Chapter 31: Software Drawing, Time, and Graphical Gameslinear

Co-authored-by: Hsiang-Ying Fu <66062782+fuhsnn@users.noreply.github.com>
Co-authored-by: fuhsnn <66062782+fuhsnn@users.noreply.github.com>
Co-authored-by: Symious <14933944+symious@users.noreply.github.com>
Co-authored-by: Jun Kawasaki <jun784@gmail.com>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/main/smp/sys/time/DateTime.smp b/src/main/smp/sys/time/DateTime.smp
new file mode 100644
index 00000000..53b6688e
--- /dev/null
+++ b/src/main/smp/sys/time/DateTime.smp
@@ -0,0 +1,13 @@
+// Calendar view of an instant. Month/day start at 1; weekday is Sunday=0.
+// year==0 means out of the supported calendar range (years 1 through 9999).
+
+// All values default zero/false
+struct DateTime {
+    int year, month, day;
+    int hour, minute, second, millisecond;
+    int weekday, offsetSeconds;
+    bool daylight;
+};
+
+// Factory in the defining unit, so callers need no forward instance type.
+val empty = { -> new DateTime(); };