Rename colum.c to column.c

src/column.c

@@ -0,0 +1,51 @@
+// randomly choose from remaining available columns to drop next brick into
+int new_column() {
+	totcol_avail = 0;
+	for (i = 0; i < 8; i++) {
+		for (j = 0; j < 18; j++) {
+			if (grid[0][j][i] == 0) { colcnt[i]++;}		// count empty spaces in each column
+		}
+	}
+	for (i = 0; i < 8; i++) {
+		if (colcnt[i] > 2) {totcol_avail++;}			// count total available columns
+	}
+	if (totcol_avail == 0) {
+		printf("game over\n");} else {				// no more columns available
+			randc = randombytes_uniform(totcol_avail) + 0;	// choose random number from available columns
+			int avl = -1;
+			for (i = 0; randc != avl; i++) {		// translate random num from avail column to actual column
+				if (colcnt[i] > 2) {avl++;}
+			actual_col = i;					// might need to move this down to next brace
+			}
+		}
+	return actual_col;						// return the random column
+}
+
+
+//  display brick in relevant row/column of board array
+int disp_column(int row, int col) {
+	for (i = 0; i < 3; i++) {
+		grid[0][row + i][col] = tile_current[i];
+		return 0;
+	}
+}
+
+// generate random 3 tile bricks for current and preview
+int new_brick () {
+	for (i = 0; i < 3; i++) {
+		tile_current[i] = randombytes_uniform(5) + 1;	// brick in play
+		tile_next[i] = randombytes_uniform(5) + 1;	// next brick preview
+	}
+	return 0;
+}
+
+// rotate (cycle) tiles in brick by 1
+int rotate_col (void)
+{
+	int temp;
+	temp = tile_current[0];
+	tile_current[0] = tile_current[1];
+	tile_current[1] = tile_current[2];
+	tile_current[2] = temp;
+	return 0;
+}