tictactoe.c
Language: C
Last Modified: 2020-06-27 1:58:34 PM UTC
File Size: 10987 bytes
Last Modified: 2020-06-27 1:58:34 PM UTC
File Size: 10987 bytes
http://www.penguinstew.ca/example/tictactoe/tictactoe.c
#include <windows.h>
#define SIZE 3
#define NONE 0
#define X 1
#define O 2
#define CAT 3
#define BOARD_SIZE 100*SIZE
#define STATUS_SIZE 100
#define PADDING 10
#define WHITE RGB(255,255,255)
#define BLACK RGB(0,0,0)
#define GREY RGB(200,200,200)
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
int checkBoard(int board[SIZE][SIZE]);
void drawCross(HDC hdc);
void drawSquare(HDC hdc, int x, int y, int player, COLORREF colour);
void drawStatus(HDC hdc, int gameOver, int currentTurn, int score[3]);
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd) {
static TCHAR szAppName[] = TEXT("tictactoe");
HWND hwnd;
MSG msg;
WNDCLASS wndclass;
//populate the window class struct
wndclass.style = CS_HREDRAW | CS_VREDRAW;
wndclass.lpfnWndProc = WndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 0;
wndclass.hInstance = hInstance;
wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wndclass.lpszMenuName = NULL;
wndclass.lpszClassName = szAppName;
//Register the class
if(!RegisterClass(&wndclass)){
MessageBox(NULL, TEXT("Class registration failed"),
szAppName, MB_ICONERROR);
return 0;
}
//Create and show the window
hwnd = CreateWindow(szAppName, TEXT("Tic Tac Toe"),
WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_BORDER,
CW_USEDEFAULT, CW_USEDEFAULT,
(BOARD_SIZE + PADDING*2 + 6), (BOARD_SIZE + STATUS_SIZE + PADDING*3 + 26),
NULL, NULL, hInstance, NULL);
ShowWindow(hwnd, nShowCmd);
UpdateWindow(hwnd);
//Message loop
while (GetMessage(&msg, NULL, 0, 0)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return (int)msg.wParam;
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) {
static int cState[SIZE][SIZE];
static int cLastPositionX;
static int cLastPositionY;
static int currentTurn;
static int score[3];
static int gameOver;
static int cxBlock, cyBlock;
HDC hdc;
int x, y;
PAINTSTRUCT ps;
switch(message) {
case WM_CREATE:
//Get the square size
cxBlock = BOARD_SIZE / SIZE;
cyBlock = BOARD_SIZE / SIZE;
//Setup the starting position
cLastPositionX = -1;
cLastPositionY = -1;
//Setup the starting player
currentTurn = X;
//Setup the starting score
score[NONE] = 0;
score[X] = 0;
score[O] = 0;
gameOver = NONE;
//Set all squares to be empty
for(x = 0 ; x < SIZE ; x++) {
for(y = 0 ; y < SIZE ; y++) {
cState[x][y] = NONE;
}
}
return 0;
case WM_LBUTTONDOWN:
//Find the square clicked on
x = (LOWORD(lParam)-PADDING) / cxBlock;
y = (HIWORD(lParam)-PADDING) / cyBlock;
//Make sure square is valid6
x = min(x,SIZE-1);
y = min(y,SIZE-1);
hdc = GetDC(hwnd);
//If the game isn't over
if(gameOver == NONE) {
//If the last position is not set
if(cState[cLastPositionX][cLastPositionY] == NONE) {
//Clear the last position
drawSquare(hdc,cLastPositionX,cLastPositionY,currentTurn,WHITE);
}
//If the current position is not set
if(cState[x][y] == NONE) {
//Set the current position to the current player
drawSquare(hdc,x,y,currentTurn,BLACK);
cState[x][y] = currentTurn;
//Check if the game is over
gameOver = checkBoard(cState);
//Toggle the current turn
if(currentTurn == X){
currentTurn = O;
}else {
currentTurn = X;
}
//If the game is over increase the score of the winner
switch (gameOver) {
case X:
score[X]++;
break;
case O:
score[O]++;
break;
case CAT:
score[NONE]++;
break;
}
//Update the status message
drawStatus(hdc,gameOver,currentTurn,score);
}
} else {
//If the game is over reset the board
gameOver = NONE;
for(x = 0 ; x < SIZE ; x++) {
for(y = 0 ; y < SIZE ; y++) {
cState[x][y] = NONE;
}
}
cLastPositionX = -1;
cLastPositionY = -1;
currentTurn = X;
//Redraw
InvalidateRect(hwnd,NULL, TRUE);
}
ReleaseDC(hwnd,hdc);
return 0;
case WM_MOUSEMOVE:
x = (LOWORD(lParam)-PADDING) / cxBlock;
y = (HIWORD(lParam)-PADDING) / cyBlock;
x = min(x,SIZE-1);
y = min(y,SIZE-1);
hdc = GetDC(hwnd);
//If the game isn't over
if(gameOver == NONE) {
//If the position has changed square
if(cLastPositionX != x || cLastPositionY != y) {
//If the last position is not set
if(cState[cLastPositionX][cLastPositionY] == NONE) {
//Clear the last position
drawSquare(hdc,cLastPositionX,cLastPositionY,currentTurn,WHITE);
}
//If the current position is not set
if(cState[x][y] == NONE) {
//Display the ghost
drawSquare(hdc,x,y,currentTurn,GREY);
}
}
}
cLastPositionX = x;
cLastPositionY = y;
ReleaseDC(hwnd,hdc);
return 0;
case WM_PAINT:
hdc = BeginPaint(hwnd, &ps);
//draw cross
drawCross(hdc);
//Loop through the grid and display and set squares
for(x = 0 ; x < SIZE ; x++) {
for(y = 0 ; y < SIZE ; y++) {
if(cState[x][y] != NONE) {
drawSquare(hdc,x,y,cState[x][y],BLACK);
}
}
}
//If the last position is not set
if(cState[cLastPositionX][cLastPositionY] == NONE) {
//Display the ghost
drawSquare(hdc,cLastPositionX,cLastPositionY,currentTurn,GREY);
}
//Draw the status
drawStatus(hdc,gameOver, currentTurn, score);
EndPaint(hwnd, &ps);
return 0;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hwnd, message, wParam, lParam);
}
//Draw in a square
void drawSquare(HDC hdc, int x, int y, int player, COLORREF colour) {
//Get the square size
int cxBlock = BOARD_SIZE / SIZE;
int cyBlock = BOARD_SIZE / SIZE;
RECT rc;
TCHAR szBuffer[50] = TEXT("");
//Create a rect for the square
rc.left = x*cxBlock + PADDING;
rc.top = y*cyBlock + PADDING;;
rc.right = (x+1)*cxBlock + PADDING;;
rc.bottom = (y+1)*cyBlock + PADDING;
//Create a new font and select it
SelectObject(hdc, CreateFont(90, 0, 0, FW_BOLD, 0, 0, 0, 0,
0, 0, 0, 0, DEFAULT_PITCH, NULL));
//Load the text based on the player
if(player == X) {
wsprintf(szBuffer, TEXT("X"));
} else {
wsprintf(szBuffer, TEXT("O"));
}
//Set the colour
SetTextColor(hdc, colour);
//Draw the X or O in the given colour in the square
DrawText(hdc, szBuffer,-1, &rc, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
//Delete the font
DeleteObject(SelectObject(hdc, GetStockObject(SYSTEM_FONT)));
}
//Draw the game board
void drawCross(HDC hdc) {
//Get the square size
int cxBlock = BOARD_SIZE / SIZE;
int cyBlock = BOARD_SIZE / SIZE;
int i;
SelectObject(hdc, CreatePen(PS_SOLID, 5, 0));
//Virtical
for(i = 1 ; i < SIZE ; i++) {
MoveToEx(hdc,((cxBlock*i)+PADDING),PADDING,NULL);
LineTo(hdc,((cxBlock*i)+PADDING),(BOARD_SIZE+PADDING));
}
//Horizontal
for(i = 1 ; i < SIZE ; i++) {
MoveToEx(hdc,PADDING,((cyBlock*i)+PADDING),NULL);
LineTo(hdc,(BOARD_SIZE+PADDING),((cyBlock*i)+PADDING));
}
DeleteObject(SelectObject(hdc, GetStockObject(BLACK_PEN)));
}
//Draw the status section
void drawStatus(HDC hdc, int gameOver, int currentTurn, int score[3]) {
//Get the square size
int cxBlock = BOARD_SIZE / SIZE;
int cyBlock = BOARD_SIZE / SIZE;
RECT rc;
TCHAR szBuffer[50] = TEXT("");
SelectObject(hdc, CreatePen(PS_SOLID, 5, 0));
//Draw the status box
Rectangle(hdc,PADDING,(BOARD_SIZE+PADDING*2),(BOARD_SIZE+PADDING),(BOARD_SIZE+PADDING*2+STATUS_SIZE));
//Create a new font and select it
SelectObject(hdc, CreateFont(30, 0, 0, FW_BOLD, 0, 0, 0, 0,
0, 0, 0, 0, DEFAULT_PITCH, NULL));
//Determine status message from the current state
switch (gameOver) {
case NONE:
if(currentTurn == X) {
wsprintf(szBuffer, TEXT("It is X's Turn"));
} else {
wsprintf(szBuffer, TEXT("It is O's Turn"));
}
break;
case X:
wsprintf(szBuffer, TEXT("X HAS WON!"));
break;
case O:
wsprintf(szBuffer, TEXT("O HAS WON!"));
break;
case CAT:
wsprintf(szBuffer, TEXT("CAT HAS WON!"));
break;
}
SetTextColor(hdc, BLACK);
rc.left = PADDING*2;
rc.top = (BOARD_SIZE+PADDING*3);
rc.right = BOARD_SIZE;
if(gameOver == NONE) {
rc.bottom = BOARD_SIZE + STATUS_SIZE + PADDING;
} else {
rc.bottom = BOARD_SIZE + (STATUS_SIZE/2) + PADDING;
}
DrawText(hdc, szBuffer,-1, &rc, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
if(gameOver != NONE) {
rc.top = BOARD_SIZE + (STATUS_SIZE/2) + PADDING;
rc.bottom = BOARD_SIZE + STATUS_SIZE + PADDING;
wsprintf(szBuffer, TEXT("CAT - %i, X - %i, O - %i"), score[NONE], score[X], score[O]);
DrawText(hdc, szBuffer,-1, &rc, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
}
DeleteObject(SelectObject(hdc, GetStockObject(SYSTEM_FONT)));
DeleteObject(SelectObject(hdc, GetStockObject(BLACK_PEN)));
}
int checkBoard(int board[SIZE][SIZE]) {
int current = -1;
int x;
int y;
//Check columns
for(x = 0 ; x < SIZE ; x++) {
for(y = 0 ; y < SIZE ; y++) {
if(y == 0) {
current = board[x][y];
} else if(current != board[x][y]) {
current = -1;
break;
}
}
if(current > 0) {
return current;
}
}
//Check rows
for(y = 0 ; y < SIZE ; y++) {
for(x = 0 ; x < SIZE ; x++) {
if(x == 0) {
current = board[x][y];
} else if(current != board[x][y]) {
current = -1;
break;
}
}
if(current > 0) {
return current;
}
}
//Check diagonal
for(y = 0 ; y < SIZE ; y++) {
if(y == 0) {
current = board[y][y];
} else if(current != board[y][y]) {
current = -1;
break;
}
}
if(current > 0) {
return current;
}
for(y = 0 ; y < SIZE ; y++) {
if(y == 0) {
current = board[y][SIZE-y-1];
} else if(current != board[y][SIZE-y-1]) {
current = -1;
break;
}
}
if(current > 0) {
return current;
}
//Check cat
for(x = 0 ; x < SIZE ; x++) {
for(y = 0 ; y < SIZE ; y++) {
if(board[x][y] == NONE) {
return NONE;
}
}
}
return CAT;
}
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