Method IsField

engine/Poseidon/Game/OperMap.hpp:100–100

	void Init(int x, int z, int mask) {_x = x; _z = z; CreateField(mask);}

	bool IsField(int x, int z) {return x == _x && z == _z;}
	float BaseCost() {return _baseCost;}
	float HeurCost() {return _heurCost;}