Some code-internal restructuring following the assumption that game map height /

[plomrogue] / src / server / yx_uint8.c

diff --git a/src/server/yx_uint8.c b/src/server/yx_uint8.c
new file mode 100644 (file)
index 0000000..06fa81d
--- /dev/null
+++ b/src/server/yx_uint8.c
@@ -0,0 +1,59 @@
+/* src/server/yx_uint8.c */
+
+#include "yx_uint8.h"
+#include <stdint.h> /* uint8_t, UINT8_MAX */
+#include "../common/yx_uint8.h" /* yx_uint8 struct */
+
+
+
+extern uint8_t yx_uint8_cmp(struct yx_uint8 * a, struct yx_uint8 * b)
+{
+    if (a->y == b->y && a->x == b->x)
+    {
+        return 1;
+    }
+    return 0;
+}
+
+
+
+extern struct yx_uint8 mv_yx_in_dir(char d, struct yx_uint8 yx)
+{
+    if      (d == '8' && yx.y > 0)
+    {
+        yx.y--;
+    }
+    else if (d == '9' && yx.y > 0 && yx.x < UINT8_MAX)
+    {
+        yx.y--;
+        yx.x++;
+    }
+    else if (d == '6' && yx.x < UINT8_MAX)
+    {
+        yx.x++;
+    }
+    else if (d == '3' && yx.x < UINT8_MAX && yx.y < UINT8_MAX)
+    {
+        yx.y++;
+        yx.x++;
+    }
+    else if (d == '2' && yx.y < UINT8_MAX)
+    {
+        yx.y++;
+    }
+    else if (d == '1' && yx.y < UINT8_MAX && yx.x > 0)
+    {
+        yx.y++;
+        yx.x--;
+    }
+    else if (d == '4' && yx.x > 0)
+    {
+        yx.x--;
+    }
+    else if (d == '7' && yx.x > 0 && yx.y > 0)
+    {
+        yx.y--;
+        yx.x--;
+    }
+    return yx;
+}