/** * @brief Check whether ent can reaction fire at target, i.e. that it can see it and neither is dead etc. * @param[in] ent The entity that might be firing * @param[in] target The entity that might be fired at * @return @c true if 'ent' can actually fire at 'target', @c false otherwise */ static bool G_ReactionFireIsPossible (Edict *ent, const Edict *target) { /* an entity can't reaction fire at itself */ if (ent == target) return false; /* Don't react in your own turn */ if (ent->team == level.activeTeam) return false; /* ent can't use RF if is in STATE_DAZED (flashbang impact) */ if (G_IsDazed(ent)) return false; if (G_IsDead(target)) return false; /* check ent has reaction fire enabled */ if (!G_IsReaction(ent)) return false; /* check ent has weapon in RF hand */ if (!ent->getHandItem(ent->chr.RFmode.getHand())) { /* print character info if this happens, for now */ gi.DPrintf("Reaction fire enabled but no weapon for hand (name=%s,entnum=%i,hand=%i,fmIdx=%i)\n", ent->chr.name, ent->number, ent->chr.RFmode.getHand(), ent->chr.RFmode.getFmIdx()); G_RemoveReaction(ent); return false; } if (!G_IsVisibleForTeam(target, ent->team)) return false; /* If reaction fire is triggered by a friendly unit * and the shooter is still sane, don't shoot; * well, if the shooter isn't sane anymore... */ if (G_IsCivilian(target) || target->team == ent->team) if (!G_IsShaken(ent) || (float) ent->morale / mor_shaken->value > frand()) return false; /* check in range and visible */ const int spotDist = G_VisCheckDist(ent); if (VectorDistSqr(ent->origin, target->origin) > spotDist * spotDist) return false; const bool frustum = G_FrustumVis(ent, target->origin); if (!frustum) return false; const float actorVis = G_ActorVis(ent->origin, ent, target, true); if (actorVis <= 0.2) return false; /* okay do it then */ return true; }
/** * @brief test if check is visible by from * @param[in] team Living team members are always visible. If this is a negative * number we inverse the team rules (see comments included). In combination with VT_NOFRUSTUM * we can check whether there is any edict (that is no in our team) that can see @c check * @param[in] from is from team @c team and must be a living actor * @param[in] check The edict we want to get the visibility for * @param[in] flags @c VT_NOFRUSTUM, ... */ bool G_Vis (const int team, const Edict* from, const Edict* check, const vischeckflags_t flags) { vec3_t eye; /* if any of them isn't in use, then they're not visible */ if (!from->inuse || !check->inuse) return false; /* only actors and 2x2 units can see anything */ if (!G_IsLivingActor(from) && !G_IsActiveCamera(from)) return false; /* living team members are always visible */ if (team >= 0 && check->getTeam() == team && !G_IsDead(check)) return true; /* standard team rules */ if (team >= 0 && from->getTeam() != team) return false; /* inverse team rules */ if (team < 0 && check->getTeam() == -team) return false; /* check for same pos */ if (VectorCompare(from->pos, check->pos)) return true; if (!G_IsVisibleOnBattlefield(check)) return false; /* view distance check */ const int spotDist = G_VisCheckDist(from); if (VectorDistSqr(from->origin, check->origin) > spotDist * spotDist) return false; /* view frustum check */ if (!(flags & VT_NOFRUSTUM) && !G_FrustumVis(from, check->origin)) return false; /* get viewers eye height */ G_ActorGetEyeVector(from, eye); /* line trace check */ switch (check->type) { case ET_ACTOR: case ET_ACTOR2x2: return G_ActorVis(eye, from, check, false) > ACTOR_VIS_0; case ET_ITEM: case ET_CAMERA: case ET_PARTICLE: return !G_LineVis(eye, check->origin); default: return false; } }
/** * @brief Check whether shooter can see his target well enough * @param[in] shooter The entity that might be firing * @param[in] target The entity that might be fired at */ bool ReactionFire::canSee (const Actor* shooter, const Edict* target) const { if (!G_IsVisibleForTeam(target, shooter->getTeam())) return false; /* check in range and visible */ const int spotDist = G_VisCheckDist(shooter); if (VectorDistSqr(shooter->origin, target->origin) > spotDist * spotDist) return false; const bool frustum = G_FrustumVis(shooter, target->origin); if (!frustum) return false; const float actorVis = G_ActorVis(shooter->origin, shooter, target, true); if (actorVis < 0.1) return false; return true; }