weather change test

src/graphics/render/WorldRenderer.hpp

@@ -34,6 +34,32 @@ class ModelBatch;
 class Assets;
 struct EngineSettings;
 
+struct Weather {
+    WeatherPreset a {};
+    WeatherPreset b {};
+    float t = 1.0f;
+    float speed = 0.0f;
+
+    void update(float delta) {
+        t += delta * speed;
+        t = std::min(t, 1.0f);
+        b.intensity = t;
+        a.intensity = 1.0f - t;
+    }
+
+    float fogOpacity() const {
+        return b.fogOpacity * t + a.fogOpacity * (1.0f - t);
+    }
+
+    float fogDencity() const {
+        return b.fogDencity * t + a.fogDencity * (1.0f - t);
+    }
+
+    float fogCurve() const {
+        return b.fogCurve * t + a.fogCurve * (1.0f - t);
+    }
+};
+
 class WorldRenderer {
     Engine& engine;
     const Level& level;
@@ -75,7 +101,7 @@ public:
     std::unique_ptr<ParticlesRenderer> particles;
     std::unique_ptr<BlockWrapsRenderer> blockWraps;
     std::unique_ptr<PrecipitationRenderer> precipitation;
-    std::vector<WeatherPreset> weatherInstances;
+    Weather weather {};
 
     static bool showChunkBorders;
     static bool showEntitiesDebug;