added incomplete delete

WASM

src/main.rs

@@ -166,6 +166,7 @@ async fn main() {
 
             ui_signals.iter().for_each(|signal| match signal {
                 UiSignal::AddNode(ty) => world.insert(resources::UIState::AddingNode(*ty)),
+                UiSignal::Delete => world.insert(resources::UIState::Deleting),
             });
             world.insert(resources::UiSignals(Vec::new()));
         }

src/resources.rs

@@ -18,6 +18,7 @@ pub enum UIState {
         x_pos: Option<f32>,
         y_pos: Option<f32>,
     },
+    Deleting,
     Nothing,
 }
 
@@ -30,6 +31,7 @@ impl Default for UIState {
 #[derive(Clone)]
 pub enum UiSignal {
     AddNode(NodeTy),
+    Delete,
 }
 
 #[derive(Default)]

src/systems/ui_systems.rs

@@ -32,6 +32,9 @@ impl<'a> System<'a> for CurrentModeSys {
                 current_mode.0 =
                     "Right click a node to set wire output or left click to cancel".to_string();
             }
+            UIState::Deleting => {
+                current_mode.0 = "Click a node or wire focus to delete it".to_string();
+            }
             _ => {
                 *current_mode = CurrentModeText::default();
             }

src/ui/mouse_click.rs

@@ -45,6 +45,26 @@ pub fn handle_mouse_click(world: &mut World) {
 
             world.insert(UIState::Nothing);
         }
+        UIState::Deleting => {
+            let positions = world.read_storage::<Pos>();
+            let entities = world.entities();
+            let mouse_pos = {
+                let (mx, my) = mouse_position();
+                Vec2::new(mx, my)
+            };
+
+            let target = (&positions, &entities)
+                .join()
+                .find(|(pos, _)| (pos.pos - mouse_pos).length() < 35.0);
+
+            if let Some((_, entity)) = target {
+                entities.delete(entity).unwrap();
+                std::mem::drop(positions);
+                std::mem::drop(entities);
+                world.maintain();
+                crate::systems::cleanup_sys::run_cleanup_sys(world);
+            }
+        }
         UIState::Nothing => {}
     }
 }

src/ui/top_panel.rs

@@ -1,5 +1,5 @@
-use crate::resources::CurrentModeText;
 use crate::resources::{self, GridMode};
+use crate::resources::{CurrentModeText, UiSignals};
 use crate::ResetSys;
 use crate::{components::nodes, UiSignal};
 use egui::menu;
@@ -49,6 +49,10 @@ pub fn render_top_panel(ui: &mut egui::Ui, world: &mut World) {
             });
             world.insert(grid_mode);
 
+            if ui.button("Delete").clicked() {
+                world.fetch_mut::<UiSignals>().0.push(UiSignal::Delete);
+            }
+
             if ui.button("Remove All").clicked() {
                 world.delete_all();
             }