added code for squirrels and sample code

Author: Sarah Sicard

BasicGraphics

@@ -0,0 +1,59 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package basicflyer;
+
+import basicgraphics.Sprite;
+import basicgraphics.SpriteCollisionEvent;
+import basicgraphics.SpriteComponent;
+import basicgraphics.images.Picture;
+import java.awt.Dimension;
+import java.io.IOException;
+
+/**
+ *
+ * @author sbrandt
+ */
+public class Falcon extends Sprite {
+    public Picture initialPic;
+    public void init(SpriteComponent sc) throws IOException {
+        initialPic = new Picture("mfalcon.png");
+        setPicture(initialPic);
+        Dimension d = sc.getSize();
+        setX(d.width/2);
+        setY(d.height/2);
+        setVelX(Math.cos(heading));
+        setVelY(Math.sin(heading));
+        this.sc = sc;
+        sc.addSprite(this);
+    }
+    SpriteComponent sc;
+    double heading = 0;
+    boolean update;
+    @Override
+    public void preMove() {
+        if(update) {
+            setVelX(Math.cos(heading));
+            setVelY(Math.sin(heading));
+            setPicture(initialPic.rotate(heading));
+            update = false;
+        }
+    }
+    @Override
+    public void processEvent(SpriteCollisionEvent se) {
+        if (se.xlo) {
+            setX(sc.getSize().width-getWidth());
+        }
+        if (se.xhi) {
+            setX(0);
+        }
+        if (se.ylo) {
+            setY(sc.getSize().height-getHeight());
+        }
+        if (se.yhi) {
+            setY(0);
+        }
+    }
+}

sample_code/basicflyer/Falcon.java

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+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package basicflyer;
+
+import basicgraphics.BasicFrame;
+import basicgraphics.SpriteComponent;
+import java.awt.Dimension;
+import java.awt.event.KeyAdapter;
+import java.awt.event.KeyEvent;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseListener;
+import java.io.IOException;
+
+/**
+ *
+ * @author sbrandt
+ */
+public class Flyer {
+    public static void main(String[] args) throws IOException {
+        BasicFrame bf = new BasicFrame("Flyer");
+        SpriteComponent sc = new SpriteComponent();
+        sc.setPreferredSize(new Dimension(800,400));
+        bf.add("Flyer",sc,0,0,1,1);
+        bf.show();
+        final Falcon f = new Falcon();
+        final double INCR = Math.PI*2/100.0;
+        bf.addKeyListener(new KeyAdapter() {
+            @Override
+            public void keyPressed(KeyEvent ke) {
+                if(ke.getKeyCode() == KeyEvent.VK_RIGHT) {
+                    f.heading += INCR;
+                    f.update = true;
+                } else if(ke.getKeyCode() == KeyEvent.VK_LEFT) {
+                    f.heading -= INCR;
+                    f.update = true;
+                } else if(ke.getKeyChar() == ' ') {
+                    Plasma pl = new Plasma();
+                    pl.setVelX(f.getVelX()*2);
+                    pl.setVelY(f.getVelY()*2);
+                    pl.setX(f.getX()+f.getWidth()*3./7.);
+                    pl.setY(f.getY()+f.getHeight()*3./6.5);
+                    pl.init(sc);
+                    sc.addSprite(pl);
+                }
+            }
+        });
+        f.init(sc);
+        sc.start(0,10);
+    }
+}

sample_code/basicflyer/Flyer.java

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+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package basicflyer;
+
+import basicgraphics.BasicFrame;
+import basicgraphics.Sprite;
+import basicgraphics.SpriteCollisionEvent;
+import basicgraphics.SpriteComponent;
+import basicgraphics.images.Picture;
+import java.awt.Color;
+import java.awt.Graphics;
+import java.awt.Image;
+
+/**
+ *
+ * @author sbrandt
+ */
+class Plasma extends Sprite {
+    
+    static Picture makeBall(Color color,int size) {
+        Image im = BasicFrame.createImage(size, size);
+        Graphics g = im.getGraphics();
+        g.setColor(color);
+        g.fillOval(0, 0, size, size);
+        return new Picture(im);
+    }
+    
+    public void init(SpriteComponent sc) {
+        setPicture(makeBall(Color.red,10));
+    }
+    
+    @Override
+    public void processEvent(SpriteCollisionEvent se) {
+        if(se.sprite2 != null) {
+        } else {
+            setActive(false);
+        }
+    }
+}