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Attention | Topic was automatically imported from the old Question2Answer platform. |
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Asked By | Daniel Grondin |
Hi everyone! I’m learning to use Godot with the brand new GDNative (C++17) API and I hit a wall. Been hitting hit for like 4 hours…
I’m following the FPS Tutorial from here but converting GDScript code to C++, which looks mostly the same. But, when I move in any direction, it goes in a weird, unexpected direction. In a hope to know if it’s my code or the engine that’s bugged, I copied the code from the tutorial and replaced my class with it, and it works as expected… Why? What am I doing wrong?
I uploaded the whole project to my Dropbox, with compiled binaries for Windows 64-bit (~2mb) if it is needed.
C++ functions that process movement :
void Player::process_input()
{
auto xform = _cam->get_global_transform();
_dir = {};
auto input_vector = Vector2();
if (Input::is_action_pressed("move_forward"))
input_vector.y += 1;
if (Input::is_action_pressed("move_back"))
input_vector.y -= 1;
if (Input::is_action_pressed("move_left"))
input_vector.x -= 1;
if (Input::is_action_pressed("move_right"))
input_vector.x += 1;
input_vector.normalize();
_dir += -xform.basis.z.normalized() * input_vector.y;
_dir += xform.basis.x.normalized() * input_vector.x;
if (Input::is_action_just_pressed("ui_cancel"))
Input::set_mouse_mode(Input::get_mouse_mode() == Input::MOUSE_MODE_VISIBLE
? Input::MOUSE_MODE_CAPTURED
: Input::MOUSE_MODE_VISIBLE);
}
void Player::process_movement(double delta)
{
_dir.y = 0;
_dir.normalize();
_vel.y += delta * GRAVITY;
auto hvel = _vel;
hvel.y = 0;
auto target = _dir;
target *= MAX_SPEED;
real_t accel = 0;
if (_dir.dot(hvel) > 0)
accel = ACCEL;
else
accel = DEACCEL;
hvel = hvel.linear_interpolate(target, accel * (real_t) delta);
_vel.x = hvel.x;
_vel.z = hvel.z;
_vel = owner->move_and_slide(_vel, Vector3(0, 1, 0), 0.05, 4, deg2rad(MAX_SLOPE_ANGLE));
}
The same functions in GDScript :
func process_input(delta):
# ----------------------------------
# Walking
dir = Vector3()
var cam_xform = camera.get_global_transform()
var input_movement_vector = Vector2()
if Input.is_action_pressed("move_forward"):
input_movement_vector.y += 1
if Input.is_action_pressed("move_back"):
input_movement_vector.y -= 1
if Input.is_action_pressed("move_left"):
input_movement_vector.x -= 1
if Input.is_action_pressed("move_right"):
input_movement_vector.x += 1
input_movement_vector = input_movement_vector.normalized()
dir += -cam_xform.basis.z.normalized() * input_movement_vector.y
dir += cam_xform.basis.x.normalized() * input_movement_vector.x
# ----------------------------------
# ----------------------------------
# Capturing/Freeing the cursor
if Input.is_action_just_pressed("ui_cancel"):
if Input.get_mouse_mode() == Input.MOUSE_MODE_VISIBLE:
Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)
else:
Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
# ----------------------------------
func process_movement(delta):
dir.y = 0
dir = dir.normalized()
vel.y += delta * GRAVITY
var hvel = vel
hvel.y = 0
var target = dir
target *= MAX_SPEED
var accel
if dir.dot(hvel) > 0:
accel = ACCEL
else:
accel = DEACCEL
hvel = hvel.linear_interpolate(target, accel*delta)
vel.x = hvel.x
vel.z = hvel.z
vel = move_and_slide(vel, Vector3(0, 1, 0), 0.05, 4, deg2rad(MAX_SLOPE_ANGLE))