src/creature/need.cpp

   1 #include "Need.hpp"
   2 #include "InhaleNeed.hpp"
   3 #include "IngestNeed.hpp"
   4
   5 #include "Creature.hpp"
   6 #include "LocateResourceGoal.hpp"
   7 #include "../world/Planet.hpp"
   8 #include "../world/TileType.hpp"
   9
  10
  11 namespace blobs {
  12 namespace creature {
  13
  14 Need::~Need() {
  15 }
  16
  17 void Need::Tick(double dt) noexcept {
  18         Increase(gain * dt);
  19 }
  20
  21 void Need::Increase(double delta) noexcept {
  22         value = std::min(1.0, value + delta);
  23 }
  24
  25 void Need::Decrease(double delta) noexcept {
  26         value = std::max(0.0, value - delta);
  27 }
  28
  29
  30 IngestNeed::IngestNeed(int resource, double speed, double damage)
  31 : locate_goal(nullptr)
  32 , resource(resource)
  33 , speed(speed)
  34 , damage(damage)
  35 , ingesting(false) {
  36 }
  37
  38 IngestNeed::~IngestNeed() {
  39 }
  40
  41 void IngestNeed::ApplyEffect(Creature &c, double dt) {
  42         if (!IsSatisfied()) {
  43                 ingesting = true;
  44         }
  45         if (ingesting) {
  46                 if (c.GetSituation().OnSurface()) {
  47                         const world::TileType &t = c.GetSituation().GetTileType();
  48                         bool found = false;
  49                         for (auto &yield : t.resources) {
  50                                 if (yield.resource == resource) {
  51                                         found = true;
  52                                         // TODO: check if not busy with something else
  53                                         Decrease(std::min(yield.ubiquity, speed) * dt);
  54                                         if (value == 0.0) {
  55                                                 ingesting = false;
  56                                                 if (locate_goal) {
  57                                                         // abort
  58                                                         locate_goal->Complete();
  59                                                 }
  60                                         }
  61                                         break;
  62                                 }
  63                         }
  64                         if (!found && !locate_goal) {
  65                                 locate_goal = new LocateResourceGoal(c, resource);
  66                                 locate_goal->OnComplete([&](Goal &g){ OnLocateComplete(g); });
  67                                 c.AddGoal(std::unique_ptr<Goal>(locate_goal));
  68                         }
  69                 }
  70         }
  71         if (IsCritical()) {
  72                 c.Hurt(damage * dt);
  73         }
  74         if (locate_goal) {
  75                 locate_goal->Urgency(value);
  76         }
  77 }
  78
  79 void IngestNeed::OnLocateComplete(Goal &g) {
  80         if (&g == locate_goal) {
  81                 locate_goal = nullptr;
  82         }
  83 }
  84
  85
  86 InhaleNeed::InhaleNeed(int resource, double speed, double damage)
  87 : resource(resource)
  88 , speed(speed)
  89 , damage(damage)
  90 , inhaling(false) {
  91 }
  92
  93 InhaleNeed::~InhaleNeed() {
  94 }
  95
  96 void InhaleNeed::ApplyEffect(Creature &c, double dt) {
  97         if (!IsSatisfied()) {
  98                 inhaling = true;
  99         }
 100         if (inhaling) {
 101                 if (c.GetSituation().OnPlanet() && c.GetSituation().GetPlanet().Atmosphere() == resource) {
 102                         Decrease(speed * dt);
 103                         if (value == 0.0) {
 104                                 inhaling = false;
 105                         }
 106                 } else {
 107                         // TODO: panic
 108                 }
 109         }
 110         if (IsCritical()) {
 111                 c.Hurt(damage * dt);
 112         }
 113 }
 114
 115 }
 116 }