66 lines
1.9 KiB
Rust
66 lines
1.9 KiB
Rust
use bevy::{
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input::{mouse::MouseWheel, ButtonInput},
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prelude::*,
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render::camera::Camera,
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window::PrimaryWindow,
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};
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use crate::TileOffset;
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pub fn mouse_zoom(
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mut evr_scroll: EventReader<MouseWheel>,
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mut query: Query<&mut OrthographicProjection, With<Camera>>,
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) {
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use bevy::input::mouse::MouseScrollUnit;
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for ev in evr_scroll.read() {
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match ev.unit {
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MouseScrollUnit::Line => {
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let scroll = ev.y / 10.0;
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for mut ortho in query.iter_mut() {
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ortho.scale -= scroll;
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ortho.scale = ortho.scale.clamp(0.5, 1.0);
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dbg!(ortho.scale);
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}
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}
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MouseScrollUnit::Pixel => {}
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}
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}
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}
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pub fn mouse_movement(
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primary_window: Query<&Window, With<PrimaryWindow>>,
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mouse_buttons: Res<ButtonInput<MouseButton>>,
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mut query: Query<(&mut Transform, &mut TileOffset, &OrthographicProjection), With<Camera>>,
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mut last_pos: Local<Option<Vec2>>,
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) {
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if !mouse_buttons.pressed(MouseButton::Middle) {
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*last_pos = None;
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return;
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}
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let Ok(window) = primary_window.get_single() else {
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return;
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};
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for (mut transform, mut offset, ortho) in query.iter_mut() {
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let current_pos = match window.cursor_position() {
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Some(c) => Vec2::new(c.x, -c.y),
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None => return,
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};
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let delta_device_pixels = current_pos - last_pos.unwrap_or(current_pos);
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*last_pos = Some(current_pos);
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let z = transform.translation.z;
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offset.translation.x -= delta_device_pixels.x * ortho.scale;
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offset.translation.y -= delta_device_pixels.y * ortho.scale;
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offset.x = (offset.translation.x / 16.0) as isize;
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offset.y = (offset.translation.y / 16.0) as isize;
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transform.translation = offset.translation % 16.0;
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transform.translation.z = z;
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}
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}
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