinate of drawing area.
int x2; // The second x coordinate of drawing area.
int y2; // The second y coordinate of drawing area.
int width; // Width of drawing area.
int height; // Height of drawing area.
int iconX; // x coordinate of the icon.
int iconY; // y coordinate of the icon.
int iconLength; // Length of the icon.
int itemNameX; // The x coordinate of the item name.
int itemNameLength; // The length of the item name.
int itemPriceX; // The x coordinate of the item price.
int itemPriceWidth; // The width of the item price.
x1 = itemPositions[item][0].getScaledX();
x2 = itemPositions[item][1].getScaledX();
y1 = itemPositions[item][0].getScaledY();
y2 = itemPositions[item][1].getScaledY();
width = x2 - x1;
height = y2 - y1;
iconX = x1 + (int) (width * .01);
iconY = y1 + (int) (height * .1);
iconLength = (int) (height * .8);
Drawing.drawImage(g, iconX, iconY, iconLength, iconLength, currentItem.getItemPath());
itemNameX = iconX + (int) (iconLength * 1.5);
itemNameLength = (int) (width * 0.6);
font =
Drawing.getFont(
currentItem.getItemName(),
itemNameLength,
(int) (iconLength * 0.8),
FONTNAME,
FONTSTYLE);
g.setFont(font);
g.setColor(Color.WHITE);
g.drawString(currentItem.getItemName(), itemNameX, iconY + (int) (iconLength * 0.9));
itemPriceX = x1 + (int) (width * 0.8);
itemPriceWidth = (int) (width * 0.15);
font =
Drawing.getFont(
Integer.toString(currentItem.getPrice()),
itemPriceWidth,
iconLength,
FONTNAME,
FONTSTYLE);
g.setFont(font);
g.setColor(Color.WHITE);
g.drawString(
Integer.toString(currentItem.getPrice()), itemPriceX, iconY + (int) (iconLength * .9));
return;
}