// Lab10-FoundationGameCode.cpp
#include <iostream>						// for cin, cout
#include <string>							// for string data type
using namespace std;					// needed because cin, cout, string are part of the std:: namespace
#include <conio.h>						// for _getche()
#include <time.h>							// for time()

void main()
{
srand(unsigned int(time(NULL)));
const int nLimitX = 25;	// a constant to represent the X-boundary of the game environment -- valid range 0-24 (inclusive)
const int nLimitY = 15;	// a constant to represent the Y-boundary of the game environment -- valid range 0-14 (inclusive)

int nTreasureX	= rand()%nLimitX;
int nTreasureY	= rand()%nLimitY;
int nTreasureGold = 500;
string sTreasureName = "Treasure Chest";

int nGodzillaX	= rand()%nLimitX;
int nGodzillaY	= rand()%nLimitY;
int nGodzillaHealthPoints = 40;
int nGodzillaStrength = 2000;
string sGodzillaName = "Godzilla";

int nPlayerX		= rand()%nLimitX;
int nPlayerY		= rand()%nLimitY;
int nPlayerHealthPoints = 80;
int nPlayerStrength = 40;
string sPlayerName;
cout << "Welcome to Godzilla's Revenge!";
cout << "\nSo, what's your name? ";
cin >> sPlayerName;

unsigned char ucDirection = 'a';
while (ucDirection != 'q') {
	system("cls"); // clear the screen before redisplaying the location information and map
	// DISPLAY STATUS INFORMATION
	cout << sPlayerName << ", your location is " << nPlayerX << ", " << nPlayerY << endl;
	cout << sGodzillaName << ": " << nGodzillaX << ',' << nGodzillaY << endl;
	cout << sTreasureName << ": " << nTreasureX << ',' << nTreasureY << endl;
	// end DISPLAY STATUS INFORMATION
	
	// DISPLAY A VISUAL MAP
	// Most of the locations are dots to indicate
	// open territory through which the Player and Godzilla move.
	// As the loops cycle through each row, the column positions are
	// displayed one after the next (a single character at a time).
	// The if-else-if determines if the current position being displayed
	// is in fact occupied by either the Player, Godzilla or the Treasure.
	// In that case, a character is displayed to show the object's location.
	for (int nY=0; nY<nLimitY; nY++) {// the outer loop cycles through one entire row on each repetition
		for (int nX=0; nX<nLimitX; nX++) {// the inner loop cycles through one character (column) position on each repetition
			if (nPlayerX == nX  &&  nPlayerY == nY)
				cout << char(2); // ASCII value for a happy-face character (player symbol)
			else if (nGodzillaX == nX  &&  nGodzillaY == nY)
				cout << 'G';			// character used to identify Godzilla's location
			else if (nTreasureX == nX  &&  nTreasureY == nY)
				cout << 'T';			// character used to identify location of treasure
			else
				cout << '.';			// character used to identify empty space
			} // end for nX
		cout << endl;
		} // end for nY
	// end DISPLAY A VISUAL MAP
				
	// aPlayer MOVES
	// movement is controlled by human player
	const unsigned char uncSpecialKeyCode = 224;	// arrow key values preceded by this character code
	const unsigned char ucUP = 72;			// 'H'
	const unsigned char ucRIGHT = 77;		// 'M'
	const unsigned char ucDOWN = 80;		// 'P'
	const unsigned char ucLEFT = 75;		// 'K'
	cout << "\nMove with an arrow key on the numeric pad (q to quit): ";
	ucDirection = _getch();
	if (ucDirection == uncSpecialKeyCode)		// pressing an arrow key, PgUp, PgDn  or Insert, etc. generates a two key sequence: ASCII value 224 followed by special key identifier
		ucDirection = _getch();								// since preceding character input was ASCII:224, the character being input will be a special key
	switch (ucDirection) {
		// Player can identify direction NORTH using any one of three keys: 'n' 'N' UpArrow
		case 'n': case 'N': case ucUP:		nPlayerY--; break;		// go north
		case 's': case 'S': case ucDOWN:	nPlayerY++; break;		// go south
		case 'e': case 'E': case ucRIGHT:	nPlayerX++; break;		// go east
		case 'w': case 'W': case ucLEFT:	nPlayerX--; break;		// go west
		case 'q': cout << "\nCome back soon . . .\n"; break;
		default:  cout << "\nYou didn't move, but " << sGodzillaName << " could. Better try again\n";      // unknown char
		}
	// end aPlayer MOVES

	// HANDLE PLAYER ENCOUNTERS WITH OTHER ELEMENTS OF GAME
	// Check if the player has found the treasure
	if (nPlayerX == nTreasureX  &&  nPlayerY == nTreasureY) {
		cout << endl << sPlayerName << ", you got " << sTreasureName << " which was worth " << nTreasureGold << endl;
		break; // leave the while loop (that is, end game play) since treasure has been found
		}
	
	// aGodzilla moves toward aPlayer, controlled by computer
	if (rand()%100 < 60) { // Slow down Godzilla's motion, by giving only a 60 percent chance that it moves on any given turn.
		if (nPlayerX > nGodzillaX) // determine the X direction to pursue the player
			nGodzillaX++; // player was to the east, move Godzilla east
		else if (nPlayerX < nGodzillaX)
			nGodzillaX--; // player was to the west, move Godzilla west
		//	else
		//		do not change the X position of Godzilla, since Godzilla is already on the same X column
		// end if move Godzilla on the X-axis

		if (nPlayerY > nGodzillaY) // determine the Y direction to pursue the player
			nGodzillaY++; // player was to the south, move Godzilla south
		else if (nPlayerY < nGodzillaY)
			nGodzillaY--; // player was to the north, move Godzilla north
		//	else
		//		do not change the Y position of Godzilla, since Godzilla is already on the same Y row
		// end if move Godzilla on the Y-axis
		} // end if (rand()%100 < 60) that is, end section that governs Godzilla's movement
		
	// When Godzilla lands on the player's location . . . it's game over
	if (nPlayerX == nGodzillaX  &&  nPlayerY == nGodzillaY) {
		cout << endl << sPlayerName << ", you were quite tasty!\n";
		break; // leave the while loop since player has been eaten
		}  // end if Godzilla finds player
	// end HANDLE ENCOUNTERS

	}  // end while
system("pause");
}  // end main