fix: breakable headache (ref #660)

fix: bots firing rates on short distances (ref #658)

inc/engine.h

@@ -164,6 +164,8 @@ private:
    edict_t *m_localEntity {};
 
    Array <edict_t *> m_breakables {};
+   HashMap <int32_t, bool> m_checkedBreakables {};
+
    SmallArray <ConVarReg> m_cvars {};
    SharedLibrary m_gameLib {};
    SharedLibrary m_engineLib {};
@@ -269,6 +271,9 @@ public:
    // creates a fake client's a nd resets all the entvars
    edict_t *createFakeClient (StringRef name);
 
+   // mark breakable entity as invalid
+   void markBreakableAsInvalid (edict_t *ent);
+
    // public inlines
 public:
    // get the current time on server
@@ -424,6 +429,11 @@ public:
       return !m_breakables.empty ();
    }
 
+   // is breakable entity is valid ?
+   bool isBreakableValid (edict_t *ent) {
+      return m_checkedBreakables[indexOfEntity (ent)];
+   }
+
    // find variable value by variable name
    StringRef findCvar (StringRef name) {
       return engfuncs.pfnCVarGetString (name.chars ());