MOVE

Type:

Example (lite-C):

// helper function: sets the vector to random direction and length
function vec_randomize(var* vec,var range)
{
  vec[0] = random(1) - 0.5;
  vec[1] = random(1) - 0.5;
  vec[2] = random(1) - 0.5;
  vec_normalize(vec,random(range));
}

// helper function: fades out a particle
function part_alphafade(PARTICLE* p)
{
  p.alpha -= 2*time_step;
  if (p.alpha <= 0) p.lifespan = 0; // remove particle when faded out
}

//particle function: generates a fading explosion into vel direction
function effect_explo(PARTICLE* p)
{
  VECTOR v;
  vec_randomize(v,10);
  vec_add(p.vel_x,v);
  set(p,TRANSLUCENT|BEAM|BRIGHT|MOVE);
  p.alpha = 25 + random(25);
  p.bmap = scatter_tga;
  p.event = part_alphafade;	// change to a shorter, faster function
}

...
vec_scale(normal,10); // produce an explosion into the normal direction
effect(effect_explo,1000,my.x,normal);

See also: