Bevy Third Person Camera

• Aim
• Zoom in/out
• Orbit
• Custom Offset
• Cursor Lock
• Custom Sensitivity
• Full Gamepad Support!

Getting Started

Add the bevy_third_person_camera crate:

cargo add bevy_third_person_camera

Import the bevy_third_person_camera crate:

use bevy_third_person_camera::*;

Add the ThirdPersonPlugin:

.add_plugins(ThirdPersonCameraPlugin)

Add the ThirdPersonCamera component to the camera entity:

commands.spawn((
    ThirdPersonCamera::default(),
    Camera3dBundle::default()
));

Add the ThirdPersonCameraTarget component to your player:

// Player
commands.spawn((
    PbrBundle {
        mesh: meshes.add(Mesh::from(shape::Cube::new(1.0))),
        material: materials.add(Color::BLUE.into()),
        transform: Transform::from_xyz(0.0, 0.5, 0.0),
        ..default()
    },
    ThirdPersonCameraTarget,
    Player,
));

That's it!

Examples

• default
• custom
• physics

cargo run --example <example name>

Features

Offset

The offset will 'offset' the x and y values of the camera respectively. Offset is disabled by default. Turn on with offset_enabled: true

offset_enabled: true,
offset: Offset::new(0.5, 0.25),
offset_toggle_key: Some(KeyCode::T),
offset_toggle_speed: 5.0 // default

Aim

Aiming is calculated using the aim_zoom & the zoom.min values. Please note that the actual zoom level will vary if you change the zoom.min value, even if the aim_zoom value stays the same. Aiming is disabled by default. Turn on with aim_enabled: true

aim_enabled: true, // default
aim_speed: 3.0, // default
aim_zoom: 0.7, // default
aim_button: Some(MouseButton::Right), // default
zoom: Zoom::new(1.5, 3.0)

Cursor Lock

The cursor lock feature allows the mouse cursor to toggle between a locked, hidden state, to an unlocked, visible state. When unlocked, the orbiting feature is disabled, thus allowing the cursor to move freely within the window without disrupting the camera's transform. This feature can be fully disabled by setting the enable_cursor_lock_toggle value to false and will keep the cursor locked and hidden.

cursor_lock_toggle_enabled: true,
cursor_lock_active: true,
cursor_lock_key: KeyCode::Space,

Orbit

Orbiting is enabled by default. However, you can set the mouse_orbit_button_enabled setting to true and the orbiting will only be active while the mouse_orbit_button is pressed.

Custom Settings

Most settings can be overridden:

let gamepad = Gamepad::new(0);
commands.spawn((
    // These are the default settings
    ThirdPersonCamera {
        aim_enabled: false,
        aim_button: Some(MouseButton::Right),
        aim_speed: 3.0,
        aim_zoom: 0.7,
        cursor_lock_toggle_enabled: true,
        cursor_lock_active: true,sa
        cursor_lock_key: KeyCode::Space,
        sensitivity: Vec2::new(1.0, 1.0),
        mouse_orbit_button_enabled: false,
        mouse_orbit_button: MouseButton::Middle,
        offset_enabled: false,
        offset: Offset::new(0.5, 0.4),
        offset_toggle_speed: 5.0,
        offset_toggle_key: Some(KeyCode::T), // default is None
        zoom: Zoom::new(1.5, 3.0),
        zoom_sensitivity: 1.0,
        gamepad_settings: CameraGamepadSettings {
            aim_button: Some(GamepadButton::new(gamepad, GamepadButtonType::LeftTrigger2)),
            mouse_orbit_button: GamepadButton::new(gamepad, GamepadButtonType::LeftTrigger),
            sensitivity: Vec2::new(7.0, 4.0),
            offset_toggle_button: Some(GamepadButton::new(gamepad, GamepadButtonType::DPadRight)), // default is None
            zoom_in_button: GamepadButton::new(gamepad, GamepadButtonType::DPadUp),
            zoom_out_button: GamepadButton::new(gamepad, GamepadButtonType::DPadDown),
        },
        ..default()
    },
    Camera3dBundle::default(),
));

Physics Support

When using third party physics engines such as bevy rapier 3d or avian 3d, you should force the 'sync_player_camera' system to run after the physics systems. Failing to do this will cause a jittering effect to occur when applying forces/impulses to an object that has a camera entity attached. Simply add the following to your App::new() method (also see examples/physics.rs for complete example):

.configure_sets(PostUpdate, CameraSyncSet.after(PhysicsSet::StepSimulation)) // Bevy Rapier 3d
.configure_sets(PostUpdate, CameraSyncSet.after(PhysicsSet::Sync)) // Avian 3d

Default Controls

Action	Mouse/Keyboard	Gamepad	Enabled by Default
Zoom In	Scroll Up	D Pad Up	Yes
Zoom Out	Scroll Down	D Pad Down	Yes
Aim	Right Mouse Button	Left Trigger	No
Toggle Offset	E	D Pad Right	No
Cursor Lock/Unlock	Space	n/a	Yes
Orbit Button	Middle Mouse Button	Left Bumper	No

Bevy Version Compatibility

bevy	bevy_third_person_camera
0.14	0.1.11 - 0.1.13
0.13	0.1.9 - 0.1.10
0.12	0.1.7 - 0.1.8
0.11	0.1.1 - 0.1.6

Refer to the Changelog to view breaking changes and updates.

Migration Guides

• v0.1.10 -> v0.1.11
• v0.1.9 -> v0.1.10

License

• MIT License (LICENSE-MIT or http://opensource.org/licenses/MIT)
• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)