fix: crash with lift handling

fix: some random crashes with some maps
fix: do not look at breakable until totally sure we're can break it
fix: wrong distance calculation in last enemy position randomizer
fix: problems with cs 1.5 won when built with ``nosmid`` switch (still crashes from time to time)
ctrl: add  bots death count to``yb list`` command
graph: disable buckets for small number of nodes graphs
graph: verify graph consistency and select appropriate pathfinding algorithm
misc: added mor vox sentences to welcome a player

inc/graph.h

@@ -219,7 +219,7 @@ public:
    bool isNodeReacheableEx (const Vector &src, const Vector &destination, const float maxHeight);
    bool isNodeReacheable (const Vector &src, const Vector &destination);
    bool isNodeReacheableWithJump (const Vector &src, const Vector &destination);
-   bool checkNodes (bool teleportPlayer);
+   bool checkNodes (bool teleportPlayer, bool onlyPaths = false);
    bool isVisited (int index);
    bool isAnalyzed () const;
 

inc/planner.h

@@ -49,7 +49,7 @@ public:
 };
 
 // bot heuristic functions for astar planner
-class Heuristic final {
+class PlannerHeuristic final {
 public:
    using Func = float (*) (int, int, int);
 
@@ -86,7 +86,7 @@ public:
 // A* algorithm for bots
 class AStarAlgo final : public NonCopyable {
 public:
-   using HeuristicFn = Heuristic::Func;
+   using HeuristicFn = PlannerHeuristic::Func;
 
 public:
    struct Route {
@@ -246,6 +246,7 @@ private:
    UniquePtr <DijkstraAlgo> m_dijkstra {};
    UniquePtr <FloydWarshallAlgo> m_floyd {};
    bool m_memoryLimitHit {};
+   bool m_pathsCheckFailed {};
 
 public:
    PathPlanner ();
@@ -269,6 +270,11 @@ public:
       return m_floyd.get ();
    }
 
+public:
+   bool isPathsCheckFailed () const {
+      return m_pathsCheckFailed;
+   }
+
 public:
    // do the pathfinding
    bool find (int srcIndex, int destIndex, NodeAdderFn onAddedNode, int *pathDistance = nullptr);

inc/yapb.h

@@ -662,6 +662,7 @@ public:
    int m_weaponType {}; // current weapon type
    int m_ammoInClip[kMaxWeapons] {}; // ammo in clip for each weapons
    int m_ammo[MAX_AMMO_SLOTS] {}; // total ammo amounts
+   int m_deathCount {}; // number of bot deaths
 
    bool m_isVIP {}; // bot is vip?
    bool m_isAlive {}; // has the player been killed or has he just respawned
@@ -819,6 +820,11 @@ public:
    // execute client command helper
    template <typename ...Args> void issueCommand (const char *fmt, Args &&...args);
 
+   // checks if valid prediction index
+   bool isNodeValidForPredict (const int index) const {
+      return BotGraph::instance ().exists (index) && index != m_currentNodeIndex;
+   }
+
 private:
    // returns true if bot is using a sniper rifle
    bool usesSniper () const {