some code reorganization

[blank.git] / src / app / controller.cpp

diff --git a/src/app/controller.cpp b/src/app/controller.cpp
new file mode 100644 (file)
index 0000000..9cf2d6c
--- /dev/null
+++ b/src/app/controller.cpp
@@ -0,0 +1,100 @@
+#include "FPSController.hpp"
+#include "RandomWalk.hpp"
+
+#include <glm/gtx/euler_angles.hpp>
+#include <glm/gtx/rotate_vector.hpp>
+
+
+namespace blank {
+
+FPSController::FPSController(Entity &entity) noexcept
+: entity(entity)
+, pitch(0)
+, yaw(0) {
+
+}
+
+
+void FPSController::Pitch(float p) noexcept {
+       pitch = p;
+       if (pitch > PI / 2) {
+               pitch = PI / 2;
+       } else if (pitch < -PI / 2) {
+               pitch = -PI / 2;
+       }
+}
+
+void FPSController::RotatePitch(float delta) noexcept {
+       Pitch(pitch + delta);
+}
+
+void FPSController::Yaw(float y) noexcept {
+       yaw = y;
+       if (yaw > PI) {
+               yaw -= PI * 2;
+       } else if (yaw < -PI) {
+               yaw += PI * 2;
+       }
+}
+
+void FPSController::RotateYaw(float delta) noexcept {
+       Yaw(yaw + delta);
+}
+
+
+void FPSController::Update(int dt) noexcept {
+       entity.Rotation(glm::eulerAngleYX(yaw, pitch));
+       entity.Velocity(glm::rotateY(velocity, yaw));
+}
+
+
+RandomWalk::RandomWalk(Entity &e) noexcept
+: entity(e)
+, time_left(0) {
+
+}
+
+
+void RandomWalk::Update(int dt) noexcept {
+       time_left -= dt;
+       if (time_left > 0) return;
+       time_left += 2500 + (rand() % 5000);
+
+       constexpr float move_vel = 0.0005f;
+
+       glm::vec3 new_vel = entity.Velocity();
+
+       switch (rand() % 9) {
+               case 0:
+                       new_vel.x = -move_vel;
+                       break;
+               case 1:
+                       new_vel.x = 0.0f;
+                       break;
+               case 2:
+                       new_vel.x = move_vel;
+                       break;
+               case 3:
+                       new_vel.y = -move_vel;
+                       break;
+               case 4:
+                       new_vel.y = 0.0f;
+                       break;
+               case 5:
+                       new_vel.y = move_vel;
+                       break;
+               case 6:
+                       new_vel.z = -move_vel;
+                       break;
+               case 7:
+                       new_vel.z = 0.0f;
+                       break;
+               case 8:
+                       new_vel.z = move_vel;
+                       break;
+       }
+
+       entity.Velocity(new_vel);
+}
+
+}