import("graph.aystar", "AyStar", 6);
 
class Honza extends AIController {
	aystar = null;
	sources = [];
	goals = [];
 
	function Start();
	constructor() {
	    this.aystar = AyStar(this,
			this._cost, this._estimate,
			this._neighbours, this._directions);
	}
}
 
function Honza::_cost(/* Honza */ self,
	/* AyStar.Path */ path,
	/* tileindex */ newTile,
	/* int */ direction) {
	//AISign.BuildSign(newTile, "E: ");
	local ret;
	if (path != null){
      ret = path.GetLength();
      }else{
      ret=1;
      }
 
	return ret;
}
 
function Honza::_neighbours(/* Honza */ self,
	/* AyStar.Path */ path,
	/* tileindex */ node) {
	local offsets = [AIMap.GetMapSizeX(),
		-AIMap.GetMapSizeX(),
		-1,
		1];
	local newTile;
	local result = [];
 
	foreach (offset in offsets) {
	    newTile = node + offset;
	    if(!AITile.IsCoastTile(newTile)&&(AITile.IsBuildable(newTile))){
	    result.push([newTile, 1]);}
	}
	return result;
}
 
function Honza::_estimate(self,
	/* tileindex */ tile,
	/* int */ direction,
	/* array[tileindex, direction] */ goalNodes) {
	local ret = AIMap.DistanceSquare(tile,goalNodes[0][0]);
	AISign.BuildSign(tile, "Estimate:" + ret);
	return ret;
}
 
function Honza::_directions(self, tile,
	existingDirection, newDirection) {
	return false;
}
 
 
function Honza::Start() {
	this.sources = [];
	this.sources.push([43280, AIRail.RAILTRACK_NE_SW]);
	this.goals = [];
	this.goals.push([61458, 61458-1]);
 
	local coalCargo = null;
	foreach (cidx, cargo in AICargoList()){
    if(AICargo.GetCargoLabel(cidx) == "COAL"){
      coalCargo = cidx;
      break;
    }
  }
  if(coalCargo == null){
  return;
  }
 
	local powerPlants = AIIndustryList_CargoAccepting(coalCargo);
	local coalMines = AIIndustryList_CargoProducing(coalCargo);
 
	local powerPlant = powerPlants.Begin();
	local coalMine = coalMines.Begin();
 
	local cmTile = AIIndustry.GetLocation(coalMine)-AIMap.GetMapSizeX();
	local ppTile = AIIndustry.GetLocation(powerPlant)-AIMap.GetMapSizeX();
 
	AISign.BuildSign(cmTile, "Elektrarna");
	AISign.BuildSign(ppTile, "Dul");
 
	AIRail.SetCurrentRailType(AIRailTypeList().Begin())
	AIRail.BuildRailStation(cmTile-4,AIRail.RAILTRACK_NE_SW,1,4,AIStation.STATION_NEW);
	AIRail.BuildRailStation(ppTile-4,AIRail.RAILTRACK_NE_SW,1,4,AIStation.STATION_NEW);
 
	AILog.Info(AIError.GetLastErrorString());
 
	local ignoredTiles = [];
	local path = false;
	this.aystar.InitializePath(this.sources,
		this.goals, ignoredTiles);
	while (!path) {
	    AILog.Info("hledam cestu");
	    path = this.aystar.FindPath(-1);
	}
	if (path) {
	   local sL = AISignList();
	   foreach (idx, dSign in sL){AISign.RemoveSign(idx);}
 
	   local current = path.GetParent();
	   while (current){
        AISign.BuildSign(current.GetTile(), "E: ");
        current = current.GetParent();}
	}
 
 
	while (true) {
    	AILog.Info("I am a very new AI with a ticker called MyNewAI and I am at tick " + this.GetTick());
    	this.Sleep(50);
  	}
}