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use std::collections::HashMap;
use ecs::Sole;
use crate::vector::Vec2;
#[derive(Debug, Default, Clone, Sole)]
#[non_exhaustive]
pub struct Mouse
{
/// Change in coordinates this tick. Unit is unspecified and platforms may use
/// different units. Updated automatically by the [`windowing extension`].
///
/// [`windowing extension`]: crate::windowing
pub curr_tick_position_delta: Vec2<f64>,
/// Coordinates in pixels relative to the top-left corner of the window. May have
/// been affected by cursor acceleration
pub position: Vec2<f64>,
}
/// Mouse buttons.
#[derive(Debug, Default, Sole)]
pub struct Buttons
{
map: HashMap<Button, ButtonData>,
}
impl Buttons
{
pub fn get(&self, button: Button) -> ButtonState
{
let Some(button_data) = self.map.get(&button) else {
return ButtonState::Released;
};
button_data.current_state
}
pub fn get_previous(&self, button: Button) -> ButtonState
{
let Some(button_data) = self.map.get(&button) else {
return ButtonState::Released;
};
button_data.previous_state
}
/// Returns a iterator that yields buttons and their current states. Only buttons with
/// states is included.
pub fn all_current(&self) -> impl Iterator<Item = (Button, ButtonState)>
{
self.map
.iter()
.map(|(button, button_data)| (button.clone(), button_data.current_state))
}
pub fn set(&mut self, button: Button, button_state: ButtonState)
{
let button_data = self.map.entry(button).or_default();
button_data.current_state = button_state;
}
pub(crate) fn make_states_previous(&mut self)
{
for button_data in self.map.values_mut() {
button_data.previous_state = button_data.current_state;
}
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub enum Button
{
Left,
Right,
Middle,
Back,
Forward,
Other(u16),
}
impl From<winit::event::MouseButton> for Button
{
fn from(mouse_button: winit::event::MouseButton) -> Self
{
match mouse_button {
winit::event::MouseButton::Left => Self::Left,
winit::event::MouseButton::Right => Self::Right,
winit::event::MouseButton::Middle => Self::Middle,
winit::event::MouseButton::Back => Self::Back,
winit::event::MouseButton::Forward => Self::Forward,
winit::event::MouseButton::Other(other_mouse_button) => {
Self::Other(other_mouse_button)
}
}
}
}
/// Mouse button state.
#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub enum ButtonState
{
Pressed,
Released,
}
impl ButtonState
{
#[must_use]
#[inline]
pub fn is_pressed(&self) -> bool
{
matches!(self, Self::Pressed)
}
#[must_use]
#[inline]
pub fn is_released(&self) -> bool
{
matches!(self, Self::Released)
}
}
impl From<winit::event::ElementState> for ButtonState
{
fn from(element_state: winit::event::ElementState) -> Self
{
match element_state {
winit::event::ElementState::Pressed => Self::Pressed,
winit::event::ElementState::Released => Self::Released,
}
}
}
#[derive(Debug)]
struct ButtonData
{
current_state: ButtonState,
previous_state: ButtonState,
}
impl Default for ButtonData
{
fn default() -> Self
{
Self {
current_state: ButtonState::Released,
previous_state: ButtonState::Released,
}
}
}
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