1 files changed, 65 insertions, 0 deletions
diff --git a/src/score.cpp b/src/score.cpp
new file mode 100644
index 0000000..7d0dc41
--- /dev/null
+++ b/src/score.cpp
@@ -0,0 +1,65 @@
+#include "score.h"
+
+inline int roundup(int value, int roundto) {
+	return value % roundto ? value + roundto - value % roundto : value;
+}
+
+inline int max(int x, int y) {
+	return x < y ? x : y;
+}
+
+Score::Score(int yaku_, int fu_, int dora_) : yaku(yaku_), fu(fu_), dora(dora_) {
+	
+}
+
+int Score::han() {
+	return yaku + dora;
+}
+
+int Score::fu_rounded() {
+	return roundup(fu, 10);
+}
+
+int Score::base_points() {
+	if(han() < 5) {
+		// Normal hand.
+		return max(fu_rounded() << (2 + han()), 2000);
+	
+	} else if(han() <= 5) {
+		// Mangan.
+		return 2000;
+	
+	} else if(han() <= 7) {
+		// Haneman.
+		return 3000;
+	
+	} else if(han() <= 10) {
+		// Baiman.
+		return 4000;
+	
+	} else if(han() <= 12) {
+		// Sanbaiman.
+		return 6000;
+	
+	} else {
+		// Kazoe yakuman.
+		return 8000;
+	
+	}
+}
+
+int Score::ron() {
+	return roundup(base_points() * 4, 100);
+}
+
+int Score::ron_east() {
+	return roundup(base_points() * 6, 100);
+}
+
+int Score::tsumo() {
+	return roundup(base_points(), 100);
+}
+
+int Score::tsumo_east() {
+	return roundup(base_points() * 2, 100);
+}