Added a shiny new particle emitter.

1 files changed, 72 insertions, 0 deletions

diff --git a/src/tesseract/objects/emitters/ParticleEmitter.java b/src/tesseract/objects/emitters/ParticleEmitter.java
new file mode 100644
index 0000000..de5a556
--- /dev/null
+++ b/src/tesseract/objects/emitters/ParticleEmitter.java
@@ -0,0 +1,72 @@
+package tesseract.objects.emitters;
+
+import java.util.LinkedList;
+import java.util.List;
+
+import javax.vecmath.Color3f;
+import javax.vecmath.Vector3f;
+
+import tesseract.objects.Particle;
+import tesseract.objects.PhysicalObject;
+
+/**
+ * ParticleEmitter Class.
+ *
+ * @author Jesse Morgan
+ */
+public class ParticleEmitter extends PhysicalObject {
+
+	/**
+	 * Frequency of new objects.
+	 */
+	private float myFrequency;
+	
+	/**
+	 * The object to create...
+	 */
+	private Color3f myColor;
+	
+	/**
+	 * Counter to keep track of how long has passed.
+	 */
+	private float myCount;
+	
+	/**
+	 * Construct a new Particle Emitter.
+	 * 
+	 * @param position Where to put the emitter
+	 * @param frequency How often to emit the object (seconds).
+	 * @param color Color the particle be (null for random).
+	 */
+	public ParticleEmitter(final Vector3f position, final float frequency,
+			final Color3f color) {
+		
+		super(position);
+		
+		myCount = 0;
+		myFrequency = frequency;
+		myColor = color;
+	}
+
+	/**
+	 * Update State and maybe generate a new object.
+	 * 
+	 * @param duration The length of time that has passed.
+	 * @return A list of new objects to add to the world.
+	 */
+	public List<PhysicalObject> updateState(final float duration) {
+		List<PhysicalObject> children = super.updateState(duration);
+		
+		if (children == null) {
+			children = new LinkedList<PhysicalObject>();
+		}
+		
+		myCount += duration;
+		if (myCount >= myFrequency) {
+			children.add(new Particle(getPosition(), myColor));
+			myCount = 0;
+		}
+		
+		return children;
+	}
+}