src/world/sim.cpp

   1 #include "Record.hpp"
   2 #include "Simulation.hpp"
   3
   4 #include "Body.hpp"
   5 #include "Planet.hpp"
   6 #include "Sun.hpp"
   7 #include "../creature/Creature.hpp"
   8 #include "../ui/string.hpp"
   9
  10 #include <algorithm>
  11 #include <iostream>
  12
  13
  14 namespace blobs {
  15 namespace world {
  16
  17 int Record::Update(creature::Creature &c, double value, double time) noexcept {
  18         int found = -1;
  19         for (int i = 0; i < MAX; ++i) {
  20                 if (value > rank[i].value) {
  21                         found = i;
  22                         break;
  23                 }
  24         }
  25         if (found < 0) {
  26                 return -1;
  27         }
  28         int previous = -1;
  29         for (int i = 0; i < MAX; ++i) {
  30                 if (rank[i].holder == &c) {
  31                         previous = i;
  32                         break;
  33                 }
  34         }
  35         if (previous < 0) {
  36                 // move all below down by one
  37                 std::copy_backward(rank + found, rank + MAX - 1, rank + MAX);
  38         } else if (found > previous) {
  39                 // better than last, but not an improvement
  40                 // this ensures only one slot occupied per creature
  41                 return found;
  42         } else if (found < previous) {
  43                 // move all in between down by one
  44                 std::copy_backward(rank + found, rank + previous, rank + previous + 1);
  45         }
  46         // insert new
  47         rank[found].holder = &c;
  48         rank[found].value = value;
  49         rank[found].time = time;
  50         return found;
  51 }
  52
  53 std::string Record::ValueString(int i) const {
  54         if (i < 0 || i >= MAX || !rank[i].holder) {
  55                 return "—";
  56         }
  57         switch (type) {
  58                 default:
  59                 case VALUE:
  60                         return ui::DecimalString(rank[i].value, 2);
  61                 case LENGTH:
  62                         return ui::LengthString(rank[i].value);
  63                 case MASS:
  64                         return ui::MassString(rank[i].value);
  65                 case PERCENTAGE:
  66                         return ui::PercentageString(rank[i].value);
  67                 case TIME:
  68                         return ui::TimeString(rank[i].value);
  69         }
  70 }
  71
  72 Simulation::Simulation(Body &r, app::Assets &assets)
  73 : root(r)
  74 , assets(assets)
  75 , bodies()
  76 , planets()
  77 , suns()
  78 , alive()
  79 , dead()
  80 , time(0.0)
  81 , records(7) {
  82         AddBody(r);
  83         records[0].name = "Age";
  84         records[0].type = Record::TIME;
  85         records[1].name = "Mass";
  86         records[1].type = Record::MASS;
  87         records[2].name = "Size";
  88         records[2].type = Record::LENGTH;
  89         records[3].name = "Strength";
  90         records[4].name = "Stamina";
  91         records[5].name = "Dexerty";
  92         records[6].name = "Intelligence";
  93 }
  94
  95 Simulation::~Simulation() {
  96         for (auto c : alive) {
  97                 delete c;
  98         }
  99         for (auto c : dead) {
 100                 delete c;
 101         }
 102 }
 103
 104 void Simulation::Tick(double dt) {
 105         time += dt;
 106         for (auto body : bodies) {
 107                 body->Tick(dt);
 108         }
 109         for (auto c : alive) {
 110                 CheckRecords(*c);
 111         }
 112 }
 113
 114 void Simulation::AddBody(Body &b) {
 115         b.SetSimulation(*this);
 116         bodies.insert(&b);
 117 }
 118
 119 void Simulation::AddPlanet(Planet &p) {
 120         AddBody(p);
 121         planets.insert(&p);
 122 }
 123
 124 void Simulation::AddSun(Sun &s) {
 125         AddBody(s);
 126         suns.insert(&s);
 127 }
 128
 129 void Simulation::SetAlive(creature::Creature *c) {
 130         alive.push_back(c);
 131 }
 132
 133 void Simulation::SetDead(creature::Creature *c) {
 134         auto entry = std::find(alive.begin(), alive.end(), c);
 135         if (entry != alive.end()) {
 136                 alive.erase(entry);
 137         }
 138         dead.push_back(c);
 139         CheckRecords(*c);
 140 }
 141
 142 void Simulation::CheckRecords(creature::Creature &c) noexcept {
 143         { // age
 144                 creature::Creature *prev = records[0].rank[0].holder;
 145                 int rank = records[0].Update(c, c.Age(), time);
 146                 if (rank == 0 && prev && prev != &c) {
 147                         LogRecord(records[0]);
 148                 }
 149         }
 150         { // mass
 151                 creature::Creature *prev = records[1].rank[0].holder;
 152                 int rank = records[1].Update(c, c.Mass(), time);
 153                 if (rank == 0 && prev && prev != &c) {
 154                         LogRecord(records[1]);
 155                 }
 156         }
 157         { // size
 158                 creature::Creature *prev = records[2].rank[0].holder;
 159                 int rank = records[2].Update(c, c.Size(), time);
 160                 if (rank == 0 && prev && prev != &c) {
 161                         LogRecord(records[2]);
 162                 }
 163         }
 164         { // strength
 165                 creature::Creature *prev = records[3].rank[0].holder;
 166                 int rank = records[3].Update(c, c.Strength(), time);
 167                 if (rank == 0 && prev && prev != &c) {
 168                         LogRecord(records[3]);
 169                 }
 170         }
 171         { // stamina
 172                 creature::Creature *prev = records[4].rank[0].holder;
 173                 int rank = records[4].Update(c, c.Stamina(), time);
 174                 if (rank == 0 && prev && prev != &c) {
 175                         LogRecord(records[4]);
 176                 }
 177         }
 178         { // dexerty
 179                 creature::Creature *prev = records[5].rank[0].holder;
 180                 int rank = records[5].Update(c, c.Dexerty(), time);
 181                 if (rank == 0 && prev && prev != &c) {
 182                         LogRecord(records[5]);
 183                 }
 184         }
 185         { // intelligence
 186                 creature::Creature *prev = records[6].rank[0].holder;
 187                 int rank = records[6].Update(c, c.Intelligence(), time);
 188                 if (rank == 0 && prev && prev != &c) {
 189                         LogRecord(records[6]);
 190                 }
 191         }
 192 }
 193
 194 void Simulation::LogRecord(const Record &r) {
 195         Log() << "at age " << ui::TimeString(r.rank[0].holder->Age()) << " "
 196                 << r.rank[0].holder->Name() << " broke the " << r.name << " record of "
 197                 << r.ValueString(1) << " by " << r.rank[1].holder->Name()
 198                 << " (established " << ui::TimeString(r.rank[1].time) << ")" << std::endl;
 199 }
 200
 201 std::ostream &Simulation::Log() {
 202         return std::cout << '[' << ui::TimeString(Time()) << "] ";
 203 }
 204
 205 }
 206 }