1 files changed, 98 insertions, 0 deletions
diff --git a/src/dice.cc b/src/dice.cc
new file mode 100644
index 00000000..637d2773
--- /dev/null
+++ b/src/dice.cc
@@ -0,0 +1,98 @@
+#include "dice.hpp"
+
+#include "z-rand.h"
+
+#include <cassert>
+
+void dice_init(dice_type *dice, long base, long num, long sides)
+{
+	assert(dice != NULL);
+
+	dice->base = base;
+	dice->num = num;
+	dice->sides = sides;
+}
+
+bool_ dice_parse(dice_type *dice, cptr s)
+{
+	long base, num, sides;
+
+	if (sscanf(s, "%ld+%ldd%ld", &base, &num, &sides) == 3)
+	{
+		dice_init(dice, base, num, sides);
+		return TRUE;
+	}
+
+	if (sscanf(s, "%ld+d%ld", &base, &sides) == 2)
+	{
+		dice_init(dice, base, 1, sides);
+		return TRUE;
+	}
+
+	if (sscanf(s, "d%ld", &sides) == 1)
+	{
+		dice_init(dice, 0, 1, sides);
+		return TRUE;
+	}
+
+	if (sscanf(s, "%ldd%ld", &num, &sides) == 2)
+	{
+		dice_init(dice, 0, num, sides);
+		return TRUE;
+	}
+
+	if (sscanf(s, "%ld", &base) == 1)
+	{
+		dice_init(dice, base, 0, 0);
+		return TRUE;
+	}
+
+	return FALSE;
+}
+
+void dice_parse_checked(dice_type *dice, cptr s)
+{
+	bool_ result = dice_parse(dice, s);
+	if (!result)
+	{
+		abort();
+	}
+}
+
+long dice_roll(dice_type *dice)
+{
+	assert(dice != NULL);
+	return dice->base + damroll(dice->num, dice->sides);
+}
+
+void dice_print(dice_type *dice, char *output)
+{
+	char buf[16];
+
+	output[0] = '\0';
+
+	if (dice->base > 0)
+	{
+		sprintf(buf, "%ld", dice->base);
+		strcat(output, buf);
+	}
+
+	if ((dice->num > 0) || (dice->sides > 0))
+	{
+		if (dice->base > 0)
+		{
+			strcat(output, "+");
+		}
+
+		if (dice->num > 1)
+		{
+			sprintf(buf, "%ld", dice->num);
+			strcat(output, buf);
+		}
+
+		strcat(output, "d");
+
+		sprintf(buf, "%ld", dice->sides);
+		strcat(output, buf);
+	}
+}