/* Victor Chen
11-2-09
COP 3223 Section 3

Creates a game from a choice of 3: addition, multiplication, factoring
and calculates a score based on time spent on the problems and whether the user
got the question right or wrong
*/



#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#define ADD 1
#define MULT 2

// enabling functions to be called
double arithGame(int max, int quantity, int op);

double factorGame(int max, int quantity);

int numPoints(double timesec);

int menu();

int main(){
    
    int choice, ans;
    int e,f,g;
    int x, y;
    int points = 0;
    srand(time(0));
    
    //prints menu
   ans = menu();
    
   // loops for the correct choice
   while(ans!=4){
      
      // if user selects Arithmetic
      if(ans == 1){
          printf("Would you like, 1)Addition or 2)Multiplication?\n");
          scanf("%d", &g);
          
          printf("What is the maximum number you would like?\n");
          scanf("%d", &e);
          
          printf("How many problems do you want?\n");
          scanf("%d", &f);
          
          int start = time(0);
          
          points= points+arithGame(e,f,g); // returns arithmetic game and calculates points
          }
   
   // if user selects to do Factorial game
   if(ans == 2){
          printf("Enter the maximum value of a factor.\n");
          scanf("%d", &x);
   
          printf("How many factoring problems do you want?\n");
          scanf("%d", &y);
          
          points = points+factorGame(x,y); // returns factorial game and calculates points
          
          }
      
   // if user requests score
   if(ans == 3){
   printf("Your score is %d.\n", points);
   
   }
   
   
   ans = menu();       
   }   
   
   printf("Thank you for playing!\n");
   
    system("PAUSE");
    return 0;

}    


// Precondition: none
//Postcondition: Prints out the menu

int menu(){
    
    int num = 0;
    
    while (num!=1 && num!= 2 && num!=3 && num!=4){
    
    printf("Please make a selection from the following:\n");
    printf("1. Play Arithmetic Game.\n");
    printf("2. Play Factoring Game.\n");
    printf("3. Print Score.\n");
    printf("4. Quit.\n");
    scanf("%d", &num);
    
    if (num!=1 && num!=2 && num!=3 && num!=4)
       printf("Sorry, your choice is invalid, try again.\n");
          
          }
     return num;  
     }


//Precondition: User enters 1
//Postcondition:
double arithGame(int max, int quantity, int op)
{
       int index, value1, value2, response;
       int penalty = 0, score = 0;
       int start = time(0);
        
       // If user choosea Arithmetic Addition
       if(op==ADD)
       {
          for (index = 0; index<quantity; index++)
          {
              value1 = rand()%max+1;
              value2 = rand()%max+1;
              
              printf("What is %d + %d?\n", value1, value2);
              scanf("%d", &response);
              
              if (response == value1+value2)
              {
              printf("Correct, great job!\n");
              }   
              
              else if (response != value1+value2)
              {
              printf("Sorry, that's incorrect, the answer is %d.\n", value1+value2); 
              penalty=penalty+5;
              }    
            
            } 
          }             
          
            
          
          
          // User chooses Arithmetic Multiplication 
          if(op==MULT)
          {
           for(index = 0; index<quantity; index++)
           {
               value1= rand()%max+1;
               value2= rand()%max+1;
               
               printf("What is %d x %d?\n", value1, value2);
               scanf("%d", &response);
              
              // response is equal to the 2 values multiplied
              if(response == value1*value2)
                 {
                 printf("Correct, great job!\n");
                 }
               // value not equal to the 2 values multiplied and adds a penalty to the score
               else if (response != value1*value2)
                 {
                  printf("Sorry, that's incorrect, the answer is %d.\n", value1*value2);         
                  penalty=penalty+5;
                 }
               
              }
           }                                         

 int end = time(0);
 int timespent1 = end - start;
 int timespent2 = (timespent1+penalty)/quantity;
 score = numPoints(timespent2);
 
 printf("You took an average of %d seconds.\n", timespent1);
 printf("Your score for the round is %d.\n", score);
                                 
       
return score;
}
//Precondition: User chooses 2, gives
//Postcondition
double factorGame(int max, int quantity)
{
       int index, value1, value2, ans1, ans2, number;
       int count=0;
       int penalty=0;
       int score;
       int countmeter[quantity];//array for storing the number of tries for each question
       
       int start = time(0);
       
       
       for(index = 0; index<quantity; index++)
       {
        countmeter[index]=0; // number of problems to store into array
       
       value1 = rand()%max+3;
       value2 = rand()%max+3;
       number = value1*value2;
       
       printf("Please factor %d.\n", number);
       scanf("%d %d", &ans1, &ans2);
       count = 0; // starts the count for attempts of problems
       
       
       
       // if answers multiplied do not equal the number at all
       // adds 5 second penalty for every wrong answer to the final time score
       while(ans1*ans2 != number)
         {
         
         printf("Sorry %d x %d does not equal %d.\n", ans1, ans2, number);
         count++;
         scanf("%d %d", &ans1, &ans2);
         penalty = penalty+5;
         }
         
       // If answers entered are not the same as the values that equal the number
       // adds 2 second penalty to the end time score
       if ((ans1!=value1)&&(ans2!=value2))
            {
            count++;
            printf("Sorry that is not the factorization we are looking for.\n");
            scanf("%d %d", &ans1, &ans2);
            penalty = penalty +2;
            }         
            
      // correct answer
      if((ans1==value1) &&(ans2==value2))
            {
            printf("Correct, great job!\n");
            count++;
            printf("You got the factorization in %d guesses.\n", count);
            }
       }
       
 countmeter[index]=count;
 //calculates the timespent playing and also the score to return
 int end = time(0);
 int timespent1 = end - start;
 int timespent2 = (timespent1+penalty)/quantity;
 score = numPoints(timespent2);
 
 printf("You took an average of %d seconds.\n", timespent1);
 printf("Your score for the round is %d.\n", score);

 return score;

}

//Precondition: User gives a value from calculations of time spent in a game.
//Postcondition: Returns a value 1-10 dependant on the users score for the last game.
int numPoints(double timesec){
    
    if(timesec<1)
    return 10;
    
    else if((timesec>= 1)&&(timesec<2))
    return 9;
    
    else if((timesec>=2) && (timesec<3))
    return 8;
    
    else if((timesec>=3) && (timesec<4))
    return 7;
    
    else if((timesec>=4) && (timesec<5))
    return 6;
    
    else if((timesec>=5) && (timesec<6))
    return 5;
    
    else if((timesec>=6) && (timesec<7))
    return 4;
    
    else if ((timesec>=7) && (timesec<8))
    return 3;
    
    else if((timesec>=8) && (timesec<9))
    return 2;
    
    else if((timesec>=9) && (timesec<10))
    return 1;
    
    else if(timesec>=10)
    return 0;
    
}