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https://github.com/bevyengine/bevy
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# Objective - Add the `AccumulatedMouseMotion` and `AccumulatedMouseScroll` resources to make it simpler to track mouse motion/scroll changes - Closes #13915 ## Solution - Created two resources, `AccumulatedMouseMotion` and `AccumulatedMouseScroll`, and a method that tracks the `MouseMotion` and `MouseWheel` events and accumulates their deltas every frame. - Also modified the mouse input example to show how to use the resources. ## Testing - Tested the changes by modifying an existing example to use the newly added resources, and moving/scrolling my trackpad around a ton. --------- Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com> Co-authored-by: Gino Valente <49806985+MrGVSV@users.noreply.github.com>
43 lines
1.3 KiB
Rust
43 lines
1.3 KiB
Rust
//! Prints mouse button events.
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use bevy::{
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input::mouse::{AccumulatedMouseMotion, AccumulatedMouseScroll},
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prelude::*,
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};
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fn main() {
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App::new()
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.add_plugins(DefaultPlugins)
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.add_systems(Update, (mouse_click_system, mouse_move_system))
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.run();
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}
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// This system prints messages when you press or release the left mouse button:
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fn mouse_click_system(mouse_button_input: Res<ButtonInput<MouseButton>>) {
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if mouse_button_input.pressed(MouseButton::Left) {
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info!("left mouse currently pressed");
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}
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if mouse_button_input.just_pressed(MouseButton::Left) {
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info!("left mouse just pressed");
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}
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if mouse_button_input.just_released(MouseButton::Left) {
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info!("left mouse just released");
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}
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}
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// This system prints messages when you finish dragging or scrolling with your mouse
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fn mouse_move_system(
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accumulated_mouse_motion: Res<AccumulatedMouseMotion>,
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accumulated_mouse_scroll: Res<AccumulatedMouseScroll>,
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) {
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if accumulated_mouse_motion.delta != Vec2::ZERO {
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let delta = accumulated_mouse_motion.delta;
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info!("mouse moved ({}, {})", delta.x, delta.y);
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}
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if accumulated_mouse_scroll.delta != Vec2::ZERO {
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let delta = accumulated_mouse_scroll.delta;
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info!("mouse scrolled ({}, {})", delta.x, delta.y);
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}
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}
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