Add loading screen, fix tree/foliage collision, jump buffering, and fence rotation

- Loading screen stays visible until all terrain tiles finish streaming;
  character spawns only after terrain is loaded and Z-snapped to ground
- Reduce tree trunk collision bounds (5% of canopy, capped at 5.0) and
  make all small/medium trees, bushes, lily pads, and foliage walkthrough
- Add jump input buffering (150ms) and coyote time (100ms) for responsive jumps
- Fix fence orientation by adding +180° heading rotation
- Increase terrain load radius from 1 to 2 (5x5 tile grid)
- Add hearthstone callback for single-player camera reset

include/rendering/camera_controller.hpp

@@ -35,6 +35,7 @@ public:
     void reset();
 
     float getMovementSpeed() const { return movementSpeed; }
+    const glm::vec3& getDefaultPosition() const { return defaultPosition; }
     bool isMoving() const;
     float getYaw() const { return yaw; }
     float getFacingYaw() const { return facingYaw; }
@@ -116,6 +117,10 @@ private:
     float lastGroundZ = 0.0f;  // Last known ground height (fallback when no terrain)
     static constexpr float GRAVITY = -30.0f;
     static constexpr float JUMP_VELOCITY = 15.0f;
+    float jumpBufferTimer = 0.0f;   // Time since space was pressed
+    float coyoteTimer = 0.0f;       // Time since last grounded
+    static constexpr float JUMP_BUFFER_TIME = 0.15f;  // 150ms input buffer
+    static constexpr float COYOTE_TIME = 0.10f;        // 100ms grace after leaving ground
 
     // Swimming
     bool swimming = false;
@@ -160,9 +165,9 @@ private:
     static constexpr float WOW_GRAVITY = -19.29f;
     static constexpr float WOW_JUMP_VELOCITY = 7.96f;
 
-    // Default spawn position (Stormwind Trade District)
-    glm::vec3 defaultPosition = glm::vec3(-8830.0f, 640.0f, 200.0f);
-    float defaultYaw = 0.0f;   // Look north toward canals
+    // Default spawn position (Goldshire Inn)
+    glm::vec3 defaultPosition = glm::vec3(-9464.0f, 62.0f, 200.0f);
+    float defaultYaw = 0.0f;
     float defaultPitch = -5.0f;
 };
 

include/rendering/m2_renderer.hpp

@@ -47,6 +47,7 @@ struct M2ModelGPU {
     bool collisionPlanter = false;
     bool collisionSmallSolidProp = false;
     bool collisionNarrowVerticalProp = false;
+    bool collisionTreeTrunk = false;
     bool collisionNoBlock = false;
     bool collisionStatue = false;
 

include/rendering/terrain_manager.hpp

@@ -183,6 +183,7 @@ public:
      * Get statistics
      */
     int getLoadedTileCount() const { return static_cast<int>(loadedTiles.size()); }
+    int getPendingTileCount() const { return static_cast<int>(pendingTiles.size()); }
     TileCoord getCurrentTile() const { return currentTile; }
 
 private:
@@ -247,8 +248,8 @@ private:
 
     // Streaming parameters
     bool streamingEnabled = true;
-    int loadRadius = 1;      // Load tiles within this radius (3x3 grid for better CPU/GPU perf)
-    int unloadRadius = 2;    // Unload tiles beyond this radius
+    int loadRadius = 2;      // Load tiles within this radius (5x5 grid)
+    int unloadRadius = 3;    // Unload tiles beyond this radius
     float updateInterval = 0.1f;  // Check streaming every 0.1 seconds
     float timeSinceLastUpdate = 0.0f;