Added way to set global light from game.

+ Some clean up in the mesh renderer

Game/game.cpp

@@ -99,6 +99,12 @@ extern "C" JULIET_API void __cdecl GameUpdate(Juliet::GameData* params, [[maybe_
 
         printf("Door is %s\n", door->IsOpened ? "Opened" : "Closed");
         printf("Rock has %d health points\n", rock->Health);
+
+        // Summer at 2pm lighting
+        Vector3 sunDirection = { -0.2f, -0.9f, -0.3f };
+        Vector3 sunColor = { 1.0f, 0.95f, 0.85f };
+        float ambientIntensity = 0.4f;
+        SetGlobalLight(sunDirection, sunColor, ambientIntensity);
     }
 
     GameMode previousFrameMode = gGameState->Mode;