X-Git-Url: https://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fpong%2FBall.cpp;fp=src%2Fpong%2FBall.cpp;h=97248f32df6f6b2303ac9824f1806421c0eca1d7;hb=8b4877fe48d21d7e789cf52f81c1d6a87b06bcbc;hp=0000000000000000000000000000000000000000;hpb=42db59e3850c958821e8396fadc20fbeb71050c4;p=sdl-test8.git

diff --git a/src/pong/Ball.cpp b/src/pong/Ball.cpp
new file mode 100644
index 0000000..97248f3
--- /dev/null
+++ b/src/pong/Ball.cpp
@@ -0,0 +1,35 @@
+/*
+ * Ball.cpp
+ *
+ *  Created on: Apr 9, 2012
+ *      Author: holy
+ */
+
+#include "Ball.h"
+
+#include "Paddle.h"
+#include "../geometry/constants.h"
+
+#include <cmath>
+#include <SDL/SDL_gfxPrimitives.h>
+
+using game::Entity;
+using geometry::PI;
+
+
+namespace pong {
+
+Ball::Ball(Scalar r)
+: Entity(&shape, 4 * PI * r * r * r / 3)
+, shape(r) {
+
+}
+
+
+void Ball::Render(SDL_Surface *screen) const {
+	circleRGBA(screen, shape.Center().X(), shape.Center().Y(), shape.Radius(), 0xFF, 0xFF, 0xFF, 0xFF);
+	Vector angle(Vector(0, 1).Rotate(Angle()) * shape.Radius() + Origin());
+	lineRGBA(screen, shape.Center().X(), shape.Center().Y(), angle.X(), angle.Y(), 0xFF, 0xFF, 0xFF, 0xFF);
+}
+
+}