Refactoring (#246)

add: yb_chat_percent, yb_camping_time_[min/max], yb_danger_factor[min/max], yb_chat_percent cvars
fix: possible crash with difficulty 0
fix: debug_goal should not be used as last history
fix:  startup on old hlds, because of missing pfnGetFileSize
fix: crash with out-bounds read
change: again tweaked some aiming code
change: player avoidance code so bots will jump less when stuck
change: max followers is just /4 of max players
refactor: redone distance between vectors
refactor: remove magic numbers in graph.add function

inc/graph.h

@@ -43,11 +43,6 @@ CR_DECLARE_SCOPED_ENUM (PathConnection,
    Bidirectional
 )
 
-// defines node add commands
-CR_DECLARE_SCOPED_ENUM (GraphAdd,
-   Normal = 0,
-)
-
 // a* route state
 CR_DECLARE_SCOPED_ENUM (RouteState,
    Open = 0,
@@ -94,6 +89,20 @@ CR_DECLARE_SCOPED_ENUM (LiftState,
    Leaving
 )
 
+// node add flags
+CR_DECLARE_SCOPED_ENUM (NodeAddFlag,
+   Normal = 0,
+   TOnly = 1,
+   CTOnly = 2,
+   NoHostage = 3,
+   Rescue = 4,
+   Camp = 5,
+   CampEnd = 6,
+   JumpStart = 9,
+   JumpEnd = 10,
+   Goal = 100
+)
+
 // a* route
 struct Route {
    float g, f;
@@ -312,6 +321,7 @@ public:
    int getDangerDamage (int team, int start, int goal);
    int getPathDist (int srcIndex, int destIndex);
    int clearConnections (int index);
+   int getBspSize ();
 
    float calculateTravelTime (float maxSpeed, const Vector &src, const Vector &origin);