src/creature/creature.cpp

   1 #include "Composition.hpp"
   2 #include "Creature.hpp"
   3 #include "Genome.hpp"
   4 #include "Memory.hpp"
   5 #include "NameGenerator.hpp"
   6 #include "Situation.hpp"
   7 #include "Steering.hpp"
   8
   9 #include "BlobBackgroundTask.hpp"
  10 #include "Goal.hpp"
  11 #include "IdleGoal.hpp"
  12 #include "../app/Assets.hpp"
  13 #include "../math/const.hpp"
  14 #include "../ui/string.hpp"
  15 #include "../world/Body.hpp"
  16 #include "../world/Planet.hpp"
  17 #include "../world/Simulation.hpp"
  18 #include "../world/TileType.hpp"
  19
  20 #include <algorithm>
  21 #include <sstream>
  22 #include <glm/gtx/transform.hpp>
  23 #include <glm/gtx/vector_angle.hpp>
  24
  25 #include <iostream>
  26 #include <glm/gtx/io.hpp>
  27
  28
  29 namespace blobs {
  30 namespace creature {
  31
  32 Composition::Composition()
  33 : components()
  34 , total_mass(0.0) {
  35 }
  36
  37 Composition::~Composition() {
  38 }
  39
  40 namespace {
  41 bool CompositionCompare(const Composition::Component &a, const Composition::Component &b) {
  42         return b.value < a.value;
  43 }
  44 }
  45
  46 void Composition::Add(int res, double amount) {
  47         bool found = false;
  48         for (auto c = components.begin(); c != components.end(); ++c) {
  49                 if (c->resource == res) {
  50                         c->value += amount;
  51                         if (c->value <= 0.0) {
  52                                 components.erase(c);
  53                         }
  54                         found = true;
  55                         break;
  56                 }
  57         }
  58         if (!found && amount > 0.0) {
  59                 components.emplace_back(res, amount);
  60         }
  61         std::sort(components.begin(), components.end(), CompositionCompare);
  62         total_mass += amount;
  63 }
  64
  65 bool Composition::Has(int res) const noexcept {
  66         for (auto &c : components) {
  67                 if (c.resource == res) {
  68                         return true;
  69                 }
  70         }
  71         return false;
  72 }
  73
  74 double Composition::Get(int res) const noexcept {
  75         for (auto &c : components) {
  76                 if (c.resource == res) {
  77                         return c.value;
  78                 }
  79         }
  80         return 0.0;
  81 }
  82
  83
  84 Creature::Creature(world::Simulation &sim)
  85 : sim(sim)
  86 , name()
  87 , genome()
  88 , properties()
  89 , composition()
  90 , base_color(1.0)
  91 , highlight_color(0.0, 0.0, 0.0, 1.0)
  92 , mass(1.0)
  93 , size(1.0)
  94 , birth(sim.Time())
  95 , death(-1.0)
  96 , on_death()
  97 , removable(false)
  98 , parents()
  99 , stats()
 100 , memory(*this)
 101 , bg_task()
 102 , goals()
 103 , situation()
 104 , steering(*this)
 105 , vao() {
 106         sim.SetAlive(this);
 107         // all creatures avoid each other for now
 108         steering.Separate(0.1, 1.5);
 109 }
 110
 111 Creature::~Creature() {
 112 }
 113
 114 void Creature::AddMass(int res, double amount) {
 115         composition.Add(res, amount);
 116         double nonsolid = 0.0;
 117         double volume = 0.0;
 118         for (const auto &c : composition) {
 119                 volume += c.value / sim.Assets().data.resources[c.resource].density;
 120                 if (sim.Assets().data.resources[c.resource].state != world::Resource::SOLID) {
 121                         nonsolid += c.value;
 122                 }
 123         }
 124         Mass(composition.TotalMass());
 125         Size(std::cbrt(volume));
 126         highlight_color.a = nonsolid / composition.TotalMass();
 127 }
 128
 129 void Creature::HighlightColor(const glm::dvec3 &c) noexcept {
 130         highlight_color = glm::dvec4(c, highlight_color.a);
 131 }
 132
 133 void Creature::Ingest(int res, double amount) noexcept {
 134         // TODO: check foreign materials
 135         if (sim.Resources()[res].state == world::Resource::SOLID) {
 136                 // 15% of solids stays in body
 137                 AddMass(res, amount * 0.15);
 138         } else {
 139                 // 10% of fluids stays in body
 140                 AddMass(res, amount * 0.05);
 141         }
 142         math::GaloisLFSR &random = sim.Assets().random;
 143         if (random.UNorm() < AdaptChance()) {
 144                 // change color to be slightly more like resource
 145                 glm::dvec3 color(rgb2hsl(sim.Resources()[res].base_color));
 146                 // solids affect base color, others highlight
 147                 double p = sim.Resources()[res].state == world::Resource::SOLID ? 0 : 1;
 148                 double q = random.UInt(3); // hue, sat, or val
 149                 double r = random.UInt(2); // mean or deviation
 150                 math::Distribution *d = nullptr;
 151                 double ref = 0.0;
 152                 if (p == 0) {
 153                         if (q == 0) {
 154                                 d = &genome.base_hue;
 155                                 ref = color.x;
 156                         } else if (q == 1) {
 157                                 d = &genome.base_saturation;
 158                                 ref = color.y;
 159                         } else {
 160                                 d = &genome.base_lightness;
 161                                 ref = color.z;
 162                         }
 163                 } else {
 164                         if (q == 0) {
 165                                 d = &genome.highlight_hue;
 166                                 ref = color.x;
 167                         } else if (q == 1) {
 168                                 d = &genome.highlight_saturation;
 169                                 ref = color.y;
 170                         } else {
 171                                 d = &genome.highlight_lightness;
 172                                 ref = color.z;
 173                         }
 174                 }
 175                 if (r == 0) {
 176                         double diff = ref - d->Mean();
 177                         if (q == 0) {
 178                                 if (diff < -0.5) {
 179                                         diff += 1.0;
 180                                 } else if (diff > 0.5) {
 181                                         diff -= 1.0;
 182                                 }
 183                                 // move ±15% of distance
 184                                 d->Mean(std::fmod(d->Mean() + diff * random.SNorm() * 0.15, 1.0));
 185                         } else {
 186                                 d->Mean(glm::clamp(d->Mean() + diff * random.SNorm() * 0.15, 0.0, 1.0));
 187                         }
 188                 } else {
 189                         // scale by ±15%, enforce bounds
 190                         d->StandardDeviation(glm::clamp(d->StandardDeviation() * (1.0 + random.SNorm() * 0.15), 0.0001, 0.5));
 191                 }
 192         }
 193 }
 194
 195 void Creature::DoWork(double amount) noexcept {
 196         stats.Exhaustion().Add(amount / Stamina());
 197         // burn resources proportional to composition
 198         // factor = 1/total * 1/efficiency * amount * -1
 199         double factor = -amount / (composition.TotalMass() * EnergyEfficiency());
 200         // make a copy to total remains constant and
 201         // no entries disappear during iteration
 202         Composition comp(composition);
 203         for (auto &cmp : comp) {
 204                 double value = cmp.value * factor * sim.Resources()[cmp.resource].inverse_energy;
 205                 AddMass(cmp.resource, value);
 206         }
 207 }
 208
 209 void Creature::Hurt(double amount) noexcept {
 210         stats.Damage().Add(amount);
 211         if (stats.Damage().Full()) {
 212                 Die();
 213         }
 214 }
 215
 216 void Creature::Die() noexcept {
 217         if (Dead()) return;
 218
 219         std::ostream &log = sim.Log() << name << " ";
 220         if (stats.Exhaustion().Full()) {
 221                 log << "died of exhaustion";
 222         } else if (stats.Breath().Full()) {
 223                 log << "suffocated";
 224         } else if (stats.Thirst().Full()) {
 225                 log << "died of thirst";
 226         } else if (stats.Hunger().Full()) {
 227                 log << "starved to death";
 228         } else {
 229                 log << "succumed to wounds";
 230         }
 231         log << " at an age of " << ui::TimeString(Age())
 232                 << " (" << ui::PercentageString(Age() / properties.Lifetime())
 233                 << " of life expectancy of " << ui::TimeString(properties.Lifetime())
 234                 << ")" << std::endl;
 235
 236         sim.SetDead(this);
 237         death = sim.Time();
 238         steering.Off();
 239         if (on_death) {
 240                 on_death(*this);
 241         }
 242         Remove();
 243 }
 244
 245 bool Creature::Dead() const noexcept {
 246         return death > birth;
 247 }
 248
 249 void Creature::Remove() noexcept {
 250         removable = true;
 251 }
 252
 253 void Creature::Removed() noexcept {
 254         bg_task.reset();
 255         goals.clear();
 256         memory.Erase();
 257         KillVAO();
 258 }
 259
 260 void Creature::AddParent(Creature &p) {
 261         parents.push_back(&p);
 262 }
 263
 264 double Creature::Age() const noexcept {
 265         return sim.Time() - birth;
 266 }
 267
 268 double Creature::AgeFactor(double peak) const noexcept {
 269         // shifted inverse hermite, y = 1 - (3t² - 2t³) with t = normalized age - peak
 270         // goes negative below -0.5 and starts to rise again above 1.0
 271         double t = glm::clamp((Age() / properties.Lifetime()) - peak, -0.5, 1.0);
 272         // guarantee at least 1%
 273         return std::max(0.01, 1.0 - (3.0 * t * t) + (2.0 * t * t * t));
 274 }
 275
 276 double Creature::EnergyEfficiency() const noexcept {
 277         return 0.25 * AgeFactor(0.05);
 278 }
 279
 280 double Creature::ExhaustionFactor() const noexcept {
 281         return 1.0 - (glm::smoothstep(0.5, 1.0, stats.Exhaustion().value) * 0.5);
 282 }
 283
 284 double Creature::FatigueFactor() const noexcept {
 285         return 1.0 - (glm::smoothstep(0.5, 1.0, stats.Fatigue().value) * 0.5);
 286 }
 287
 288 double Creature::Strength() const noexcept {
 289         // TODO: replace all age factors with actual growth and decay
 290         return properties.Strength() * ExhaustionFactor() * AgeFactor(0.25);
 291 }
 292
 293 double Creature::Stamina() const noexcept {
 294         return properties.Stamina() * ExhaustionFactor() * AgeFactor(0.25);
 295 }
 296
 297 double Creature::Dexerty() const noexcept {
 298         return properties.Dexerty() * ExhaustionFactor() * AgeFactor(0.25);
 299 }
 300
 301 double Creature::Intelligence() const noexcept {
 302         return properties.Intelligence() * FatigueFactor() * AgeFactor(0.25);
 303 }
 304
 305 double Creature::Lifetime() const noexcept {
 306         return properties.Lifetime();
 307 }
 308
 309 double Creature::Fertility() const noexcept {
 310         return properties.Fertility() * AgeFactor(0.25);
 311 }
 312
 313 double Creature::Mutability() const noexcept {
 314         return properties.Mutability();
 315 }
 316
 317 double Creature::Adaptability() const noexcept {
 318         return properties.Adaptability();
 319 }
 320
 321 double Creature::OffspringMass() const noexcept {
 322         return properties.OffspringMass();
 323 }
 324
 325 double Creature::PerceptionRange() const noexcept {
 326         return 3.0 * (Dexerty() / (Dexerty() + 1)) + Size();
 327 }
 328
 329 double Creature::PerceptionOmniRange() const noexcept {
 330         return 0.5 * (Dexerty() / (Dexerty() + 1)) + Size();
 331 }
 332
 333 double Creature::PerceptionField() const noexcept {
 334         // this is the cosine of half the angle, so 1.0 is none, -1.0 is perfect
 335         return 0.8 - (Dexerty() / (Dexerty() + 1));
 336 }
 337
 338 bool Creature::PerceptionTest(const glm::dvec3 &p) const noexcept {
 339         const glm::dvec3 diff(p - situation.Position());
 340         double omni_range = PerceptionOmniRange();
 341         if (length2(diff) < omni_range * omni_range) return true;
 342         double range = PerceptionRange();
 343         if (length2(diff) > range * range) return false;
 344         return dot(normalize(diff), situation.Heading()) > PerceptionField();
 345 }
 346
 347 double Creature::OffspringChance() const noexcept {
 348         return AgeFactor(0.25) * properties.Fertility() * (1.0 / 3600.0);
 349 }
 350
 351 double Creature::MutateChance() const noexcept {
 352         return GetProperties().Mutability() * (1.0 / 3600.0);
 353 }
 354
 355 double Creature::AdaptChance() const noexcept {
 356         return GetProperties().Adaptability() * (1.0 / 120.0);
 357 }
 358
 359 void Creature::AddGoal(std::unique_ptr<Goal> &&g) {
 360         g->Enable();
 361         goals.emplace_back(std::move(g));
 362 }
 363
 364 namespace {
 365
 366 bool GoalCompare(const std::unique_ptr<Goal> &a, const std::unique_ptr<Goal> &b) {
 367         return b->Urgency() < a->Urgency();
 368 }
 369
 370 }
 371
 372 void Creature::Tick(double dt) {
 373         TickState(dt);
 374         TickStats(dt);
 375         TickBrain(dt);
 376 }
 377
 378 void Creature::TickState(double dt) {
 379         steering.MaxSpeed(Dexerty());
 380         steering.MaxForce(Strength());
 381         Situation::State state(situation.GetState());
 382         Situation::Derivative a(Step(Situation::Derivative(), 0.0));
 383         Situation::Derivative b(Step(a, dt * 0.5));
 384         Situation::Derivative c(Step(b, dt * 0.5));
 385         Situation::Derivative d(Step(c, dt));
 386         Situation::Derivative f(
 387                 (1.0 / 6.0) * (a.vel + 2.0 * (b.vel + c.vel) + d.vel),
 388                 (1.0 / 6.0) * (a.acc + 2.0 * (b.acc + c.acc) + d.acc)
 389         );
 390         state.pos += f.vel * dt;
 391         state.vel += f.acc * dt;
 392         situation.EnforceConstraints(state);
 393         if (length2(state.vel) > 0.000001) {
 394                 glm::dvec3 nvel(normalize(state.vel));
 395                 double ang = angle(nvel, state.dir);
 396                 double turn_rate = PI * 0.75 * dt;
 397                 if (ang < turn_rate) {
 398                         state.dir = normalize(state.vel);
 399                 } else if (std::abs(ang - PI) < 0.001) {
 400                         state.dir = rotate(state.dir, turn_rate, world::Planet::SurfaceNormal(situation.Surface()));
 401                 } else {
 402                         state.dir = rotate(state.dir, turn_rate, normalize(cross(state.dir, nvel)));
 403                 }
 404         }
 405         situation.SetState(state);
 406         // work is force times distance
 407         DoWork(length(f.acc) * Mass() * length(f.vel) * dt);
 408 }
 409
 410 Situation::Derivative Creature::Step(const Situation::Derivative &ds, double dt) const noexcept {
 411         Situation::State s = situation.GetState();
 412         s.pos += ds.vel * dt;
 413         s.vel += ds.acc * dt;
 414         glm::dvec3 force(steering.Force(s));
 415         // gravity = antinormal * mass * Gm / r²
 416         double elevation = s.pos[(situation.Surface() + 2) % 3];
 417         glm::dvec3 normal(world::Planet::SurfaceNormal(situation.Surface()));
 418         force += glm::dvec3(
 419                 -normal
 420                 * Mass() * situation.GetPlanet().GravitationalParameter()
 421                 / (elevation * elevation));
 422         // if net force is applied and in contact with surface
 423         if (!allzero(force) && std::abs(std::abs(elevation) - situation.GetPlanet().Radius()) < 0.001) {
 424                 // apply friction = -|normal force| * tangential force * coefficient
 425                 glm::dvec3 fn(normal * dot(force, normal));
 426                 glm::dvec3 ft(force - fn);
 427                 double u = 0.4;
 428                 glm::dvec3 friction(-length(fn) * ft * u);
 429                 force += friction;
 430         }
 431         return {
 432                 s.vel,
 433                 force / Mass()
 434         };
 435 }
 436
 437 void Creature::TickStats(double dt) {
 438         for (auto &s : stats.stat) {
 439                 s.Add(s.gain * dt);
 440         }
 441         // TODO: damage values depending on properties
 442         if (stats.Breath().Full()) {
 443                 constexpr double dps = 1.0 / 4.0;
 444                 Hurt(dps * dt);
 445         }
 446         if (stats.Thirst().Full()) {
 447                 constexpr double dps = 1.0 / 32.0;
 448                 Hurt(dps * dt);
 449         }
 450         if (stats.Hunger().Full()) {
 451                 constexpr double dps = 1.0 / 128.0;
 452                 Hurt(dps * dt);
 453         }
 454         if (!situation.Moving()) {
 455                 // double exhaustion recovery when standing still
 456                 stats.Exhaustion().Add(stats.Exhaustion().gain * dt);
 457         }
 458 }
 459
 460 void Creature::TickBrain(double dt) {
 461         bg_task->Tick(dt);
 462         bg_task->Action();
 463         memory.Tick(dt);
 464         // do background stuff
 465         if (goals.empty()) {
 466                 return;
 467         }
 468         for (auto &goal : goals) {
 469                 goal->Tick(dt);
 470         }
 471         // if active goal can be interrupted, check priorities
 472         if (goals.size() > 1 && goals[0]->Interruptible()) {
 473                 std::sort(goals.begin(), goals.end(), GoalCompare);
 474         }
 475         goals[0]->Action();
 476         for (auto goal = goals.begin(); goal != goals.end();) {
 477                 if ((*goal)->Complete()) {
 478                         goals.erase(goal);
 479                 } else {
 480                         ++goal;
 481                 }
 482         }
 483 }
 484
 485 math::AABB Creature::CollisionBox() const noexcept {
 486         return { glm::dvec3(size * -0.5), glm::dvec3(size * 0.5) };
 487 }
 488
 489 glm::dmat4 Creature::CollisionTransform() const noexcept {
 490         const double half_size = size * 0.5;
 491         const glm::dvec3 &pos = situation.Position();
 492         const glm::dmat3 srf(world::Planet::SurfaceOrientation(situation.Surface()));
 493         return glm::translate(glm::dvec3(pos.x, pos.y, pos.z + half_size))
 494                 * glm::rotate(glm::orientedAngle(-srf[2], situation.Heading(), srf[1]), srf[1])
 495                 * glm::dmat4(srf);
 496 }
 497
 498 glm::dmat4 Creature::LocalTransform() noexcept {
 499         const double half_size = size * 0.5;
 500         return CollisionTransform()
 501                 * glm::scale(glm::dvec3(half_size, half_size, half_size));
 502 }
 503
 504 void Creature::BuildVAO() {
 505         vao.reset(new graphics::SimpleVAO<Attributes, unsigned short>);
 506         vao->Bind();
 507         vao->BindAttributes();
 508         vao->EnableAttribute(0);
 509         vao->EnableAttribute(1);
 510         vao->EnableAttribute(2);
 511         vao->AttributePointer<glm::vec3>(0, false, offsetof(Attributes, position));
 512         vao->AttributePointer<glm::vec3>(1, false, offsetof(Attributes, normal));
 513         vao->AttributePointer<glm::vec3>(2, false, offsetof(Attributes, texture));
 514         vao->ReserveAttributes(6 * 4, GL_STATIC_DRAW);
 515         {
 516                 auto attrib = vao->MapAttributes(GL_WRITE_ONLY);
 517                 const float offset = 1.0f;
 518                 for (int surface = 0; surface < 6; ++surface) {
 519                         const float tex_u_begin = surface < 3 ? 1.0f : 0.0f;
 520                         const float tex_u_end = surface < 3 ? 0.0f : 1.0f;
 521
 522                         attrib[4 * surface + 0].position[(surface + 0) % 3] = -offset;
 523                         attrib[4 * surface + 0].position[(surface + 1) % 3] = -offset;
 524                         attrib[4 * surface + 0].position[(surface + 2) % 3] = surface < 3 ? offset : -offset;
 525                         attrib[4 * surface + 0].normal[(surface + 0) % 3] = 0.0f;
 526                         attrib[4 * surface + 0].normal[(surface + 1) % 3] = 0.0f;
 527                         attrib[4 * surface + 0].normal[(surface + 2) % 3] = surface < 3 ? 1.0f : -1.0f;
 528                         attrib[4 * surface + 0].texture.x = tex_u_begin;
 529                         attrib[4 * surface + 0].texture.y = 1.0f;
 530                         attrib[4 * surface + 0].texture.z = surface;
 531
 532                         attrib[4 * surface + 1].position[(surface + 0) % 3] = -offset;
 533                         attrib[4 * surface + 1].position[(surface + 1) % 3] =  offset;
 534                         attrib[4 * surface + 1].position[(surface + 2) % 3] = surface < 3 ? offset : -offset;
 535                         attrib[4 * surface + 1].normal[(surface + 0) % 3] = 0.0f;
 536                         attrib[4 * surface + 1].normal[(surface + 1) % 3] = 0.0f;
 537                         attrib[4 * surface + 1].normal[(surface + 2) % 3] = surface < 3 ? 1.0f : -1.0f;
 538                         attrib[4 * surface + 1].texture.x = tex_u_end;
 539                         attrib[4 * surface + 1].texture.y = 1.0f;
 540                         attrib[4 * surface + 1].texture.z = surface;
 541
 542                         attrib[4 * surface + 2].position[(surface + 0) % 3] =  offset;
 543                         attrib[4 * surface + 2].position[(surface + 1) % 3] = -offset;
 544                         attrib[4 * surface + 2].position[(surface + 2) % 3] = surface < 3 ? offset : -offset;
 545                         attrib[4 * surface + 2].normal[(surface + 0) % 3] = 0.0f;
 546                         attrib[4 * surface + 2].normal[(surface + 1) % 3] = 0.0f;
 547                         attrib[4 * surface + 2].normal[(surface + 2) % 3] = surface < 3 ? 1.0f : -1.0f;
 548                         attrib[4 * surface + 2].texture.x = tex_u_begin;
 549                         attrib[4 * surface + 2].texture.y = 0.0f;
 550                         attrib[4 * surface + 2].texture.z = surface;
 551
 552                         attrib[4 * surface + 3].position[(surface + 0) % 3] = offset;
 553                         attrib[4 * surface + 3].position[(surface + 1) % 3] = offset;
 554                         attrib[4 * surface + 3].position[(surface + 2) % 3] = surface < 3 ? offset : -offset;
 555                         attrib[4 * surface + 3].normal[(surface + 0) % 3] = 0.0f;
 556                         attrib[4 * surface + 3].normal[(surface + 1) % 3] = 0.0f;
 557                         attrib[4 * surface + 3].normal[(surface + 2) % 3] = surface < 3 ? 1.0f : -1.0f;
 558                         attrib[4 * surface + 3].texture.x = tex_u_end;
 559                         attrib[4 * surface + 3].texture.y = 0.0f;
 560                         attrib[4 * surface + 3].texture.z = surface;
 561                 }
 562         }
 563         vao->BindElements();
 564         vao->ReserveElements(6 * 6, GL_STATIC_DRAW);
 565         {
 566                 auto element = vao->MapElements(GL_WRITE_ONLY);
 567                 for (int surface = 0; surface < 3; ++surface) {
 568                         element[6 * surface + 0] = 4 * surface + 0;
 569                         element[6 * surface + 1] = 4 * surface + 2;
 570                         element[6 * surface + 2] = 4 * surface + 1;
 571                         element[6 * surface + 3] = 4 * surface + 1;
 572                         element[6 * surface + 4] = 4 * surface + 2;
 573                         element[6 * surface + 5] = 4 * surface + 3;
 574                 }
 575                 for (int surface = 3; surface < 6; ++surface) {
 576                         element[6 * surface + 0] = 4 * surface + 0;
 577                         element[6 * surface + 1] = 4 * surface + 1;
 578                         element[6 * surface + 2] = 4 * surface + 2;
 579                         element[6 * surface + 3] = 4 * surface + 2;
 580                         element[6 * surface + 4] = 4 * surface + 1;
 581                         element[6 * surface + 5] = 4 * surface + 3;
 582                 }
 583         }
 584         vao->Unbind();
 585 }
 586
 587 void Creature::KillVAO() {
 588         vao.reset();
 589 }
 590
 591 void Creature::Draw(graphics::Viewport &viewport) {
 592         if (!vao) return;
 593         vao->Bind();
 594         vao->DrawTriangles(6 * 6);
 595 }
 596
 597
 598 void Spawn(Creature &c, world::Planet &p) {
 599         p.AddCreature(&c);
 600         c.GetSituation().SetPlanetSurface(p, 0, p.TileCenter(0, p.SideLength() / 2, p.SideLength() / 2));
 601         c.GetSituation().Heading(-world::Planet::SurfaceOrientation(0)[2]);
 602
 603         // probe surrounding area for common resources
 604         int start = p.SideLength() / 2 - 2;
 605         int end = start + 5;
 606         std::map<int, double> yields;
 607         for (int y = start; y < end; ++y) {
 608                 for (int x = start; x < end; ++x) {
 609                         const world::TileType &t = p.TypeAt(0, x, y);
 610                         for (auto yield : t.resources) {
 611                                 yields[yield.resource] += yield.ubiquity;
 612                         }
 613                 }
 614         }
 615         int liquid = -1;
 616         int solid = -1;
 617         for (auto e : yields) {
 618                 if (c.GetSimulation().Resources()[e.first].state == world::Resource::LIQUID) {
 619                         if (liquid < 0 || e.second > yields[liquid]) {
 620                                 liquid = e.first;
 621                         }
 622                 } else if (c.GetSimulation().Resources()[e.first].state == world::Resource::SOLID) {
 623                         if (solid < 0 || e.second > yields[solid]) {
 624                                 solid = e.first;
 625                         }
 626                 }
 627         }
 628
 629         Genome genome;
 630         genome.properties.Strength() = { 2.0, 0.1 };
 631         genome.properties.Stamina() = { 2.0, 0.1 };
 632         genome.properties.Dexerty() = { 2.0, 0.1 };
 633         genome.properties.Intelligence() = { 1.0, 0.1 };
 634         genome.properties.Lifetime() = { 480.0, 60.0 };
 635         genome.properties.Fertility() = { 0.5, 0.03 };
 636         genome.properties.Mutability() = { 0.9, 0.1 };
 637         genome.properties.Adaptability() = { 0.9, 0.1 };
 638         genome.properties.OffspringMass() = { 0.3, 0.02 };
 639
 640         glm::dvec3 color_avg(0.0);
 641         double color_divisor = 0.0;
 642
 643         if (p.HasAtmosphere()) {
 644                 c.AddMass(p.Atmosphere(), 0.01);
 645                 color_avg += c.GetSimulation().Resources()[p.Atmosphere()].base_color * 0.1;
 646                 color_divisor += 0.1;
 647         }
 648         if (liquid > -1) {
 649                 c.AddMass(liquid, 0.3);
 650                 color_avg += c.GetSimulation().Resources()[liquid].base_color * 0.5;
 651                 color_divisor += 0.5;
 652         }
 653         if (solid > -1) {
 654                 c.AddMass(solid, 0.1);
 655                 color_avg += c.GetSimulation().Resources()[solid].base_color;
 656                 color_divisor += 1.0;
 657         }
 658
 659         if (color_divisor > 0.001) {
 660                 color_avg /= color_divisor;
 661         }
 662         glm::dvec3 hsl = rgb2hsl(color_avg);
 663         genome.base_hue = { hsl.x, 0.01 };
 664         genome.base_saturation = { hsl.y, 0.01 };
 665         genome.base_lightness = { hsl.z, 0.01 };
 666         // use opposite color as start highlight
 667         genome.highlight_hue = { std::fmod(hsl.x + 0.5, 1.0), 0.01 };
 668         genome.highlight_saturation = { 1.0 - hsl.y, 0.01 };
 669         genome.highlight_lightness = { 1.0 - hsl.z, 0.01 };
 670
 671         genome.Configure(c);
 672 }
 673
 674 void Genome::Configure(Creature &c) const {
 675         c.GetGenome() = *this;
 676
 677         math::GaloisLFSR &random = c.GetSimulation().Assets().random;
 678
 679         c.GetProperties() = Instantiate(properties, random);
 680
 681         // TODO: derive stats from properties
 682         c.GetStats().Damage().gain = (-1.0 / 100.0);
 683         c.GetStats().Breath().gain = (1.0 / 5.0);
 684         c.GetStats().Thirst().gain = (1.0 / 60.0);
 685         c.GetStats().Hunger().gain = (1.0 / 200.0);
 686         c.GetStats().Exhaustion().gain = (-1.0 / 100.0);
 687         c.GetStats().Fatigue().gain = (-1.0 / 100.0);
 688         c.GetStats().Boredom().gain = (1.0 / 300.0);
 689
 690         glm::dvec3 base_color(
 691                 std::fmod(base_hue.FakeNormal(random.SNorm()) + 1.0, 1.0),
 692                 glm::clamp(base_saturation.FakeNormal(random.SNorm()), 0.0, 1.0),
 693                 glm::clamp(base_lightness.FakeNormal(random.SNorm()), 0.0, 1.0)
 694         );
 695         glm::dvec3 highlight_color(
 696                 std::fmod(highlight_hue.FakeNormal(random.SNorm()) + 1.0, 1.0),
 697                 glm::clamp(highlight_saturation.FakeNormal(random.SNorm()), 0.0, 1.0),
 698                 glm::clamp(highlight_lightness.FakeNormal(random.SNorm()), 0.0, 1.0)
 699         );
 700         c.BaseColor(hsl2rgb(base_color));
 701         c.HighlightColor(hsl2rgb(highlight_color));
 702         c.SetBackgroundTask(std::unique_ptr<Goal>(new BlobBackgroundTask(c)));
 703         c.AddGoal(std::unique_ptr<Goal>(new IdleGoal(c)));
 704 }
 705
 706
 707 void Split(Creature &c) {
 708         Creature *a = new Creature(c.GetSimulation());
 709         const Situation &s = c.GetSituation();
 710         a->AddParent(c);
 711         a->Name(c.GetSimulation().Assets().name.Sequential());
 712         c.GetGenome().Configure(*a);
 713         for (const auto &cmp : c.GetComposition()) {
 714                 a->AddMass(cmp.resource, cmp.value * 0.5);
 715         }
 716         s.GetPlanet().AddCreature(a);
 717         // TODO: duplicate situation somehow
 718         a->GetSituation().SetPlanetSurface(
 719                 s.GetPlanet(), s.Surface(),
 720                 s.Position() + glm::dvec3(0.0, 0.55 * a->Size(), 0.0));
 721         a->BuildVAO();
 722         c.GetSimulation().Log() << a->Name() << " was born" << std::endl;
 723
 724         Creature *b = new Creature(c.GetSimulation());
 725         b->AddParent(c);
 726         b->Name(c.GetSimulation().Assets().name.Sequential());
 727         c.GetGenome().Configure(*b);
 728         for (const auto &cmp : c.GetComposition()) {
 729                 b->AddMass(cmp.resource, cmp.value * 0.5);
 730         }
 731         s.GetPlanet().AddCreature(b);
 732         b->GetSituation().SetPlanetSurface(
 733                 s.GetPlanet(), s.Surface(),
 734                 s.Position() - glm::dvec3(0.0, 0.55 * b->Size(), 0.0));
 735         b->BuildVAO();
 736         c.GetSimulation().Log() << b->Name() << " was born" << std::endl;
 737
 738         c.Die();
 739 }
 740
 741
 742 Memory::Memory(Creature &c)
 743 : c(c) {
 744 }
 745
 746 Memory::~Memory() {
 747 }
 748
 749 void Memory::Erase() {
 750         known_types.clear();
 751 }
 752
 753 void Memory::Tick(double dt) {
 754         Situation &s = c.GetSituation();
 755         if (s.OnTile()) {
 756                 TrackStay({ &s.GetPlanet(), s.Surface(), s.SurfacePosition() }, dt);
 757         }
 758 }
 759
 760 void Memory::TrackStay(const Location &l, double t) {
 761         const world::TileType &type = l.planet->TypeAt(l.surface, l.coords.x, l.coords.y);
 762         auto entry = known_types.find(type.id);
 763         if (entry != known_types.end()) {
 764                 if (c.GetSimulation().Time() - entry->second.last_been > c.GetProperties().Lifetime() * 0.1) {
 765                         // "it's been ages"
 766                         if (entry->second.time_spent > c.Age() * 0.25) {
 767                                 // the place is very familiar
 768                                 c.GetStats().Boredom().Add(-0.2);
 769                         } else {
 770                                 // infrequent stays
 771                                 c.GetStats().Boredom().Add(-0.1);
 772                         }
 773                 }
 774                 entry->second.last_been = c.GetSimulation().Time();
 775                 entry->second.last_loc = l;
 776                 entry->second.time_spent += t;
 777         } else {
 778                 known_types.emplace(type.id, Stay{
 779                         c.GetSimulation().Time(),
 780                         l,
 781                         c.GetSimulation().Time(),
 782                         l,
 783                         t
 784                 });
 785                 // completely new place, interesting
 786                 // TODO: scale by personality trait
 787                 c.GetStats().Boredom().Add(-0.25);
 788         }
 789 }
 790
 791
 792 NameGenerator::NameGenerator()
 793 : counter(0) {
 794 }
 795
 796 NameGenerator::~NameGenerator() {
 797 }
 798
 799 std::string NameGenerator::Sequential() {
 800         std::stringstream ss;
 801         ss << "Blob " << ++counter;
 802         return ss.str();
 803 }
 804
 805
 806 Situation::Situation()
 807 : planet(nullptr)
 808 , state(glm::dvec3(0.0), glm::dvec3(0.0))
 809 , surface(0)
 810 , type(LOST) {
 811 }
 812
 813 Situation::~Situation() {
 814 }
 815
 816 bool Situation::OnPlanet() const noexcept {
 817         return type == PLANET_SURFACE;
 818 }
 819
 820 bool Situation::OnSurface() const noexcept {
 821         return type == PLANET_SURFACE;
 822 }
 823
 824 bool Situation::OnTile() const noexcept {
 825         if (type != PLANET_SURFACE) return false;
 826         glm::ivec2 t(planet->SurfacePosition(surface, state.pos));
 827         return t.x >= 0 && t.x < planet->SideLength()
 828                 && t.y >= 0 && t.y < planet->SideLength();
 829 }
 830
 831 glm::ivec2 Situation::SurfacePosition() const noexcept {
 832         return planet->SurfacePosition(surface, state.pos);
 833 }
 834
 835 world::Tile &Situation::GetTile() const noexcept {
 836         glm::ivec2 t(planet->SurfacePosition(surface, state.pos));
 837         return planet->TileAt(surface, t.x, t.y);
 838 }
 839
 840 const world::TileType &Situation::GetTileType() const noexcept {
 841         glm::ivec2 t(planet->SurfacePosition(surface, state.pos));
 842         return planet->TypeAt(surface, t.x, t.y);
 843 }
 844
 845 void Situation::Move(const glm::dvec3 &dp) noexcept {
 846         state.pos += dp;
 847         EnforceConstraints(state);
 848 }
 849
 850 void Situation::Accelerate(const glm::dvec3 &dv) noexcept {
 851         state.vel += dv;
 852         EnforceConstraints(state);
 853 }
 854
 855 void Situation::EnforceConstraints(State &s) noexcept {
 856         if (OnSurface()) {
 857                 if (Surface() < 3) {
 858                         if (s.pos[(Surface() + 2) % 3] < GetPlanet().Radius()) {
 859                                 s.pos[(Surface() + 2) % 3] = GetPlanet().Radius();
 860                                 s.vel[(Surface() + 2) % 3] = std::max(0.0, s.vel[(Surface() + 2) % 3]);
 861                         }
 862                 } else {
 863                         if (s.pos[(Surface() + 2) % 3] > -GetPlanet().Radius()) {
 864                                 s.pos[(Surface() + 2) % 3] = -GetPlanet().Radius();
 865                                 s.vel[(Surface() + 2) % 3] = std::min(0.0, s.vel[(Surface() + 2) % 3]);
 866                         }
 867                 }
 868         }
 869 }
 870
 871 void Situation::SetPlanetSurface(world::Planet &p, int srf, const glm::dvec3 &pos) noexcept {
 872         type = PLANET_SURFACE;
 873         planet = &p;
 874         surface = srf;
 875         state.pos = pos;
 876         EnforceConstraints(state);
 877 }
 878
 879
 880 Steering::Steering(const Creature &c)
 881 : c(c)
 882 , target(0.0)
 883 , haste(0.0)
 884 , max_force(1.0)
 885 , max_speed(1.0)
 886 , min_dist(0.0)
 887 , max_look(0.0)
 888 , separating(false)
 889 , halting(true)
 890 , seeking(false)
 891 , arriving(false) {
 892 }
 893
 894 Steering::~Steering() {
 895 }
 896
 897 void Steering::Off() noexcept {
 898         separating = false;
 899         halting = false;
 900         seeking = false;
 901         arriving = false;
 902 }
 903
 904 void Steering::Separate(double min_distance, double max_lookaround) noexcept {
 905         separating = true;
 906         min_dist = min_distance;
 907         max_look = max_lookaround;
 908 }
 909
 910 void Steering::DontSeparate() noexcept {
 911         separating = false;
 912 }
 913
 914 void Steering::ResumeSeparate() noexcept {
 915         separating = true;
 916 }
 917
 918 void Steering::Halt() noexcept {
 919         halting = true;
 920         seeking = false;
 921         arriving = false;
 922 }
 923
 924 void Steering::Pass(const glm::dvec3 &t) noexcept {
 925         target = t;
 926         halting = false;
 927         seeking = true;
 928         arriving = false;
 929 }
 930
 931 void Steering::GoTo(const glm::dvec3 &t) noexcept {
 932         target = t;
 933         halting = false;
 934         seeking = false;
 935         arriving = true;
 936 }
 937
 938 glm::dvec3 Steering::Force(const Situation::State &s) const noexcept {
 939         double speed = max_speed * glm::clamp(max_speed * haste * haste, 0.25, 1.0);
 940         double force = max_speed * glm::clamp(max_force * haste * haste, 0.5, 1.0);
 941         glm::dvec3 result(0.0);
 942         if (separating) {
 943                 // TODO: off surface situation
 944                 glm::dvec3 repulse(0.0);
 945                 const Situation &s = c.GetSituation();
 946                 for (auto &other : s.GetPlanet().Creatures()) {
 947                         if (&*other == &c) continue;
 948                         glm::dvec3 diff = s.Position() - other->GetSituation().Position();
 949                         if (length2(diff) > max_look * max_look) continue;
 950                         if (!c.PerceptionTest(other->GetSituation().Position())) continue;
 951                         double sep = length(diff) - other->Size() * 0.707 - c.Size() * 0.707;
 952                         if (sep < min_dist) {
 953                                 repulse += normalize(diff) * (1.0 - sep / min_dist);
 954                         }
 955                 }
 956                 result += repulse;
 957         }
 958         if (halting) {
 959                 // break twice as hard
 960                 result += -2.0 * s.vel * force;
 961         }
 962         if (seeking) {
 963                 glm::dvec3 diff = target - s.pos;
 964                 if (!allzero(diff)) {
 965                         result += TargetVelocity(s, (normalize(diff) * speed), force);
 966                 }
 967         }
 968         if (arriving) {
 969                 glm::dvec3 diff = target - s.pos;
 970                 double dist = length(diff);
 971                 if (!allzero(diff) && dist > std::numeric_limits<double>::epsilon()) {
 972                         result += TargetVelocity(s, diff * std::min(dist * force, speed) / dist, force);
 973                 }
 974         }
 975         if (length2(result) > max_force * max_force) {
 976                 result = normalize(result) * max_force;
 977         }
 978         return result;
 979 }
 980
 981 glm::dvec3 Steering::TargetVelocity(const Situation::State &s, const glm::dvec3 &vel, double acc) const noexcept {
 982         return (vel - s.vel) * acc;
 983 }
 984
 985 }
 986 }