Function MeleeHitOk

Descent3/AImain.cpp:2272–2352

#define AI_AVE_MELEE_TIME .45f

bool MeleeHitOk(object *obj) {
  ai_frame *ai_info = obj->ai_info;
  vector intp;
  float col_dist;
  int num_attacks = 0;
  float delay = 0.0f;
  const int ai_movement = ai_info->movement_type;
  polyobj_info *p_info = &obj->rtype.pobj_info;
  float time_left;

  if (p_info->anim_end_frame != p_info->anim_start_frame) {
    float time_per_frame = p_info->anim_time / ((float)p_info->anim_end_frame - (float)p_info->anim_start_frame);

    time_left = time_per_frame * (p_info->anim_end_frame - p_info->anim_frame);
  } else {
    time_left = 0.0f;
  }

  vector relative_vel;
  vector g_end_pos;

  object *target = ObjGet(ai_info->target_handle);

  if (target == NULL || ai_info->dist_to_target_perceived > 100.0f) {
    return false;
  }

  float dist = vm_VectorDistance(&obj->pos, &target->pos);

  if (dist <= AI_MAX_MELEE_RANGE) {
    return true;
  }

  if (ai_info->flags & AIF_MELEE1) {
    num_attacks++;
    delay += Object_info[obj->id].anim[ai_movement].elem[AS_MELEE1].spc;
  }

  if (ai_info->flags & AIF_MELEE2) {
    num_attacks++;
    delay += Object_info[obj->id].anim[ai_movement].elem[AS_MELEE2].spc;
  }

  if (!num_attacks) {
    return false;
  } else if (num_attacks > 1) {
    delay = delay / (float)num_attacks;
  }

  delay += time_left + Frametime;

  // Determines the relative velocities
  if (obj->movement_type == MT_PHYSICS || obj->movement_type == MT_PHYSICS) {
    if (target->movement_type == MT_PHYSICS || target->movement_type == MT_PHYSICS) {
      relative_vel = obj->mtype.phys_info.velocity - target->mtype.phys_info.velocity;
    } else {
      relative_vel = obj->mtype.phys_info.velocity;
    }