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 : resource(resource)
  32 , speed(speed)
  33 , damage(damage)
  34 , ingesting(false)
  35 , locating(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                                                 locating = false;
  57                                         }
  58                                         break;
  59                                 }
  60                         }
  61                         if (!found && !locating) {
  62                                 c.AddGoal(std::unique_ptr<Goal>(new LocateResourceGoal(resource)));
  63                                 locating = true;
  64                         }
  65                 }
  66         }
  67         if (IsCritical()) {
  68                 c.Hurt(damage * dt);
  69         }
  70 }
  71
  72
  73 InhaleNeed::InhaleNeed(int resource, double speed, double damage)
  74 : resource(resource)
  75 , speed(speed)
  76 , damage(damage)
  77 , inhaling(false) {
  78 }
  79
  80 InhaleNeed::~InhaleNeed() {
  81 }
  82
  83 void InhaleNeed::ApplyEffect(Creature &c, double dt) {
  84         if (!IsSatisfied()) {
  85                 inhaling = true;
  86         }
  87         if (inhaling) {
  88                 if (c.GetSituation().OnPlanet() && c.GetSituation().GetPlanet().Atmosphere() == resource) {
  89                         Decrease(speed * dt);
  90                         if (value == 0.0) {
  91                                 inhaling = false;
  92                         }
  93                 } else {
  94                         // TODO: panic
  95                 }
  96         }
  97         if (IsCritical()) {
  98                 c.Hurt(damage * dt);
  99         }
 100 }
 101
 102 }
 103 }