/*
Purpose: check collision with explosions
Input : friendly missile array enemyMis array and explosions
Returns: nothing
Assume : nothing
*/
void processCollisions(struct missile friendlyMis[], struct missile enemyMis[], struct explosion exp)
{
int i,j;
for (i = 0; i < NUM_MISSILES; i++)
{
if (enemyMis[i].destroyed == FALSE)
{
if (enemyMis[i].currentX < (exp.pX + exp.size * EXPLOSION_MAGNITUDE)
&& enemyMis[i].currentX > (exp.pX - exp.size * EXPLOSION_MAGNITUDE)
&& enemyMis[i].currentY < (exp.pY + exp.size * EXPLOSION_MAGNITUDE)
&& enemyMis[i].currentY > (exp.pY - exp.size * EXPLOSION_MAGNITUDE))
{
reset_positions(&enemyMis[i]);
}
}
}
}
/*
Purpose: animate the enemy missiles and the lines following them
Input : a missile struct, an explosion struct, and the clock
Returns: nothing, but updates the missiles current position, and updates the explosion if necessary
Assume : nothing
*/
void processEnemyMissiles(struct missile *mis, struct explosion *exp, long clock,int speed){
if ((*mis).shortest == -1)
{
calculateLine(mis);
}
if ((*mis).currentX < (*mis).endX || (*mis).currentX > (*mis).endX)
{
getPositions(mis,speed);
}
if ((*mis).currentX == (*mis).endX || (*mis).currentY == (*mis).endY && (*mis).endX != 0)
{
(*mis).destroyed = TRUE;
make_explosion(exp,(*mis).endX,(*mis).endY);
explosion_sound();
reset_positions(&(*mis));
}
}
/*
* brief - Employ Metropolis Monte-Carlo
*/
void apply_metropolis()
{
double eps=0.0, acc=0.0;
if((U_new-U_old) < 0){ // Accept the move
count_acc++;
U = U_new;
}
else{
eps = double(rand())/double(RAND_MAX);
acc = exp(-beta*(U_new-U_old));
if(eps <= acc){ // Accept
count_acc++;
U = U_new;
}
else{ // Reject the move and retain the old positions
reset_positions();
U = U_old;
}
}
}
