add field_check

src/main/duellist-spielesammlung-projekt.c

@@ -214,6 +214,85 @@ void show_minefield(char** minefield, int height, int width) {
     printf("\n\n");
 }
 
+int field_check(char** minefield, char** mines, int height, int width, int row, int column) {
+    char counter = 0;
+
+    if ((row < 0) || (row >= height) || (column < 0) || (column >= width)) {
+        printf("Exception: Outside the minefield!\n");
+        return -1;
+    }
+    // If there is a mine at this position
+    if (mines[row][column] == 1) {
+        return 0;
+    }
+
+    // If there is no mine at the position, count how many mines are around it
+    if ((row + 1 < height) && (mines[row + 1][column] == 1)) {
+        counter++;
+    }
+    if ((row - 1 >= 0) && (mines[row - 1][column] == 1)) {
+        counter++;
+    }
+    if ((column + 1 < width) && (mines[row][column + 1] == 1)) {
+        counter++;
+    }
+    if ((column - 1 >= 0) && (mines[row][column - 1] == 1)) {
+        counter++;
+    }
+    if ((row + 1 < height) && (column - 1 >= 0) && (mines[row + 1][column - 1] == 1)) {
+        counter++;
+    }
+    if ((row - 1 >= 0) && (column + 1 < width) && (mines[row - 1][column + 1] == 1)) {
+        counter++;
+    }
+    if ((row + 1 < height) && (column + 1 < width) && (mines[row + 1][column + 1] == 1)) {
+        counter++;
+    }
+    if ((row - 1 >= 0) && (column - 1 >= 0) && (mines[row - 1][column - 1] == 1)) {
+        counter++;
+    }
+
+    minefield[row][column] = 48 + counter;
+
+    if (counter > 0) {
+        return 1;
+    }
+
+    if ((row + 1 < height) && (minefield[row + 1][column] == unknown_character) && (mines[row + 1][column] == 0)) {
+        field_check(minefield, mines, height, width, row + 1, column);
+    }
+
+    if ((row - 1 >= 0) && (minefield[row - 1][column] == unknown_character) && (mines[row - 1][column] == 0)) {
+        field_check(minefield, mines, height, width, row - 1, column);
+    }
+
+    if ((column + 1 < width) && (minefield[row][column + 1] == unknown_character) && (mines[row][column + 1] == 0)) {
+        field_check(minefield, mines, height, width, row, column + 1);
+    }
+
+    if ((column - 1 >= 0) && (minefield[row][column - 1] == unknown_character) && (mines[row][column - 1] == 0)) {
+        field_check(minefield, mines, height, width, row, column - 1);
+    }
+
+    if ((row + 1 < height) && (column - 1 >= 0) && (minefield[row + 1][column - 1] == unknown_character) && (mines[row + 1][column - 1] == 0)) {
+        field_check(minefield, mines, height, width, row + 1, column - 1);
+    }
+
+    if ((row - 1 >= 0) && (column + 1 < width) && (minefield[row - 1][column + 1] == unknown_character) && (mines[row - 1][column + 1] == 0)) {
+        field_check(minefield, mines, height, width, row - 1, column + 1);
+    }
+
+    if ((row + 1 < height) && (column + 1 < width) && (minefield[row + 1][column + 1] == unknown_character) && (mines[row + 1][column + 1] == 0)) {
+        field_check(minefield, mines, height, width, row + 1, column + 1);
+    }
+
+    if ((row - 1 >= 0) && (column - 1 >= 0) && (minefield[row - 1][column - 1] == unknown_character) && (mines[row - 1][column - 1] == 0)) {
+        field_check(minefield, mines, height, width, row - 1, column - 1);
+    }
+
+    return 1;
+}
+
 int minesweeper() {
     int height, width, row, column;
     printf("Enter the height of the game field:\n");