move sky sprites to environment

src/world/Environment.hpp

@@ -3,6 +3,9 @@
 #include "interfaces/Serializable.hpp"
 #include "util/EnumMetadata.hpp"
 
+#include <vector>
+#include <glm/gtc/constants.hpp>
+
 enum class SkyMode {
     NONE, SOLID, BOX
 };
@@ -13,13 +16,44 @@ VC_ENUM_METADATA(SkyMode)
     {"box", SkyMode::BOX},
 VC_ENUM_END
 
+struct SkySprite {
+    std::string texture;
+    float phase;
+    float distance;
+    bool emissive;
+    float altitude;
+};
+
 class Environment : public Serializable {
 public:
     struct {
         SkyMode mode = SkyMode::BOX;
         bool stars = true;
         bool clouds = true;
-        bool sprites = true;
+        // TODO: move defaults to config file
+        std::vector<SkySprite> sprites {
+            SkySprite {
+                "misc/moon",
+                glm::pi<float>() * 0.5f,
+                4.0f,
+                false,
+                glm::pi<float>() * 0.25f,
+            },
+            SkySprite {
+                "misc/moon_flare",
+                glm::pi<float>() * 0.5f,
+                0.5f,
+                false,
+                glm::pi<float>() * 0.25f,
+            },
+            SkySprite {
+                "misc/sun",
+                glm::pi<float>() * 1.5f,
+                4.0f,
+                true,
+                glm::pi<float>() * 0.25f,
+            },
+        };
     } sky;
 
     Environment() = default;