#include #include #include #include using namespace std; const int MAX_SIZE = 35; int maze[MAX_SIZE][MAX_SIZE]; int currentPositionOfAnimals[6][2]; void display2D(){ for (int i = 0; i < MAX_SIZE; i++) { for (int j = 0; j < MAX_SIZE; j++) { if (maze[i][j])cout << maze[i][j]; else cout << \".\"; cout << \" \"; } cout << \"\ \"; } } // initially put the animals in random position in the maze void allocateInitially(){ time_t t; srand((unsigned)time(&t)); // assign the 6 animals for (int i = 1; i <= 6; ++i){ // get the random x value int x = rand() % MAX_SIZE; //get the random y value int y = rand() % MAX_SIZE; // if previously allotted try again for (int j = 1; j < i; ++j){ if (currentPositionOfAnimals[j][0] == x && currentPositionOfAnimals[j][1] == y){ --i; continue; } } maze[x][y] = i; // save the current position of animals which could be use for chasing currentPositionOfAnimals[i][0] = x; currentPositionOfAnimals[i][1] = y; } } void chase(){ int newPos[6][2];// calculate new position of animals for (int i = 0; i < 6; ++i){ int j = (i + 1) % 6; int x = currentPositionOfAnimals[j + 1][0] - currentPositionOfAnimals[i + 1][0]; int y = currentPositionOfAnimals[j + 1][1] - currentPositionOfAnimals[i + 1][1]; if (x) x /= abs(x); if (y) y /= abs(y); //eight possible directions int absX = abs(x), absY = abs(y); int dir[] = { -1, 0, 0, 1, 0, -1, 1, 0, -1, -1, -1, 1, 1, -1, 1, 1 }; x += currentPositionOfAnimals[i + 1][0]; y += currentPositionOfAnimals[i + 1][1]; // cross the boundary of maze if (x >= MAX_SIZE || x < 0 || y >= MAX_SIZE || y < 0 || (absX == 0 && absY == 0)){ for (int delta = 0; delta < 16; delta += 2){ x = currentPositionOfAnimals[i + 1][0] + dir[delta]; y = currentPositionOfAnimals[i + 1][1] + dir[delta + 1]; //crossed the boundary then continue different location if (x >= MAX_SIZE || x < 0 || y >= MAX_SIZE || y < 0)continue; // there is already an animal on that place then continue for different location for (int mmj = 0; mmj < 6; ++mmj){ if (currentPositionOfAnimals[mmj][0] == x && currentPositionOfAnimals[mmj][1] == y)continue; } break; } } else{ for (int mm = 0; mm < i; ++mm){ if (currentPositionOfAnimals[mm][0] == x && currentPositionOfAnimals[mm][1] == y){ for (int delta = 0; delta < 16; delta += 2){ x = currentPositionOfAnimals[i + 1][0] + dir[delta]; y = currentPositionOfAnimals[i + 1][1] + dir[delta + 1]; //crossed the boundary then continue different location if (x >= MAX_SIZE || x < 0 || y >= MAX_SIZE || y < 0)continue; // there is already an animal on that place then continue for different location for (int mmj = 0; mmj < 6; ++mmj){ if (currentPositionOfAnimals[mmj][0] == x && currentPositionOfAnimals[mmj][1] == y)continue; } break; } break; } } } newPos[i + 1][0] = x; newPos[i + 1][1] = y; maze[x][y] = i + 1; } // re assign the current positions of the animals for (int i = 1; i <= 6; ++i){ currentPositionOfAnimals[i][0] = newPos[i][0]; currentPositionOfAnimals[i][1] = newPos[i][1]; } } int main(){ allocateInitially();// put .

1. #include
#include
#include
#include
using namespace std;
const int MAX_SIZE = 35;
int maze[MAX_SIZE][MAX_SIZE];
int currentPositionOfAnimals[6][2];
void display2D(){
for (int i = 0; i < MAX_SIZE; i++)
{
for (int j = 0; j < MAX_SIZE; j++)
{
if (maze[i][j])cout << maze[i][j];
else cout << ".";
cout << " ";
}
cout << " ";
}
}
// initially put the animals in random position in the maze
void allocateInitially(){
time_t t;
srand((unsigned)time(&t));
// assign the 6 animals
for (int i = 1; i <= 6; ++i){
// get the random x value
int x = rand() % MAX_SIZE;
//get the random y value
int y = rand() % MAX_SIZE;
// if previously allotted try again
for (int j = 1; j < i; ++j){
if (currentPositionOfAnimals[j][0] == x && currentPositionOfAnimals[j][1] == y){
--i;
continue;

2. }
}
maze[x][y] = i;
// save the current position of animals which could be use for chasing
currentPositionOfAnimals[i][0] = x;
currentPositionOfAnimals[i][1] = y;
}
}
void chase(){
int newPos[6][2];// calculate new position of animals
for (int i = 0; i < 6; ++i){
int j = (i + 1) % 6;
int x = currentPositionOfAnimals[j + 1][0] - currentPositionOfAnimals[i + 1][0];
int y = currentPositionOfAnimals[j + 1][1] - currentPositionOfAnimals[i + 1][1];
if (x)
x /= abs(x);
if (y)
y /= abs(y);
//eight possible directions
int absX = abs(x), absY = abs(y);
int dir[] = { -1, 0, 0, 1, 0, -1, 1, 0, -1, -1, -1, 1, 1, -1, 1, 1 };
x += currentPositionOfAnimals[i + 1][0];
y += currentPositionOfAnimals[i + 1][1];
// cross the boundary of maze
if (x >= MAX_SIZE || x < 0 || y >= MAX_SIZE || y < 0
|| (absX == 0 && absY == 0)){
for (int delta = 0; delta < 16; delta += 2){
x = currentPositionOfAnimals[i + 1][0] + dir[delta];
y = currentPositionOfAnimals[i + 1][1] + dir[delta + 1];
//crossed the boundary then continue different location
if (x >= MAX_SIZE || x < 0 || y >= MAX_SIZE || y < 0)continue;
// there is already an animal on that place then continue for different location
for (int mmj = 0; mmj < 6; ++mmj){
if (currentPositionOfAnimals[mmj][0] == x && currentPositionOfAnimals[mmj][1] ==
y)continue;

3. }
break;
}
}
else{
for (int mm = 0; mm < i; ++mm){
if (currentPositionOfAnimals[mm][0] == x && currentPositionOfAnimals[mm][1] == y){
for (int delta = 0; delta < 16; delta += 2){
x = currentPositionOfAnimals[i + 1][0] + dir[delta];
y = currentPositionOfAnimals[i + 1][1] + dir[delta + 1];
//crossed the boundary then continue different location
if (x >= MAX_SIZE || x < 0 || y >= MAX_SIZE || y < 0)continue;
// there is already an animal on that place then continue for different location
for (int mmj = 0; mmj < 6; ++mmj){
if (currentPositionOfAnimals[mmj][0] == x && currentPositionOfAnimals[mmj][1] ==
y)continue;
}
break;
}
break;
}
}
}
newPos[i + 1][0] = x;
newPos[i + 1][1] = y;
maze[x][y] = i + 1;
}
// re assign the current positions of the animals
for (int i = 1; i <= 6; ++i){
currentPositionOfAnimals[i][0] = newPos[i][0];
currentPositionOfAnimals[i][1] = newPos[i][1];
}
}
int main(){
allocateInitially();// put the animal in the maze
// do at least 20 iterations

4. for (int i = 0; i < 20; ++i){
system("cls"); // if max or linux use this
//system("cls"; // if windows then use this
display2D(); // display the movements of the animals
chase(); // chase other animals
}
return 0;
}
Please help. Did i do something wrong? i couldnt debug my program. There is an error message
said the newPos is corrupted ?
Solution
#include
#include
#include
#include // you needed to add this for srand. Now it works perfectly!!
#include
using namespace std;
const int MAX_SIZE = 35;
int maze[MAX_SIZE][MAX_SIZE];
int currentPositionOfAnimals[6][2];
void display2D(){
for (int i = 0; i < MAX_SIZE; i++)
{
for (int j = 0; j < MAX_SIZE; j++)
{
if (maze[i][j])cout << maze[i][j];
else cout << ".";
cout << " ";
}
cout << " ";
}
}
// initially put the animals in random position in the maze
void allocateInitially(){

5. time_t t;
srand((unsigned)time(&t));
// assign the 6 animals
for (int i = 1; i <= 6; ++i){
// get the random x value
int x = rand() % MAX_SIZE;
//get the random y value
int y = rand() % MAX_SIZE;
// if previously allotted try again
for (int j = 1; j < i; ++j){
if (currentPositionOfAnimals[j][0] == x && currentPositionOfAnimals[j][1] == y){
--i;
continue;
}
}
maze[x][y] = i;
// save the current position of animals which could be use for chasing
currentPositionOfAnimals[i][0] = x;
currentPositionOfAnimals[i][1] = y;
}
}
void chase(){
int newPos[6][2];// calculate new position of animals
for (int i = 0; i < 6; ++i){
int j = (i + 1) % 6;
int x = currentPositionOfAnimals[j + 1][0] - currentPositionOfAnimals[i + 1][0];
int y = currentPositionOfAnimals[j + 1][1] - currentPositionOfAnimals[i + 1][1];
if (x)
x /= abs(x);
if (y)
y /= abs(y);
//eight possible directions
int absX = abs(x), absY = abs(y);
int dir[] = { -1, 0, 0, 1, 0, -1, 1, 0, -1, -1, -1, 1, 1, -1, 1, 1 };
x += currentPositionOfAnimals[i + 1][0];

6. y += currentPositionOfAnimals[i + 1][1];
// cross the boundary of maze
if (x >= MAX_SIZE || x < 0 || y >= MAX_SIZE || y < 0
|| (absX == 0 && absY == 0)){
for (int delta = 0; delta < 16; delta += 2){
x = currentPositionOfAnimals[i + 1][0] + dir[delta];
y = currentPositionOfAnimals[i + 1][1] + dir[delta + 1];
//crossed the boundary then continue different location
if (x >= MAX_SIZE || x < 0 || y >= MAX_SIZE || y < 0)continue;
// there is already an animal on that place then continue for different location
for (int mmj = 0; mmj < 6; ++mmj){
if (currentPositionOfAnimals[mmj][0] == x && currentPositionOfAnimals[mmj][1] ==
y)continue;
}
break;
}
}
else{
for (int mm = 0; mm < i; ++mm){
if (currentPositionOfAnimals[mm][0] == x && currentPositionOfAnimals[mm][1] == y){
for (int delta = 0; delta < 16; delta += 2){
x = currentPositionOfAnimals[i + 1][0] + dir[delta];
y = currentPositionOfAnimals[i + 1][1] + dir[delta + 1];
//crossed the boundary then continue different location
if (x >= MAX_SIZE || x < 0 || y >= MAX_SIZE || y < 0)continue;
// there is already an animal on that place then continue for different location
for (int mmj = 0; mmj < 6; ++mmj){
if (currentPositionOfAnimals[mmj][0] == x && currentPositionOfAnimals[mmj][1] ==
y)continue;
}
break;
}
break;
}
}
}

7. newPos[i + 1][0] = x;
newPos[i + 1][1] = y;
maze[x][y] = i + 1;
}
// re assign the current positions of the animals
for (int i = 1; i <= 6; ++i){
currentPositionOfAnimals[i][0] = newPos[i][0];
currentPositionOfAnimals[i][1] = newPos[i][1];
}
}
int main(){
allocateInitially();// put the animal in the maze
// do at least 20 iterations
for (int i = 0; i < 20; ++i){
system("cls"); // if max or linux use this
//system("cls"; // if windows then use this
display2D(); // display the movements of the animals
chase(); // chase other animals
}
return 0;
}