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//! Selection of items on the map.
//!
//! When selecting items on the map, the editor goes into a different mode than when editing a
//! specific kind of item. Actions that are available for specific types of items become
//! unavailable, while other actions that make use of the properties to a wide range of items
//! become available instead.
//! For this reason, the selection tool can be thought of as a kind of meta tool over tools.
use super::Tool;
use crate::client::colours::DEFAULT_COLOURS;
use crate::client::map::Map;
use crate::client::transform::Transform;
use crate::math::{ExactSurface, Rect, Vec2};
use crate::net::{Cargo, Connection};
use raylib::core::drawing::{RaylibDraw, RaylibDrawHandle};
/// The selection tool makes it possible to select any item on the map when activated.
pub struct SelectionTool {
selection_rect: Option<(Vec2<f64>, Vec2<f64>)>,
}
impl SelectionTool {
/// Create a new selection tool. There should be only one such tool per program instance and it
/// should be created in the editor.
#[allow(clippy::new_without_default)]
pub fn new() -> Self {
Self {
selection_rect: None,
}
}
}
impl Tool for SelectionTool {
fn deactivate(&mut self) {
self.selection_rect = None;
}
fn update(&mut self, _map: &Map, mouse_pos_m: &Vec2<f64>) {
if let Some((_, ref mut pos2)) = &mut self.selection_rect {
*pos2 = *mouse_pos_m;
}
}
fn draw(&self, rld: &mut RaylibDrawHandle, transform: &Transform) {
if let Some((pos1, pos2)) = self.selection_rect {
let rect_px = transform.rect_m_to_px(&Rect::bounding_rect(pos1, pos2));
rld.draw_rectangle_rec(rect_px, DEFAULT_COLOURS.selection_rect);
rld.draw_rectangle_lines_ex(rect_px, 4, DEFAULT_COLOURS.selection_rect_outline);
}
}
fn place_single(
&mut self,
map: &mut Map,
_server: &Connection<Cargo>,
mouse_pos_m: &Vec2<f64>,
) {
if let Some((pos1, pos2)) = self.selection_rect {
// Select all items on the map that are inside of the selection rectangle
let bounds = Rect::bounding_rect(pos1, pos2);
for (_id, element) in map.elements_mut() {
// TODO: Make it possible to do this additively by custom keybinding.
element.set_selected(bounds.contains_rect(&element.as_component().bounding_rect()));
}
self.selection_rect = None;
} else {
self.selection_rect = Some((*mouse_pos_m, *mouse_pos_m));
}
}
fn abort(&mut self) {
self.selection_rect = None;
}
}
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