/**
** Find the closest piece of terrain with the given flags.
**
** @param movemask The movement mask to reach that location.
** @param resmask Result tile mask.
** @param range Maximum distance for the search.
** @param player Only search fields explored by player
** @param startPos Map start position for the search.
**
** @param terrainPos OUT: Map position of tile.
**
** @note Movement mask can be 0xFFFFFFFF to have no effect
** Range is not circular, but square.
** Player is ignored if nil(search the entire map)
**
** @return True if wood was found.
*/
bool FindTerrainType(int movemask, int resmask, int range,
const CPlayer &player, const Vec2i &startPos, Vec2i *terrainPos)
{
TerrainTraversal terrainTraversal;
terrainTraversal.SetSize(Map.Info.MapWidth, Map.Info.MapHeight);
terrainTraversal.Init();
terrainTraversal.PushPos(startPos);
TerrainFinder terrainFinder(player, range, movemask & ~(MapFieldLandUnit | MapFieldAirUnit | MapFieldSeaUnit), resmask, terrainPos);
return terrainTraversal.Run(terrainFinder);
}
static bool FindNearestReachableTerrainType(int movemask, int resmask, int range,
const CPlayer &player, const Vec2i &startPos, Vec2i *terrainPos)
{
TerrainTraversal terrainTraversal;
terrainTraversal.SetSize(Map.Info.MapWidth, Map.Info.MapHeight);
terrainTraversal.Init();
Assert(Map.Field(startPos)->CheckMask(resmask));
terrainTraversal.PushPos(startPos);
NearReachableTerrainFinder nearReachableTerrainFinder(player, range, movemask, resmask, terrainPos);
return terrainTraversal.Run(nearReachableTerrainFinder);
}
bool AiForce::NewRallyPoint(const Vec2i &startPos, Vec2i *resultPos)
{
Assert(this->Units.size() > 0);
const CUnit &leader = *(this->Units[0]);
const int distance = leader.MapDistanceTo(startPos);
WaitOnRallyPoint = AI_WAIT_ON_RALLY_POINT;
TerrainTraversal terrainTraversal;
terrainTraversal.SetSize(Map.Info.MapWidth, Map.Info.MapHeight);
terrainTraversal.Init();
Assert(Map.Info.IsPointOnMap(startPos));
terrainTraversal.PushPos(startPos);
AiForceRallyPointFinder aiForceRallyPointFinder(leader, distance, leader.tilePos, resultPos);
return terrainTraversal.Run(aiForceRallyPointFinder);
}
