added functions for calculating card/stackpoints

1 files changed, 31 insertions, 0 deletions

diff --git a/src/common.c b/src/common.c
new file mode 100644
index 0000000..d676f12
--- /dev/null
+++ b/src/common.c
@@ -0,0 +1,31 @@
+#include "common.h"
+
+int cardpoints(card c)
+{
+	int rem = c % 10;
+	int div = c / 10;
+
+	if(rem == div)
+		return (rem==5)?7:5;
+
+	if(rem == 5)
+		return 2;
+	else if(rem == 0)
+		return 3;
+
+	return 1;
+}
+
+int stackpoints(cardstack s)
+{
+	int points = 0;
+	for(int i=0; i<MAX_CARDSTACK_SIZE; i++)
+	{
+		card cur = s[i];
+		if(cur > 0)
+			points += cardpoints(cur);
+	}
+
+	return points;
+}
+