, mass(1.0)
, size(1.0)
, birth(sim.Time())
-, death(0.0)
+, death(-1.0)
, on_death()
, removable(false)
, parents()
void Creature::Hurt(double amount) noexcept {
stats.Damage().Add(amount);
if (stats.Damage().Full()) {
- std::cout << "[" << ui::TimeString(sim.Time()) << "] " << name << " ";
+ std::ostream &log = sim.Log() << name << " ";
if (stats.Exhaustion().Full()) {
- std::cout << "died of exhaustion";
+ log << "died of exhaustion";
} else if (stats.Breath().Full()) {
- std::cout << "suffocated";
+ log << "suffocated";
} else if (stats.Thirst().Full()) {
- std::cout << "died of thirst";
+ log << "died of thirst";
} else if (stats.Hunger().Full()) {
- std::cout << "starved to death";
+ log << "starved to death";
} else {
- std::cout << "succumed to wounds";
+ log << "succumed to wounds";
}
- std::cout << " at an age of " << ui::TimeString(Age())
+ log << " at an age of " << ui::TimeString(Age())
<< " (" << ui::PercentageString(Age() / properties.Lifetime())
- << "% of life expectancy of " << ui::TimeString(properties.Lifetime())
+ << " of life expectancy of " << ui::TimeString(properties.Lifetime())
<< ")" << std::endl;
Die();
}
}
void Creature::Die() noexcept {
+ if (Dead()) return;
+
sim.SetDead(this);
death = sim.Time();
- steering.Halt();
+ steering.Off();
if (on_death) {
on_death(*this);
}
Remove();
}
+bool Creature::Dead() const noexcept {
+ return death > birth;
+}
+
void Creature::Remove() noexcept {
removable = true;
}
s.GetPlanet(), s.Surface(),
s.Position() + glm::dvec3(0.0, 0.55 * a->Size(), 0.0));
a->BuildVAO();
- std::cout << "[" << ui::TimeString(c.GetSimulation().Time()) << "] "
- << a->Name() << " was born" << std::endl;
+ c.GetSimulation().Log() << a->Name() << " was born" << std::endl;
Creature *b = new Creature(c.GetSimulation());
b->AddParent(c);
s.GetPlanet(), s.Surface(),
s.Position() - glm::dvec3(0.0, 0.55 * b->Size(), 0.0));
b->BuildVAO();
- std::cout << "[" << ui::TimeString(c.GetSimulation().Time()) << "] "
- << b->Name() << " was born" << std::endl;
+ c.GetSimulation().Log() << b->Name() << " was born" << std::endl;
c.Die();
}
Steering::~Steering() {
}
+void Steering::Off() noexcept {
+ separating = false;
+ halting = false;
+ seeking = false;
+ arriving = false;
+}
+
void Steering::Separate(double min_distance, double max_lookaround) noexcept {
separating = true;
min_dist = min_distance;
repulse += normalize(diff) * (1.0 - sep / min_dist);
}
}
- SumForce(result, repulse, force);
+ result += repulse;
}
if (halting) {
// break twice as hard
- SumForce(result, s.vel * force * -2.0, force);
+ result += -2.0 * s.vel * force;
}
if (seeking) {
glm::dvec3 diff = target - s.pos;
if (!allzero(diff)) {
- SumForce(result, TargetVelocity(s, (normalize(diff) * speed), force), force);
+ result += TargetVelocity(s, (normalize(diff) * speed), force);
}
}
if (arriving) {
glm::dvec3 diff = target - s.pos;
double dist = length(diff);
if (!allzero(diff) && dist > std::numeric_limits<double>::epsilon()) {
- SumForce(result, TargetVelocity(s, diff * std::min(dist * force, speed) / dist, force), force);
+ result += TargetVelocity(s, diff * std::min(dist * force, speed) / dist, force);
}
}
- return result;
-}
-
-bool Steering::SumForce(glm::dvec3 &out, const glm::dvec3 &in, double max) const noexcept {
- if (allzero(in) || anynan(in)) {
- return false;
- }
- double cur = allzero(out) ? 0.0 : length(out);
- double rem = max - cur;
- if (rem < 0.0) {
- return true;
- }
- double add = length(in);
- if (add > rem) {
- // this method is off if in and out are in different
- // directions, but gives okayish results
- out += in * (1.0 / add);
- return true;
- } else {
- out += in;
- return false;
+ if (length2(result) > max_force * max_force) {
+ result = normalize(result) * max_force;
}
+ return result;
}
glm::dvec3 Steering::TargetVelocity(const Situation::State &s, const glm::dvec3 &vel, double acc) const noexcept {