From: Alan Cox <alan@linux.intel.com>
Date: Tue, 13 Mar 2018 13:06:26 +0000 (+0000)
Subject: startrek: add an input routine for x.yz fixed point co-ords
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=3ea5f9e0efb4dd933405eb73715f9611976c65e6;p=FUZIX.git

startrek: add an input routine for x.yz fixed point co-ords
---

diff --git a/Applications/games/startrek.c b/Applications/games/startrek.c
index b2aca079..25026232 100644
--- a/Applications/games/startrek.c
+++ b/Applications/games/startrek.c
@@ -256,6 +256,34 @@ static double input_dec(void)
 	return atof(x);
 }
 
+/* Input a value between 0.00 and 9.99 */
+static int16_t input_f00(void)
+{
+	int16_t v;
+	char buf[8];
+	char *x;
+	input(buf, 8);
+	x = buf;
+	if (!isdigit(*x))
+		return -1;
+	v = 100 * (*x++ - '0');
+	if (*x == 0)
+		return v;
+	if (*x++ != '.')
+		return -1;
+	if (!*x)
+		return v;
+	if (!isdigit(*x))
+		return -1;
+	v += 10 * (*x++ - '0');
+	if (!*x)
+		return v;
+	if (!isdigit(*x))
+		return -1;
+	v += *x++ - '0';
+	return v;
+}
+
 /* Integer: unsigned, or returns -1 for blank/error */
 static int input_int(void)
 {