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 drawBalance(Graphics g)
// POST: Draws the balance of the current player
{
Font font; // Font used to draw balance
String message; // Message for balance
Color oldColor; // Sets for color
int x1; // Upper-left x coordinate
int y1; // Upper-left y coordinate
int x2; // Bottom-right x coordinate
int y2; // Bottom-right y coordinate
int width; // Width of the dialogue box
int height; // Height of the dialogue box
int offset; // Offset so the dialogue box is positioned
int balance; // Offset so the dialogue box is positioned
User player; // User value for the player
player = usersArray[0];
balance = player.getBalance();
oldColor = g.getColor();
x1 = ScaledPoint.scalerToX(0.72);
y1 = ScaledPoint.scalerToY(0.81);
x2 = ScaledPoint.scalerToX(0.88);
y2 = ScaledPoint.scalerToY(0.86);
width = x2 - x1;
height = y2 - y1;
message = "Balance:";
font = Drawing.getFont(message, width, height, FONTNAME, FONTSTYLE);
offset = (width - getFontMetrics(font).stringWidth(message)) / 2;
g.setColor(Color.WHITE);
g.drawString(message, x1 + offset, y2);
x1 = ScaledPoint.scalerToX(0.72);
y1 = ScaledPoint.scalerToY(0.865);
x2 = ScaledPoint.scalerToX(0.88);
y2 = ScaledPoint.scalerToY(0.915);
width = x2 - x1;
height = y2 - y1;
message = "$" + Integer.toString(balance);
font = Drawing.getFont(message, width, height, FONTNAME, FONTSTYLE);
offset = (width - getFontMetrics(font).stringWidth(message)) / 2;
g.drawString(message, x1 + offset, y2);
g.setColor(oldColor);
}
