Initial Commit

1 files changed, 46 insertions, 0 deletions

diff --git a/src/components.rs b/src/components.rs
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+++ b/src/components.rs
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+//! Components used for interactions
+
+use bevy::{prelude::*, utils::HashSet};
+
+/// Component which enables an entity to request interactions.
+///
+/// An entity with an `Interactor` component can be passed to an `InteractorFiredEvent` in order to
+/// start an interaction with any nearby `Interactable` entities.
+#[derive(Component, Default)]
+pub struct Interactor {
+    /// All `Interactable` targets in-range of this interactor.
+    pub targets: HashSet<Entity>,
+    /// The closest `Interactable` target to this interactor, if any.
+    pub closest: Option<Entity>,
+}
+
+/// Component which enables an entity to recieve interactions.
+///
+/// An entity with an `Interactable` component might get passed to an `InteractionEvent` when an
+/// `Interactor` requests an interaction, if the interactable is in range.
+#[derive(Component)]
+pub struct Interactable {
+    pub(crate) exclusive: bool,
+    pub(crate) max_distance_squared: f32,
+}
+
+impl Interactable {
+    /// Construct a new instance of this component.
+    ///
+    /// If exclusive, this interactable will only be interacted with if it's the closest one to the
+    /// interactor, and the interaction will *not* be processed for any other in-range
+    /// interactables.
+    pub fn new(max_distance: f32, exclusive: bool) -> Self {
+        Self {
+            exclusive,
+            max_distance_squared: max_distance * max_distance,
+        }
+    }
+}
+
+impl Default for Interactable {
+    fn default() -> Self {
+        Self::new(1.0, false)
+    }
+}
+