bevy/crates/bevy_input/src/gamepad.rs
Tristan Guichaoua 20c85b5fc3
Bevy Input Docs : the modules (#9467)
# Objective

Complete the documentation of `bevy_input` (#3492).

This PR is part of a triptych of PRs :
- https://github.com/bevyengine/bevy/pull/9468
- https://github.com/bevyengine/bevy/pull/9469

## Solution

Add documentation on modules in `bevy_input`.
2023-08-23 12:44:49 +00:00

1763 lines
61 KiB
Rust

//! The gamepad input functionality.
use crate::{Axis, ButtonState, Input};
use bevy_ecs::event::{Event, EventReader, EventWriter};
use bevy_ecs::{
change_detection::DetectChangesMut,
system::{Res, ResMut, Resource},
};
use bevy_reflect::{std_traits::ReflectDefault, Reflect};
use bevy_utils::Duration;
use bevy_utils::{tracing::info, HashMap};
use thiserror::Error;
/// Errors that occur when setting axis settings for gamepad input.
#[derive(Error, Debug, PartialEq)]
pub enum AxisSettingsError {
/// The given parameter `livezone_lowerbound` was not in range -1.0..=0.0.
#[error("invalid livezone_lowerbound {0}, expected value [-1.0..=0.0]")]
LiveZoneLowerBoundOutOfRange(f32),
/// The given parameter `deadzone_lowerbound` was not in range -1.0..=0.0.
#[error("invalid deadzone_lowerbound {0}, expected value [-1.0..=0.0]")]
DeadZoneLowerBoundOutOfRange(f32),
/// The given parameter `deadzone_lowerbound` was not in range -1.0..=0.0.
#[error("invalid deadzone_upperbound {0}, expected value [0.0..=1.0]")]
DeadZoneUpperBoundOutOfRange(f32),
/// The given parameter `deadzone_lowerbound` was not in range -1.0..=0.0.
#[error("invalid livezone_upperbound {0}, expected value [0.0..=1.0]")]
LiveZoneUpperBoundOutOfRange(f32),
/// Parameter `livezone_lowerbound` was not less than or equal to parameter `deadzone_lowerbound`.
#[error("invalid parameter values livezone_lowerbound {} deadzone_lowerbound {}, expected livezone_lowerbound <= deadzone_lowerbound", .livezone_lowerbound, .deadzone_lowerbound)]
LiveZoneLowerBoundGreaterThanDeadZoneLowerBound {
/// The value of the `livezone_lowerbound` parameter.
livezone_lowerbound: f32,
/// The value of the `deadzone_lowerbound` parameter.
deadzone_lowerbound: f32,
},
/// Parameter `deadzone_upperbound` was not less than or equal to parameter `livezone_upperbound`.
#[error("invalid parameter values livezone_upperbound {} deadzone_upperbound {}, expected deadzone_upperbound <= livezone_upperbound", .livezone_upperbound, .deadzone_upperbound)]
DeadZoneUpperBoundGreaterThanLiveZoneUpperBound {
/// The value of the `livezone_upperbound` parameter.
livezone_upperbound: f32,
/// The value of the `deadzone_upperbound` parameter.
deadzone_upperbound: f32,
},
/// The given parameter was not in range 0.0..=2.0.
#[error("invalid threshold {0}, expected 0.0 <= threshold <= 2.0")]
Threshold(f32),
}
/// Errors that occur when setting button settings for gamepad input.
#[derive(Error, Debug, PartialEq)]
pub enum ButtonSettingsError {
/// The given parameter was not in range 0.0..=1.0.
#[error("invalid release_threshold {0}, expected value [0.0..=1.0]")]
ReleaseThresholdOutOfRange(f32),
/// The given parameter was not in range 0.0..=1.0.
#[error("invalid press_threshold {0}, expected [0.0..=1.0]")]
PressThresholdOutOfRange(f32),
/// Parameter `release_threshold` was not less than or equal to `press_threshold`.
#[error("invalid parameter values release_threshold {} press_threshold {}, expected release_threshold <= press_threshold", .release_threshold, .press_threshold)]
ReleaseThresholdGreaterThanPressThreshold {
/// The value of the `press_threshold` parameter.
press_threshold: f32,
/// The value of the `release_threshold` parameter.
release_threshold: f32,
},
}
#[cfg(feature = "serialize")]
use bevy_reflect::{ReflectDeserialize, ReflectSerialize};
/// A gamepad with an associated `ID`.
///
/// ## Usage
///
/// The primary way to access the individual connected gamepads is done through the [`Gamepads`]
/// `bevy` resource. It is also used inside of [`GamepadConnectionEvent`]s to correspond a gamepad
/// with a connection event.
///
/// ## Note
///
/// The `ID` of a gamepad is fixed until the gamepad disconnects or the app is restarted.
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, Reflect)]
#[reflect(Debug, Hash, PartialEq)]
#[cfg_attr(
feature = "serialize",
derive(serde::Serialize, serde::Deserialize),
reflect(Serialize, Deserialize)
)]
pub struct Gamepad {
/// The `ID` of the gamepad.
pub id: usize,
}
impl Gamepad {
/// Creates a new [`Gamepad`].
pub fn new(id: usize) -> Self {
Self { id }
}
}
/// Metadata associated with a [`Gamepad`].
#[derive(Debug, Clone, PartialEq, Eq, Reflect)]
#[reflect(Debug, PartialEq)]
#[cfg_attr(
feature = "serialize",
derive(serde::Serialize, serde::Deserialize),
reflect(Serialize, Deserialize)
)]
pub struct GamepadInfo {
/// The name of the gamepad.
///
/// This name is generally defined by the OS.
///
/// For example on Windows the name may be "HID-compliant game controller".
pub name: String,
}
/// A collection of connected [`Gamepad`]s.
///
/// ## Usage
///
/// It is stored in a `bevy` resource which tracks all of the currently connected [`Gamepad`]s.
///
/// ## Updating
///
/// The [`Gamepad`]s are registered and deregistered in the [`gamepad_connection_system`]
/// whenever a [`GamepadConnectionEvent`] is received.
#[derive(Resource, Default, Debug)]
pub struct Gamepads {
/// The collection of the connected [`Gamepad`]s.
gamepads: HashMap<Gamepad, GamepadInfo>,
}
impl Gamepads {
/// Returns `true` if the `gamepad` is connected.
pub fn contains(&self, gamepad: Gamepad) -> bool {
self.gamepads.contains_key(&gamepad)
}
/// Returns an iterator over registered [`Gamepad`]s in an arbitrary order.
pub fn iter(&self) -> impl Iterator<Item = Gamepad> + '_ {
self.gamepads.keys().copied()
}
/// The name of the gamepad if this one is connected.
pub fn name(&self, gamepad: Gamepad) -> Option<&str> {
self.gamepads.get(&gamepad).map(|g| g.name.as_str())
}
/// Registers the `gamepad`, marking it as connected.
fn register(&mut self, gamepad: Gamepad, info: GamepadInfo) {
self.gamepads.insert(gamepad, info);
}
/// Deregisters the `gamepad`, marking it as disconnected.
fn deregister(&mut self, gamepad: Gamepad) {
self.gamepads.remove(&gamepad);
}
}
/// A type of a [`GamepadButton`].
///
/// ## Usage
///
/// This is used to determine which button has changed its value when receiving a
/// [`GamepadButtonChangedEvent`]. It is also used in the [`GamepadButton`]
/// which in turn is used to create the [`Input<GamepadButton>`] or
/// [`Axis<GamepadButton>`] `bevy` resources.
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, Reflect)]
#[reflect(Debug, Hash, PartialEq)]
#[cfg_attr(
feature = "serialize",
derive(serde::Serialize, serde::Deserialize),
reflect(Serialize, Deserialize)
)]
pub enum GamepadButtonType {
/// The bottom action button of the action pad (i.e. PS: Cross, Xbox: A).
South,
/// The right action button of the action pad (i.e. PS: Circle, Xbox: B).
East,
/// The upper action button of the action pad (i.e. PS: Triangle, Xbox: Y).
North,
/// The left action button of the action pad (i.e. PS: Square, Xbox: X).
West,
/// The C button.
C,
/// The Z button.
Z,
/// The first left trigger.
LeftTrigger,
/// The second left trigger.
LeftTrigger2,
/// The first right trigger.
RightTrigger,
/// The second right trigger.
RightTrigger2,
/// The select button.
Select,
/// The start button.
Start,
/// The mode button.
Mode,
/// The left thumb stick button.
LeftThumb,
/// The right thumb stick button.
RightThumb,
/// The up button of the D-Pad.
DPadUp,
/// The down button of the D-Pad.
DPadDown,
/// The left button of the D-Pad.
DPadLeft,
/// The right button of the D-Pad.
DPadRight,
/// Miscellaneous buttons, considered non-standard (i.e. Extra buttons on a flight stick that do not have a gamepad equivalent).
Other(u8),
}
/// A button of a [`Gamepad`].
///
/// ## Usage
///
/// It is used as the generic `T` value of an [`Input`] and [`Axis`] to create `bevy` resources. These
/// resources store the data of the buttons of a gamepad and can be accessed inside of a system.
///
/// ## Updating
///
/// The gamepad button resources are updated inside of the [`gamepad_button_event_system`].
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, Reflect)]
#[reflect(Debug, Hash, PartialEq)]
#[cfg_attr(
feature = "serialize",
derive(serde::Serialize, serde::Deserialize),
reflect(Serialize, Deserialize)
)]
pub struct GamepadButton {
/// The gamepad on which the button is located on.
pub gamepad: Gamepad,
/// The type of the button.
pub button_type: GamepadButtonType,
}
impl GamepadButton {
/// Creates a new [`GamepadButton`].
///
/// # Examples
///
/// ```
/// # use bevy_input::gamepad::{GamepadButton, GamepadButtonType, Gamepad};
/// #
/// let gamepad_button = GamepadButton::new(
/// Gamepad::new(1),
/// GamepadButtonType::South,
/// );
/// ```
pub fn new(gamepad: Gamepad, button_type: GamepadButtonType) -> Self {
Self {
gamepad,
button_type,
}
}
}
/// A gamepad button input event.
#[derive(Event, Debug, Clone, Copy, PartialEq, Eq, Reflect)]
#[reflect(Debug, PartialEq)]
#[cfg_attr(
feature = "serialize",
derive(serde::Serialize, serde::Deserialize),
reflect(Serialize, Deserialize)
)]
pub struct GamepadButtonInput {
/// The gamepad button assigned to the event.
pub button: GamepadButton,
/// The pressed state of the button.
pub state: ButtonState,
}
/// A type of a [`GamepadAxis`].
///
/// ## Usage
///
/// This is used to determine which axis has changed its value when receiving a
/// [`GamepadAxisChangedEvent`]. It is also used in the [`GamepadAxis`]
/// which in turn is used to create the [`Axis<GamepadAxis>`] `bevy` resource.
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, Reflect)]
#[reflect(Debug, Hash, PartialEq)]
#[cfg_attr(
feature = "serialize",
derive(serde::Serialize, serde::Deserialize),
reflect(Serialize, Deserialize)
)]
pub enum GamepadAxisType {
/// The horizontal value of the left stick.
LeftStickX,
/// The vertical value of the left stick.
LeftStickY,
/// The value of the left `Z` button.
LeftZ,
/// The horizontal value of the right stick.
RightStickX,
/// The vertical value of the right stick.
RightStickY,
/// The value of the right `Z` button.
RightZ,
/// Non-standard support for other axis types (i.e. HOTAS sliders, potentiometers, etc).
Other(u8),
}
/// An axis of a [`Gamepad`].
///
/// ## Usage
///
/// It is used as the generic `T` value of an [`Axis`] to create `bevy` resources. These
/// resources store the data of the axes of a gamepad and can be accessed inside of a system.
///
/// ## Updating
///
/// The gamepad axes resources are updated inside of the [`gamepad_axis_event_system`].
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, Reflect)]
#[reflect(Debug, Hash, PartialEq)]
#[cfg_attr(
feature = "serialize",
derive(serde::Serialize, serde::Deserialize),
reflect(Serialize, Deserialize)
)]
pub struct GamepadAxis {
/// The gamepad on which the axis is located on.
pub gamepad: Gamepad,
/// The type of the axis.
pub axis_type: GamepadAxisType,
}
impl GamepadAxis {
/// Creates a new [`GamepadAxis`].
///
/// # Examples
///
/// ```
/// # use bevy_input::gamepad::{GamepadAxis, GamepadAxisType, Gamepad};
/// #
/// let gamepad_axis = GamepadAxis::new(
/// Gamepad::new(1),
/// GamepadAxisType::LeftStickX,
/// );
/// ```
pub fn new(gamepad: Gamepad, axis_type: GamepadAxisType) -> Self {
Self { gamepad, axis_type }
}
}
/// Settings for all [`Gamepad`]s.
///
/// ## Usage
///
/// It is used to create a `bevy` resource that stores the settings of every [`GamepadButton`] and
/// [`GamepadAxis`]. If no user defined [`ButtonSettings`], [`AxisSettings`], or [`ButtonAxisSettings`]
/// are defined, the default settings of each are used as a fallback accordingly.
///
/// ## Note
///
/// The [`GamepadSettings`] are used inside of `bevy_gilrs` to determine when raw gamepad events from `gilrs`,
/// should register as a [`GamepadEvent`]. Events that don't meet the change thresholds defined in [`GamepadSettings`]
/// will not register. To modify these settings, mutate the corresponding resource.
#[derive(Resource, Default, Debug, Reflect)]
#[reflect(Debug, Default)]
pub struct GamepadSettings {
/// The default button settings.
pub default_button_settings: ButtonSettings,
/// The default axis settings.
pub default_axis_settings: AxisSettings,
/// The default button axis settings.
pub default_button_axis_settings: ButtonAxisSettings,
/// The user defined button settings.
pub button_settings: HashMap<GamepadButton, ButtonSettings>,
/// The user defined axis settings.
pub axis_settings: HashMap<GamepadAxis, AxisSettings>,
/// The user defined button axis settings.
pub button_axis_settings: HashMap<GamepadButton, ButtonAxisSettings>,
}
impl GamepadSettings {
/// Returns the [`ButtonSettings`] of the `button`.
///
/// If no user defined [`ButtonSettings`] are specified the default [`ButtonSettings`] get returned.
///
/// # Examples
///
/// ```
/// # use bevy_input::gamepad::{GamepadSettings, GamepadButton, Gamepad, GamepadButtonType};
/// #
/// # let settings = GamepadSettings::default();
/// let button = GamepadButton::new(Gamepad::new(1), GamepadButtonType::South);
/// let button_settings = settings.get_button_settings(button);
/// ```
pub fn get_button_settings(&self, button: GamepadButton) -> &ButtonSettings {
self.button_settings
.get(&button)
.unwrap_or(&self.default_button_settings)
}
/// Returns the [`AxisSettings`] of the `axis`.
///
/// If no user defined [`AxisSettings`] are specified the default [`AxisSettings`] get returned.
///
/// # Examples
///
/// ```
/// # use bevy_input::gamepad::{GamepadSettings, GamepadAxis, Gamepad, GamepadAxisType};
/// #
/// # let settings = GamepadSettings::default();
/// let axis = GamepadAxis::new(Gamepad::new(1), GamepadAxisType::LeftStickX);
/// let axis_settings = settings.get_axis_settings(axis);
/// ```
pub fn get_axis_settings(&self, axis: GamepadAxis) -> &AxisSettings {
self.axis_settings
.get(&axis)
.unwrap_or(&self.default_axis_settings)
}
/// Returns the [`ButtonAxisSettings`] of the `button`.
///
/// If no user defined [`ButtonAxisSettings`] are specified the default [`ButtonAxisSettings`] get returned.
///
/// # Examples
///
/// ```
/// # use bevy_input::gamepad::{GamepadSettings, GamepadButton, Gamepad, GamepadButtonType};
/// #
/// # let settings = GamepadSettings::default();
/// let button = GamepadButton::new(Gamepad::new(1), GamepadButtonType::South);
/// let button_axis_settings = settings.get_button_axis_settings(button);
/// ```
pub fn get_button_axis_settings(&self, button: GamepadButton) -> &ButtonAxisSettings {
self.button_axis_settings
.get(&button)
.unwrap_or(&self.default_button_axis_settings)
}
}
/// Manages settings for gamepad buttons.
///
/// It is used inside of [`GamepadSettings`] to define the threshold for a gamepad button
/// to be considered pressed or released. A button is considered pressed if the `press_threshold`
/// value is surpassed and released if the `release_threshold` value is undercut.
///
/// Allowed values: `0.0 <= ``release_threshold`` <= ``press_threshold`` <= 1.0`
#[derive(Debug, Clone, Reflect)]
#[reflect(Debug, Default)]
pub struct ButtonSettings {
press_threshold: f32,
release_threshold: f32,
}
impl Default for ButtonSettings {
fn default() -> Self {
ButtonSettings {
press_threshold: 0.75,
release_threshold: 0.65,
}
}
}
impl ButtonSettings {
/// Creates a new [`ButtonSettings`] instance.
///
/// # Parameters
///
/// + `press_threshold` is the button input value above which the button is considered pressed.
/// + `release_threshold` is the button input value below which the button is considered released.
///
/// Restrictions:
/// + `0.0 <= ``release_threshold`` <= ``press_threshold`` <= 1.0`
///
/// # Errors
///
/// If the restrictions are not met, returns one of
/// `GamepadSettingsError::ButtonReleaseThresholdOutOfRange`,
/// `GamepadSettingsError::ButtonPressThresholdOutOfRange`, or
/// `GamepadSettingsError::ButtonReleaseThresholdGreaterThanPressThreshold`.
pub fn new(
press_threshold: f32,
release_threshold: f32,
) -> Result<ButtonSettings, ButtonSettingsError> {
if !(0.0..=1.0).contains(&release_threshold) {
Err(ButtonSettingsError::ReleaseThresholdOutOfRange(
release_threshold,
))
} else if !(0.0..=1.0).contains(&press_threshold) {
Err(ButtonSettingsError::PressThresholdOutOfRange(
press_threshold,
))
} else if release_threshold > press_threshold {
Err(
ButtonSettingsError::ReleaseThresholdGreaterThanPressThreshold {
press_threshold,
release_threshold,
},
)
} else {
Ok(ButtonSettings {
press_threshold,
release_threshold,
})
}
}
/// Returns `true` if the button is pressed.
///
/// A button is considered pressed if the `value` passed is greater than or equal to the press threshold.
fn is_pressed(&self, value: f32) -> bool {
value >= self.press_threshold
}
/// Returns `true` if the button is released.
///
/// A button is considered released if the `value` passed is lower than or equal to the release threshold.
fn is_released(&self, value: f32) -> bool {
value <= self.release_threshold
}
/// Get the button input threshold above which the button is considered pressed.
pub fn press_threshold(&self) -> f32 {
self.press_threshold
}
/// Try to set the button input threshold above which the button is considered pressed.
///
/// # Errors
///
/// If the value passed is outside the range [release threshold..=1.0], returns either
/// `GamepadSettingsError::ButtonPressThresholdOutOfRange` or
/// `GamepadSettingsError::ButtonReleaseThresholdGreaterThanPressThreshold`.
pub fn try_set_press_threshold(&mut self, value: f32) -> Result<(), ButtonSettingsError> {
if (self.release_threshold..=1.0).contains(&value) {
self.press_threshold = value;
Ok(())
} else if !(0.0..1.0).contains(&value) {
Err(ButtonSettingsError::PressThresholdOutOfRange(value))
} else {
Err(
ButtonSettingsError::ReleaseThresholdGreaterThanPressThreshold {
press_threshold: value,
release_threshold: self.release_threshold,
},
)
}
}
/// Try to set the button input threshold above which the button is considered pressed.
/// If the value passed is outside the range [release threshold..=1.0], the value will not be changed.
///
/// Returns the new value of the press threshold.
pub fn set_press_threshold(&mut self, value: f32) -> f32 {
self.try_set_press_threshold(value).ok();
self.press_threshold
}
/// Get the button input threshold below which the button is considered released.
pub fn release_threshold(&self) -> f32 {
self.release_threshold
}
/// Try to set the button input threshold below which the button is considered released.
///
/// # Errors
///
/// If the value passed is outside the range [0.0..=press threshold], returns
/// `ButtonSettingsError::ReleaseThresholdOutOfRange` or
/// `ButtonSettingsError::ReleaseThresholdGreaterThanPressThreshold`.
pub fn try_set_release_threshold(&mut self, value: f32) -> Result<(), ButtonSettingsError> {
if (0.0..=self.press_threshold).contains(&value) {
self.release_threshold = value;
Ok(())
} else if !(0.0..1.0).contains(&value) {
Err(ButtonSettingsError::ReleaseThresholdOutOfRange(value))
} else {
Err(
ButtonSettingsError::ReleaseThresholdGreaterThanPressThreshold {
press_threshold: self.press_threshold,
release_threshold: value,
},
)
}
}
/// Try to set the button input threshold below which the button is considered released. If the
/// value passed is outside the range [0.0..=press threshold], the value will not be changed.
///
/// Returns the new value of the release threshold.
pub fn set_release_threshold(&mut self, value: f32) -> f32 {
self.try_set_release_threshold(value).ok();
self.release_threshold
}
}
/// Settings for a [`GamepadAxis`].
///
/// It is used inside of the [`GamepadSettings`] to define the sensitivity range and
/// threshold for an axis.
/// Values that are higher than `livezone_upperbound` will be rounded up to 1.0.
/// Values that are lower than `livezone_lowerbound` will be rounded down to -1.0.
/// Values that are in-between `deadzone_lowerbound` and `deadzone_upperbound` will be rounded
/// to 0.0.
/// Otherwise, values will not be rounded.
///
/// The valid range is `[-1.0, 1.0]`.
#[derive(Debug, Clone, Reflect, PartialEq)]
#[reflect(Debug, Default)]
pub struct AxisSettings {
/// Values that are higher than `livezone_upperbound` will be rounded up to 1.0.
livezone_upperbound: f32,
/// Positive values that are less than `deadzone_upperbound` will be rounded down to 0.0.
deadzone_upperbound: f32,
/// Negative values that are greater than `deadzone_lowerbound` will be rounded up to 0.0.
deadzone_lowerbound: f32,
/// Values that are lower than `livezone_lowerbound` will be rounded down to -1.0.
livezone_lowerbound: f32,
/// `threshold` defines the minimum difference between old and new values to apply the changes.
threshold: f32,
}
impl Default for AxisSettings {
fn default() -> Self {
AxisSettings {
livezone_upperbound: 0.95,
deadzone_upperbound: 0.05,
deadzone_lowerbound: -0.05,
livezone_lowerbound: -0.95,
threshold: 0.01,
}
}
}
impl AxisSettings {
/// Creates a new [`AxisSettings`] instance.
///
/// # Arguments
///
/// + `livezone_lowerbound` - the value below which inputs will be rounded down to -1.0.
/// + `deadzone_lowerbound` - the value above which negative inputs will be rounded up to 0.0.
/// + `deadzone_upperbound` - the value below which positive inputs will be rounded down to 0.0.
/// + `livezone_upperbound` - the value above which inputs will be rounded up to 1.0.
/// + `threshold` - the minimum value by which input must change before the change is registered.
///
/// Restrictions:
///
/// + `-1.0 <= livezone_lowerbound <= deadzone_lowerbound <= 0.0`
/// + `0.0 <= deadzone_upperbound <= livezone_upperbound <= 1.0`
/// + `0.0 <= threshold <= 2.0`
///
/// # Errors
///
/// Returns an [`AxisSettingsError`] if any restrictions on the zone values are not met.
/// If the zone restrictions are met, but the `threshold` value restrictions are not met,
/// returns [`AxisSettingsError::Threshold`].
pub fn new(
livezone_lowerbound: f32,
deadzone_lowerbound: f32,
deadzone_upperbound: f32,
livezone_upperbound: f32,
threshold: f32,
) -> Result<AxisSettings, AxisSettingsError> {
if !(-1.0..=0.0).contains(&livezone_lowerbound) {
Err(AxisSettingsError::LiveZoneLowerBoundOutOfRange(
livezone_lowerbound,
))
} else if !(-1.0..=0.0).contains(&deadzone_lowerbound) {
Err(AxisSettingsError::DeadZoneLowerBoundOutOfRange(
deadzone_lowerbound,
))
} else if !(0.0..=1.0).contains(&deadzone_upperbound) {
Err(AxisSettingsError::DeadZoneUpperBoundOutOfRange(
deadzone_upperbound,
))
} else if !(0.0..=1.0).contains(&livezone_upperbound) {
Err(AxisSettingsError::LiveZoneUpperBoundOutOfRange(
livezone_upperbound,
))
} else if livezone_lowerbound > deadzone_lowerbound {
Err(
AxisSettingsError::LiveZoneLowerBoundGreaterThanDeadZoneLowerBound {
livezone_lowerbound,
deadzone_lowerbound,
},
)
} else if deadzone_upperbound > livezone_upperbound {
Err(
AxisSettingsError::DeadZoneUpperBoundGreaterThanLiveZoneUpperBound {
livezone_upperbound,
deadzone_upperbound,
},
)
} else if !(0.0..=2.0).contains(&threshold) {
Err(AxisSettingsError::Threshold(threshold))
} else {
Ok(Self {
livezone_lowerbound,
deadzone_lowerbound,
deadzone_upperbound,
livezone_upperbound,
threshold,
})
}
}
/// Get the value above which inputs will be rounded up to 1.0.
pub fn livezone_upperbound(&self) -> f32 {
self.livezone_upperbound
}
/// Try to set the value above which inputs will be rounded up to 1.0.
///
/// # Errors
///
/// If the value passed is less than the dead zone upper bound,
/// returns `AxisSettingsError::DeadZoneUpperBoundGreaterThanLiveZoneUpperBound`.
/// If the value passed is not in range [0.0..=1.0], returns `AxisSettingsError::LiveZoneUpperBoundOutOfRange`.
pub fn try_set_livezone_upperbound(&mut self, value: f32) -> Result<(), AxisSettingsError> {
if !(0.0..=1.0).contains(&value) {
Err(AxisSettingsError::LiveZoneUpperBoundOutOfRange(value))
} else if value < self.deadzone_upperbound {
Err(
AxisSettingsError::DeadZoneUpperBoundGreaterThanLiveZoneUpperBound {
livezone_upperbound: value,
deadzone_upperbound: self.deadzone_upperbound,
},
)
} else {
self.livezone_upperbound = value;
Ok(())
}
}
/// Try to set the value above which inputs will be rounded up to 1.0.
/// If the value passed is negative or less than `deadzone_upperbound`,
/// the value will not be changed.
///
/// Returns the new value of `livezone_upperbound`.
pub fn set_livezone_upperbound(&mut self, value: f32) -> f32 {
self.try_set_livezone_upperbound(value).ok();
self.livezone_upperbound
}
/// Get the value below which positive inputs will be rounded down to 0.0.
pub fn deadzone_upperbound(&self) -> f32 {
self.deadzone_upperbound
}
/// Try to set the value below which positive inputs will be rounded down to 0.0.
///
/// # Errors
///
/// If the value passed is greater than the live zone upper bound,
/// returns `AxisSettingsError::DeadZoneUpperBoundGreaterThanLiveZoneUpperBound`.
/// If the value passed is not in range [0.0..=1.0], returns `AxisSettingsError::DeadZoneUpperBoundOutOfRange`.
pub fn try_set_deadzone_upperbound(&mut self, value: f32) -> Result<(), AxisSettingsError> {
if !(0.0..=1.0).contains(&value) {
Err(AxisSettingsError::DeadZoneUpperBoundOutOfRange(value))
} else if self.livezone_upperbound < value {
Err(
AxisSettingsError::DeadZoneUpperBoundGreaterThanLiveZoneUpperBound {
livezone_upperbound: self.livezone_upperbound,
deadzone_upperbound: value,
},
)
} else {
self.deadzone_upperbound = value;
Ok(())
}
}
/// Try to set the value below which positive inputs will be rounded down to 0.0.
/// If the value passed is negative or greater than `livezone_upperbound`,
/// the value will not be changed.
///
/// Returns the new value of `deadzone_upperbound`.
pub fn set_deadzone_upperbound(&mut self, value: f32) -> f32 {
self.try_set_deadzone_upperbound(value).ok();
self.deadzone_upperbound
}
/// Get the value below which negative inputs will be rounded down to -1.0.
pub fn livezone_lowerbound(&self) -> f32 {
self.livezone_lowerbound
}
/// Try to set the value below which negative inputs will be rounded down to -1.0.
///
/// # Errors
///
/// If the value passed is less than the dead zone lower bound,
/// returns `AxisSettingsError::LiveZoneLowerBoundGreaterThanDeadZoneLowerBound`.
/// If the value passed is not in range [-1.0..=0.0], returns `AxisSettingsError::LiveZoneLowerBoundOutOfRange`.
pub fn try_set_livezone_lowerbound(&mut self, value: f32) -> Result<(), AxisSettingsError> {
if !(-1.0..=0.0).contains(&value) {
Err(AxisSettingsError::LiveZoneLowerBoundOutOfRange(value))
} else if value > self.deadzone_lowerbound {
Err(
AxisSettingsError::LiveZoneLowerBoundGreaterThanDeadZoneLowerBound {
livezone_lowerbound: value,
deadzone_lowerbound: self.deadzone_lowerbound,
},
)
} else {
self.livezone_lowerbound = value;
Ok(())
}
}
/// Try to set the value below which negative inputs will be rounded down to -1.0.
/// If the value passed is positive or greater than `deadzone_lowerbound`,
/// the value will not be changed.
///
/// Returns the new value of `livezone_lowerbound`.
pub fn set_livezone_lowerbound(&mut self, value: f32) -> f32 {
self.try_set_livezone_lowerbound(value).ok();
self.livezone_lowerbound
}
/// Get the value above which inputs will be rounded up to 0.0.
pub fn deadzone_lowerbound(&self) -> f32 {
self.deadzone_lowerbound
}
/// Try to set the value above which inputs will be rounded up to 0.0.
///
/// # Errors
///
/// If the value passed is less than the live zone lower bound,
/// returns `AxisSettingsError::LiveZoneLowerBoundGreaterThanDeadZoneLowerBound`.
/// If the value passed is not in range [-1.0..=0.0], returns `AxisSettingsError::DeadZoneLowerBoundOutOfRange`.
pub fn try_set_deadzone_lowerbound(&mut self, value: f32) -> Result<(), AxisSettingsError> {
if !(-1.0..=0.0).contains(&value) {
Err(AxisSettingsError::DeadZoneLowerBoundOutOfRange(value))
} else if self.livezone_lowerbound > value {
Err(
AxisSettingsError::LiveZoneLowerBoundGreaterThanDeadZoneLowerBound {
livezone_lowerbound: self.livezone_lowerbound,
deadzone_lowerbound: value,
},
)
} else {
self.deadzone_lowerbound = value;
Ok(())
}
}
/// Try to set the value above which inputs will be rounded up to 0.0.
/// If the value passed is less than -1.0 or less than `livezone_lowerbound`,
/// the value will not be changed.
///
/// Returns the new value of `deadzone_lowerbound`.
pub fn set_deadzone_lowerbound(&mut self, value: f32) -> f32 {
self.try_set_deadzone_lowerbound(value).ok();
self.deadzone_lowerbound
}
/// Get the minimum value by which input must change before the change is registered.
pub fn threshold(&self) -> f32 {
self.threshold
}
/// Try to set the minimum value by which input must change before the change is registered.
///
/// # Errors
///
/// If the value passed is not within [0.0..=2.0], returns `GamepadSettingsError::AxisThreshold`.
pub fn try_set_threshold(&mut self, value: f32) -> Result<(), AxisSettingsError> {
if !(0.0..=2.0).contains(&value) {
Err(AxisSettingsError::Threshold(value))
} else {
self.threshold = value;
Ok(())
}
}
/// Try to set the minimum value by which input must change before the changes will be applied.
/// If the value passed is not within [0.0..=2.0], the value will not be changed.
///
/// Returns the new value of threshold.
pub fn set_threshold(&mut self, value: f32) -> f32 {
self.try_set_threshold(value).ok();
self.threshold
}
/// Clamps the `raw_value` according to the `AxisSettings`.
pub fn clamp(&self, new_value: f32) -> f32 {
if self.deadzone_lowerbound <= new_value && new_value <= self.deadzone_upperbound {
0.0
} else if new_value >= self.livezone_upperbound {
1.0
} else if new_value <= self.livezone_lowerbound {
-1.0
} else {
new_value
}
}
/// Determines whether the change from `old_value` to `new_value` should
/// be registered as a change, according to the [`AxisSettings`].
fn should_register_change(&self, new_value: f32, old_value: Option<f32>) -> bool {
if old_value.is_none() {
return true;
}
f32::abs(new_value - old_value.unwrap()) > self.threshold
}
/// Filters the `new_value` based on the `old_value`, according to the [`AxisSettings`].
///
/// Returns the clamped `new_value` if the change exceeds the settings threshold,
/// and `None` otherwise.
pub fn filter(&self, new_value: f32, old_value: Option<f32>) -> Option<f32> {
let new_value = self.clamp(new_value);
if self.should_register_change(new_value, old_value) {
return Some(new_value);
}
None
}
}
/// Settings for a [`GamepadButton`].
///
/// It is used inside of the [`GamepadSettings`] to define the sensitivity range and
/// threshold for a button axis.
///
/// ## Logic
///
/// - Values that are higher than or equal to `high` will be rounded to 1.0.
/// - Values that are lower than or equal to `low` will be rounded to 0.0.
/// - Otherwise, values will not be rounded.
///
/// The valid range is from 0.0 to 1.0, inclusive.
///
/// ## Updating
///
/// The current value of a button is received through the [`GamepadButtonChangedEvent`].
#[derive(Debug, Clone, Reflect)]
#[reflect(Debug, Default)]
pub struct ButtonAxisSettings {
/// The high value at which to apply rounding.
pub high: f32,
/// The low value at which to apply rounding.
pub low: f32,
/// The threshold to apply rounding.
pub threshold: f32,
}
impl Default for ButtonAxisSettings {
fn default() -> Self {
ButtonAxisSettings {
high: 0.95,
low: 0.05,
threshold: 0.01,
}
}
}
impl ButtonAxisSettings {
/// Clamps the `raw_value` according to the specified settings.
///
/// If the `raw_value` is:
/// - lower than or equal to `low` it will be rounded to 0.0.
/// - higher than or equal to `high` it will be rounded to 1.0.
/// - Otherwise it will not be rounded.
fn clamp(&self, raw_value: f32) -> f32 {
if raw_value <= self.low {
return 0.0;
}
if raw_value >= self.high {
return 1.0;
}
raw_value
}
/// Determines whether the change from an `old_value` to a `new_value` should
/// be registered as a change event, according to the specified settings.
fn should_register_change(&self, new_value: f32, old_value: Option<f32>) -> bool {
if old_value.is_none() {
return true;
}
f32::abs(new_value - old_value.unwrap()) > self.threshold
}
/// Filters the `new_value` based on the `old_value`, according to the [`ButtonAxisSettings`].
///
/// Returns the clamped `new_value`, according to the [`ButtonAxisSettings`], if the change
/// exceeds the settings threshold, and `None` otherwise.
pub fn filter(&self, new_value: f32, old_value: Option<f32>) -> Option<f32> {
let new_value = self.clamp(new_value);
if self.should_register_change(new_value, old_value) {
return Some(new_value);
}
None
}
}
/// Handles [`GamepadConnectionEvent`]s and updates gamepad resources.
///
/// Updates the [`Gamepads`] resource and resets and/or initializes
/// the [`Axis<GamepadButton>`] and [`Input<GamepadButton>`] resources.
///
/// ## Note
///
/// Whenever a [`Gamepad`] connects or disconnects, an information gets printed to the console using the [`info!`] macro.
pub fn gamepad_connection_system(
mut gamepads: ResMut<Gamepads>,
mut connection_events: EventReader<GamepadConnectionEvent>,
mut axis: ResMut<Axis<GamepadAxis>>,
mut button_axis: ResMut<Axis<GamepadButton>>,
mut button_input: ResMut<Input<GamepadButton>>,
) {
for connection_event in connection_events.iter() {
let gamepad = connection_event.gamepad;
if let GamepadConnection::Connected(info) = &connection_event.connection {
gamepads.register(gamepad, info.clone());
info!("{:?} Connected", gamepad);
for button_type in &ALL_BUTTON_TYPES {
let gamepad_button = GamepadButton::new(gamepad, *button_type);
button_input.reset(gamepad_button);
button_axis.set(gamepad_button, 0.0);
}
for axis_type in &ALL_AXIS_TYPES {
axis.set(GamepadAxis::new(gamepad, *axis_type), 0.0);
}
} else {
gamepads.deregister(gamepad);
info!("{:?} Disconnected", gamepad);
for button_type in &ALL_BUTTON_TYPES {
let gamepad_button = GamepadButton::new(gamepad, *button_type);
button_input.reset(gamepad_button);
button_axis.remove(gamepad_button);
}
for axis_type in &ALL_AXIS_TYPES {
axis.remove(GamepadAxis::new(gamepad, *axis_type));
}
}
}
}
/// The connection status of a gamepad.
#[derive(Debug, Clone, PartialEq, Reflect)]
#[reflect(Debug, PartialEq)]
#[cfg_attr(
feature = "serialize",
derive(serde::Serialize, serde::Deserialize),
reflect(Serialize, Deserialize)
)]
pub enum GamepadConnection {
/// The gamepad is connected.
Connected(GamepadInfo),
/// The gamepad is disconnected.
Disconnected,
}
/// A Gamepad connection event. Created when a connection to a gamepad
/// is established and when a gamepad is disconnected.
#[derive(Event, Debug, Clone, PartialEq, Reflect)]
#[reflect(Debug, PartialEq)]
#[cfg_attr(
feature = "serialize",
derive(serde::Serialize, serde::Deserialize),
reflect(Serialize, Deserialize)
)]
pub struct GamepadConnectionEvent {
/// The gamepad whose connection status changed.
pub gamepad: Gamepad,
/// The change in the gamepads connection.
pub connection: GamepadConnection,
}
impl GamepadConnectionEvent {
/// Creates a [`GamepadConnectionEvent`].
pub fn new(gamepad: Gamepad, connection: GamepadConnection) -> Self {
Self {
gamepad,
connection,
}
}
/// Is the gamepad connected?
pub fn connected(&self) -> bool {
matches!(self.connection, GamepadConnection::Connected(_))
}
/// Is the gamepad disconnected?
pub fn disconnected(&self) -> bool {
!self.connected()
}
}
/// Gamepad event for when the "value" on the axis changes
/// by an amount larger than the threshold defined in [`GamepadSettings`].
#[derive(Event, Debug, Clone, PartialEq, Reflect)]
#[reflect(Debug, PartialEq)]
#[cfg_attr(
feature = "serialize",
derive(serde::Serialize, serde::Deserialize),
reflect(Serialize, Deserialize)
)]
pub struct GamepadAxisChangedEvent {
/// The gamepad on which the axis is triggered.
pub gamepad: Gamepad,
/// The type of the triggered axis.
pub axis_type: GamepadAxisType,
/// The value of the axis.
pub value: f32,
}
impl GamepadAxisChangedEvent {
/// Creates a [`GamepadAxisChangedEvent`].
pub fn new(gamepad: Gamepad, axis_type: GamepadAxisType, value: f32) -> Self {
Self {
gamepad,
axis_type,
value,
}
}
}
/// Gamepad event for when the "value" (amount of pressure) on the button
/// changes by an amount larger than the threshold defined in [`GamepadSettings`].
#[derive(Event, Debug, Clone, PartialEq, Reflect)]
#[reflect(Debug, PartialEq)]
#[cfg_attr(
feature = "serialize",
derive(serde::Serialize, serde::Deserialize),
reflect(Serialize, Deserialize)
)]
pub struct GamepadButtonChangedEvent {
/// The gamepad on which the button is triggered.
pub gamepad: Gamepad,
/// The type of the triggered button.
pub button_type: GamepadButtonType,
/// The value of the button.
pub value: f32,
}
impl GamepadButtonChangedEvent {
/// Creates a [`GamepadButtonChangedEvent`].
pub fn new(gamepad: Gamepad, button_type: GamepadButtonType, value: f32) -> Self {
Self {
gamepad,
button_type,
value,
}
}
}
/// Uses [`GamepadAxisChangedEvent`]s to update the relevant [`Input`] and [`Axis`] values.
pub fn gamepad_axis_event_system(
mut gamepad_axis: ResMut<Axis<GamepadAxis>>,
mut axis_events: EventReader<GamepadAxisChangedEvent>,
) {
for axis_event in axis_events.iter() {
let axis = GamepadAxis::new(axis_event.gamepad, axis_event.axis_type);
gamepad_axis.set(axis, axis_event.value);
}
}
/// Uses [`GamepadButtonChangedEvent`]s to update the relevant [`Input`] and [`Axis`] values.
pub fn gamepad_button_event_system(
mut button_changed_events: EventReader<GamepadButtonChangedEvent>,
mut button_input: ResMut<Input<GamepadButton>>,
mut button_input_events: EventWriter<GamepadButtonInput>,
settings: Res<GamepadSettings>,
) {
for button_event in button_changed_events.iter() {
let button = GamepadButton::new(button_event.gamepad, button_event.button_type);
let value = button_event.value;
let button_property = settings.get_button_settings(button);
if button_property.is_released(value) {
// Check if button was previously pressed
if button_input.pressed(button) {
button_input_events.send(GamepadButtonInput {
button,
state: ButtonState::Released,
});
}
// We don't have to check if the button was previously pressed here
// because that check is performed within Input<T>::release()
button_input.release(button);
} else if button_property.is_pressed(value) {
// Check if button was previously not pressed
if !button_input.pressed(button) {
button_input_events.send(GamepadButtonInput {
button,
state: ButtonState::Pressed,
});
}
button_input.press(button);
};
}
}
/// A gamepad event.
///
/// This event type is used over the [`GamepadConnectionEvent`],
/// [`GamepadButtonChangedEvent`] and [`GamepadAxisChangedEvent`] when
/// the in-frame relative ordering of events is important.
#[derive(Event, Debug, Clone, PartialEq, Reflect)]
#[reflect(Debug, PartialEq)]
#[cfg_attr(
feature = "serialize",
derive(serde::Serialize, serde::Deserialize),
reflect(Serialize, Deserialize)
)]
pub enum GamepadEvent {
/// A gamepad has been connected or disconnected.
Connection(GamepadConnectionEvent),
/// A button of the gamepad has been triggered.
Button(GamepadButtonChangedEvent),
/// An axis of the gamepad has been triggered.
Axis(GamepadAxisChangedEvent),
}
impl From<GamepadConnectionEvent> for GamepadEvent {
fn from(value: GamepadConnectionEvent) -> Self {
Self::Connection(value)
}
}
impl From<GamepadButtonChangedEvent> for GamepadEvent {
fn from(value: GamepadButtonChangedEvent) -> Self {
Self::Button(value)
}
}
impl From<GamepadAxisChangedEvent> for GamepadEvent {
fn from(value: GamepadAxisChangedEvent) -> Self {
Self::Axis(value)
}
}
/// Splits the [`GamepadEvent`] event stream into it's component events.
pub fn gamepad_event_system(
mut gamepad_events: EventReader<GamepadEvent>,
mut connection_events: EventWriter<GamepadConnectionEvent>,
mut button_events: EventWriter<GamepadButtonChangedEvent>,
mut axis_events: EventWriter<GamepadAxisChangedEvent>,
mut button_input: ResMut<Input<GamepadButton>>,
) {
button_input.bypass_change_detection().clear();
for gamepad_event in gamepad_events.iter() {
match gamepad_event {
GamepadEvent::Connection(connection_event) => {
connection_events.send(connection_event.clone());
}
GamepadEvent::Button(button_event) => button_events.send(button_event.clone()),
GamepadEvent::Axis(axis_event) => axis_events.send(axis_event.clone()),
}
}
}
/// An array of every [`GamepadButtonType`] variant.
const ALL_BUTTON_TYPES: [GamepadButtonType; 19] = [
GamepadButtonType::South,
GamepadButtonType::East,
GamepadButtonType::North,
GamepadButtonType::West,
GamepadButtonType::C,
GamepadButtonType::Z,
GamepadButtonType::LeftTrigger,
GamepadButtonType::LeftTrigger2,
GamepadButtonType::RightTrigger,
GamepadButtonType::RightTrigger2,
GamepadButtonType::Select,
GamepadButtonType::Start,
GamepadButtonType::Mode,
GamepadButtonType::LeftThumb,
GamepadButtonType::RightThumb,
GamepadButtonType::DPadUp,
GamepadButtonType::DPadDown,
GamepadButtonType::DPadLeft,
GamepadButtonType::DPadRight,
];
/// An array of every [`GamepadAxisType`] variant.
const ALL_AXIS_TYPES: [GamepadAxisType; 6] = [
GamepadAxisType::LeftStickX,
GamepadAxisType::LeftStickY,
GamepadAxisType::LeftZ,
GamepadAxisType::RightStickX,
GamepadAxisType::RightStickY,
GamepadAxisType::RightZ,
];
/// The intensity at which a gamepad's force-feedback motors may rumble.
#[derive(Clone, Copy, Debug, PartialEq)]
pub struct GamepadRumbleIntensity {
/// The rumble intensity of the strong gamepad motor.
///
/// Ranges from `0.0` to `1.0`.
///
/// By convention, this is usually a low-frequency motor on the left-hand
/// side of the gamepad, though it may vary across platforms and hardware.
pub strong_motor: f32,
/// The rumble intensity of the weak gamepad motor.
///
/// Ranges from `0.0` to `1.0`.
///
/// By convention, this is usually a high-frequency motor on the right-hand
/// side of the gamepad, though it may vary across platforms and hardware.
pub weak_motor: f32,
}
impl GamepadRumbleIntensity {
/// Rumble both gamepad motors at maximum intensity.
pub const MAX: Self = GamepadRumbleIntensity {
strong_motor: 1.0,
weak_motor: 1.0,
};
/// Rumble the weak motor at maximum intensity.
pub const WEAK_MAX: Self = GamepadRumbleIntensity {
strong_motor: 0.0,
weak_motor: 1.0,
};
/// Rumble the strong motor at maximum intensity.
pub const STRONG_MAX: Self = GamepadRumbleIntensity {
strong_motor: 1.0,
weak_motor: 0.0,
};
/// Creates a new rumble intensity with weak motor intensity set to the given value.
///
/// Clamped within the `0.0` to `1.0` range.
pub const fn weak_motor(intensity: f32) -> Self {
Self {
weak_motor: intensity,
strong_motor: 0.0,
}
}
/// Creates a new rumble intensity with strong motor intensity set to the given value.
///
/// Clamped within the `0.0` to `1.0` range.
pub const fn strong_motor(intensity: f32) -> Self {
Self {
strong_motor: intensity,
weak_motor: 0.0,
}
}
}
/// An event that controls force-feedback rumbling of a [`Gamepad`].
///
/// # Notes
///
/// Does nothing if the gamepad or platform does not support rumble.
///
/// # Example
///
/// ```
/// # use bevy_input::gamepad::{Gamepad, Gamepads, GamepadRumbleRequest, GamepadRumbleIntensity};
/// # use bevy_ecs::prelude::{EventWriter, Res};
/// # use bevy_utils::Duration;
/// fn rumble_gamepad_system(
/// mut rumble_requests: EventWriter<GamepadRumbleRequest>,
/// gamepads: Res<Gamepads>
/// ) {
/// for gamepad in gamepads.iter() {
/// rumble_requests.send(GamepadRumbleRequest::Add {
/// gamepad,
/// intensity: GamepadRumbleIntensity::MAX,
/// duration: Duration::from_secs_f32(0.5),
/// });
/// }
/// }
/// ```
#[doc(alias = "haptic feedback")]
#[doc(alias = "force feedback")]
#[doc(alias = "vibration")]
#[doc(alias = "vibrate")]
#[derive(Event, Clone)]
pub enum GamepadRumbleRequest {
/// Add a rumble to the given gamepad.
///
/// Simultaneous rumble effects add up to the sum of their strengths.
///
/// Consequently, if two rumbles at half intensity are added at the same
/// time, their intensities will be added up, and the controller will rumble
/// at full intensity until one of the rumbles finishes, then the rumble
/// will continue at the intensity of the remaining event.
///
/// To replace an existing rumble, send a [`GamepadRumbleRequest::Stop`] event first.
Add {
/// How long the gamepad should rumble.
duration: Duration,
/// How intense the rumble should be.
intensity: GamepadRumbleIntensity,
/// The gamepad to rumble.
gamepad: Gamepad,
},
/// Stop all running rumbles on the given [`Gamepad`].
Stop {
/// The gamepad to stop rumble.
gamepad: Gamepad,
},
}
impl GamepadRumbleRequest {
/// Get the [`Gamepad`] associated with this request.
pub fn gamepad(&self) -> Gamepad {
match self {
Self::Add { gamepad, .. } | Self::Stop { gamepad } => *gamepad,
}
}
}
#[cfg(test)]
mod tests {
use crate::gamepad::{AxisSettingsError, ButtonSettingsError};
use super::{AxisSettings, ButtonAxisSettings, ButtonSettings};
fn test_button_axis_settings_filter(
settings: ButtonAxisSettings,
new_value: f32,
old_value: Option<f32>,
expected: Option<f32>,
) {
let actual = settings.filter(new_value, old_value);
assert_eq!(
expected, actual,
"Testing filtering for {settings:?} with new_value = {new_value:?}, old_value = {old_value:?}",
);
}
#[test]
fn test_button_axis_settings_default_filter() {
let cases = [
(1.0, None, Some(1.0)),
(0.99, None, Some(1.0)),
(0.96, None, Some(1.0)),
(0.95, None, Some(1.0)),
(0.9499, None, Some(0.9499)),
(0.84, None, Some(0.84)),
(0.43, None, Some(0.43)),
(0.05001, None, Some(0.05001)),
(0.05, None, Some(0.0)),
(0.04, None, Some(0.0)),
(0.01, None, Some(0.0)),
(0.0, None, Some(0.0)),
];
for (new_value, old_value, expected) in cases {
let settings = ButtonAxisSettings::default();
test_button_axis_settings_filter(settings, new_value, old_value, expected);
}
}
#[test]
fn test_button_axis_settings_default_filter_with_old_value() {
let cases = [
(0.43, Some(0.44001), Some(0.43)),
(0.43, Some(0.44), None),
(0.43, Some(0.43), None),
(0.43, Some(0.41999), Some(0.43)),
(0.43, Some(0.17), Some(0.43)),
(0.43, Some(0.84), Some(0.43)),
(0.05, Some(0.055), Some(0.0)),
(0.95, Some(0.945), Some(1.0)),
];
for (new_value, old_value, expected) in cases {
let settings = ButtonAxisSettings::default();
test_button_axis_settings_filter(settings, new_value, old_value, expected);
}
}
fn test_axis_settings_filter(
settings: AxisSettings,
new_value: f32,
old_value: Option<f32>,
expected: Option<f32>,
) {
let actual = settings.filter(new_value, old_value);
assert_eq!(
expected, actual,
"Testing filtering for {settings:?} with new_value = {new_value:?}, old_value = {old_value:?}",
);
}
#[test]
fn test_axis_settings_default_filter() {
let cases = [
(1.0, Some(1.0)),
(0.99, Some(1.0)),
(0.96, Some(1.0)),
(0.95, Some(1.0)),
(0.9499, Some(0.9499)),
(0.84, Some(0.84)),
(0.43, Some(0.43)),
(0.05001, Some(0.05001)),
(0.05, Some(0.0)),
(0.04, Some(0.0)),
(0.01, Some(0.0)),
(0.0, Some(0.0)),
(-1.0, Some(-1.0)),
(-0.99, Some(-1.0)),
(-0.96, Some(-1.0)),
(-0.95, Some(-1.0)),
(-0.9499, Some(-0.9499)),
(-0.84, Some(-0.84)),
(-0.43, Some(-0.43)),
(-0.05001, Some(-0.05001)),
(-0.05, Some(0.0)),
(-0.04, Some(0.0)),
(-0.01, Some(0.0)),
];
for (new_value, expected) in cases {
let settings = AxisSettings::default();
test_axis_settings_filter(settings, new_value, None, expected);
}
}
#[test]
fn test_axis_settings_default_filter_with_old_values() {
let cases = [
(0.43, Some(0.44001), Some(0.43)),
(0.43, Some(0.44), None),
(0.43, Some(0.43), None),
(0.43, Some(0.41999), Some(0.43)),
(0.43, Some(0.17), Some(0.43)),
(0.43, Some(0.84), Some(0.43)),
(0.05, Some(0.055), Some(0.0)),
(0.95, Some(0.945), Some(1.0)),
(-0.43, Some(-0.44001), Some(-0.43)),
(-0.43, Some(-0.44), None),
(-0.43, Some(-0.43), None),
(-0.43, Some(-0.41999), Some(-0.43)),
(-0.43, Some(-0.17), Some(-0.43)),
(-0.43, Some(-0.84), Some(-0.43)),
(-0.05, Some(-0.055), Some(0.0)),
(-0.95, Some(-0.945), Some(-1.0)),
];
for (new_value, old_value, expected) in cases {
let settings = AxisSettings::default();
test_axis_settings_filter(settings, new_value, old_value, expected);
}
}
#[test]
fn test_button_settings_default_is_pressed() {
let cases = [
(1.0, true),
(0.95, true),
(0.9, true),
(0.8, true),
(0.75, true),
(0.7, false),
(0.65, false),
(0.5, false),
(0.0, false),
];
for (value, expected) in cases {
let settings = ButtonSettings::default();
let actual = settings.is_pressed(value);
assert_eq!(
expected, actual,
"testing ButtonSettings::is_pressed() for value: {value}",
);
}
}
#[test]
fn test_button_settings_default_is_released() {
let cases = [
(1.0, false),
(0.95, false),
(0.9, false),
(0.8, false),
(0.75, false),
(0.7, false),
(0.65, true),
(0.5, true),
(0.0, true),
];
for (value, expected) in cases {
let settings = ButtonSettings::default();
let actual = settings.is_released(value);
assert_eq!(
expected, actual,
"testing ButtonSettings::is_released() for value: {value}",
);
}
}
#[test]
fn test_new_button_settings_given_valid_parameters() {
let cases = [
(1.0, 0.0),
(1.0, 1.0),
(1.0, 0.9),
(0.9, 0.9),
(0.9, 0.0),
(0.0, 0.0),
];
for (press_threshold, release_threshold) in cases {
let bs = ButtonSettings::new(press_threshold, release_threshold);
match bs {
Ok(button_settings) => {
assert_eq!(button_settings.press_threshold, press_threshold);
assert_eq!(button_settings.release_threshold, release_threshold);
}
Err(_) => {
panic!(
"ButtonSettings::new({press_threshold}, {release_threshold}) should be valid"
);
}
}
}
}
#[test]
fn test_new_button_settings_given_invalid_parameters() {
let cases = [
(1.1, 0.0),
(1.1, 1.0),
(1.0, 1.1),
(-1.0, 0.9),
(-1.0, 0.0),
(-1.0, -0.4),
(0.9, 1.0),
(0.0, 0.1),
];
for (press_threshold, release_threshold) in cases {
let bs = ButtonSettings::new(press_threshold, release_threshold);
match bs {
Ok(_) => {
panic!(
"ButtonSettings::new({press_threshold}, {release_threshold}) should be invalid"
);
}
Err(err_code) => match err_code {
ButtonSettingsError::PressThresholdOutOfRange(_press_threshold) => {}
ButtonSettingsError::ReleaseThresholdGreaterThanPressThreshold {
press_threshold: _press_threshold,
release_threshold: _release_threshold,
} => {}
ButtonSettingsError::ReleaseThresholdOutOfRange(_release_threshold) => {}
},
}
}
}
#[test]
fn test_try_out_of_range_axis_settings() {
let mut axis_settings = AxisSettings::default();
assert_eq!(
AxisSettings::new(-0.95, -0.05, 0.05, 0.95, 0.001),
Ok(AxisSettings {
livezone_lowerbound: -0.95,
deadzone_lowerbound: -0.05,
deadzone_upperbound: 0.05,
livezone_upperbound: 0.95,
threshold: 0.001,
})
);
assert_eq!(
Err(AxisSettingsError::LiveZoneLowerBoundOutOfRange(-2.0)),
axis_settings.try_set_livezone_lowerbound(-2.0)
);
assert_eq!(
Err(AxisSettingsError::LiveZoneLowerBoundOutOfRange(0.1)),
axis_settings.try_set_livezone_lowerbound(0.1)
);
assert_eq!(
Err(AxisSettingsError::DeadZoneLowerBoundOutOfRange(-2.0)),
axis_settings.try_set_deadzone_lowerbound(-2.0)
);
assert_eq!(
Err(AxisSettingsError::DeadZoneLowerBoundOutOfRange(0.1)),
axis_settings.try_set_deadzone_lowerbound(0.1)
);
assert_eq!(
Err(AxisSettingsError::DeadZoneUpperBoundOutOfRange(-0.1)),
axis_settings.try_set_deadzone_upperbound(-0.1)
);
assert_eq!(
Err(AxisSettingsError::DeadZoneUpperBoundOutOfRange(1.1)),
axis_settings.try_set_deadzone_upperbound(1.1)
);
assert_eq!(
Err(AxisSettingsError::LiveZoneUpperBoundOutOfRange(-0.1)),
axis_settings.try_set_livezone_upperbound(-0.1)
);
assert_eq!(
Err(AxisSettingsError::LiveZoneUpperBoundOutOfRange(1.1)),
axis_settings.try_set_livezone_upperbound(1.1)
);
axis_settings.set_livezone_lowerbound(-0.7);
axis_settings.set_deadzone_lowerbound(-0.3);
assert_eq!(
Err(
AxisSettingsError::LiveZoneLowerBoundGreaterThanDeadZoneLowerBound {
livezone_lowerbound: -0.1,
deadzone_lowerbound: -0.3,
}
),
axis_settings.try_set_livezone_lowerbound(-0.1)
);
assert_eq!(
Err(
AxisSettingsError::LiveZoneLowerBoundGreaterThanDeadZoneLowerBound {
livezone_lowerbound: -0.7,
deadzone_lowerbound: -0.9
}
),
axis_settings.try_set_deadzone_lowerbound(-0.9)
);
axis_settings.set_deadzone_upperbound(0.3);
axis_settings.set_livezone_upperbound(0.7);
assert_eq!(
Err(
AxisSettingsError::DeadZoneUpperBoundGreaterThanLiveZoneUpperBound {
deadzone_upperbound: 0.8,
livezone_upperbound: 0.7
}
),
axis_settings.try_set_deadzone_upperbound(0.8)
);
assert_eq!(
Err(
AxisSettingsError::DeadZoneUpperBoundGreaterThanLiveZoneUpperBound {
deadzone_upperbound: 0.3,
livezone_upperbound: 0.1
}
),
axis_settings.try_set_livezone_upperbound(0.1)
);
}
}