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//! A meta tool for selecting parts of a map and removing them in a single operation.
//!
//! The user can draw a rectangle, which currently must have it's side parallel to the x and y-axes
//! of the world. With the first node placement, the mode is started, while the second placement would
//! finish the process and delete all elements that are *completely* contained in the rectangle
//! (partially contained items are not deleted) or abort it, in which case the selection is removed
//! and nothing is deleted.
use super::Tool;
use crate::colours::DEFAULT_COLOURS;
use crate::map::Map;
use crate::math::{Rect, Surface, Vec2};
use crate::transform::Transform;
use raylib::core::drawing::{RaylibDraw, RaylibDrawHandle};
/// The deletion tool itself.
pub struct DeletionTool {
deletion_rect: Option<(Vec2<f64>, Vec2<f64>)>,
}
impl DeletionTool {
/// Create a new deletion tool, there should only be one deletion tool and it should be created
/// by the editor.
pub fn new() -> Self {
Self {
deletion_rect: None,
}
}
}
fn delete_rect((pos1, pos2): (&Vec2<f64>, &Vec2<f64>), map: &mut Map) {
let bounds = Rect::bounding_rect(*pos1, *pos2);
map.retain(|e| !bounds.contains_rect(&e.bounding_rect()));
}
impl Tool for DeletionTool {
fn deactivate(&mut self) {
self.deletion_rect = None;
}
fn update(&mut self, _map: &Map, mouse_pos_m: &Vec2<f64>) {
if let Some((_, ref mut pos2)) = &mut self.deletion_rect {
*pos2 = *mouse_pos_m;
}
}
fn draw(&self, rld: &mut RaylibDrawHandle, transform: &Transform) {
if let Some((pos1, pos2)) = self.deletion_rect {
let rect_px = transform.rect_m_to_px(&Rect::bounding_rect(pos1, pos2));
rld.draw_rectangle_rec(rect_px, DEFAULT_COLOURS.deletion_rect);
rld.draw_rectangle_lines_ex(rect_px, 4, DEFAULT_COLOURS.deletion_rect_outline);
}
}
fn place_single(&mut self, map: &mut Map, mouse_pos_m: &Vec2<f64>) {
if let Some((pos1, pos2)) = self.deletion_rect {
delete_rect((&pos1, &pos2), map);
self.deletion_rect = None;
} else {
self.deletion_rect = Some((*mouse_pos_m, *mouse_pos_m));
}
}
fn finish(&mut self, map: &mut Map) {
if let Some((pos1, pos2)) = self.deletion_rect {
delete_rect((&pos1, &pos2), map);
self.deletion_rect = None;
}
}
fn abort(&mut self) {
self.deletion_rect = None;
}
}
|
