src/ai/RandomWalk.cpp

   1 #include "RandomWalk.hpp"
   2
   3 #include "../world/Entity.hpp"
   4
   5
   6 namespace blank {
   7
   8 RandomWalk::RandomWalk(Entity &e) noexcept
   9 : entity(e)
  10 , time_left(0) {
  11
  12 }
  13
  14
  15 void RandomWalk::Update(int dt) noexcept {
  16         time_left -= dt;
  17         if (time_left > 0) return;
  18         time_left += 2500 + (rand() % 5000);
  19
  20         constexpr float move_vel = 0.0005f;
  21
  22         glm::vec3 new_vel = entity.Velocity();
  23
  24         switch (rand() % 9) {
  25                 case 0:
  26                         new_vel.x = -move_vel;
  27                         break;
  28                 case 1:
  29                         new_vel.x = 0.0f;
  30                         break;
  31                 case 2:
  32                         new_vel.x = move_vel;
  33                         break;
  34                 case 3:
  35                         new_vel.y = -move_vel;
  36                         break;
  37                 case 4:
  38                         new_vel.y = 0.0f;
  39                         break;
  40                 case 5:
  41                         new_vel.y = move_vel;
  42                         break;
  43                 case 6:
  44                         new_vel.z = -move_vel;
  45                         break;
  46                 case 7:
  47                         new_vel.z = 0.0f;
  48                         break;
  49                 case 8:
  50                         new_vel.z = move_vel;
  51                         break;
  52         }
  53
  54         entity.Velocity(new_vel);
  55 }
  56
  57 }