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Answer to Question #31388 in AJAX | JavaScript | HTML | PHP for Nardi

Question #31388
For the Battleship game, what is the code to randomly place 8 ships onto the enemy'd board if the player wants to cheat and see where the enemy had placed their 8 ships?
Expert's answer
#include<iostream>
#include <string>
using namespace std;

const int BOARD_WIDTH = 15;
const int BOARD_HEIGHT = 10;
const int SHIP_TYPES = 8;

const char isWATER = 247; //ASCII Character Code
const char isHIT = 'X';
const char isSHIP = 'S';
const char isMISS = '0';

struct POINT {
//A location on the grid defined
//by X(horizontal) Y(vertical) coordinates
int X;
int Y;
};

struct SHIP {
//Ship name
string name;
//Total points on the grid
int length;
//Coordinates of those points
POINT onGrid[5]; //0-4 max length of biggest ship
//Whether or not those points are a "hit"
bool hitFlag[5];
}ship[SHIP_TYPES];

struct PLAYER {
char grid[BOARD_WIDTH][BOARD_HEIGHT];
}player[3]; //Ignore player 0, just using player's 1 & 2

enum DIRECTION {HORIZONTAL,VERTICAL};
struct PLACESHIPS {
DIRECTION direction;
SHIP shipType;
};

bool gameRunning = false;

//Functions
void LoadShips();
void ResetBoard();
void DrawBoard(int);
PLACESHIPS UserInputShipPlacement();
bool UserInputAttack(int&,int&,int);
bool GameOverCheck(int);

int main()
{
LoadShips();
ResetBoard();

//"PLACE SHIPS" phase of game
//Loop through each player...
for (int aplyr=1; aplyr<3; ++aplyr)
{
//Loop through each ship type to place
for (int thisShip=0;
thisShip<SHIP_TYPES; ++thisShip)
{
//Display gameboard
for player

system("cls");
DrawBoard(aplyr);
//Give instructions
cout <<
"
";
cout <<
"INSTRUCTIONS (Player " << aplyr << ")

";
cout <<
"You are about to place your ships. Format should be:
";
cout <<
"Facing (0:Horizontal,1:Vertical), X (top-row) coords, Y (left-side)
coords
";
cout <<
"Example: 0 7 2 This would place a ship beginning at X:7
Y:2 going horizontal

";
cout <<
"Ship to place: " << ship[thisShip].name << " which
has a length of " << ship[thisShip].length <<
"
";
cout <<
"Where do you want it placed? ";

//Get input from user
and loop until good data is returned
PLACESHIPS aShip;

aShip.shipType.onGrid[0].X = -1;
while
(aShip.shipType.onGrid[0].X == -1)
{

aShip = UserInputShipPlacement();
}

//Combine user data
with "this ship" data
aShip.shipType.length
= ship[thisShip].length;
aShip.shipType.name =
ship[thisShip].name;

//Add the FIRST grid
point to the current player's game board

player[aplyr].grid[aShip.shipType.onGrid[0].X][aShip.shipType.onGrid[0].Y]
= isSHIP;

//Determine ALL grid
points based on length and direction
for (int i=1;
i<aShip.shipType.length; ++i)
{
if
(aShip.direction == HORIZONTAL){

aShip.shipType.onGrid[i].X =
aShip.shipType.onGrid[i-1].X+1;

aShip.shipType.onGrid[i].Y = aShip.shipType.onGrid[i-1].Y;
}
if
(aShip.direction == VERTICAL){

aShip.shipType.onGrid[i].Y =
aShip.shipType.onGrid[i-1].Y+1;

aShip.shipType.onGrid[i].X =
aShip.shipType.onGrid[i-1].X; }


//Add the REMAINING grid points to our current players game board

player[aplyr].grid[aShip.shipType.onGrid[i].X][aShip.shipType.onGrid[i].Y]
= isSHIP;
}
//Loop back through
each ship type
}
//Loop back through each player
}

//********* FINISHED WITH "PLACE SHIPS" PHASE
*********************************

//*****************************************************************************

//Ready to play the game
gameRunning = true;
int thisPlayer = 1;
do {
//Because we are ATTACKING now, the
//opposite players board is the display
board
int enemyPlayer;
if (thisPlayer == 1) enemyPlayer = 2;
if (thisPlayer == 2) enemyPlayer = 1;
system("cls");
DrawBoard(enemyPlayer);

//Get attack coords from this player
bool goodInput = false;
int x,y;
while (goodInput == false) {
goodInput =
UserInputAttack(x,y,thisPlayer);
}

//Check board; if a ship is there, set as
HIT.. otherwise MISS
if (player[enemyPlayer].grid[x][y] ==
isSHIP) player[enemyPlayer].grid[x][y] = isHIT;
if (player[enemyPlayer].grid[x][y] ==
isWATER) player[enemyPlayer].grid[x][y] = isMISS;

//Check to see if the game is over
//If 0 is returned, nobody has won yet
int aWin = GameOverCheck(enemyPlayer);
if (aWin != 0) {
gameRunning = false;
break;
}
//Alternate between each player as we loop
back around
thisPlayer = (thisPlayer == 1) ? 2 : 1;
} while (gameRunning);

system("cls");
cout << "

CONGRATULATIONS!!! PLAYER
" << thisPlayer << " HAS WON THE GAME!



";

system("pause");
return 0;
}


bool GameOverCheck(int enemyPLAYER)
{
bool winner = true;
//Loop through enemy board
for (int w=0; w<BOARD_WIDTH; ++w){
for (int h=0;
h<BOARD_HEIGHT; ++h){

//If any ships remain, game is NOT over
if
(player[enemyPLAYER].grid[w][h] = isSHIP)

{

winner = false;

return winner;

}
}}
//If we get here, somebody won, game over!
return winner;
}


bool UserInputAttack(int& x, int& y, int theplayer)
{
cout << "
PLAYER " << theplayer
<< ", ENTER COORDINATES TO ATTACK: ";
bool goodInput = false;
cin >> x >> y;
if (x<0 || x>=BOARD_WIDTH) return goodInput;
if (y<0 || y>=BOARD_HEIGHT) return goodInput;
goodInput = true;
return goodInput;
}

PLACESHIPS UserInputShipPlacement()
{
int d, x, y;
PLACESHIPS tmp;
//Using this as a bad return
tmp.shipType.onGrid[0].X = -1;
//Get 3 integers from user
cin >> d >> x >> y;
if (d!=0 && d!=1) return tmp;
if (x<0 || x>=BOARD_WIDTH) return tmp;
if (y<0 || y>=BOARD_HEIGHT) return tmp;
//Good data
tmp.direction = (DIRECTION)d;
tmp.shipType.onGrid[0].X = x;
tmp.shipType.onGrid[0].Y = y;
return tmp;
}

void LoadShips()
{
//Sets the default data for the ships
//we plan to include in the game
//IMPORTANT!! > MUST MATCH SHIP_TYPES -Default=5 (0-4)
ship[0].name = "Cruiser"; ship[0].length = 2;
ship[1].name = "Frigate"; ship[1].length = 3;
ship[2].name = "Submarine"; ship[2].length = 3;
ship[3].name = "Escort"; ship[3].length = 4;
ship[4].name = "Battleship"; ship[4].length = 5;
}
void ResetBoard()
{
//Loop through each player
for (int plyr=1; plyr<3; ++plyr)
{
//For each grid point, set contents to
'water'
for (int w=0; w<BOARD_WIDTH; ++w){
for (int h=0;
h<BOARD_HEIGHT; ++h){

player[plyr].grid[w][h] = isWATER;
}}
//Loop back to next player
}
}

void DrawBoard(int thisPlayer)
{
//Draws the board for a player (thisPlayer)
cout << "PLAYER " << thisPlayer
<< "'s GAME BOARD
";
cout << "----------------------
";

//Loop through top row (board_width) and number columns
cout << " ";
for (int w=0; w<BOARD_WIDTH; ++w) {
if (w < 10)
//Numbers only 1
character long, add two spaces after
cout << w
<< " ";
else if (w >= 10)
//Numbers 2 characters
long, add only 1 space after
cout << w
<< " ";
}
cout << "
";

//Loop through each grid point and display to console
for (int h=0; h<BOARD_HEIGHT; ++h){
for (int w=0; w<BOARD_WIDTH; ++w){

//If this is the FIRST
(left) grid point, number the grid first
if (w==0) cout
<< h << " ";
//If h was 1 character
long, add an extra space to keep numbers lined up
if (w<10 &&
w==0) cout << " ";
//Display contents of
this grid (if game isn't running yet, we are placing ships
//so display the ships
if (gameRunning ==
false) cout << player[thisPlayer].grid[w][h] << "
";
//Don't show ships,
BUT show damage if it's hit
if (gameRunning ==
true && player[thisPlayer].grid[w][h] != isSHIP)
{cout <<
player[thisPlayer].grid[w][h] << " ";}
else if (gameRunning
== true && player[thisPlayer].grid[w][h] == isSHIP)
{cout << isWATER
<< " ";}
//If we have reached
the border.. line feed
if (w ==
BOARD_WIDTH-1) cout << "
";
}
}
}

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