1 files changed, 58 insertions, 0 deletions
diff --git a/dev/a2-carsoccer/ball.cc b/dev/a2-carsoccer/ball.cc
new file mode 100644
index 0000000..8289905
--- /dev/null
+++ b/dev/a2-carsoccer/ball.cc
@@ -0,0 +1,58 @@
+#include "ball.h"
+
+/// The constructor sets the radius and calls Reset() to start the ball at
+/// the center of the field
+Ball::Ball() : radius_(2.6f) {
+    Reset();
+}
+    
+Ball::~Ball() {
+    
+}
+
+
+float Ball::radius() {
+    return radius_;
+}
+    
+Point3 Ball::position() {
+    return position_;
+}
+
+void Ball::set_position(const Point3 &p) {
+    position_ = p;
+}
+
+Vector3 Ball::velocity() {
+    return velocity_;
+}
+
+void Ball::set_velocity(const Vector3 &v) {
+    velocity_ = v;
+}
+
+void Ball::Reset() {
+    position_ = Point3(0, radius_, 0);
+    
+    float a = GfxMath::PI * rand()/RAND_MAX;
+    velocity_ = Vector3(25*cos(a), 10, 25*sin(a));
+}
+
+void Ball::Draw(QuickShapes quickShapes, Matrix4 modelMatrix, Matrix4 viewMatrix, Matrix4 projMatrix) {
+    Color ballcol(1,1,1);
+    Matrix4 Mball =
+        Matrix4::Translation(position_- Point3(0,0,0)) *
+        Matrix4::Scale(Vector3(radius_, radius_, radius_));
+    quickShapes.DrawSphere(modelMatrix * Mball, viewMatrix, projMatrix, ballcol);
+    
+    // Draw the ball's shadow -- this is a bit of a hack, scaling Y by zero
+    // flattens the sphere into a pancake, which we then draw just a bit
+    // above the ground plane.
+    Color shadowcol(0.2f, 0.4f, 0.15f);
+    Matrix4 Mshadow =
+        Matrix4::Translation(Vector3(position_[0], -0.1f, position_[2])) *
+        Matrix4::Scale(Vector3(radius_, 0, radius_)) *
+        Matrix4::RotationX(90);
+    quickShapes.DrawSphere(modelMatrix * Mshadow, viewMatrix, projMatrix, shadowcol);
+}
+