In this article, we will continue to look at the recurrence process of Tetris ：

Catalog

Determine if the game is over

  The subject of the game

  Read from file

  Update the highest score

Complete code

Determine if the game is over

Determine if the game is over , utilize for Cycle to judge the results of each time

// Determine if the game is over 
	for ( j = 1; j < COL - 1; j++)
	{
		if (face.data[1][j] == 1) // There are squares on the top （ By the end of 1 Behavior top level , Not the first 0 That's ok ）
		{
			Sleep(1000); // Leave players reaction time 
			system("cls"); // Clear the screen 
			color(7); // Color set to white 
			CursorJump(2 * (COL / 3), ROW / 2 - 3);
			if (grade>max)
			{
				printf(" Congratulations on breaking the record , The highest record was updated to %d", grade);
				WriteGrade();
			}
			else if (grade == max)
			{
				printf(" In line with the record , Come on, make another success ", grade);
			}
			else
			{
				printf(" Please continue refueling , There is a difference between the current record and the highest record %d", max - grade);
			}
			CursorJump(2 * (COL / 3), ROW / 2);
			printf("GAME OVER");
			while (1)
			{
				char ch;
				CursorJump(2 * (COL / 3), ROW / 2 + 3);
				printf(" Another round ?(y/n):");
				scanf("%c", &ch);
				if (ch == 'y' || ch == 'Y')
				{
					system("cls");
					main();
				}
				else if (ch == 'n' || ch == 'N')
				{
					CursorJump(2 * (COL / 3), ROW / 2 + 5);
					exit(0);
				}
				else
				{
					CursorJump(2 * (COL / 3), ROW / 2 + 4);
					printf(" Wrong choice , Please select... Again ");
				}
			}
		}
	}
	return 0; // The judgment is over , There is no need to call this function to judge 
}

  The subject of the game

In the main body of the game, it is mainly about the difficulty of the game , Game keys to write , You can also modify it in the code .

/ Game body logic function 
void StartGame()
{   
    int i,j;
	int shape = rand() % 7, form = rand() % 4; // Randomly obtain the shape and shape of the box 
	while (1)
	{
		int t = 0;
		int nextShape = rand() % 7, nextForm = rand() % 4; // Randomly obtain the shape and shape of the next box 
		int x = COL / 2 - 2, y = 0; // The abscissa and ordinate of the initial falling position of the block 
		color(nextShape); // The color is set to the color of the next box 
		DrawBlock(nextShape, nextForm, COL + 3, 3); // Display the next box in the upper right corner 
		while (1)
		{
			color(shape); // The color is set to the square currently falling 
			DrawBlock(shape, form, x, y); // Display the box at the initial drop position 
			if (t == 0)
			{
				t = 15000; // here t The smaller it is , The faster the box falls （ You can set the game difficulty according to this ）
			}
			while (--t)
			{
				if (kbhit() != 0) // If the keyboard is struck , Then exit the loop 
					break;
			}
			if (t == 0) // The keyboard is not tapped 
			{
				if (IsLegal(shape, form, x, y + 1) == 0) // It's illegal for the box to fall again （ Has reached the bottom ）
				{
					// Enter the information of the current box face among 
					//face: Record whether there are squares at each position of the interface , If there is a box, the color of the box at that position shall also be recorded .
					for ( i = 0; i < 4; i++)
					{
						for ( j = 0; j < 4; j++)
						{
							if (block[shape][form].space[i][j] == 1)
							{
								face.data[y + i][x + j] = 1; // Mark the position as square 
								face.color[y + i][x + j] = shape; // Record the color value of the box 
							}
						}
					}
					while (JudeFunc()); // Judge whether the falling of the box scores and whether the game is over 
					break; // Jump out of the current loop , Get ready to drop the next box 
				}
				else // Not to the bottom 
				{
					DrawSpace(shape, form, x, y); // Overwrite the position of the current square with a space 
					y++; // The ordinate increases automatically （ The next time the box is displayed, it's equivalent to falling a grid ）
				}
			}
			else // The keyboard is struck 
			{
				char ch = getch(); // Read keycode
				switch (ch)
				{
				case DOWN: // Direction key ： Next 
					if (IsLegal(shape, form, x, y + 1) == 1) // Judge whether the box is legal after moving down one bit 
					{
						// After the box falls, the following operations can be performed legally 
						DrawSpace(shape, form, x, y); // Overwrite the position of the current square with a space 
						y++; // The ordinate increases automatically （ The next time the box is displayed, it's equivalent to falling a grid ）
					}
					break;
				case LEFT: // Direction key ： Left 
					if (IsLegal(shape, form, x - 1, y) == 1) // Judge whether the box is legal after moving one bit to the left 
					{
						// The following operations can only be performed after the box is moved to the left 
						DrawSpace(shape, form, x, y); // Overwrite the position of the current square with a space 
						x--; // Abscissa self subtraction （ The next time the box is displayed, it is equivalent to moving one grid to the left ）
					}
					break;
				case RIGHT: // Direction key ： Right 
					if (IsLegal(shape, form, x + 1, y) == 1) // Judge whether the square is legal after moving one bit to the right 
					{
						// The following operations can only be performed after the box is moved to the right 
						DrawSpace(shape, form, x, y); // Overwrite the position of the current square with a space 
						x++; // Abscissa self increasing （ The next time the box is displayed, it's equivalent to moving one grid to the right ）
					}
					break;
				case SPACE: // Space bar 
					if (IsLegal(shape, (form + 1) % 4, x, y + 1) == 1) // Judge whether the box is legal after rotation 
					{
						// The following operations can only be performed after the square is rotated 
						DrawSpace(shape, form, x, y); // Overwrite the position of the current square with a space 
						y++; // The ordinate increases automatically （ You can't spin in place ）
						form = (form + 1) % 4; // The shape of the square increases （ The next time the box is displayed, it's equivalent to rotating ）
					}
					break;
				case ESC: //Esc key 
					system("cls"); // Clear the screen 
					color(7);
					CursorJump(COL, ROW / 2);
					printf("   Game over   ");
					CursorJump(COL, ROW / 2 + 2);
					exit(0); // End procedure 
				case 's':
				case 'S':  // Pause 
					system("pause>nul"); // Pause （ Press any key to continue ）
					break;
				case 'r':
				case 'R': // restart 
					system("cls"); // Clear the screen 
					main(); // Re execute the main function 
				}
			}
		}
		shape = nextShape, form = nextForm; // Get the information of the next box 
		DrawSpace(nextShape, nextForm, COL + 3, 3); // Overwrite the box information in the upper right corner with a space 
	}
}

  Read from file

/ Read the highest score from the file 
void ReadGrade()
{
	FILE* pf = fopen(" The highest score in Tetris .txt", "r"); // Open the file read-only 
	if (pf == NULL) // fail to open file 
	{
		pf = fopen(" The highest score in Tetris .txt", "w"); // Open the file in write only mode （ The file does not exist. You can create it automatically ）
		fwrite(&grade, sizeof(int), 1, pf); // take max write file （ here max by 0）, Initialize the highest historical score to 0
	}
	fseek(pf, 0, SEEK_SET); // Make the file pointer pf Point to the beginning of the file 
	fread(&max, sizeof(int), 1, pf); // Read the highest historical score in the file to max among 
	fclose(pf); // Close file 
	pf = NULL; // The file pointer is set to null in time 
}

  Update the highest score

// Update the highest score to the file 
void WriteGrade()
{
	FILE* pf = fopen(" The highest score in Tetris .txt", "w"); // Open the file in write only mode 
	if (pf == NULL) // fail to open file 
	{
		printf(" Failed to save the highest score record \n");
		exit(0);
	}
	fwrite(&grade, sizeof(int), 1, pf); // Write the game score of this game into the file （ Update the highest historical score ）
	fclose(pf); // Close file 
	pf = NULL; // The file pointer is set to null in time 
}

Reading the highest score from the file and updating the highest score do not affect the integrity of the program , It's mainly about the operation of documents, and I'm not too familiar , It's the partner who completes this part .

Complete code

Next is the complete code , These codes are indeed a little too many with comments , It is presented in the form of links .

http://t.csdn.cn/b3cxe

If you have any questions, please point them out . The next thing will be right opencv To study .