Added gui text input and output and OS switch

Dirent is only partially ported to windows. I created a windows load
function that has no filtering of file extensions. The function I wrote
for windows should compile and work on linux as well.

Author: zeroDecoder

gui.h

@@ -12,6 +12,7 @@
 #include "mazeBase.h"
 #include <opencv2/core/core.hpp>
 #include <opencv2/highgui/highgui.hpp>
+#include<string>
 
 using namespace cv;
 
@@ -21,6 +22,60 @@ struct callbackWrapper
 	Mat *img;
 };
 
+void clearUiInputArea(Mat *img)
+{
+	rectangle(*img,Point(0,MAZE_HEIGHT_PX-PX_PER_UNIT), Point(MAZE_WIDTH_PX,MAZE_HEIGHT_PX), CV_RGB(0,0,0),CV_FILLED);
+}
+
+void clearUiPrintArea(Mat *img)
+{
+	rectangle(*img,Point(0,0), Point(MAZE_WIDTH_PX,MAZE_HEIGHT_PX-PX_PER_UNIT), CV_RGB(0,0,0),CV_FILLED);
+}
+
+int cvPrint(Mat *img, std::string text)
+{
+	static int lineNum =0;
+	if(!text.compare(""))
+	{
+		lineNum =0;
+		clearUiPrintArea(img);
+	}
+	else if(lineNum++ < GUI_MAXLINE) //if there's space print the line and increment the line number
+	{
+		putText(*img, text.c_str(), Point(0,lineNum*PX_PER_UNIT), FONT_HERSHEY_SIMPLEX, 1,
+					CV_RGB(0,0,255), 2);
+	}
+	else
+	{
+		return -1; //if the line wasn't printed return -1
+	}
+	return lineNum;
+}
+
+std::string cvIn(Mat *img)
+{
+	char inputKey;
+	std::string inputString ("");
+
+	while((inputKey = waitKey(100)) != '\r' && cvGetWindowHandle(DISPLAY_WINDOW_NAME))
+	{
+		if (inputKey != -1)
+		{
+			if (inputKey == '\b')
+			{
+				if (inputString.size() > 0)
+					inputString.resize(inputString.size() - 1);
+			} else
+				inputString += inputKey;
+		}
+		//redraw text
+		clearUiInputArea(img);
+		putText(*img, inputString, UI_INPUT_LOCATION, FONT_HERSHEY_SIMPLEX, 1,
+				CV_RGB(0,0,255), 2);
+		imshow(DISPLAY_WINDOW_NAME, *img);
+	}
+	return inputString;
+}
 
 void redrawMaze(Mat *img, struct baseMapNode startNode[][MAZE_HEIGHT], struct mouseData *mouse)
 {
@@ -273,8 +328,6 @@ void mouseCallBackFunc(int event, int x, int y, int flags, void* ptr)
 				}
 				data->startNode[(int)(x/PX_PER_UNIT)][(int)((MAZE_HEIGHT_PX-y)/PX_PER_UNIT)].wallRight = false;
 				data->startNode[(int)(x/PX_PER_UNIT)][(int)((MAZE_HEIGHT_PX-y)/PX_PER_UNIT)].right = &(data->startNode[(int)(x/PX_PER_UNIT)+1][(int)((MAZE_HEIGHT_PX-y)/PX_PER_UNIT)]);
-
-
 			}
 			else
 			{

mazeConst.h

@@ -22,6 +22,10 @@
 #define MOUSE_OUTLINE_THICKNESS 9
 #define MOUSE_RADIUS 7
 
+#define UI_INPUT_LOCATION Point(0,MAZE_HEIGHT_PX-PX_PER_UNIT/4)
+#define GUI_MAXLEN 40
+#define GUI_MAXLINE 18
+
 #define TOP 0
 #define RIGHT 1
 #define BOTTOM 2

mmSim.cpp

@@ -6,14 +6,19 @@
 // Description : Micro mouse simulation software for SFHS robotics students
 //============================================================================
 
+
 #include"mazeBase.h"
 #include"mazeConst.h"
 #include"gui.h"
 #include"studentAi.h"
 
+#define win32 1
+
+#include <dirent.h>
 #include<iostream>
 #include <string>
-#include <dirent.h>
+
+
 
 using namespace cv;
 
@@ -49,6 +54,9 @@ int main()
 
 	//create game board
 	Mat image(MAZE_WIDTH*PX_PER_UNIT, MAZE_HEIGHT*PX_PER_UNIT, CV_8UC3, Scalar(0,0,0));
+	Mat guiText(MAZE_WIDTH*PX_PER_UNIT, MAZE_HEIGHT*PX_PER_UNIT, CV_8UC3, Scalar(0,0,0));
+
+	namedWindow( DISPLAY_WINDOW_NAME, WINDOW_NORMAL);
 	redrawMaze(&image, start);
 
 	//create mouse call back
@@ -66,29 +74,70 @@ int main()
 	std::cout << "Left click to add a wall"<<endl;
 	std::cout << "Right click to remove a wall"<<endl;
 
-
 	while((userInput =waitKey(1))!= 'q')
 	{
-		if(userInput == 's')
+
+		if (!cvGetWindowHandle(DISPLAY_WINDOW_NAME))//if window is closed clean up and exit
+		{
+			break;
+		}
+		else if (userInput == 's')
 		{
-			string input; const char* c_input;
-			
+			string input;
+
 			//save file
 			cout << "Enter filename to save to (without extension): ";
-			cin >> input; 
+			cvPrint(&guiText,"Enter filename to save to (without extension): " );
+			input = cvIn(&guiText);
 			input.append(".maz");
-			c_input = input.c_str();
-			
-			mazeFile = fopen(c_input, "w");
+
+			mazeFile = fopen(input.c_str(), "w");
 			if(mazeFile == NULL)
 			{
 				exit(100);
 			}
 			saveMaze2File(mazeFile, start);
 			fclose(mazeFile);
+			redrawMaze(&image, start);
 		}
 		else if(userInput == 'l')
 		{
+#ifdef win32
+			DIR *local = opendir(".");
+			struct dirent *dircontents = readdir(local);
+			int selection;
+			std::ostringstream buff ("");
+
+			do{
+				buff << telldir(local) << ": " << dircontents->d_name;
+				cvPrint(&guiText,buff.str());
+				cout << buff.str() <<endl;
+				buff.str("");
+				buff.clear();
+				dircontents = readdir(local);
+			}while(dircontents != NULL);
+
+			do {
+				cout << endl << "Select file to load: " << endl;
+				selection = atoi(cvIn(&guiText).c_str());
+				rewinddir(local);
+				seekdir(local, selection - 1);
+				dircontents = readdir(local);
+
+				if(!cvGetWindowHandle(DISPLAY_WINDOW_NAME)) break; //if the user closed the window break
+			} while (dircontents == NULL || dircontents->d_type != 0);
+			cvPrint(&guiText, "");
+			mazeFile = fopen(dircontents->d_name, "r");
+			if(mazeFile == NULL)
+			{
+				exit(101);
+			}
+			readMazeFromFile(mazeFile, start);
+			cout << "Maze loaded" << endl;
+
+			fclose(mazeFile);
+			redrawMaze(&image, start);
+#else
 		  struct dirent **dircontents;
 		  string choices[20];
 		  int dirnum, selection;
@@ -104,7 +153,7 @@ int main()
 		      cout << i << ") " << choices[i] << endl;
 		    }
 		  }
-		  
+
 		  cout << endl;
 
 		  //load file
@@ -124,8 +173,9 @@ int main()
 
 		  else
 		    cout << "Invalid selection, try another action" << endl;
+#endif
 		}
-		
+
 		else if(userInput == 'r')
 		{
 			//reset maze area
@@ -146,7 +196,7 @@ int main()
 			}
 			cout << "The AI says the mouse has finished the maze!"<<endl;
 		}
-	}
 
+	}
 	return 0;
-}
+}