Added TextEffect to write Text with particles

Author: Slikey

src/de/slikey/effectlib/effect/TextLocationEffect.java

@@ -0,0 +1,58 @@
+package de.slikey.effectlib.effect;
+
+import java.awt.Color;
+import java.awt.Font;
+import java.awt.image.BufferedImage;
+
+import org.bukkit.Location;
+import org.bukkit.util.Vector;
+
+import de.slikey.effectlib.EffectManager;
+import de.slikey.effectlib.EffectType;
+import de.slikey.effectlib.util.MathUtils;
+import de.slikey.effectlib.util.ParticleEffect;
+import de.slikey.effectlib.util.StringParser;
+import de.slikey.effectlib.util.VectorUtils;
+
+public class TextLocationEffect extends LocationEffect {
+
+	public ParticleEffect particle = ParticleEffect.FLAME;
+	public String text = "Text";
+	public boolean invert = false;
+	public int stepX = 2;
+	public int stepY = 2;
+	public float size = (float) 1 / 15;
+
+	protected final StringParser parser;
+
+	public TextLocationEffect(EffectManager effectManager, Location location) {
+		this(effectManager, location, new Font("Tahoma", Font.PLAIN, 48));
+	}
+
+	public TextLocationEffect(EffectManager effectManager, Location location, Font font) {
+		super(effectManager, location);
+		parser = new StringParser(font);
+		type = EffectType.REPEATING;
+		period = 10;
+		iterations = -1;
+	}
+
+	@Override
+	public void onRun() {
+		int clr = 0;
+		BufferedImage image = parser.stringToBufferedImage(text);
+		for (int y = 0; y < image.getHeight(); y += stepY) {
+			for (int x = 0; x < image.getWidth(); x += stepX) {
+				clr = image.getRGB(x, y);
+				if (!invert && Color.black.getRGB() != clr)
+					continue;
+				else if (invert && Color.black.getRGB() == clr)
+					continue;
+				Vector v = new Vector(x, image.getHeight() - y, 0).multiply(size);
+				VectorUtils.rotateAroundAxisY(v, -location.getYaw() * MathUtils.degreesToRadians);
+				particle.display(location.add(v), visibleRange);
+				location.subtract(v);
+			}
+		}
+	}
+}

src/de/slikey/effectlib/util/StringParser.java

@@ -0,0 +1,60 @@
+package de.slikey.effectlib.util;
+
+import java.awt.Color;
+import java.awt.Font;
+import java.awt.FontMetrics;
+import java.awt.Graphics;
+import java.awt.font.FontRenderContext;
+import java.awt.geom.Rectangle2D;
+import java.awt.image.BufferedImage;
+
+/**
+ * Based on answer at StackOverflow 
+ * @see http://stackoverflow.com/questions/17282495/java-parsing-truetype-font-to-extract-each-characters-as-image-its-code
+ * @author Kevin
+ *
+ */
+public class StringParser {
+	protected final Font font;
+	
+	public StringParser(Font font) {
+		this.font = font;
+	}
+	
+	public BufferedImage stringToBufferedImage(String s) {
+	    //First, we have to calculate the string's width and height
+
+	    BufferedImage img = new BufferedImage(1, 1, BufferedImage.TYPE_4BYTE_ABGR);
+	    Graphics g = img.getGraphics();
+
+	    //Set the font to be used when drawing the string
+	    g.setFont(font);
+
+	    //Get the string visual bounds
+	    FontRenderContext frc = g.getFontMetrics().getFontRenderContext();
+	    Rectangle2D rect = font.getStringBounds(s, frc);
+	    //Release resources
+	    g.dispose();
+
+	    //Then, we have to draw the string on the final image
+
+	    //Create a new image where to print the character
+	    img = new BufferedImage((int) Math.ceil(rect.getWidth()), (int) Math.ceil(rect.getHeight()), BufferedImage.TYPE_4BYTE_ABGR);
+	    g = img.getGraphics();
+	    g.setColor(Color.black); //Otherwise the text would be white
+	    g.setFont(font);
+
+	    //Calculate x and y for that string
+	    FontMetrics fm = g.getFontMetrics();
+	    int x = 0;
+	    int y = fm.getAscent(); //getAscent() = baseline
+	    g.drawString(s, x, y);
+
+	    //Release resources
+	    g.dispose();
+
+	    //Return the image
+	    return img;
+	}
+
+}