Noob Questions From Nickropheliac: First game String drawing issues

Newbie & Debugging Questions
#1

In the single digits, the string is centered. How would I do this for double digits. I was thinking about offsetting x, but… I don’t understand offsets to their full extent. I’m not entirely sure if that would work. I’m too big of a noob, but I’m new and you guys are always willing to help! :smiley:

public void paintComponent(Graphics g) {

		super.paintComponent(g);
		Random rand = new Random();
	
		for (int lineY = 0; lineY < getHeight(); lineY += 50) {
			g.setColor(new Color(rand.nextInt(0xFF4AF6)));
			g.fillRoundRect(400, lineY, 20, 800, 0, 0);
		}

		g.setColor(Color.WHITE);
		g.fillRoundRect(ballX, ballY, 25, 25, 5, 25);
	for (int tick = 0; tick > getHeight(); tick--){
	
            g.setColor(new Color (rand.nextInt(0xFF4AF6)));
	}
	g.setColor(new Color(rand.nextInt(0xFF4AF6)));
	g.fillRoundRect(playerOneX, playerOneY, playerOneWidth,
					playerOneHeight, 50, 5);

			g.fillRoundRect(playerTwoX, playerTwoY, playerTwoWidth,
					playerTwoHeight, 50, 5);
	
			g.setColor(Color.WHITE);
			g.fillRoundRect(335, 180, 150, 150 , 50, 50);
			  g.setFont(new Font(Font.DIALOG, Font.BOLD, 150));
		      String rally = " " + rallyScore;
			  g.setColor(new Color (0xFF2172));
		      g.drawString(rally, 328, 310);
			  g.dispose();	
	}
#2

Well, just make an if to verify if the score is made by double digits and if it is to render the string with a generalized x for double digits


if(rally > 9){
	g.drawString(rally, 290, 310);
}else{
	g.drawString(rally, 328, 310);
}

I hope this helps. :smiley:

#3

The best way would be to get the width of the rendered string and center it around the point you want to render it.

#4

not sure if that’s what you need but you could work with the bounds of a drawn string in advance :


// [...]
Font font = new Font(Font.DIALOG, Font.BOLD, 150);
String text_to_draw = "sometext";

g.setFont(font);

FontRenderContext context;

// if "g" is available you can use :
context = g.getFontRenderContext();

// if not (with antialiasing) :
// context = new FontRenderContext(new AffineTransform(),RenderingHints.VALUE_TEXT_ANTIALIAS_ON,RenderingHints.VALUE_FRACTIONALMETRICS_ON);

Rectangle2D.Float bounds = (Rectangle2D.Float)font.getStringBounds(text_to_draw, context);

// use bounds to figure proper position where to draw the text.
// [...]
#5

First, You need to set the position where the rallyScore is rendered dynamically. Based on your GUI height/width. Then “offset” it in a if/else statement, Where “if (rallyScore == doubledigits )”:


guiWidth = 800;
guiHeight = 600;

if (rallyScore.length() > 1) {
   g.drawString(rally, (guiWidth / 2) - (rallyScore.length() / 2), guiHeight / 2);
} else {
   g.drawString(rally, guiWidth / 2, guiHeight / 2);
}

Hope this makes sense, You’ll have to adjust the values to position the score according to how you want it.

#6

Only way to do it that isn’t a total hack is basil’s method: get the rectangle that represents the drawn string’s bounds, offset by half the rect’s width to center the string.