Tetris mysl

#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include "primlib.h"
#include "pieces.inl"

#define SQUARE_SIZE 20
#define GAME_WIDTH 15
#define GAME_HEIGHT 20
#define MOVING_PIECE_COLOR MAGENTA
#define STATIC_PIECE_COLOR BLUE
#define PICES_TIME 20000
#define SLEEP 3
#define ARENA_FRAME_COLOUR WHITE
#define GROUND_COLOR BLACK

int isPossible(int area[GAME_WIDTH][GAME_HEIGHT][3], int x, int y, char piece[4][4], char move);
int play(int area[GAME_WIDTH][GAME_HEIGHT][3], int x, int y, char whichPiece[4][4][4]);
void startingPiecePosition(int area [GAME_WIDTH][GAME_HEIGHT][3], int x, int y, char thatPiece[4][4], enum color colour);
void updatingState(int area [GAME_WIDTH][GAME_HEIGHT][3], char nextPiece [4][4]);
void endingGame();
void checkingBoundry();


void drawingStaticPices(int area [GAME_WIDTH][GAME_HEIGHT][3], char nextPiece [4][4]);
void drawingnextPices(int area [GAME_WIDTH][GAME_HEIGHT][3], char nextPiece [4][4]);

//------global variables ---------//
int xLeftUpperCordinate = 100;
int yLeftUpperCordinate = 65;

int main ()
{
    int columnCounter;
    int rowCounter;
    int area[GAME_WIDTH][GAME_HEIGHT][3];
    int whichPiece;
    int nextPiece;

    initGraph();

    for(columnCounter = 0; columnCounter < GAME_WIDTH; columnCounter++)
    {
        for(rowCounter=0;rowCounter<GAME_HEIGHT;rowCounter++)
        {
            area [columnCounter][rowCounter][0] = xLeftUpperCordinate + columnCounter * SQUARE_SIZE;
            area [columnCounter][rowCounter][1] = yLeftUpperCordinate + rowCounter * SQUARE_SIZE;
            area [columnCounter][rowCounter][2] = 0;
        }
    }
    whichPiece = (int)rand()%7;

    while(1)
    {
        nextPiece = (int)rand()%7;
        updatingState(area, pieces[nextPiece][0]);
        updateScreen();
        if(isPossible(area, (GAME_WIDTH / 2) - 1, 0, pieces[whichPiece][0], '0') == 0)
        {
            endingGame();
            break;
        }
        startingPiecePosition(area, (GAME_WIDTH / 2) - 1, 0, pieces[whichPiece][0], MOVING_PIECE_COLOR);
        updateScreen();

        if(play(area,(GAME_WIDTH / 2) - 1, 0, pieces[whichPiece]) == 0)
        {
            endingGame();
            break;
        }
        whichPiece = nextPiece;
    }
    updateScreen();
    return 0;
}

void checkingBoundry()
{
    if(GAME_WIDTH < 10 || GAME_WIDTH > 20)
    {
        printf("Invalid GAME_WIDTH \n");
        exit(3);
    }

    if(GAME_HEIGHT < 10 || GAME_HEIGHT >20)
    {
        printf("Invalid GAME_HEIGHT\n");
        exit(3);
    }
}


int isPossible(int area[GAME_WIDTH][GAME_HEIGHT][3], int x,int y,char piece[4][4], char move)
{
    int columnCounter;
    int rowCounter;

    switch(move)
    {
        case('l'):
            x--;
            break;
        case('r'):
            x++;
            break;
        case('d'):
            y++;
            break;
        case('0'):
            break;
    };

    if(x < 0 || x >= GAME_WIDTH || y >= GAME_HEIGHT)
    {
        return 0;
    }

    for(columnCounter = 0; columnCounter < 4; columnCounter++)
    {
        for(rowCounter = 0 ; rowCounter < 4; rowCounter++)
        {
            if(piece[columnCounter][rowCounter]!= 0 && (x + columnCounter >= GAME_WIDTH || y + rowCounter >= GAME_HEIGHT))
            {

                return 0; //piece out of the game area
            }
            if ((piece[columnCounter][rowCounter]!= 0) && (area[x + columnCounter][y + rowCounter][2]!= 0))
            {
                return 0; // piece reaches the non-empty place
            }
        }
    }

    return 1;
}


int play(int area[GAME_WIDTH][GAME_HEIGHT][3], int x, int y, char whichPiece[4][4][4])
{
    int columnCounter;
    int rowCounter;
    int turnCounter;
    int rotation = 0;

    while(1)
    {
        for(turnCounter = 0; turnCounter < 10; turnCounter++) //10moves 0.1s each,gives 1s time for the movement downward
        {
            if(isKeyDown('e') == 1) return 0; // to quit the game
            switch(pollkey())
            {
                case(SDLK_DOWN):
                    while(isPossible(area, x, y, whichPiece[rotation], 'd') == 1)
                    {
                        startingPiecePosition(area, x, y, whichPiece[rotation], GROUND_COLOR);
                        y++;
                        startingPiecePosition(area, x, y, whichPiece[rotation], MOVING_PIECE_COLOR);
                        updateScreen();
                    }
                    goto storingPices;

                case(SDLK_RIGHT):
                    if(isPossible(area, x, y, whichPiece[rotation], 'r') == 1)
                    {
                        startingPiecePosition(area, x, y, whichPiece[rotation], GROUND_COLOR);
                        x++;
                        startingPiecePosition(area, x, y, whichPiece[rotation], MOVING_PIECE_COLOR);
                        updateScreen();
                    }break;
                case(SDLK_LEFT):
                    if(isPossible(area, x, y, whichPiece[rotation],'l') == 1)
                    {
                        startingPiecePosition(area, x, y, whichPiece[rotation], GROUND_COLOR);
                        x--;
                        startingPiecePosition(area, x, y, whichPiece[rotation], MOVING_PIECE_COLOR);
                        updateScreen();
                    }break;
                case(SDLK_SPACE):
                    if(isPossible(area, x, y, whichPiece[(rotation + 1) % 4],'0'))
                    {
                        startingPiecePosition(area, x, y, whichPiece[rotation], GROUND_COLOR);
                        ++rotation;
                        rotation %= 4;
                        startingPiecePosition(area, x, y, whichPiece[rotation], MOVING_PIECE_COLOR);
                        updateScreen();
                    }
                    /* 'else-if' checks if the movement to right or left enables the rotation */
                    else if (isPossible(area, x - 1, y, whichPiece[(rotation + 1) % 4],'0'))
                    {
                        startingPiecePosition(area,x , y, whichPiece[rotation], GROUND_COLOR);
                        ++rotation;
                        rotation %= 4;
                        x--;
                        startingPiecePosition(area, x, y, whichPiece[rotation], MOVING_PIECE_COLOR);
                        updateScreen();
                    }
                    else if (isPossible(area, x+1, y, whichPiece[(rotation + 1) % 4], '0'))
                    {
                        startingPiecePosition(area, x, y, whichPiece[rotation], GROUND_COLOR);
                        ++rotation;
                        rotation %= 4;
                        x++;
                        startingPiecePosition(area, x, y, whichPiece[rotation], MOVING_PIECE_COLOR);
                        updateScreen();
                    }
                    break;
            };
            usleep(PICES_TIME);
        }
        if(isPossible(area, x, y, whichPiece[rotation],'d') == 1)
        {
            startingPiecePosition(area, x, y,whichPiece[rotation], GROUND_COLOR);
            y++; //not accelerated down
            startingPiecePosition(area, x, y, whichPiece[rotation], MOVING_PIECE_COLOR);
            updateScreen();
        }
        else break;
    }
storingPices:
    for(columnCounter = 0; columnCounter < 4; columnCounter++)
    {
        for(rowCounter = 0;rowCounter < 4; rowCounter++)
        {
            if(whichPiece[rotation][columnCounter][rowCounter] != 0)
            {
                area[x+columnCounter][y+rowCounter][2] = STATIC_PIECE_COLOR;
            }
        }
    }
    return 1;
}


void updatingState(int area [GAME_WIDTH][GAME_HEIGHT][3], char nextPiece [4][4])
{

    filledRect(0, 0, screenWidth() - 1, screenHeight() - 1, GROUND_COLOR);

    textout(0, 10, "Use arrows on your keyboard to move the piece and space to rotate it.", ARENA_FRAME_COLOUR);
    textout(0, 20, "To Accelerate the pice press downn arrow.TO END THE GAME PRESS 'e'", ARENA_FRAME_COLOUR);


    filledRect(xLeftUpperCordinate - 5, yLeftUpperCordinate, xLeftUpperCordinate - 1, yLeftUpperCordinate + (GAME_HEIGHT * SQUARE_SIZE) + 4,
               ARENA_FRAME_COLOUR);

    filledRect(xLeftUpperCordinate, yLeftUpperCordinate + (GAME_HEIGHT * SQUARE_SIZE), xLeftUpperCordinate + (GAME_WIDTH * SQUARE_SIZE) - 1,
               yLeftUpperCordinate + (GAME_HEIGHT * SQUARE_SIZE) + 4, ARENA_FRAME_COLOUR);

    filledRect(xLeftUpperCordinate + (GAME_WIDTH * SQUARE_SIZE), yLeftUpperCordinate, xLeftUpperCordinate + (GAME_WIDTH*SQUARE_SIZE) + 4,
               yLeftUpperCordinate + (GAME_HEIGHT * SQUARE_SIZE) + 4, ARENA_FRAME_COLOUR);


    drawingStaticPices( area [GAME_WIDTH][GAME_HEIGHT][3], nextPiece [4][4]);
    drawingnextPices(area [GAME_WIDTH][GAME_HEIGHT][3], nextPiece [4][4]);
}


void drawingStaticPices(int area[GAME_WIDTH][GAME_HEIGHT][3], char nextPiece [4][4])
{
    int columnCounter;
    int rowCounter;

    for(columnCounter = 0; columnCounter < GAME_WIDTH; columnCounter++)
    {
        for(rowCounter = 0; rowCounter < GAME_HEIGHT; rowCounter++)
        {
           filledRect(area[columnCounter][rowCounter][0] + 1, area[columnCounter][rowCounter][1] + 1,
                      area[columnCounter][rowCounter][0] + SQUARE_SIZE - 2, area[columnCounter][rowCounter][1] + SQUARE_SIZE - 2,
                      area[columnCounter][rowCounter][2]);
        }
    }
}


void drawingnextPices( int area [GAME_WIDTH][GAME_HEIGHT][3], char nextPiece [4][4])
{
    int columnCounter;
    int rowCounter;

    for(columnCounter = 0; columnCounter < 4; columnCounter++)
    {
        for(rowCounter = 0; rowCounter < 4; rowCounter++)
        {
            if (nextPiece[columnCounter][rowCounter]!= 0)
            {
                filledRect(area[columnCounter][rowCounter][0] + (GAME_WIDTH * SQUARE_SIZE) + 11, area[columnCounter][rowCounter][1] + 11,
                           area[columnCounter][rowCounter][0] + (GAME_WIDTH * SQUARE_SIZE) + 28, area[columnCounter][rowCounter][1] + 28,
                           MOVING_PIECE_COLOR);
            }
       }
    }
}


void startingPiecePosition(int area [GAME_WIDTH][GAME_HEIGHT][3],int x,int y,char piece[4][4],enum color colour)// enum is the keyword to declare a new enumeration type. color is the tag name that you can use later as a type name.
{
    int columnCounter;
    int rowCounter;

    for(columnCounter = 0; columnCounter < 4; columnCounter++)
    {
        for(rowCounter = 0;rowCounter < 4; rowCounter++)
        {
            if(piece[columnCounter][rowCounter] != 0) /*draws pices of when their colour is other than black */
            {
                filledRect(area[x + columnCounter][y + rowCounter][0] + 1, area[x + columnCounter][y + rowCounter][1] + 1,
                           area[x + columnCounter][y + rowCounter][0] + SQUARE_SIZE - 2, area[x + columnCounter][y + rowCounter][1] + SQUARE_SIZE - 2, colour);
            }
        }
    }
}


void endingGame()
{

    filledRect(0, 0,screenWidth() - 1, screenHeight() -1, GROUND_COLOR);
    updateScreen();
    sleep(SLEEP);
}