harfang3d/harfang/engine/fps_controller.cpp
2021-10-13 14:40:31 +02:00

41 lines
1.2 KiB
C++

// HARFANG(R) Copyright (C) 2021 Emmanuel Julien, NWNC HARFANG. Released under GPL/LGPL/Commercial Licence, see licence.txt for details.
#include "foundation/math.h"
#include "foundation/matrix3.h"
#include "foundation/time.h"
#include "foundation/vector3.h"
#include "platform/input_system.h"
namespace hg {
void FpsController(bool key_up, bool key_down, bool key_left, bool key_right, bool btn, float dx, float dy, Vec3 &pos, Vec3 &rot, float speed, time_ns dt_t) {
const auto world = RotationMat3(rot.x, rot.y, rot.z);
const auto right = GetX(world), front = GetZ(world);
Vec3 dt{};
if (key_up)
dt += front;
else if (key_down)
dt -= front;
if (key_left)
dt -= right;
else if (key_right)
dt += right;
pos += dt * speed * time_to_sec_f(dt_t);
if (btn) {
rot += {-dy * 0.005f, dx * 0.005f, 0.f};
rot.x = Wrap(rot.x, -Pi, Pi);
}
}
void FpsController(const Keyboard &keyboard, const Mouse &mouse, Vec3 &pos, Vec3 &rot, float speed, time_ns dt_t) {
FpsController(keyboard.Down(K_Up) || keyboard.Down(K_W), keyboard.Down(K_Down) || keyboard.Down(K_S), keyboard.Down(K_Left) || keyboard.Down(K_A),
keyboard.Down(K_Right) || keyboard.Down(K_D), mouse.Down(0), float(mouse.DtX()), float(mouse.DtY()), pos, rot, speed, dt_t);
}
} // namespace hg