/*
 * Battlefield.cpp, part of VCMI engine
 *
 * Authors: listed in file AUTHORS in main folder
 *
 * License: GNU General Public License v2.0 or later
 * Full text of license available in license.txt file, in main folder
 *
 */
#include "StdInc.h"
#include <boost/test/unit_test.hpp>
#include "../lib/battle/BattleHex.h"
BOOST_AUTO_TEST_SUITE(BattlefieldHex_Suite)

BOOST_AUTO_TEST_CASE(getNeighbouringTiles)
{
	BattleHex mainHex;
	std::vector<BattleHex> neighbouringTiles;
	mainHex.setXY(16, 0);
	neighbouringTiles = mainHex.neighbouringTiles();
	BOOST_TEST(neighbouringTiles.size() == 1);
	mainHex.setXY(0, 0);
	neighbouringTiles = mainHex.neighbouringTiles();
	BOOST_TEST(neighbouringTiles.size() == 2);
	mainHex.setXY(15, 2);
	neighbouringTiles = mainHex.neighbouringTiles();
	BOOST_TEST(neighbouringTiles.size() == 3);
	mainHex.setXY(2, 0);
	neighbouringTiles = mainHex.neighbouringTiles();
	BOOST_TEST(neighbouringTiles.size() == 4);
	mainHex.setXY(1, 2);
	neighbouringTiles = mainHex.neighbouringTiles();
	BOOST_TEST(neighbouringTiles.size() == 5);
	mainHex.setXY(8, 5);
	neighbouringTiles = mainHex.neighbouringTiles();
	BOOST_TEST(neighbouringTiles.size() == 6);

	BOOST_REQUIRE(neighbouringTiles.size() == 6 && mainHex == 93);
	BOOST_TEST(neighbouringTiles.at(0) == 75);
	BOOST_TEST(neighbouringTiles.at(1) == 76);
	BOOST_TEST(neighbouringTiles.at(2) == 94);
	BOOST_TEST(neighbouringTiles.at(3) == 110);
	BOOST_TEST(neighbouringTiles.at(4) == 109);
	BOOST_TEST(neighbouringTiles.at(5) == 92);
}

BOOST_AUTO_TEST_CASE(getDistance)
{
	BattleHex firstHex(0, 0), secondHex(16, 0);
	BOOST_TEST((int)firstHex.getDistance(firstHex, secondHex) == 16);
	firstHex = 0, secondHex = 170;
	BOOST_TEST((int)firstHex.getDistance(firstHex, secondHex) == 10);
	firstHex = 16, secondHex = 181;
	BOOST_TEST((int)firstHex.getDistance(firstHex, secondHex) == 10);
	firstHex = 186, secondHex = 70;
	BOOST_TEST((int)firstHex.getDistance(firstHex, secondHex) == 17);
	firstHex = 166, secondHex = 39;
	BOOST_TEST((int)firstHex.getDistance(firstHex, secondHex) == 11);
	firstHex = 25, secondHex = 103;
	BOOST_TEST((int)firstHex.getDistance(firstHex, secondHex) == 9);
	firstHex = 18, secondHex = 71;
	BOOST_TEST((int)firstHex.getDistance(firstHex, secondHex) == 4);
}

BOOST_AUTO_TEST_CASE(mutualPositions)
{
	BattleHex firstHex(0, 0), secondHex(16, 0);
	firstHex = 86, secondHex = 68;
	BOOST_TEST((int)firstHex.mutualPosition(firstHex, secondHex) == 0);
	secondHex = 69;
	BOOST_TEST((int)firstHex.mutualPosition(firstHex, secondHex) == 1);
	secondHex = 87;
	BOOST_TEST((int)firstHex.mutualPosition(firstHex, secondHex) == 2);
	secondHex = 103;
	BOOST_TEST((int)firstHex.mutualPosition(firstHex, secondHex) == 3);
	secondHex = 102;
	BOOST_TEST((int)firstHex.mutualPosition(firstHex, secondHex) == 4);
	secondHex = 85;
	BOOST_TEST((int)firstHex.mutualPosition(firstHex, secondHex) == 5);
	secondHex = 46;
	BOOST_TEST((int)firstHex.mutualPosition(firstHex, secondHex) == -1);
}

BOOST_AUTO_TEST_CASE(getClosestTile)
{
	BattleHex mainHex(0);
	std::set<BattleHex> possibilities;
	possibilities.insert(3);
	possibilities.insert(170);
	possibilities.insert(100);
	possibilities.insert(119);
	possibilities.insert(186);

	BOOST_TEST(mainHex.getClosestTile(0, mainHex, possibilities) == 3);
	mainHex = 139;
	BOOST_TEST(mainHex.getClosestTile(1, mainHex, possibilities) == 119);
	mainHex = 16;
	BOOST_TEST(mainHex.getClosestTile(1, mainHex, possibilities) == 100);
	mainHex = 166;
	BOOST_TEST(mainHex.getClosestTile(0, mainHex, possibilities) == 186);
	mainHex = 76;
	BOOST_TEST(mainHex.getClosestTile(1, mainHex, possibilities) == 3);
	BOOST_TEST(mainHex.getClosestTile(0, mainHex, possibilities) == 100);
}

BOOST_AUTO_TEST_CASE(moveEDir)
{
	BattleHex mainHex(20);
	mainHex.moveInDirection(BattleHex::EDir::BOTTOM_RIGHT);
	BOOST_TEST(mainHex == 37);
	mainHex.moveInDirection(BattleHex::EDir::RIGHT);
	BOOST_TEST(mainHex == 38);
	mainHex.moveInDirection(BattleHex::EDir::TOP_RIGHT);
	BOOST_TEST(mainHex == 22);
	mainHex.moveInDirection(BattleHex::EDir::TOP_LEFT);
	BOOST_TEST(mainHex == 4);
	mainHex.moveInDirection(BattleHex::EDir::LEFT);
	BOOST_TEST(mainHex == 3);
	mainHex.moveInDirection(BattleHex::EDir::BOTTOM_LEFT);
	BOOST_TEST(mainHex == 20);
	mainHex.moveInDirection(BattleHex::EDir::NONE);
	BOOST_TEST(mainHex == 20);
}

BOOST_AUTO_TEST_SUITE_END()