Create Maze game

Maze game

@@ -0,0 +1,117 @@
+Maze
+
+#include 
+#include 
+#include "maze.h"
+
+
+// =============================> Maze Objects <====================
+// Maze object data members:
+//   int _max_row;
+//   int _max_col;
+//   char _map[MAX_MAZE_DIM+1][MAX_MAZE_DIM+1];
+
+// ============================> report_err <=======================
+static void report_err(const char* message)
+{  
+  cout << "FATAL ERROR (Maze): " << message << endl;
+  exit(1);
+}
+
+// ========================> member functions <=====================
+
+// ========================> Constructors <==================
+Maze::Maze()
+{
+  *this = Maze(7,7);
+}
+
+Maze::Maze(int rows, int cols)
+{
+  if (rows > MAX_MAZE_DIM || cols > MAX_MAZE_DIM)
+    report_err("Attempted to create overly large Maze");
+  _max_row = rows;
+  _max_col = cols;
+  for(int row = 1; row <= rows; row++)
+    for(int col = 1; col <= cols; col++)
+      _map[row][col] = '.';
+}
+
+// =======================> max_row <========================
+int Maze::max_row() const
+{ return _max_row;
+}
+
+// ======================> max_col <=========================
+int Maze::max_col() const
+{ return _max_col;
+}
+
+// =====================> is_open <==========================
+int Maze::is_open(int i, int j) const
+// PRE:  VALID_POS(i, j)
+// POST: FCTVAL == position (i, j) of this maze is open (contains a '.')
+{
+   if (i < 1 || i > _max_row)
+   		report_err("Attempted to check cell row outside of maze dimensions");
+
+   if (j < 1 || j > _max_col)
+   		report_err("Attempted to check cell column outside of maze dimensions");
+
+   if (_map[i][j] == '.')	// if current spot in maze is passible
+   		return (1);			//    return 1 ==> TRUE
+   else
+   		return (0);
+}
+
+// ====================> mark <==============================
+void Maze::mark(int row, int col, char marker)
+{
+  if (!is_open(row,col))
+    report_err("Attempt to mark an non-open Maze cell");
+  _map[row][col] = marker;
+}
+
+// ===================> unmark <=============================
+void Maze::unmark(int row, int col)
+// PRE: VALID_POS(row, col) &&
+//      _map[row][col] != '*'
+// POST: is_open(row, col)
+{
+	if (_map[row][col] != '*')
+		_map[row][col] = '.';		// reset current spot in maze to passible
+
+	return;
+}
+
+// ===================> stream output <======================
+ostream& operator<<(ostream& stream, Maze m)
+{ 
+  for(int row = 1; row <= m._max_row; row++)
+    { 
+      for(int col = 1; col <= m._max_col; col++)
+		stream.put(m._map[row][col]);
+      stream << endl;
+    }
+  stream << flush;
+  return stream;
+}
+
+// ==================> stream input <=======================
+istream& operator>>(istream& stream, Maze& m)
+{ char ch;
+
+  for(int row = 1; row <= m._max_row; row++)
+    { 
+      for(int col = 1; col <= m._max_col; col++)
+	{ 
+	  stream.get(ch);
+	  if (ch == '.' || ch == ' ')
+	    m._map[row][col] = '.';
+	  else
+	    m._map[row][col] = '*';
+	}
+      stream.ignore(50,'\n');
+    }
+  return stream;
+}