Hp bar work

src/main/java/net/runelite/client/plugins/opponentinfo/OpponentInfo.java

@@ -1,6 +1,9 @@
 package net.runelite.client.plugins.opponentinfo;
 
+import java.awt.Color;
+import java.awt.FontMetrics;
 import java.awt.Graphics;
+import java.awt.image.BufferedImage;
 import net.runelite.api.Actor;
 import net.runelite.api.Client;
 import net.runelite.api.Player;
@@ -9,6 +12,21 @@ import net.runelite.client.plugins.Plugin;
 
 public class OpponentInfo extends Plugin
 {
+	private static final int WIDTH = 140;
+	private static final int HEIGHT = 75;
+
+	private static final int TOP_BORDER = 2;
+	private static final int BOTTOM_BORDER = 2;
+
+	private static final int BAR_WIDTH = 124;
+	private static final int BAR_HEIGHT = 20;
+
+	private static final Color BACKGROUND = new Color(Color.gray.getRed(), Color.gray.getGreen(), Color.gray.getBlue(), 127);
+	private static final Color HP_GREEN = new Color(0, 146, 54, 230);
+	private static final Color HP_RED = new Color(102, 15, 16, 230);
+
+	private final BufferedImage image = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_ARGB);
+
 	private Actor getOpponent()
 	{
 		Client client = RuneLite.getClient();
@@ -27,6 +45,53 @@ public class OpponentInfo extends Plugin
 		if (opponent == null)
 			return;
 
-		graphics.drawString(opponent.getName() + " " + opponent.getHealth() + "/" + opponent.getMaxHealth(), 42, 42);
+		int cur = opponent.getHealth();
+		int max = opponent.getMaxHealth();
+
+		Graphics g = image.getGraphics();
+		FontMetrics fm = g.getFontMetrics();
+		
+		int height = TOP_BORDER
+			+ fm.getHeight(); // opponent name
+		if (max > 0)
+			height += 1 // between name and hp bar
+				+ BAR_HEIGHT; // bar
+		height += BOTTOM_BORDER;
+
+		g.setColor(BACKGROUND);
+		g.fillRect(0, 0, image.getWidth(), height);
+		
+		String str = opponent.getName();
+
+		int x = (image.getWidth() - fm.stringWidth(str)) / 2;
+		g.setColor(Color.white);
+		g.drawString(str, x, fm.getHeight() + TOP_BORDER);
+
+		// hp bar
+
+		if (max > 0)
+		{
+			float percent = (float) cur / (float) max;
+			if (percent > 100f)
+				percent = 100f;
+
+			int barWidth = (int) (percent * (float) BAR_WIDTH);
+			int barY = TOP_BORDER + fm.getHeight() + 1;
+
+			g.setColor(HP_GREEN);
+			g.fillRect((WIDTH - BAR_WIDTH) / 2, barY, barWidth, BAR_HEIGHT);
+			
+			g.setColor(HP_RED);
+			g.fillRect(((WIDTH - BAR_WIDTH) / 2) + barWidth, barY, BAR_WIDTH - barWidth, BAR_HEIGHT);
+
+			str = cur + " / " + max;
+			x = (image.getWidth() - fm.stringWidth(str)) / 2;
+			g.setColor(Color.white);
+			g.drawString(str, x, barY + fm.getHeight());
+		}
+
+		g.dispose();
+
+		graphics.drawImage(image, 10, 25, null);
 	}
 }

src/main/java/net/runelite/inject/callbacks/RSCanvasCallback.java

@@ -20,6 +20,8 @@ public class RSCanvasCallback
 		//clientGraphics.drawString("something, something 2", 42, 42);
 		new OpponentInfo().draw(clientGraphics);
 
+		clientGraphics.dispose();
+
 		superGraphics.drawImage(clientBuffer, 0, 0, null);
 
 		return gameBuffer.getGraphics();