From 8fab4b44b8241ffc6450780c6590908f4406f4da Mon Sep 17 00:00:00 2001
From: Valentin Popov <valentin@popov.link>
Date: Sun, 1 Nov 2026 00:26:45 +0400
Subject: fix(render): animate sky layers on the native UV clock

---
 apps/fparkan-game/src/camera_capture.rs | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'apps/fparkan-game/src/camera_capture.rs')

diff --git a/apps/fparkan-game/src/camera_capture.rs b/apps/fparkan-game/src/camera_capture.rs
index 9862546..bc16807 100644
--- a/apps/fparkan-game/src/camera_capture.rs
+++ b/apps/fparkan-game/src/camera_capture.rs
@@ -15,9 +15,16 @@ pub(super) struct LegacyCameraCapture {
     pub(super) far_plane: f32,
     pub(super) field_of_view_radians: f32,
     pub(super) atmosphere_seconds: Option<f32>,
+    pub(super) sky_uv_clock: Option<SkyUvClock>,
     pub(super) geometry_projection: Option<GeometryProjection>,
 }
 
+#[derive(Clone, Debug, Deserialize, PartialEq)]
+pub(super) struct SkyUvClock {
+    pub(super) verified: bool,
+    pub(super) elapsed_milliseconds: u32,
+}
+
 #[derive(Clone, Debug, Deserialize, PartialEq)]
 pub(super) struct GeometryProjection {
     verified: bool,
@@ -118,6 +125,9 @@ pub(super) fn load_legacy_camera_capture(
     if capture.geometry_projection.is_none() {
         eprintln!("render_coverage captured_projection_unverified=1 (capture has no geometry_projection; using the recorded camera boundary, which can clip nearby surfaces)");
     }
+    if capture.sky_uv_clock.is_none() {
+        eprintln!("render_coverage captured_sky_phase_unverified=1 (capture has no sky UV clock; using replay elapsed time)");
+    }
     Ok(capture)
 }
 
@@ -143,6 +153,13 @@ pub(super) fn parse_legacy_camera_capture(bytes: &[u8]) -> Result<LegacyCameraCa
     if capture.render_input_usable == Some(false) {
         return Err("legacy camera capture is marked render_input_usable=false".to_string());
     }
+    if capture
+        .sky_uv_clock
+        .as_ref()
+        .is_some_and(|clock| !clock.verified)
+    {
+        return Err("legacy camera sky UV clock is unverified".to_string());
+    }
     if capture
         .atmosphere_seconds
         .is_some_and(|seconds| !seconds.is_finite() || seconds < 0.0)
-- 
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