Added static port system and a new altimeter model connected to it.

[flightgear.git] / src / Scenery / tileentry.hxx

diff --git a/src/Scenery/tileentry.hxx b/src/Scenery/tileentry.hxx
index e315d515071cb97c50b0bb5b029ffddce5fe3827..fec233e997cf06836089048cf0c5fcccfd4dc4a9 100644 (file)
--- a/src/Scenery/tileentry.hxx
+++ b/src/Scenery/tileentry.hxx
@@ -192,6 +192,18 @@ private:
 
     double timestamp;
 
+
+    // this variable tracks the status of the incremental memory freeing.
+    enum {
+        NODES = 0x01,
+        VEC_PTRS = 0x02,
+        TERRA_NODE = 0x04,
+        GROUND_LIGHTS = 0x08,
+        RWY_LIGHTS = 0x10,
+        LIGHTMAPS = 0x20
+    };
+    int free_tracker;
+
 public:
 
     // ADA --->
@@ -206,14 +218,13 @@ public:
     // Destructor
     ~FGTileEntry();
 
-#ifdef WISH_PLIB_WAS_THREADED // but it isn't
-    // Schedule tile to be freed/removed
-    void sched_removal();
-#endif
-
     // Clean up the memory used by this tile and delete the arrays
-    // used by ssg as well as the whole ssg branch
-    void free_tile();
+    // used by ssg as well as the whole ssg branch.  This does a
+    // partial clean up and exits so we can spread the load across
+    // multiple frames.  Returns false if work remaining to be done,
+    // true if dynamically allocated memory used by this tile is
+    // completely freed.
+    bool free_tile();
 
     // Calculate this tile's offset
     void SetOffset( const Point3D& p)