void choose_direction_for_ghost(char * map, struct pacghost * pacman, struct pacghost * ghost, int difficulty, int is_pacman_powered_up){
if (!is_pacman_powered_up){
if (difficulty == 0){
move_randomly(ghost);
} else if (difficulty == 1){
int random = random_in_range(0,10);
if (random < 5)
move_randomly(ghost);
else
chase_after_pacman(pacman, ghost);
} else if (difficulty == 2){
int random = random_in_range(0,10);
if (random < 2)
move_randomly(ghost);
else
chase_after_pacman(pacman, ghost);
} else {
chase_after_pacman(pacman, ghost);
}
/* The ghost move to the point nearer to him than pacman when pacman powered */
} else {
/* As the point search in order. The ghost tend to stuck when came to top left */
for (int rows = 0; rows < height; rows++) {
for (int cols = 0; cols < width; cols++){
if (isValidMoveCell(rows, cols)){
if (distance_between_two_points(pacman->xLocation,pacman->yLocation,rows,cols) > distance_between_two_points(ghost->xLocation,ghost->yLocation,rows,cols)){
ghost->direction = direction_from_node_to_node(ghost->xLocation,ghost->yLocation,rows,cols);
return;
}
}
}
}
}
}
void do_sierpinski(short unsigned* shm, short unsigned* local,int* n_gen)
{
int x,y;
int des,sin,su;
inuso=P(sem_id,0);
if( (* n_gen) == 0 )
{ // inizializza la matrice con una sola cella viva
for ( y=0; y < N_Y * N_X; ++y ) local[y]=0;
fiat( random_in_range(0,N_X), random_in_range(0,N_Y), local);
++(* n_gen);
} else
{
for( y=0; y < N_Y * N_X; ++y ) local[y]=shm[y];
}
for( y=0; y < N_Y; ++y )
{
for( x=0; x < N_X; ++x )
{
// rendiamo l'universo un toro \m/
if(x==0) sin=N_X-1;
else sin=x-1;
if(x==N_X-1) des=0;
else des=x+1;
if(y==0) su=N_Y-1;
else su=y-1;
switch( get_stato(x,y,local) )
{
case MORTO:
if // XOR
( (get_stato(sin,su,local)==VIVO)
^ (get_stato(des,su,local)==VIVO)
)
fiat(x,y,shm);
else
uccidi(x,y,shm);
break;
case VIVO:
if // condizione da rivedere
( (get_stato(sin,su,local)==VIVO)
&& (get_stato(des,su,local)==VIVO)
)
uccidi(x,y,shm);
else
fiat(x,y,shm);
break;
defaut:
;
break;
}
}
}
++(*n_gen);
inuso=V(sem_id,0);
}
//
// Calculate the random influent each round
//
void RandomInfluent(void) {
Influent.Flow = random_in_range(9, 30) / 10.0;
Influent.Cbod = random_in_range(1900, 4000);
Influent.Tss = random_in_range(2000, 5000);
Influent.Tn = random_in_range(490, 750);
Influent.Tp = random_in_range(75, 150);
}
char *gen_random_str(int min, int max) {
int length = random_in_range(min, max);
char *s = calloc(length);
for(int i=0; i<length - 2; i++) {
s[i] = random_in_range(0x30, 0x7e);
}
return s;
}
Vec3d Particle_source_box::uniform_position_in_cube(
const double xleft, const double ytop, const double zfar,
const double xright, const double ybottom, const double znear,
std::default_random_engine &rnd_gen )
{
return vec3d_init( random_in_range( xright, xleft, rnd_gen ),
random_in_range( ybottom, ytop, rnd_gen ),
random_in_range( znear, zfar, rnd_gen ) );
}
Vec3d Particle_source_cylinder::uniform_position_in_cylinder(
std::default_random_engine &rnd_gen )
{
// random point in cylinder along z
Vec3d cyl_axis = vec3d_init( ( axis_end_x - axis_start_x ),
( axis_end_y - axis_start_y ),
( axis_end_z - axis_start_z ) );
double cyl_axis_length = vec3d_length( cyl_axis );
double x, y, z;
double r, phi;
r = sqrt( random_in_range( 0.0, 1.0, rnd_gen ) ) * radius;
phi = random_in_range( 0.0, 2.0 * M_PI, rnd_gen );
z = random_in_range( 0.0, cyl_axis_length, rnd_gen );
//
x = r * cos( phi );
y = r * sin( phi );
z = z;
Vec3d random_pnt_in_cyl_along_z = vec3d_init( x, y, z );
// rotate:
// see https://en.wikipedia.org/wiki/Rodrigues'_rotation_formula
// todo: Too complicated. Try rejection sampling.
Vec3d random_pnt_in_rotated_cyl;
Vec3d unit_cyl_axis = vec3d_normalized( cyl_axis );
Vec3d unit_along_z = vec3d_init( 0, 0, 1.0 );
Vec3d rotation_axis = vec3d_cross_product( unit_along_z, unit_cyl_axis );
double rotation_axis_length = vec3d_length( rotation_axis );
if ( rotation_axis_length == 0 ) {
if ( copysign( 1.0, vec3d_z( unit_cyl_axis ) ) >= 0 ){
random_pnt_in_rotated_cyl = random_pnt_in_cyl_along_z;
} else {
random_pnt_in_rotated_cyl = vec3d_negate( random_pnt_in_cyl_along_z );
}
} else {
Vec3d unit_rotation_axis = vec3d_normalized( rotation_axis );
double rot_cos = vec3d_dot_product( unit_cyl_axis, unit_along_z );
double rot_sin = rotation_axis_length;
random_pnt_in_rotated_cyl =
vec3d_add(
vec3d_times_scalar( random_pnt_in_cyl_along_z, rot_cos ),
vec3d_add(
vec3d_times_scalar(
vec3d_cross_product( unit_rotation_axis,
random_pnt_in_cyl_along_z ),
rot_sin ),
vec3d_times_scalar(
unit_rotation_axis,
( 1 - rot_cos ) * vec3d_dot_product(
unit_rotation_axis,
random_pnt_in_cyl_along_z ) ) ) );
}
// shift:
Vec3d shifted = vec3d_add( random_pnt_in_rotated_cyl,
vec3d_init( axis_start_x, axis_start_y, axis_start_z ) );
return shifted;
}
static void
allocate_directories(directory_t *dir, unsigned allow_zero)
{
unsigned n_directories = random_in_range(arg_subdirs);
while (!allow_zero && n_directories == 0) {
n_directories = random_in_range(arg_subdirs);
}
dir->n_directories = n_directories;
dir->directories = allocate_directory(n_directories);
}
//This is a super-uniform function, much better than (rand() % max) +min
int random_in_range (unsigned int min, unsigned int max)
{
int base_random = rand(); /* in [0, RAND_MAX] */
if (RAND_MAX == base_random) return random_in_range(min, max); /* now guaranteed to be in [0, RAND_MAX) */
unsigned int range = max - min,
remainder= RAND_MAX % range, // These are range buckets, plus one smaller interval
bucket = RAND_MAX / range; // within remainder of RAND_MAX */
if (base_random < RAND_MAX - remainder)
return min + base_random/bucket;
else
return random_in_range (min, max);
}
void InitFilesystem(void) {
char root_passwd[32];
char secure_passwd[32];
uint8_t i;
const char *rand_page = (const char *)0x4347C000;
bzero(FS, sizeof(FS));
bzero(FH, sizeof(FH));
// generate a random root password
bzero(root_passwd, 32);
for (i = 0; i < 10; i++) {
root_passwd[i] = (char)random_in_range(65,122);
}
root_passwd[i] = '\0';
// generate a random secure user password
bzero(secure_passwd, 32);
for (i = 0; i < 31; i++) {
secure_passwd[i] = (char)random_in_range(65,122);
}
secure_passwd[i] = '\0';
// passwd file
strcpy(FS[0].Filename, "passwd");
strcpy(FS[0].Owner, "root");
strcpy(FS[0].Group, "root");
FS[0].Perms = 0x700;
sprintf(FS[0].Data, "$s:secure:secure\ncrs:crs:crs\n$s:root:root", secure_passwd, root_passwd);
FS[0].Size = cgc_strlen(FS[0].Data);
// confidential data file
strcpy(FS[1].Filename, "confidential");
strcpy(FS[1].Owner, "secure");
strcpy(FS[1].Group, "secure");
FS[1].Perms = 0x700;
// cgc_read starting at 4th byte since we already used the first 4 to seed the prng
// but don't use any 4-byte chunks that have NULL's or newlines
rand_page+=4;
i = 0;
while (i < 4) {
if (*rand_page == '\0' || *rand_page == '\n') {
i = 0;
rand_page++;
continue;
}
FS[1].Data[i++] = *rand_page;
rand_page++;
}
FS[1].Size = 4;
}
void swarm_to_digit(int digit, int start_idx, int end_idx, int offset_x, int offset_y) {
int end = minimum(end_idx, NUM_PARTICLES);
for(int i=start_idx; i<end; i++) {
GBitmap bitmap = *number_bitmaps[digit];
const uint8_t *pixels = bitmap.addr;
// pick a random point in the four image
// get the image
// pick a random number the length of the array
// if the value is zero, pick a differnet number increment until you get there
// move to that position
int image_length = bitmap.row_size_bytes * bitmap.bounds.size.h - 1;
int idx = random_in_range(0, image_length);
uint8_t pixel = pixels[idx];
// guarantee we're on a non-zero byte
while(pixel == 0x00) {
idx = random_in_range(0, image_length);
pixel = pixels[idx];
}
// pick a non-zero bit
int bit_pos = (idx * 8);
int bit_add = random_in_range(0,7);
int tries = 8;
while(!(pixel & (1 << bit_add))) {
if(tries < 0) break;
bit_add = random_in_range(0,7);
tries--;
}
bit_pos += bit_add;
int row_size_bits = bitmap.row_size_bytes * 8;
int pixel_row = bit_pos / row_size_bits;
int pixel_col = bit_pos % row_size_bits;
float scale = 1.0F;
GPoint goal = GPoint(scale*pixel_col+offset_x, scale*pixel_row+offset_y); // switch row & col
particles[i].grav_center = FPoint(goal.x, goal.y);
particles[i].power = TIGHT_POWER;
particles[i].goal_size = random_in_rangef(2.0F, 3.5F);
particles[i].swarming = true;
}
}
int random_in_range (int min, int max){
int base_random = rand(); /* in [0, RAND_MAX] */
if (RAND_MAX == base_random) return random_in_range(min, max);
/* now guaranteed to be in [0, RAND_MAX) */
int range = max - min,
remainder = RAND_MAX % range,
bucket = RAND_MAX / range;
/* There are range buckets, plus one smaller interval
within remainder of RAND_MAX */
if (base_random < RAND_MAX - remainder) {
return min + base_random/bucket;
} else {
return random_in_range (min, max);
}
}
vector<double> PageRank::metodoPotencia() {
int n = A.size();
// creo el x aleatorio
vector<double> x(n, 0);
for (int i = 0; i < n; i++) {
x[i] = random_in_range(1,50);
}
// traspongo x para poder multiplicarlo por A
vector< vector<double> > aux = row2Column(x);
vector< vector<double> > B = multiply(A, A);
vector< vector<double> > C = A;
double delta = phi(column2Row(multiply(B, aux))) / phi(column2Row(multiply(C, aux)));
double last_delta = INFINITY;
while (fabs(delta - last_delta) > precision) {
C = B;
B = multiply(B, A);
last_delta = delta;
delta = phi(column2Row(multiply(B, aux))) / phi(column2Row(multiply(C, aux)));
}
vector<double> v = column2Row(multiply(B, aux));
return scaleVector(v, 1/norma1(v));
}
int main() {
int x, i, arr[100];
while ((x<=0) || (x>=10)) {
pritnf("Vavedete x: ");
scanf("%d", &x);
}
for(i=0; i<100; i++) {
arr[i]=random_in_range (0,100);
printf("%d ", arr[i]);
}
printf("\n End of Random Numbers \n");
int z, n, f, m=0;
for(n=0; n<10; n++) {
for(i=0; i<100; i++) {
z=x+10*n;
if (arr[i] == z) {
f=arr[m];
arr[m]=arr[i];
arr[i]=f;
m=m+1;
}
}
}
for(i=0; i<100; i++) {
printf("%d ", arr[i]);
}
printf("\n");
}
static void
allocate_sources(directory_t *dir)
{
const unsigned n_sources = random_in_range(arg_sources);
dir->n_sources = n_sources;
dir->sources = allocate_source(n_sources);
}
static unsigned int random_in_range(unsigned int min, unsigned int max)
{
int base_random = rand();
if (RAND_MAX == base_random) {
return random_in_range(min, max);
}
unsigned int range = max - min;
unsigned int remainder = RAND_MAX % range;
unsigned int bucket = RAND_MAX / range;
if ((unsigned int) base_random < RAND_MAX - remainder) {
return min + ((unsigned int) base_random / bucket);
}
return random_in_range(min, max);
}
int random_in_range(int min, int max)
{
int base_random = rand();
if(RAND_MAX == base_random) return random_in_range(min, max);
int range = max - min;
int remainder = RAND_MAX % range;
int bucket = RAND_MAX / range;
if(base_random < RAND_MAX - remainder)
{
return min + base_random/bucket;
}
else
{
return random_in_range(min, max);
}
}
// Shuffle the deck using the Knuth shuffle agorithm with array initialization
void shuffle(standard_deck *deck)
{
for (int i=0; i<SIZE_OF_DECK; i++)
{
int j = random_in_range(0, i);
deck->deck[i] = deck->deck[j];
// Initialize array with the numbers 1 to 52
deck->deck[j] = (char)(i + 1);
}
deck->top = 0;
}
static Location
enemy_random_location (void)
{
Location location;
location.x = get_random_location ().x;
location.y = random_in_range (25, 100);
return location;
}
void test_random_port_in_range() {
jnx_term_printf_in_color(JNX_COL_WHITE, "\ttest_random_port_in_range(): ");
int i, count = 10, min = 10000, max = 20000, current;
for (i = 0; i < count; i++) {
current = random_in_range(min, max);
assert(min <= current && current <= max);
}
jnx_term_printf_in_color(JNX_COL_GREEN, "Pass\n");
}
void
calculate_grid_backtrack(void)
{
int next_cell;
for (int m = 0; m < 9; m++) {
for (int n = 0; n < 9; n++) {
next_cell = (int)random_in_range(9);
insert_cell(m, n, next_cell);
}
}
}
static Acceleration
enemy_random_acceleration ()
{
Acceleration acceleration = {1.5, 0.5};
//50% of enemy ships will go accelerate to the other side(heading towards up)
if (random_in_range (0, 2)) acceleration.y *= -1;
return acceleration;
}
user *gen_random_user() {
user *new_user = calloc(sizeof(user));
new_user->name = gen_random_str(5, 32);
char *hn = gen_random_str(5, 32);
strcpy(new_user->hostname, hn);
free(hn);
new_user->idletime = rand() & 0xffffff;
new_user->realname = gen_random_str(5, 64);
new_user->phone = gen_random_str(9,9);
new_user->online = random_in_range(0,1);
return new_user;
}
uint32_t AddConnection(CGCRPC_Endpoint *endpoint)
{
for (int i=0; i < MAX_CGCRPC_CONNECTIONS; i++)
{
if (connections[i].bindID == 0)
{
connections[i].bindID = random_in_range(1, 0xffffffff);
connections[i].endpoint = endpoint;
return connections[i].bindID;
}
}
return 0;
}
static void add_texture(int x, int y, gal_uint8 color)
{
Texture *t;
t = (Texture *) malloc(sizeof(Texture));
t->mid_x = x << 16;
t->mid_y = y << 16;
t->millis = 0;
t->color = color;
t->speed = speed + (fixed_speed ? 0 : random_in_range(-(speed/2), +(speed/2)));
t->succ = texture_list;
texture_list = t;
}
address *pick_address() {
int i = 0;
address *next = abook->root;
while (next != NULL) {
i++;
next = next->next;
}
int pick = random_in_range(0, i-1);
next = abook->root;
while (next->next != NULL && pick > 0) {
next = next->next;
pick--;
}
return next;
}
void
init_enemies (void)
{
int i;
ALLEGRO_BITMAP *shared_enemy_ship_image = al_load_bitmap ("assets/png/enemyShip.png");
for (i = 0; i < NUM_ENEMIES; i++)
{
enemies[i].health_pts = ENEMY_HP;
enemies[i].location = enemy_random_location ();
enemies[i].live = 0;
enemies[i].follow_player = random_in_range (0, 2); //50% will follow the player
enemies[i].acceleration = enemy_random_acceleration ();
enemies[i].image = shared_enemy_ship_image;
enemies[i].puller = NULL;
}
}
address *add_random_addressbook_entry() {
address *a = calloc(sizeof(address));
a->name = gen_random_string(5, 32);
a->home_server = gen_random_string(5, 32);
a->mode = random_in_range(0,1);
address *n = abook->root;
if (n == NULL) {
// First Entry
abook->root = a;
} else {
while (n->next != NULL) {
n = n->next;
}
n->next = a;
}
abook->num_entries++;
return a;
}
int sort_one(int a[], int length, int left, int right)
{
if (a == NULL || length <= 0 || left < 0 || right >= length) {
return -1; /* error */
}
int index = random_in_range(left, right);
swap(&a[index], &a[right]);
int small = left - 1;
for (index = left; index < right; index++) {
if (a[index] < a[right]) {
small++;
if (small != index)
swap(&a[small], &a[index]);
}
}
small++;
swap(&a[small], &a[right]);
return small;
}
void move_randomly(struct pacghost * ghost) {
int availableWay = ghost_map[ghost->xLocation * width + ghost->yLocation] - '0';
int count = 0;
if (availableWay >= 3 || !(canMove(ghost))) {
int random = random_in_range(0,availableWay);
if (isValidMoveCell(ghost->xLocation-1,ghost->yLocation)){
if (count != random){
count++;
} else {
ghost->direction = 0;
count++;
}
}
if (isValidMoveCell(ghost->xLocation,ghost->yLocation+1)){
if (count != random){
count++;
} else {
ghost->direction = 1;
count++;
}
}
if (isValidMoveCell(ghost->xLocation+1,ghost->yLocation)){
if (count != random){
count++;
} else {
ghost->direction = 2;
count++;
}
}
if (isValidMoveCell(ghost->xLocation,ghost->yLocation-1)){
if (count != random)
count++;
else
ghost->direction = 3;
}
}
}
vector<double> PageRankEsparso::metodoPotencia() {
int n = A.size();
// creo el x aleatorio
vector<double> x(n, 0);
for (int i = 0; i < n; i++) {
x[i] = random_in_range(1,50);
}
// creo el v aleatorio
vector<double> v(n, double(1)/double(n));
vector<double> y = x;
double delta = INFINITY;
double last_delta;
do {
x = y;
y = scaleVector(multiplyEsparso(A, x), teletransportacion);
double w = norma1(x) - norma1(y);
y = sumVector(y, scaleVector(v, w));
last_delta = delta;
delta = phi(y) / phi(x);
} while (fabs(delta - last_delta) > precision);
return scaleVector(y, 1/norma1(y));
}