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3d camera movement depending on view direction

Zwazel answered on November 11, 2022 Popularity 5/10 Helpfulness 7/10

answer 3d camera movement depending on view direction

3d camera movement depending on view direction

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// very useful video: https://www.youtube.com/watch?v=7kGCrq1cJew
// In Bevy:
pub fn move_camera(
    mut q_camera: Query<&mut Transform>,
    keyboard_input: Res<Input<KeyCode>>,
    time: Res<Time>,
) {
    let mut camera_transform = q_camera.single_mut();
    let mut direction = Vec3::new(
      (keyboard_input.pressed(KeyCode::D) as i32 - keyboard_input.pressed(KeyCode::A) as i32) as f32,
      0.0,
      (keyboard_input.pressed(KeyCode::W) as i32 - keyboard_input.pressed(KeyCode::S) as i32) as f32,
    );

    let mut forward = camera_transform.forward();
    let mut right = camera_transform.right();

    forward.y = 0.0;
    right.y = 0.0;
    forward = forward.normalize();
    right = right.normalize();

    let forward_relative_vertical_input = direction.z * forward;
    let right_relative_horizontal_input = direction.x * right;

    let mut camera_movement_direction = forward_relative_vertical_input + right_relative_horizontal_input;

    if camera_movement_direction.length() != 0.0 {
        camera_movement_direction = camera_movement_direction.normalize();
    };
    
    camera_transform.translation += camera_movement_direction * time.delta_seconds();
}

Popularity 5/10 Helpfulness 7/10 Language rust

Source: www.youtube.com

Tags: 3d bevy camera direction forward move rotation rust script view

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Contributed on Nov 11 2022

Zwazel

0 Answers Avg Quality 2/10

3d camera movement depending on view direction

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