void astar_callback(int f){
TangoData tmp=TangoData::GetInstance();
//if ( tmp.is_relocalized==false ) return;

      trace_astar_sol->ClearVertexArray();
		MapSearchNode nodeStart(getNearestPosToPosStar(position_adf));
		MapSearchNode nodeEnd(tmp.pos_astar[f]);
        PlaceMarker(tmp.pos_astar[f]+kHeightOffset);
		astarsearch.SetStartAndGoalStates( nodeStart, nodeEnd );
		unsigned int SearchState;
		do
		{
			SearchState = astarsearch.SearchStep();
            MapSearchNode *p = astarsearch.GetOpenListStart();
            while( p )p = astarsearch.GetOpenListNext();
            p = astarsearch.GetClosedListStart();
            while( p )p = astarsearch.GetClosedListNext();
		}
		while( SearchState == AStarSearch<MapSearchNode>::SEARCH_STATE_SEARCHING );

		if( SearchState == AStarSearch<MapSearchNode>::SEARCH_STATE_SUCCEEDED )
		{		MapSearchNode *node = astarsearch.GetSolutionStart();
         		for( ;; )
				{
				    node = astarsearch.GetSolutionNext();
					if(!node)break;
                    trace_astar_sol->UpdateVertexArray(node->toVec3());
				};
				astarsearch.FreeSolutionNodes();
		}
		astarsearch.EnsureMemoryFreed();
}
Exemplo n.º 2
0
int main(int argc, char* argv[]) {
    cout << "STL A* Search implementation\n(C)2001 Justin Heyes-Jones\n";

    // Our sample problem defines the world as a 2d array representing a terrain
    // Each element contains an integer from 0 to 5 which indicates the cost
    // of travel across the terrain. Zero means the least possible difficulty
    // in travelling (think ice rink if you can skate) whilst 5 represents the
    // most difficult. 9 indicates that we cannot pass.

    // Create an instance of the search class...

    AStarSearch<MapSearchNode> astarsearch;

    unsigned int SearchCount = 0;

    const unsigned int NumSearches = 1;

    while (SearchCount < NumSearches) {
        // Create a start state
        MapSearchNode nodeStart;
        nodeStart.x = rand() % MAP_WIDTH;
        nodeStart.y = rand() % MAP_HEIGHT;

        // Define the goal state
        MapSearchNode nodeEnd;
        nodeEnd.x = rand() % MAP_WIDTH;
        nodeEnd.y = rand() % MAP_HEIGHT;

        // Set Start and goal states

        astarsearch.SetStartAndGoalStates(nodeStart, nodeEnd);

        unsigned int SearchState;
        unsigned int SearchSteps = 0;

        do {
            SearchState = astarsearch.SearchStep();

            SearchSteps++;

#if DEBUG_LISTS

            cout << "Steps:" << SearchSteps << "\n";

            int len = 0;

            cout << "Open:\n";
            MapSearchNode* p = astarsearch.GetOpenListStart();
            while (p) {
                len++;
#if !DEBUG_LIST_LENGTHS_ONLY
                ((MapSearchNode*)p)->PrintNodeInfo();
#endif
                p = astarsearch.GetOpenListNext();
            }

            cout << "Open list has " << len << " nodes\n";

            len = 0;

            cout << "Closed:\n";
            p = astarsearch.GetClosedListStart();
            while (p) {
                len++;
#if !DEBUG_LIST_LENGTHS_ONLY
                p->PrintNodeInfo();
#endif
                p = astarsearch.GetClosedListNext();
            }

            cout << "Closed list has " << len << " nodes\n";
#endif

        } while (SearchState ==
                 AStarSearch<MapSearchNode>::SEARCH_STATE_SEARCHING);

        if (SearchState == AStarSearch<MapSearchNode>::SEARCH_STATE_SUCCEEDED) {
            cout << "Search found goal state\n";

            MapSearchNode* node = astarsearch.GetSolutionStart();

#if DISPLAY_SOLUTION
            cout << "Displaying solution\n";
#endif
            int steps = 0;

            node->PrintNodeInfo();
            for (;;) {
                node = astarsearch.GetSolutionNext();

                if (!node) {
                    break;
                }

                node->PrintNodeInfo();
                steps++;
            };

            cout << "Solution steps " << steps << endl;

            // Once you're done with the solution you can free the nodes up
            astarsearch.FreeSolutionNodes();

        } else if (SearchState ==
                   AStarSearch<MapSearchNode>::SEARCH_STATE_FAILED) {
            cout << "Search terminated. Did not find goal state\n";
        }

        // Display the number of loops the search went through
        cout << "SearchSteps : " << SearchSteps << "\n";

        SearchCount++;

        astarsearch.EnsureMemoryFreed();
    }

    return 0;
}
Exemplo n.º 3
0
int Ghost::SetTarget(){
    // std::cout<<"target set"<<std::endl;
     
     
AStarSearch<MapSearchNode> astarsearch;

	unsigned int SearchCount = 0;

	const unsigned int NumSearches = 1;

	while(SearchCount < NumSearches)
	{

		// Create a start state
		MapSearchNode nodeStart;

		nodeStart.x = m_X/30;
		nodeStart.y = m_Y/30; 

		// Define the goal state
		MapSearchNode nodeEnd;
		if(pill==0&&!Dead){
		  nodeEnd.x = targetFx;						
		  nodeEnd.y = targetFy; 
        }
        if(pill==1&&!Dead){
		  nodeEnd.x = targetFy;						
		  nodeEnd.y = targetFx; 
        } 
        if(Dead){
                 
          nodeEnd.x = 12;
         // targetFx=12;
         // targetFy=9;						
          nodeEnd.y = 10; 
        }
		// Set Start and goal states
		
		astarsearch.SetStartAndGoalStates( nodeStart, nodeEnd );

		unsigned int SearchState;
		unsigned int SearchSteps = 0;

		do
		{
			SearchState = astarsearch.SearchStep();

			SearchSteps++;

	#if DEBUG_LISTS

			cout << "Steps:" << SearchSteps << "\n";

			int len = 0;

			cout << "Open:\n";
			MapSearchNode *p = astarsearch.GetOpenListStart();
			while( p )
			{
				len++;
	#if !DEBUG_LIST_LENGTHS_ONLY			
			//	((MapSearchNode *)p)->PrintNodeInfo();
	#endif
				p = astarsearch.GetOpenListNext();
				
			}

			cout << "Open list has " << len << " nodes\n";

			len = 0;

			cout << "Closed:\n";
			p = astarsearch.GetClosedListStart();
			while( p )
			{
				len++;
	#if !DEBUG_LIST_LENGTHS_ONLY			
			//	p->PrintNodeInfo();
	#endif			
				p = astarsearch.GetClosedListNext();
			}

			cout << "Closed list has " << len << " nodes\n";
	#endif

		}
		while( SearchState == AStarSearch<MapSearchNode>::SEARCH_STATE_SEARCHING );

		if( SearchState == AStarSearch<MapSearchNode>::SEARCH_STATE_SUCCEEDED )
		{
		//	cout << "Search found goal state\n";
                
				MapSearchNode *node = astarsearch.GetSolutionStart();

	#if DISPLAY_SOLUTION
				cout << "Displaying solution\n";
	#endif

			//	node->PrintNodeInfo();
				node = astarsearch.GetSolutionNext();
				if(!node){
                          
                    return 1;
                }
                if(node){
 
                  targetNx=node->RetX();
			      targetNy=node->RetY();                        
            //    node->PrintNodeInfo();
                   if(Dead)
                      if(targetNx==12&&targetNy==10)
			               Reset();

			               
                }
/*			    cout << "for reference \n";
			    for( ;; )
				{
					node = astarsearch.GetSolutionNext();
					if( !node )
					{
						break;
					}

					node->PrintNodeInfo();
				};
	*/		    
			// Once you're done with the solution you can free the nodes up
				astarsearch.FreeSolutionNodes();

	
		}
		else if( SearchState == AStarSearch<MapSearchNode>::SEARCH_STATE_FAILED ) 
		{
			cout << "Search terminated. Did not find goal state\n";
		
		}

		// Display the number of loops the search went through
	//	cout << "SearchSteps : " << SearchSteps << "\n";

		SearchCount ++;

		astarsearch.EnsureMemoryFreed();
	}

return 0;

                   
}
Exemplo n.º 4
0
bool ast::astar( uint8_t* map,
                 uint32_t width,
                 uint32_t height,
                 const point_t start,
                 const point_t goal,
                 std::vector<point_t>& path )
{
    //cout << "STL A* Search implementation\n(C)2001 Justin Heyes-Jones\n";

    // set the static vars
    _map = map;
    _map_width = width;
    _map_height = height;

    // Our sample problem defines the world as a 2d array representing a terrain
    // Each element contains an integer from 0 to 5 which indicates the cost
    // of travel across the terrain. Zero means the least possible difficulty
    // in travelling (think ice rink if you can skate) whilst 5 represents the
    // most difficult. 9 indicates that we cannot pass.

    // Create an instance of the search class...

    AStarSearch<MapSearchNode> astarsearch;

    unsigned int SearchCount = 0;

    const unsigned int NumSearches = 1;

    bool path_found = false;

    while(SearchCount < NumSearches)
    {

        // Create a start state
        MapSearchNode nodeStart;
        nodeStart.x = start.x;
        nodeStart.y = start.y;

        // Define the goal state
        MapSearchNode nodeEnd;
        nodeEnd.x = goal.x;
        nodeEnd.y = goal.y;

        // Set Start and goal states

        astarsearch.SetStartAndGoalStates( nodeStart, nodeEnd );

        unsigned int SearchState;
        unsigned int SearchSteps = 0;

        do
        {
            SearchState = astarsearch.SearchStep();

            SearchSteps++;

#if DEBUG_LISTS

            cout << "Steps:" << SearchSteps << "\n";

            int len = 0;

            cout << "Open:\n";
            MapSearchNode *p = astarsearch.GetOpenListStart();
            while( p )
            {
                len++;
#if !DEBUG_LIST_LENGTHS_ONLY
                ((MapSearchNode *)p)->PrintNodeInfo();
#endif
                p = astarsearch.GetOpenListNext();

            }

            cout << "Open list has " << len << " nodes\n";

            len = 0;

            cout << "Closed:\n";
            p = astarsearch.GetClosedListStart();
            while( p )
            {
                len++;
#if !DEBUG_LIST_LENGTHS_ONLY
                p->PrintNodeInfo();
#endif
                p = astarsearch.GetClosedListNext();
            }

            cout << "Closed list has " << len << " nodes\n";
#endif

        }
        while( SearchState == AStarSearch<MapSearchNode>::SEARCH_STATE_SEARCHING );

        if( SearchState == AStarSearch<MapSearchNode>::SEARCH_STATE_SUCCEEDED )
        {
            //cout << "Search found goal state\n";

            MapSearchNode *node = astarsearch.GetSolutionStart();

#if DISPLAY_SOLUTION
            cout << "Displaying solution\n";
#endif
            int steps = 0;

            //node->PrintNodeInfo();

            path.push_back( point_t( node->x, node->y ) );

            for( ;; )
            {
                node = astarsearch.GetSolutionNext();

                if( !node )
                {
                    break;
                }

                //node->PrintNodeInfo();

                path.push_back( point_t( node->x, node->y ) );

                steps ++;

            };

            //cout << "Solution steps " << steps << endl;

            // Once you're done with the solution you can free the nodes up
            astarsearch.FreeSolutionNodes();

            path_found = true;

        }
        else if( SearchState == AStarSearch<MapSearchNode>::SEARCH_STATE_FAILED )
        {
            cout << "Search terminated. Did not find goal state\n";

        }

        // Display the number of loops the search went through
        //cout << "SearchSteps : " << SearchSteps << "\n";

        SearchCount ++;

        astarsearch.EnsureMemoryFreed();
    }

    return path_found;
}
int main( int argc, char *argv[] )
{
  // creating map of Romania
  for(int i=0; i<MAX_CITIES; i++)
    for(int j=0; j<MAX_CITIES; j++)
      RomaniaMap[i][j]=-1.0;

  RomaniaMap[Arad][Sibiu]=140;
  RomaniaMap[Arad][Zerind]=75;
  RomaniaMap[Arad][Timisoara]=118;
  RomaniaMap[Bucharest][Giurgiu]=90;
  RomaniaMap[Bucharest][Urziceni]=85;
  RomaniaMap[Bucharest][Fagaras]=211;
  RomaniaMap[Bucharest][Pitesti]=101;
  RomaniaMap[Craiova][Drobeta]=120;
  RomaniaMap[Craiova][RimnicuVilcea]=146;
  RomaniaMap[Craiova][Pitesti]=138;
  RomaniaMap[Drobeta][Craiova]=120;
  RomaniaMap[Drobeta][Mehadia]=75;
  RomaniaMap[Eforie][Hirsova]=75;
  RomaniaMap[Fagaras][Bucharest]=211;
  RomaniaMap[Fagaras][Sibiu]=99;
  RomaniaMap[Giurgiu][Bucharest]=90;
  RomaniaMap[Hirsova][Eforie]=86;
  RomaniaMap[Hirsova][Urziceni]=98;
  RomaniaMap[Iasi][Vaslui]=92;
  RomaniaMap[Iasi][Neamt]=87;
  RomaniaMap[Lugoj][Timisoara]=111;
  RomaniaMap[Lugoj][Mehadia]=70;
  RomaniaMap[Mehadia][Lugoj]=70;
  RomaniaMap[Mehadia][Drobeta]=75;
  RomaniaMap[Neamt][Iasi]=87;
  RomaniaMap[Oradea][Zerind]=71;
  RomaniaMap[Oradea][Sibiu]=151;
  RomaniaMap[Pitesti][Bucharest]=101;
  RomaniaMap[Pitesti][RimnicuVilcea]=97;
  RomaniaMap[Pitesti][Craiova]=138;
  RomaniaMap[RimnicuVilcea][Pitesti]=97;
  RomaniaMap[RimnicuVilcea][Craiova]=146;
  RomaniaMap[RimnicuVilcea][Sibiu]=80;
  RomaniaMap[Sibiu][RimnicuVilcea]=80;
  RomaniaMap[Sibiu][Fagaras]=99;
  RomaniaMap[Sibiu][Oradea]=151;
  RomaniaMap[Sibiu][Arad]=140;
  RomaniaMap[Timisoara][Arad]=118;
  RomaniaMap[Timisoara][Lugoj]=111;
  RomaniaMap[Urziceni][Bucharest]=85;
  RomaniaMap[Urziceni][Hirsova]=98;
  RomaniaMap[Urziceni][Vaslui]=142;
  RomaniaMap[Vaslui][Urziceni]=142;
  RomaniaMap[Vaslui][Iasi]=92;
  RomaniaMap[Zerind][Arad]=75;
  RomaniaMap[Zerind][Oradea]=71;

  // City names
  CityNames[Arad].assign("Arad");
  CityNames[Bucharest].assign("Bucharest");
  CityNames[Craiova].assign("Craiova");
  CityNames[Drobeta].assign("Drobeta");
  CityNames[Eforie].assign("Eforie");
  CityNames[Fagaras].assign("Fagaras");
  CityNames[Giurgiu].assign("Giurgiu");
  CityNames[Hirsova].assign("Hirsova");
  CityNames[Iasi].assign("Iasi");
  CityNames[Lugoj].assign("Lugoj");
  CityNames[Mehadia].assign("Mehadia");
  CityNames[Neamt].assign("Neamt");
  CityNames[Oradea].assign("Oradea");
  CityNames[Pitesti].assign("Pitesti");
  CityNames[RimnicuVilcea].assign("RimnicuVilcea");
  CityNames[Sibiu].assign("Sibiu");
  CityNames[Timisoara].assign("Timisoara");
  CityNames[Urziceni].assign("Urziceni");
  CityNames[Vaslui].assign("Vaslui");
  CityNames[Zerind].assign("Zerind");

  ENUM_CITIES initCity = Arad;
  if(argc == 2)
  {
    bool found = false;
    for(size_t i=0; i<CityNames.size(); i++)
      if(CityNames[i].compare(argv[1])==0)
      {
        initCity = (ENUM_CITIES)i;
        found = true;
        break;
      }
    if(not found)
    {
      cout << "There is no city named "<<argv[1]<<" in the map!\n";
      return(1);
    }
  }

  // An instance of A* search class
	AStarSearch<PathSearchNode> astarsearch;

	unsigned int SearchCount = 0;
	const unsigned int NumSearches = 1;

	while(SearchCount < NumSearches)
	{
		// Create a start state
		PathSearchNode nodeStart;
		nodeStart.city = initCity;

		// Define the goal state, always Bucharest!
		PathSearchNode nodeEnd;
		nodeEnd.city = Bucharest;

		// Set Start and goal states
		astarsearch.SetStartAndGoalStates( nodeStart, nodeEnd );

		unsigned int SearchState;
		unsigned int SearchSteps = 0;

		do
		{
			SearchState = astarsearch.SearchStep();
			SearchSteps++;

	#if DEBUG_LISTS

			cout << "Steps:" << SearchSteps << "\n";

			int len = 0;

			cout << "Open:\n";
			PathSearchNode *p = astarsearch.GetOpenListStart();
			while( p )
			{
				len++;
	#if !DEBUG_LIST_LENGTHS_ONLY
				((PathSearchNode *)p)->PrintNodeInfo();
	#endif
				p = astarsearch.GetOpenListNext();

			}
			cout << "Open list has " << len << " nodes\n";

			len = 0;

			cout << "Closed:\n";
			p = astarsearch.GetClosedListStart();
			while( p )
			{
				len++;
	#if !DEBUG_LIST_LENGTHS_ONLY
				p->PrintNodeInfo();
	#endif
				p = astarsearch.GetClosedListNext();
			}

			cout << "Closed list has " << len << " nodes\n";
	#endif

		}
		while( SearchState == AStarSearch<PathSearchNode>::SEARCH_STATE_SEARCHING );

		if( SearchState == AStarSearch<PathSearchNode>::SEARCH_STATE_SUCCEEDED )
		{
			cout << "Search found the goal state\n";
      PathSearchNode *node = astarsearch.GetSolutionStart();
      cout << "Displaying solution\n";
      int steps = 0;
      node->PrintNodeInfo();
      for( ;; )
      {
        node = astarsearch.GetSolutionNext();
        if( !node ) break;
        node->PrintNodeInfo();
        steps ++;
      };
      cout << "Solution steps " << steps << endl;
      // Once you're done with the solution you can free the nodes up
			astarsearch.FreeSolutionNodes();
		}
		else if( SearchState == AStarSearch<PathSearchNode>::SEARCH_STATE_FAILED )
		{
			cout << "Search terminated. Did not find goal state\n";
		}
		// Display the number of loops the search went through
		cout << "SearchSteps : " << SearchSteps << "\n";
		SearchCount ++;
		astarsearch.EnsureMemoryFreed();
	}

	return 0;
}
Exemplo n.º 6
0
int main( int argc, char *argv[] )
{

	cout << "STL A* 8-puzzle solver implementation\n(C)2001 Justin Heyes-Jones\n";

	bool bUserBoard = false;

	if( argc > 1 )
	{
		char *userboard = argv[1];

		int i = 0;
		int c;

		while( c = argv[1][i] )
		{
			if( isdigit( c ) )
			{
				int num = (c - '0');

				PuzzleState::g_start[i] = static_cast<PuzzleState::TILE>(num);
				
			}
		
			i++;
		}


	}

	// Create an instance of the search class...

	AStarSearch<PuzzleState> astarsearch;

	int NumTimesToSearch = NUM_TIMES_TO_RUN_SEARCH;

	while( NumTimesToSearch-- )
	{

		// Create a start state
		PuzzleState nodeStart( PuzzleState::g_start );

		// Define the goal state
		PuzzleState nodeEnd( PuzzleState::g_goal );

		// Set Start and goal states
		astarsearch.SetStartAndGoalStates( nodeStart, nodeEnd );

		unsigned int SearchState;

		unsigned int SearchSteps = 0;

		do
		{
			SearchState = astarsearch.SearchStep();

#if DEBUG_LISTS

			float f,g,h;

			cout << "Search step " << SearchSteps << endl;

			cout << "Open:\n";
			PuzzleState *p = astarsearch.GetOpenListStart( f,g,h );
			while( p )
			{
				((PuzzleState *)p)->PrintNodeInfo();
				cout << "f: " << f << " g: " << g << " h: " << h << "\n\n";
				
				p = astarsearch.GetOpenListNext( f,g,h );
				
			}

			cout << "Closed:\n";
			p = astarsearch.GetClosedListStart( f,g,h );
			while( p )
			{
				p->PrintNodeInfo();
				cout << "f: " << f << " g: " << g << " h: " << h << "\n\n";
				
				p = astarsearch.GetClosedListNext( f,g,h );
			}

#endif

// Test cancel search
#if 0
			int StepCount = astarsearch.GetStepCount();
			if( StepCount == 10 )
			{
				astarsearch.CancelSearch();
			}
#endif
			SearchSteps++;
		}
		while( SearchState == AStarSearch<PuzzleState>::SEARCH_STATE_SEARCHING );

		if( SearchState == AStarSearch<PuzzleState>::SEARCH_STATE_SUCCEEDED )
		{
#if DISPLAY_SOLUTION_FORWARDS
			cout << "Search found goal state\n";
#endif
			PuzzleState *node = astarsearch.GetSolutionStart();

#if DISPLAY_SOLUTION_FORWARDS
			cout << "Displaying solution\n";
#endif
			int steps = 0;

#if DISPLAY_SOLUTION_FORWARDS
			node->PrintNodeInfo();
			cout << endl;
#endif
			for( ;; )
			{
				node = astarsearch.GetSolutionNext();

				if( !node )
				{
					break;
				}

#if DISPLAY_SOLUTION_FORWARDS
				node->PrintNodeInfo();
				cout << endl;
#endif
				steps ++;
			
			};

#if DISPLAY_SOLUTION_FORWARDS
			// todo move step count into main algorithm
			cout << "Solution steps " << steps << endl;
#endif

////////////

			node = astarsearch.GetSolutionEnd();

#if DISPLAY_SOLUTION_BACKWARDS
			cout << "Displaying reverse solution\n";
#endif
			steps = 0;

			node->PrintNodeInfo();
			cout << endl;
			for( ;; )
			{
				node = astarsearch.GetSolutionPrev();

				if( !node )
				{
					break;
				}
#if DISPLAY_SOLUTION_BACKWARDS
				node->PrintNodeInfo();
                cout << endl;
#endif
				steps ++;
			
			};

#if DISPLAY_SOLUTION_BACKWARDS
			cout << "Solution steps " << steps << endl;
#endif

//////////////

			// Once you're done with the solution you can free the nodes up
			astarsearch.FreeSolutionNodes();
		
		}
		else if( SearchState == AStarSearch<PuzzleState>::SEARCH_STATE_FAILED ) 
		{
#if DISPLAY_SOLUTION_INFO
			cout << "Search terminated. Did not find goal state\n";
#endif		
		}
		else if( SearchState == AStarSearch<PuzzleState>::SEARCH_STATE_OUT_OF_MEMORY ) 
		{
#if DISPLAY_SOLUTION_INFO
			cout << "Search terminated. Out of memory\n";
#endif		
		}

		

		// Display the number of loops the search went through
#if DISPLAY_SOLUTION_INFO
		cout << "SearchSteps : " << astarsearch.GetStepCount() << endl;
#endif
	}

	return 0;
}