Add support for printing the time to solve the puzzle if there is a real time clock in the system.

a2sudoku/game.c

@@ -38,6 +38,7 @@ typedef struct tGame {
     struct tPuzzle *puzzle;
     tUpdatePosCallback callback;
     bool undoValid;
+    time_t startTime;
 } tGame;
 
 
@@ -85,6 +86,7 @@ void restartGame(void)
     }
     
     theGame.undoValid = false;
+    theGame.startTime = _systime();
 }
 
 
@@ -107,6 +109,8 @@ void startGame(tDifficulty difficulty, tUpdatePosCallback callback)
             }
         }
     }
+    
+    theGame.startTime = _systime();
 }
 
 
@@ -116,6 +120,12 @@ void saveGame(void)
     if (saveFile != NULL) {
         bool isValid = true;
         fwrite(&isValid, sizeof(isValid), 1, saveFile);
+        
+        // Change the start time into an elapsed time before saving...
+        
+        if (theGame.startTime != 0xffffffff) {
+            theGame.startTime = _systime() - theGame.startTime;
+        }
         fwrite(&theGame, sizeof(theGame), 1, saveFile);
         savePuzzle(theGame.puzzle, saveFile);
         fclose(saveFile);
@@ -176,6 +186,11 @@ bool loadGame(tUpdatePosCallback callback)
     
     theGame.callback = callback;
     
+    // The saved start time is an elapsed time.  Convert it back into a start time relative to now.
+    if (theGame.startTime != 0xffffffff) {
+        theGame.startTime = _systime() - theGame.startTime;
+    }
+    
     theGame.puzzle = loadPuzzle(saveFile);
     
     fclose(saveFile);
@@ -219,6 +234,15 @@ bool isPuzzleSolved(void)
 }
 
 
+time_t timeToSolve(void)
+{
+    if (theGame.startTime == 0xffffffff)
+        return theGame.startTime;
+    
+    return _systime() - theGame.startTime;
+}
+
+
 bool isSquareInvalid(tPos col, tPos row)
 {
     tSquareVal value = SQUARE_XY(col, row).value;

a2sudoku/game.h

@@ -7,6 +7,7 @@
 //
 
 
+#include <time.h>
 #include "puzzles.h"
 
 #ifndef __a2sudoku__game__
@@ -34,6 +35,8 @@ extern void refreshPos(tPos x, tPos y);
 
 extern bool isPuzzleSolved(void);
 
+extern time_t timeToSolve(void);
+
 // Returns false if unable to set the value for some reason
 extern bool setValueAtPos(tPos x, tPos y, tSquareVal val);
 

a2sudoku/ui.c

@@ -10,6 +10,7 @@
 #include <conio.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <tgi.h>
 #include <tgi/tgi-mode.h>
 
@@ -45,9 +46,6 @@ extern char a2e_hi;
                      ((BOARD_SIZE + 1) * THIN_LINE_HEIGHT) + \
                      (((BOARD_SIZE / SUBSQUARE_SIZE) + 1) * (THICK_LINE_HEIGHT - THIN_LINE_HEIGHT)))
 
-#define WON_WIDTH 100
-#define WON_HEIGHT 55
-
 #define SCRATCH_WIDTH 9
 #define SCRATCH_HEIGHT 6
 
@@ -497,18 +495,41 @@ void updatePos(tPos x, tPos y, tSquareVal val, tScratchValues scratch, bool corr
 
 void youWon(void)
 {
-    int wonX = (TOTAL_WIDTH - WON_WIDTH) / 2;
-    int wonY = (TOTAL_HEIGHT - WON_HEIGHT) / 2;
-    char *line1 = "You solved it!";
+    int line1Width;
+    int line2Width;
+    int wonWidth;
+    int wonHeight;
+    int wonX;
+    int wonY;
+    static char line1[80];
     char *line2 = "Press any key";
+    time_t solutionTime = timeToSolve();
     int textHeight = tgi_textheight(line1);
     
+    if (solutionTime == 0xffffffff) {
+        snprintf(line1, sizeof(line1), "You solved it!");
+    } else {
+        snprintf(line1, sizeof(line1), "You solved it in %lu minutes!", solutionTime / 60);
+    }
+    
+    line1Width = strlen(line1) * 6;
+    line2Width = strlen(line2) * 6;
+    
+    wonHeight = textHeight * 7;
+    wonWidth = line1Width;
+    if (wonWidth < line2Width)
+        wonWidth = line2Width;
+    wonWidth += 20;
+    
+    wonX = (TOTAL_WIDTH - wonWidth) / 2;
+    wonY = (TOTAL_HEIGHT - wonHeight) / 2;
+    
     tgi_setcolor(COLOR_BLACK);
-    tgi_bar(wonX, wonY, wonX + WON_WIDTH, wonY + WON_HEIGHT);
+    tgi_bar(wonX, wonY, wonX + wonWidth, wonY + wonHeight);
     
     tgi_setcolor(COLOR_WHITE);
-    tgi_outtextxy(wonX + 10, wonY + (textHeight * 2), line1);
-    tgi_outtextxy(wonX + 7, wonY + (textHeight * 4), line2);
+    tgi_outtextxy((TOTAL_WIDTH - line1Width) / 2, wonY + (textHeight * 2), line1);
+    tgi_outtextxy((TOTAL_WIDTH - line2Width) / 2, wonY + (textHeight * 4), line2);
     
     cgetc();
 }