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(0.0)
  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                 std::cout << "[" << ui::TimeString(sim.Time()) << "] " << name << " ";
 213                 if (stats.Exhaustion().Full()) {
 214                         std::cout << "died of exhaustion";
 215                 } else if (stats.Breath().Full()) {
 216                         std::cout << "suffocated";
 217                 } else if (stats.Thirst().Full()) {
 218                         std::cout << "died of thirst";
 219                 } else if (stats.Hunger().Full()) {
 220                         std::cout << "starved to death";
 221                 } else {
 222                         std::cout << "succumed to wounds";
 223                 }
 224                 std::cout << " at an age of " << ui::TimeString(Age())
 225                         << " (" << ui::PercentageString(Age() / properties.Lifetime())
 226                         << "% of life expectancy of " << ui::TimeString(properties.Lifetime())
 227                         << ")" << std::endl;
 228                 Die();
 229         }
 230 }
 231
 232 void Creature::Die() noexcept {
 233         sim.SetDead(this);
 234         death = sim.Time();
 235         steering.Halt();
 236         if (on_death) {
 237                 on_death(*this);
 238         }
 239         Remove();
 240 }
 241
 242 void Creature::Remove() noexcept {
 243         removable = true;
 244 }
 245
 246 void Creature::Removed() noexcept {
 247         bg_task.reset();
 248         goals.clear();
 249         memory.Erase();
 250         KillVAO();
 251 }
 252
 253 void Creature::AddParent(Creature &p) {
 254         parents.push_back(&p);
 255 }
 256
 257 double Creature::Age() const noexcept {
 258         return sim.Time() - birth;
 259 }
 260
 261 double Creature::AgeFactor(double peak) const noexcept {
 262         // shifted inverse hermite, y = 1 - (3t² - 2t³) with t = normalized age - peak
 263         // goes negative below -0.5 and starts to rise again above 1.0
 264         double t = glm::clamp((Age() / properties.Lifetime()) - peak, -0.5, 1.0);
 265         // guarantee at least 1%
 266         return std::max(0.01, 1.0 - (3.0 * t * t) + (2.0 * t * t * t));
 267 }
 268
 269 double Creature::EnergyEfficiency() const noexcept {
 270         return 0.25 * AgeFactor(0.05);
 271 }
 272
 273 double Creature::ExhaustionFactor() const noexcept {
 274         return 1.0 - (glm::smoothstep(0.5, 1.0, stats.Exhaustion().value) * 0.5);
 275 }
 276
 277 double Creature::FatigueFactor() const noexcept {
 278         return 1.0 - (glm::smoothstep(0.5, 1.0, stats.Fatigue().value) * 0.5);
 279 }
 280
 281 double Creature::Strength() const noexcept {
 282         // TODO: replace all age factors with actual growth and decay
 283         return properties.Strength() * ExhaustionFactor() * AgeFactor(0.25);
 284 }
 285
 286 double Creature::Stamina() const noexcept {
 287         return properties.Stamina() * ExhaustionFactor() * AgeFactor(0.25);
 288 }
 289
 290 double Creature::Dexerty() const noexcept {
 291         return properties.Dexerty() * ExhaustionFactor() * AgeFactor(0.25);
 292 }
 293
 294 double Creature::Intelligence() const noexcept {
 295         return properties.Intelligence() * FatigueFactor() * AgeFactor(0.25);
 296 }
 297
 298 double Creature::Lifetime() const noexcept {
 299         return properties.Lifetime();
 300 }
 301
 302 double Creature::Fertility() const noexcept {
 303         return properties.Fertility() * AgeFactor(0.25);
 304 }
 305
 306 double Creature::Mutability() const noexcept {
 307         return properties.Mutability();
 308 }
 309
 310 double Creature::Adaptability() const noexcept {
 311         return properties.Adaptability();
 312 }
 313
 314 double Creature::OffspringMass() const noexcept {
 315         return properties.OffspringMass();
 316 }
 317
 318 double Creature::OffspringChance() const noexcept {
 319         return AgeFactor(0.25) * properties.Fertility() * (1.0 / 3600.0);
 320 }
 321
 322 double Creature::MutateChance() const noexcept {
 323         return GetProperties().Mutability() * (1.0 / 3600.0);
 324 }
 325
 326 double Creature::AdaptChance() const noexcept {
 327         return GetProperties().Adaptability() * (1.0 / 120.0);
 328 }
 329
 330 void Creature::AddGoal(std::unique_ptr<Goal> &&g) {
 331         g->Enable();
 332         goals.emplace_back(std::move(g));
 333 }
 334
 335 namespace {
 336
 337 bool GoalCompare(const std::unique_ptr<Goal> &a, const std::unique_ptr<Goal> &b) {
 338         return b->Urgency() < a->Urgency();
 339 }
 340
 341 }
 342
 343 void Creature::Tick(double dt) {
 344         TickState(dt);
 345         TickStats(dt);
 346         TickBrain(dt);
 347 }
 348
 349 void Creature::TickState(double dt) {
 350         steering.MaxSpeed(Dexerty());
 351         steering.MaxForce(Strength());
 352         Situation::State state(situation.GetState());
 353         Situation::Derivative a(Step(Situation::Derivative(), 0.0));
 354         Situation::Derivative b(Step(a, dt * 0.5));
 355         Situation::Derivative c(Step(b, dt * 0.5));
 356         Situation::Derivative d(Step(c, dt));
 357         Situation::Derivative f(
 358                 (1.0 / 6.0) * (a.vel + 2.0 * (b.vel + c.vel) + d.vel),
 359                 (1.0 / 6.0) * (a.acc + 2.0 * (b.acc + c.acc) + d.acc)
 360         );
 361         state.pos += f.vel * dt;
 362         state.vel += f.acc * dt;
 363         situation.EnforceConstraints(state);
 364         if (length2(state.vel) > 0.000001) {
 365                 glm::dvec3 nvel(normalize(state.vel));
 366                 double ang = angle(nvel, state.dir);
 367                 double turn_rate = PI * 0.75 * dt;
 368                 if (ang < turn_rate) {
 369                         state.dir = normalize(state.vel);
 370                 } else if (std::abs(ang - PI) < 0.001) {
 371                         state.dir = rotate(state.dir, turn_rate, world::Planet::SurfaceNormal(situation.Surface()));
 372                 } else {
 373                         state.dir = rotate(state.dir, turn_rate, normalize(cross(state.dir, nvel)));
 374                 }
 375         }
 376         situation.SetState(state);
 377         // work is force times distance
 378         DoWork(length(f.acc) * Mass() * length(f.vel) * dt);
 379 }
 380
 381 Situation::Derivative Creature::Step(const Situation::Derivative &ds, double dt) const noexcept {
 382         Situation::State s = situation.GetState();
 383         s.pos += ds.vel * dt;
 384         s.vel += ds.acc * dt;
 385         glm::dvec3 force(steering.Force(s));
 386         // gravity = antinormal * mass * Gm / r²
 387         double elevation = s.pos[(situation.Surface() + 2) % 3];
 388         glm::dvec3 normal(world::Planet::SurfaceNormal(situation.Surface()));
 389         force += glm::dvec3(
 390                 -normal
 391                 * Mass() * situation.GetPlanet().GravitationalParameter()
 392                 / (elevation * elevation));
 393         // if net force is applied and in contact with surface
 394         if (!allzero(force) && std::abs(std::abs(elevation) - situation.GetPlanet().Radius()) < 0.001) {
 395                 // apply friction = -|normal force| * tangential force * coefficient
 396                 glm::dvec3 fn(normal * dot(force, normal));
 397                 glm::dvec3 ft(force - fn);
 398                 double u = 0.4;
 399                 glm::dvec3 friction(-length(fn) * ft * u);
 400                 force += friction;
 401         }
 402         return {
 403                 s.vel,
 404                 force / Mass()
 405         };
 406 }
 407
 408 void Creature::TickStats(double dt) {
 409         for (auto &s : stats.stat) {
 410                 s.Add(s.gain * dt);
 411         }
 412         stats.Breath().Add(stats.Breath().gain * stats.Exhaustion().value * dt);
 413         // TODO: damage values depending on properties
 414         if (stats.Breath().Full()) {
 415                 constexpr double dps = 1.0 / 4.0;
 416                 Hurt(dps * dt);
 417         }
 418         if (stats.Thirst().Full()) {
 419                 constexpr double dps = 1.0 / 32.0;
 420                 Hurt(dps * dt);
 421         }
 422         if (stats.Hunger().Full()) {
 423                 constexpr double dps = 1.0 / 128.0;
 424                 Hurt(dps * dt);
 425         }
 426         if (!situation.Moving()) {
 427                 // double exhaustion recovery when standing still
 428                 stats.Exhaustion().Add(stats.Exhaustion().gain * dt);
 429         }
 430 }
 431
 432 void Creature::TickBrain(double dt) {
 433         bg_task->Tick(dt);
 434         bg_task->Action();
 435         memory.Tick(dt);
 436         // do background stuff
 437         if (goals.empty()) {
 438                 return;
 439         }
 440         for (auto &goal : goals) {
 441                 goal->Tick(dt);
 442         }
 443         // if active goal can be interrupted, check priorities
 444         if (goals.size() > 1 && goals[0]->Interruptible()) {
 445                 std::sort(goals.begin(), goals.end(), GoalCompare);
 446         }
 447         goals[0]->Action();
 448         for (auto goal = goals.begin(); goal != goals.end();) {
 449                 if ((*goal)->Complete()) {
 450                         goals.erase(goal);
 451                 } else {
 452                         ++goal;
 453                 }
 454         }
 455 }
 456
 457 math::AABB Creature::CollisionBox() const noexcept {
 458         return { glm::dvec3(size * -0.5), glm::dvec3(size * 0.5) };
 459 }
 460
 461 glm::dmat4 Creature::CollisionTransform() const noexcept {
 462         const double half_size = size * 0.5;
 463         const glm::dvec3 &pos = situation.Position();
 464         const glm::dmat3 srf(world::Planet::SurfaceOrientation(situation.Surface()));
 465         return glm::translate(glm::dvec3(pos.x, pos.y, pos.z + half_size))
 466                 * glm::rotate(glm::orientedAngle(-srf[2], situation.Heading(), srf[1]), srf[1])
 467                 * glm::dmat4(srf);
 468 }
 469
 470 glm::dmat4 Creature::LocalTransform() noexcept {
 471         const double half_size = size * 0.5;
 472         return CollisionTransform()
 473                 * glm::scale(glm::dvec3(half_size, half_size, half_size));
 474 }
 475
 476 void Creature::BuildVAO() {
 477         vao.reset(new graphics::SimpleVAO<Attributes, unsigned short>);
 478         vao->Bind();
 479         vao->BindAttributes();
 480         vao->EnableAttribute(0);
 481         vao->EnableAttribute(1);
 482         vao->EnableAttribute(2);
 483         vao->AttributePointer<glm::vec3>(0, false, offsetof(Attributes, position));
 484         vao->AttributePointer<glm::vec3>(1, false, offsetof(Attributes, normal));
 485         vao->AttributePointer<glm::vec3>(2, false, offsetof(Attributes, texture));
 486         vao->ReserveAttributes(6 * 4, GL_STATIC_DRAW);
 487         {
 488                 auto attrib = vao->MapAttributes(GL_WRITE_ONLY);
 489                 const float offset = 1.0f;
 490                 for (int surface = 0; surface < 6; ++surface) {
 491                         const float tex_u_begin = surface < 3 ? 1.0f : 0.0f;
 492                         const float tex_u_end = surface < 3 ? 0.0f : 1.0f;
 493
 494                         attrib[4 * surface + 0].position[(surface + 0) % 3] = -offset;
 495                         attrib[4 * surface + 0].position[(surface + 1) % 3] = -offset;
 496                         attrib[4 * surface + 0].position[(surface + 2) % 3] = surface < 3 ? offset : -offset;
 497                         attrib[4 * surface + 0].normal[(surface + 0) % 3] = 0.0f;
 498                         attrib[4 * surface + 0].normal[(surface + 1) % 3] = 0.0f;
 499                         attrib[4 * surface + 0].normal[(surface + 2) % 3] = surface < 3 ? 1.0f : -1.0f;
 500                         attrib[4 * surface + 0].texture.x = tex_u_begin;
 501                         attrib[4 * surface + 0].texture.y = 1.0f;
 502                         attrib[4 * surface + 0].texture.z = surface;
 503
 504                         attrib[4 * surface + 1].position[(surface + 0) % 3] = -offset;
 505                         attrib[4 * surface + 1].position[(surface + 1) % 3] =  offset;
 506                         attrib[4 * surface + 1].position[(surface + 2) % 3] = surface < 3 ? offset : -offset;
 507                         attrib[4 * surface + 1].normal[(surface + 0) % 3] = 0.0f;
 508                         attrib[4 * surface + 1].normal[(surface + 1) % 3] = 0.0f;
 509                         attrib[4 * surface + 1].normal[(surface + 2) % 3] = surface < 3 ? 1.0f : -1.0f;
 510                         attrib[4 * surface + 1].texture.x = tex_u_end;
 511                         attrib[4 * surface + 1].texture.y = 1.0f;
 512                         attrib[4 * surface + 1].texture.z = surface;
 513
 514                         attrib[4 * surface + 2].position[(surface + 0) % 3] =  offset;
 515                         attrib[4 * surface + 2].position[(surface + 1) % 3] = -offset;
 516                         attrib[4 * surface + 2].position[(surface + 2) % 3] = surface < 3 ? offset : -offset;
 517                         attrib[4 * surface + 2].normal[(surface + 0) % 3] = 0.0f;
 518                         attrib[4 * surface + 2].normal[(surface + 1) % 3] = 0.0f;
 519                         attrib[4 * surface + 2].normal[(surface + 2) % 3] = surface < 3 ? 1.0f : -1.0f;
 520                         attrib[4 * surface + 2].texture.x = tex_u_begin;
 521                         attrib[4 * surface + 2].texture.y = 0.0f;
 522                         attrib[4 * surface + 2].texture.z = surface;
 523
 524                         attrib[4 * surface + 3].position[(surface + 0) % 3] = offset;
 525                         attrib[4 * surface + 3].position[(surface + 1) % 3] = offset;
 526                         attrib[4 * surface + 3].position[(surface + 2) % 3] = surface < 3 ? offset : -offset;
 527                         attrib[4 * surface + 3].normal[(surface + 0) % 3] = 0.0f;
 528                         attrib[4 * surface + 3].normal[(surface + 1) % 3] = 0.0f;
 529                         attrib[4 * surface + 3].normal[(surface + 2) % 3] = surface < 3 ? 1.0f : -1.0f;
 530                         attrib[4 * surface + 3].texture.x = tex_u_end;
 531                         attrib[4 * surface + 3].texture.y = 0.0f;
 532                         attrib[4 * surface + 3].texture.z = surface;
 533                 }
 534         }
 535         vao->BindElements();
 536         vao->ReserveElements(6 * 6, GL_STATIC_DRAW);
 537         {
 538                 auto element = vao->MapElements(GL_WRITE_ONLY);
 539                 for (int surface = 0; surface < 3; ++surface) {
 540                         element[6 * surface + 0] = 4 * surface + 0;
 541                         element[6 * surface + 1] = 4 * surface + 2;
 542                         element[6 * surface + 2] = 4 * surface + 1;
 543                         element[6 * surface + 3] = 4 * surface + 1;
 544                         element[6 * surface + 4] = 4 * surface + 2;
 545                         element[6 * surface + 5] = 4 * surface + 3;
 546                 }
 547                 for (int surface = 3; surface < 6; ++surface) {
 548                         element[6 * surface + 0] = 4 * surface + 0;
 549                         element[6 * surface + 1] = 4 * surface + 1;
 550                         element[6 * surface + 2] = 4 * surface + 2;
 551                         element[6 * surface + 3] = 4 * surface + 2;
 552                         element[6 * surface + 4] = 4 * surface + 1;
 553                         element[6 * surface + 5] = 4 * surface + 3;
 554                 }
 555         }
 556         vao->Unbind();
 557 }
 558
 559 void Creature::KillVAO() {
 560         vao.reset();
 561 }
 562
 563 void Creature::Draw(graphics::Viewport &viewport) {
 564         if (!vao) return;
 565         vao->Bind();
 566         vao->DrawTriangles(6 * 6);
 567 }
 568
 569
 570 void Spawn(Creature &c, world::Planet &p) {
 571         p.AddCreature(&c);
 572         c.GetSituation().SetPlanetSurface(p, 0, p.TileCenter(0, p.SideLength() / 2, p.SideLength() / 2));
 573         c.GetSituation().Heading(-world::Planet::SurfaceOrientation(0)[2]);
 574
 575         // probe surrounding area for common resources
 576         int start = p.SideLength() / 2 - 2;
 577         int end = start + 5;
 578         std::map<int, double> yields;
 579         for (int y = start; y < end; ++y) {
 580                 for (int x = start; x < end; ++x) {
 581                         const world::TileType &t = p.TypeAt(0, x, y);
 582                         for (auto yield : t.resources) {
 583                                 yields[yield.resource] += yield.ubiquity;
 584                         }
 585                 }
 586         }
 587         int liquid = -1;
 588         int solid = -1;
 589         for (auto e : yields) {
 590                 if (c.GetSimulation().Resources()[e.first].state == world::Resource::LIQUID) {
 591                         if (liquid < 0 || e.second > yields[liquid]) {
 592                                 liquid = e.first;
 593                         }
 594                 } else if (c.GetSimulation().Resources()[e.first].state == world::Resource::SOLID) {
 595                         if (solid < 0 || e.second > yields[solid]) {
 596                                 solid = e.first;
 597                         }
 598                 }
 599         }
 600
 601         Genome genome;
 602         genome.properties.Strength() = { 2.0, 0.1 };
 603         genome.properties.Stamina() = { 2.0, 0.1 };
 604         genome.properties.Dexerty() = { 2.0, 0.1 };
 605         genome.properties.Intelligence() = { 1.0, 0.1 };
 606         genome.properties.Lifetime() = { 480.0, 60.0 };
 607         genome.properties.Fertility() = { 0.5, 0.03 };
 608         genome.properties.Mutability() = { 0.9, 0.1 };
 609         genome.properties.Adaptability() = { 0.9, 0.1 };
 610         genome.properties.OffspringMass() = { 0.3, 0.02 };
 611
 612         glm::dvec3 color_avg(0.0);
 613         double color_divisor = 0.0;
 614
 615         if (p.HasAtmosphere()) {
 616                 c.AddMass(p.Atmosphere(), 0.01);
 617                 color_avg += c.GetSimulation().Resources()[p.Atmosphere()].base_color * 0.1;
 618                 color_divisor += 0.1;
 619         }
 620         if (liquid > -1) {
 621                 c.AddMass(liquid, 0.3);
 622                 color_avg += c.GetSimulation().Resources()[liquid].base_color * 0.5;
 623                 color_divisor += 0.5;
 624         }
 625         if (solid > -1) {
 626                 c.AddMass(solid, 0.1);
 627                 color_avg += c.GetSimulation().Resources()[solid].base_color;
 628                 color_divisor += 1.0;
 629         }
 630
 631         if (color_divisor > 0.001) {
 632                 color_avg /= color_divisor;
 633         }
 634         glm::dvec3 hsl = rgb2hsl(color_avg);
 635         genome.base_hue = { hsl.x, 0.01 };
 636         genome.base_saturation = { hsl.y, 0.01 };
 637         genome.base_lightness = { hsl.z, 0.01 };
 638         // use opposite color as start highlight
 639         genome.highlight_hue = { std::fmod(hsl.x + 0.5, 1.0), 0.01 };
 640         genome.highlight_saturation = { 1.0 - hsl.y, 0.01 };
 641         genome.highlight_lightness = { 1.0 - hsl.z, 0.01 };
 642
 643         genome.Configure(c);
 644 }
 645
 646 void Genome::Configure(Creature &c) const {
 647         c.GetGenome() = *this;
 648
 649         math::GaloisLFSR &random = c.GetSimulation().Assets().random;
 650
 651         c.GetProperties() = Instantiate(properties, random);
 652
 653         // TODO: derive stats from properties
 654         c.GetStats().Damage().gain = (-1.0 / 100.0);
 655         c.GetStats().Breath().gain = (1.0 / 5.0);
 656         c.GetStats().Thirst().gain = (1.0 / 60.0);
 657         c.GetStats().Hunger().gain = (1.0 / 200.0);
 658         c.GetStats().Exhaustion().gain = (-1.0 / 100.0);
 659         c.GetStats().Fatigue().gain = (-1.0 / 100.0);
 660         c.GetStats().Boredom().gain = (1.0 / 300.0);
 661
 662         glm::dvec3 base_color(
 663                 std::fmod(base_hue.FakeNormal(random.SNorm()) + 1.0, 1.0),
 664                 glm::clamp(base_saturation.FakeNormal(random.SNorm()), 0.0, 1.0),
 665                 glm::clamp(base_lightness.FakeNormal(random.SNorm()), 0.0, 1.0)
 666         );
 667         glm::dvec3 highlight_color(
 668                 std::fmod(highlight_hue.FakeNormal(random.SNorm()) + 1.0, 1.0),
 669                 glm::clamp(highlight_saturation.FakeNormal(random.SNorm()), 0.0, 1.0),
 670                 glm::clamp(highlight_lightness.FakeNormal(random.SNorm()), 0.0, 1.0)
 671         );
 672         c.BaseColor(hsl2rgb(base_color));
 673         c.HighlightColor(hsl2rgb(highlight_color));
 674         c.SetBackgroundTask(std::unique_ptr<Goal>(new BlobBackgroundTask(c)));
 675         c.AddGoal(std::unique_ptr<Goal>(new IdleGoal(c)));
 676 }
 677
 678
 679 void Split(Creature &c) {
 680         Creature *a = new Creature(c.GetSimulation());
 681         const Situation &s = c.GetSituation();
 682         a->AddParent(c);
 683         a->Name(c.GetSimulation().Assets().name.Sequential());
 684         c.GetGenome().Configure(*a);
 685         for (const auto &cmp : c.GetComposition()) {
 686                 a->AddMass(cmp.resource, cmp.value * 0.5);
 687         }
 688         s.GetPlanet().AddCreature(a);
 689         // TODO: duplicate situation somehow
 690         a->GetSituation().SetPlanetSurface(
 691                 s.GetPlanet(), s.Surface(),
 692                 s.Position() + glm::dvec3(0.0, 0.55 * a->Size(), 0.0));
 693         a->BuildVAO();
 694         std::cout << "[" << ui::TimeString(c.GetSimulation().Time()) << "] "
 695                 << a->Name() << " was born" << std::endl;
 696
 697         Creature *b = new Creature(c.GetSimulation());
 698         b->AddParent(c);
 699         b->Name(c.GetSimulation().Assets().name.Sequential());
 700         c.GetGenome().Configure(*b);
 701         for (const auto &cmp : c.GetComposition()) {
 702                 b->AddMass(cmp.resource, cmp.value * 0.5);
 703         }
 704         s.GetPlanet().AddCreature(b);
 705         b->GetSituation().SetPlanetSurface(
 706                 s.GetPlanet(), s.Surface(),
 707                 s.Position() - glm::dvec3(0.0, 0.55 * b->Size(), 0.0));
 708         b->BuildVAO();
 709         std::cout << "[" << ui::TimeString(c.GetSimulation().Time()) << "] "
 710                 << b->Name() << " was born" << std::endl;
 711
 712         c.Die();
 713 }
 714
 715
 716 Memory::Memory(Creature &c)
 717 : c(c) {
 718 }
 719
 720 Memory::~Memory() {
 721 }
 722
 723 void Memory::Erase() {
 724         known_types.clear();
 725 }
 726
 727 void Memory::Tick(double dt) {
 728         Situation &s = c.GetSituation();
 729         if (s.OnTile()) {
 730                 TrackStay({ &s.GetPlanet(), s.Surface(), s.SurfacePosition() }, dt);
 731         }
 732 }
 733
 734 void Memory::TrackStay(const Location &l, double t) {
 735         const world::TileType &type = l.planet->TypeAt(l.surface, l.coords.x, l.coords.y);
 736         auto entry = known_types.find(type.id);
 737         if (entry != known_types.end()) {
 738                 if (c.GetSimulation().Time() - entry->second.last_been > c.GetProperties().Lifetime() * 0.1) {
 739                         // "it's been ages"
 740                         if (entry->second.time_spent > c.Age() * 0.25) {
 741                                 // the place is very familiar
 742                                 c.GetStats().Boredom().Add(-0.2);
 743                         } else {
 744                                 // infrequent stays
 745                                 c.GetStats().Boredom().Add(-0.1);
 746                         }
 747                 }
 748                 entry->second.last_been = c.GetSimulation().Time();
 749                 entry->second.last_loc = l;
 750                 entry->second.time_spent += t;
 751         } else {
 752                 known_types.emplace(type.id, Stay{
 753                         c.GetSimulation().Time(),
 754                         l,
 755                         c.GetSimulation().Time(),
 756                         l,
 757                         t
 758                 });
 759                 // completely new place, interesting
 760                 // TODO: scale by personality trait
 761                 c.GetStats().Boredom().Add(-0.25);
 762         }
 763 }
 764
 765
 766 NameGenerator::NameGenerator()
 767 : counter(0) {
 768 }
 769
 770 NameGenerator::~NameGenerator() {
 771 }
 772
 773 std::string NameGenerator::Sequential() {
 774         std::stringstream ss;
 775         ss << "Blob " << ++counter;
 776         return ss.str();
 777 }
 778
 779
 780 Situation::Situation()
 781 : planet(nullptr)
 782 , state(glm::dvec3(0.0), glm::dvec3(0.0))
 783 , surface(0)
 784 , type(LOST) {
 785 }
 786
 787 Situation::~Situation() {
 788 }
 789
 790 bool Situation::OnPlanet() const noexcept {
 791         return type == PLANET_SURFACE;
 792 }
 793
 794 bool Situation::OnSurface() const noexcept {
 795         return type == PLANET_SURFACE;
 796 }
 797
 798 bool Situation::OnTile() const noexcept {
 799         if (type != PLANET_SURFACE) return false;
 800         glm::ivec2 t(planet->SurfacePosition(surface, state.pos));
 801         return t.x >= 0 && t.x < planet->SideLength()
 802                 && t.y >= 0 && t.y < planet->SideLength();
 803 }
 804
 805 glm::ivec2 Situation::SurfacePosition() const noexcept {
 806         return planet->SurfacePosition(surface, state.pos);
 807 }
 808
 809 world::Tile &Situation::GetTile() const noexcept {
 810         glm::ivec2 t(planet->SurfacePosition(surface, state.pos));
 811         return planet->TileAt(surface, t.x, t.y);
 812 }
 813
 814 const world::TileType &Situation::GetTileType() const noexcept {
 815         glm::ivec2 t(planet->SurfacePosition(surface, state.pos));
 816         return planet->TypeAt(surface, t.x, t.y);
 817 }
 818
 819 void Situation::Move(const glm::dvec3 &dp) noexcept {
 820         state.pos += dp;
 821         EnforceConstraints(state);
 822 }
 823
 824 void Situation::Accelerate(const glm::dvec3 &dv) noexcept {
 825         state.vel += dv;
 826         EnforceConstraints(state);
 827 }
 828
 829 void Situation::EnforceConstraints(State &s) noexcept {
 830         if (OnSurface()) {
 831                 if (Surface() < 3) {
 832                         if (s.pos[(Surface() + 2) % 3] < GetPlanet().Radius()) {
 833                                 s.pos[(Surface() + 2) % 3] = GetPlanet().Radius();
 834                                 s.vel[(Surface() + 2) % 3] = std::max(0.0, s.vel[(Surface() + 2) % 3]);
 835                         }
 836                 } else {
 837                         if (s.pos[(Surface() + 2) % 3] > -GetPlanet().Radius()) {
 838                                 s.pos[(Surface() + 2) % 3] = -GetPlanet().Radius();
 839                                 s.vel[(Surface() + 2) % 3] = std::min(0.0, s.vel[(Surface() + 2) % 3]);
 840                         }
 841                 }
 842         }
 843 }
 844
 845 void Situation::SetPlanetSurface(world::Planet &p, int srf, const glm::dvec3 &pos) noexcept {
 846         type = PLANET_SURFACE;
 847         planet = &p;
 848         surface = srf;
 849         state.pos = pos;
 850         EnforceConstraints(state);
 851 }
 852
 853
 854 Steering::Steering(const Creature &c)
 855 : c(c)
 856 , target(0.0)
 857 , haste(0.0)
 858 , max_force(1.0)
 859 , max_speed(1.0)
 860 , min_dist(0.0)
 861 , max_look(0.0)
 862 , separating(false)
 863 , halting(true)
 864 , seeking(false)
 865 , arriving(false) {
 866 }
 867
 868 Steering::~Steering() {
 869 }
 870
 871 void Steering::Separate(double min_distance, double max_lookaround) noexcept {
 872         separating = true;
 873         min_dist = min_distance;
 874         max_look = max_lookaround;
 875 }
 876
 877 void Steering::DontSeparate() noexcept {
 878         separating = false;
 879 }
 880
 881 void Steering::ResumeSeparate() noexcept {
 882         separating = true;
 883 }
 884
 885 void Steering::Halt() noexcept {
 886         halting = true;
 887         seeking = false;
 888         arriving = false;
 889 }
 890
 891 void Steering::Pass(const glm::dvec3 &t) noexcept {
 892         target = t;
 893         halting = false;
 894         seeking = true;
 895         arriving = false;
 896 }
 897
 898 void Steering::GoTo(const glm::dvec3 &t) noexcept {
 899         target = t;
 900         halting = false;
 901         seeking = false;
 902         arriving = true;
 903 }
 904
 905 glm::dvec3 Steering::Force(const Situation::State &s) const noexcept {
 906         double speed = max_speed * glm::clamp(max_speed * haste * haste, 0.25, 1.0);
 907         double force = max_speed * glm::clamp(max_force * haste * haste, 0.5, 1.0);
 908         glm::dvec3 result(0.0);
 909         if (separating) {
 910                 // TODO: off surface situation
 911                 glm::dvec3 repulse(0.0);
 912                 const Situation &s = c.GetSituation();
 913                 for (auto &other : s.GetPlanet().Creatures()) {
 914                         if (&*other == &c) continue;
 915                         glm::dvec3 diff = s.Position() - other->GetSituation().Position();
 916                         if (length2(diff) > max_look * max_look) continue;
 917                         double sep = length(diff) - other->Size() * 0.707 - c.Size() * 0.707;
 918                         if (sep < min_dist) {
 919                                 repulse += normalize(diff) * (1.0 - sep / min_dist);
 920                         }
 921                 }
 922                 SumForce(result, repulse, force);
 923         }
 924         if (halting) {
 925                 // break twice as hard
 926                 SumForce(result, s.vel * force * -2.0, force);
 927         }
 928         if (seeking) {
 929                 glm::dvec3 diff = target - s.pos;
 930                 if (!allzero(diff)) {
 931                         SumForce(result, TargetVelocity(s, (normalize(diff) * speed), force), force);
 932                 }
 933         }
 934         if (arriving) {
 935                 glm::dvec3 diff = target - s.pos;
 936                 double dist = length(diff);
 937                 if (!allzero(diff) && dist > std::numeric_limits<double>::epsilon()) {
 938                         SumForce(result, TargetVelocity(s, diff * std::min(dist * force, speed) / dist, force), force);
 939                 }
 940         }
 941         return result;
 942 }
 943
 944 bool Steering::SumForce(glm::dvec3 &out, const glm::dvec3 &in, double max) const noexcept {
 945         if (allzero(in) || anynan(in)) {
 946                 return false;
 947         }
 948         double cur = allzero(out) ? 0.0 : length(out);
 949         double rem = max - cur;
 950         if (rem < 0.0) {
 951                 return true;
 952         }
 953         double add = length(in);
 954         if (add > rem) {
 955                 // this method is off if in and out are in different
 956                 // directions, but gives okayish results
 957                 out += in * (1.0 / add);
 958                 return true;
 959         } else {
 960                 out += in;
 961                 return false;
 962         }
 963 }
 964
 965 glm::dvec3 Steering::TargetVelocity(const Situation::State &s, const glm::dvec3 &vel, double acc) const noexcept {
 966         return (vel - s.vel) * acc;
 967 }
 968
 969 }
 970 }