Add first pass sky lighting

Scripts/setup_ground_zero_demo_map.py

@@ -68,25 +68,11 @@ DEMO_ACTORS = [
         "rotation": unreal.Rotator(0.0, 135.0, 0.0),
     },
     {
-        "label": "AGR_DemoSun",
-        "class": unreal.DirectionalLight,
-        "location_xy": unreal.Vector(-22000.0, -9000.0, 0.0),
-        "fixed_z": 35000.0,
-        "rotation": unreal.Rotator(-42.0, -35.0, 0.0),
-    },
-    {
-        "label": "AGR_DemoSkyLight",
-        "class": unreal.SkyLight,
+        "label": "AGR_DemoSkyLightingController",
+        "class": unreal.AgrarianSkyLightingController,
         "location_xy": unreal.Vector(-18000.0, -7000.0, 0.0),
         "fixed_z": 12000.0,
-        "rotation": unreal.Rotator(0.0, 0.0, 0.0),
-    },
-    {
-        "label": "AGR_DemoFog",
-        "class": unreal.ExponentialHeightFog,
-        "location_xy": unreal.Vector(-18000.0, -7000.0, 0.0),
-        "fixed_z": 4000.0,
-        "rotation": unreal.Rotator(0.0, 0.0, 0.0),
+        "rotation": unreal.Rotator(-42.0, -35.0, 0.0),
     },
     {
         "label": "AGR_DemoNoticeActor",
@@ -97,6 +83,12 @@ DEMO_ACTORS = [
     },
 ]
 
+LEGACY_DEMO_LIGHTING_LABELS = {
+    "AGR_DemoSun",
+    "AGR_DemoSkyLight",
+    "AGR_DemoFog",
+}
+
 
 BIOME_RESOURCE_ACTORS = [
     {
@@ -330,7 +322,7 @@ def spawn_foliage_actor(height_values):
     reserved_points = [
         spec["location_xy"]
         for spec in DEMO_ACTORS
-        if spec["label"] not in {"AGR_DemoSun", "AGR_DemoSkyLight", "AGR_DemoFog", "AGR_DemoNoticeActor"}
+        if spec["label"] not in {"AGR_DemoSkyLightingController", "AGR_DemoNoticeActor"}
     ]
 
     foliage_actor = unreal.AgrarianEditorAutomationLibrary.spawn_actor_in_editor_world(
@@ -405,6 +397,7 @@ def main():
         raise RuntimeError(f"Could not load map: {MAP_PATH}")
 
     labels = {spec["label"] for spec in DEMO_ACTORS}
+    labels.update(LEGACY_DEMO_LIGHTING_LABELS)
     labels.update(spec["label"] for spec in BIOME_RESOURCE_ACTORS)
     labels.update(spec["label"] for spec in WATER_SOURCE_ACTORS)
     labels.add(FOLIAGE_LABEL)

Scripts/verify_sky_lighting_controller.py

@@ -0,0 +1,66 @@
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+SKY_H = ROOT / "Source" / "AgrarianGame" / "AgrarianSkyLightingController.h"
+SKY_CPP = ROOT / "Source" / "AgrarianGame" / "AgrarianSkyLightingController.cpp"
+MAP_SETUP = ROOT / "Scripts" / "setup_ground_zero_demo_map.py"
+TDD = ROOT / "Docs" / "TechnicalDesignDocument.md"
+ROADMAP = ROOT / "AGRARIAN_DEVELOPMENT_ROADMAP.md"
+
+
+EXPECTED = {
+    SKY_H: [
+        "class AAgrarianSkyLightingController : public AActor",
+        "TObjectPtr<UDirectionalLightComponent> SunLight;",
+        "TObjectPtr<USkyLightComponent> SkyLight;",
+        "TObjectPtr<UExponentialHeightFogComponent> HeightFog;",
+        "void RefreshSkyLighting();",
+        "float CalculateSunAlpha",
+        "float CalculateWeatherCloudAlpha",
+    ],
+    SKY_CPP: [
+        "#include \"AgrarianGameState.h\"",
+        "SunLight = CreateDefaultSubobject<UDirectionalLightComponent>",
+        "SkyLight = CreateDefaultSubobject<USkyLightComponent>",
+        "HeightFog = CreateDefaultSubobject<UExponentialHeightFogComponent>",
+        "GameState->SunriseHourLocal",
+        "GameState->SunsetHourLocal",
+        "GameState->ActiveWeatherInputs.CloudCoverPercent",
+        "SunLight->SetWorldRotation",
+        "SunLight->SetIntensity",
+        "SkyLight->SetIntensity",
+        "HeightFog->SetFogDensity",
+    ],
+    MAP_SETUP: [
+        "AGR_DemoSkyLightingController",
+        "unreal.AgrarianSkyLightingController",
+        "LEGACY_DEMO_LIGHTING_LABELS",
+        "\"AGR_DemoSun\"",
+        "\"AGR_DemoSkyLight\"",
+        "\"AGR_DemoFog\"",
+    ],
+    TDD: [
+        "`AAgrarianSkyLightingController`",
+        "movable sun, skylight, and exponential-height-fog components",
+    ],
+    ROADMAP: [
+        "[x] Add first-pass sky and lighting.",
+    ],
+}
+
+
+def main() -> None:
+    missing = []
+    for path, snippets in EXPECTED.items():
+        text = path.read_text(encoding="utf-8")
+        for snippet in snippets:
+            if snippet not in text:
+                missing.append(f"{path.relative_to(ROOT)}: {snippet}")
+    if missing:
+        raise RuntimeError("Sky lighting controller verification failed: " + "; ".join(missing))
+    print("Agrarian sky lighting controller verification complete.")
+
+
+if __name__ == "__main__":
+    main()