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| -rw-r--r-- | .github/workflows/rust.yml | 24 | ||||
| -rw-r--r-- | .gitignore | 1 | ||||
| -rw-r--r-- | Cargo.toml | 9 | ||||
| -rw-r--r-- | LICENSE-0BSD | 5 | ||||
| -rw-r--r-- | LICENSE-APACHE | 201 | ||||
| -rw-r--r-- | LICENSE-MIT | 21 | ||||
| -rw-r--r-- | README.md | 64 | ||||
| -rw-r--r-- | src/components.rs | 46 | ||||
| -rw-r--r-- | src/events.rs | 19 | ||||
| -rw-r--r-- | src/lib.rs | 110 |
10 files changed, 500 insertions, 0 deletions
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml new file mode 100644 index 0000000..e38739d --- /dev/null +++ b/.github/workflows/rust.yml @@ -0,0 +1,24 @@ +name: Rust + +on: + push: + branches: [ "master" ] + pull_request: + branches: [ "master" ] + +env: + CARGO_TERM_COLOR: always + +jobs: + build: + + runs-on: ubuntu-latest + + steps: + - uses: actions/checkout@v4 + - name: Install Dependencies + run: sudo apt-get update; sudo apt-get install --no-install-recommends libasound2-dev libudev-dev + - name: Build + run: cargo build --verbose + - name: Run tests + run: cargo test --verbose diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..ea8c4bf --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +/target diff --git a/Cargo.toml b/Cargo.toml new file mode 100644 index 0000000..34d74f6 --- /dev/null +++ b/Cargo.toml @@ -0,0 +1,9 @@ +[package] +name = "bevy_basic_interaction" +version = "0.1.0" +edition = "2021" + +[dependencies.bevy] +version = "0.14" +default-features = false + diff --git a/LICENSE-0BSD b/LICENSE-0BSD new file mode 100644 index 0000000..7a39b21 --- /dev/null +++ b/LICENSE-0BSD @@ -0,0 +1,5 @@ +Copyright (C) 2024 by Silas Bartha [email protected] + +Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted. + +THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright 2024 Silas Bartha + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/LICENSE-MIT b/LICENSE-MIT new file mode 100644 index 0000000..dcc255f --- /dev/null +++ b/LICENSE-MIT @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2024 Silas Bartha + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/README.md b/README.md new file mode 100644 index 0000000..7c3de07 --- /dev/null +++ b/README.md @@ -0,0 +1,64 @@ +# bevy_basic_interaction + + + + + +This crate provides an `InteractionPlugin` which enables a basic interaction system. + +This plugin is mostly for my own internal use, but feel free to use it or contribute if you feel like it. + +## Compatibility + +| Crate Version | Bevy Version | +|--- |--- | +| 0.1 | 0.14 | + +## Installation + +If enough people (like literally 1 person) want this on crates.io I'll consider putting it up there, but for now just add the GitHub URL to your `Cargo.toml`: + +```toml +[dependencies.bevy_basic_interaction] +git = "https://github.com/exvacuum/bevy_basic_interaction" +``` + +## Usage + +This plugin works based on a system of `Interactor`s and `Interactable`s. `Interactor`s maintain a list of "target" `Interactable`s which are in range of the interactor (based on a maximum distance defined in the *interactable*). The user can invoke an `InteractorFiredEvent`, passing the `Entity` with an `Interactor` component on it, and the plugin will automatically determine which interactables to invoke a corresponding `InteractionEvent` for. + +In main function: +```rs +use bevy::prelude::*; +use bevy_basic_interaction::InteractionPlugin; + +fn main() { + App::new() + // ... + .add_plugins(InteractionPlugin) + // ... + .run(); +} +``` + +Raising an interactor event (`entity` must be an entity with both an `Interactor` and a `GlobalTransform` component): +```rs +// ... +event_writer.send(InteractorFiredEvent(entity)); +// ... +``` + +Handling an interaction event: +```rs +// ... +for InteractionEvent { interactable, .. } in event_reader.read() { + let interactable = interactable_query.get(interactable).unwrap(); + // Do something with interactable here... +} +// ... +``` + +## License + +This crate is licensed under your choice of 0BSD, Apache-2.0, or MIT license. + diff --git a/src/components.rs b/src/components.rs new file mode 100644 index 0000000..1be2f2c --- /dev/null +++ b/src/components.rs @@ -0,0 +1,46 @@ +//! 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) + } +} + diff --git a/src/events.rs b/src/events.rs new file mode 100644 index 0000000..43ca1ba --- /dev/null +++ b/src/events.rs @@ -0,0 +1,19 @@ +//! Events which enable interactions between `Interactor` and `Interactable` entities. + +use bevy::prelude::*; + +/// Event sent by user to request an interaction from the given `Interactor` entity. +#[derive(Event)] +pub struct InteractorFiredEvent(pub Entity); + +/// Event sent by the plugin once an `InteractorFiredEvent` has been processed. It should be caught +/// by the user to perform some action on the affected interactable entity. +/// +/// It is not intended to be invoked directly. +#[derive(Event)] +pub struct InteractionEvent { + /// `Interactor` entity which triggered this interaction. + pub interactor: Entity, + /// `Interactable` entity whicg is receiving this interaction. + pub interactable: Entity, +} diff --git a/src/lib.rs b/src/lib.rs new file mode 100644 index 0000000..2e3fc60 --- /dev/null +++ b/src/lib.rs @@ -0,0 +1,110 @@ +#![warn(missing_docs)] + +//! This library provides basic "interaction" functionality +//! Entities which can trigger interactions get the `Interactor` component, and entities which can +//! Be interacted with get the `Interactable` component. An `InteractorFiredEvent` can be invoked for +//! a given `Interactor`, which does the following: +//! 1. Checks to make sure there is at least 1 `Interactable` in range +//! 2. If the nearest `Interactable` is "exclusive", an `InteractionEvent` is invoked for only that +//! entity +//! 3. If the nearest `Interactable` is *not* "exclusive", an individual `InteractionEvent` is invoked for +//! that entity and each "non-exclusive" `Interactable` entity within range + +use std::f32::consts::PI; + +use bevy::prelude::*; +use components::{Interactable, Interactor}; +use events::{InteractionEvent, InteractorFiredEvent}; + +pub mod components; +pub mod events; + +/// Plugin which enables interaction functionality. +/// Sets up event handling for `InteractorFiredEvent` to automatically trigger the correct +/// `InteractionEvent`s +pub struct InteractionPlugin; + +impl Plugin for InteractionPlugin { + fn build(&self, app: &mut App) { + app.add_systems(Update, (handle_interactor_events, update_interactor_targets)) + .add_event::<InteractorFiredEvent>() + .add_event::<InteractionEvent>(); + } +} + +fn handle_interactor_events( + mut interactor_events: EventReader<InteractorFiredEvent>, + interactable_query: Query<&Interactable>, + interactor_query: Query<&Interactor>, + mut event_writer: EventWriter<InteractionEvent>, +) { + for InteractorFiredEvent(interactor_entity) in interactor_events.read() { + let interactor = interactor_query.get(*interactor_entity).unwrap(); + + if let Some(interactable_entity) = interactor.closest { + let interactable = interactable_query.get(interactable_entity).unwrap(); + if interactable.exclusive { + event_writer.send(InteractionEvent { + interactor: *interactor_entity, + interactable: interactable_entity, + }); + continue; + } else { + for interactable_entity in &interactor.targets { + let interactable = interactable_query.get(*interactable_entity).unwrap(); + if !interactable.exclusive { + event_writer.send(InteractionEvent { + interactor: *interactor_entity, + interactable: *interactable_entity, + }); + } + } + } + } + } +} + +fn update_interactor_targets( + mut interactable_query: Query<(Entity, &Interactable)>, + mut interactor_query: Query<(Entity, &mut Interactor)>, + transform_query: Query<&GlobalTransform>, +) { + for (interactor_entity, mut interactor) in interactor_query.iter_mut() { + let interactor_transform = transform_query.get(interactor_entity).unwrap(); + + let mut closest_active_interactable: Option<(f32, Entity)> = None; + for (interactable_entity, interactable) in interactable_query.iter_mut() { + let interactable_transform = transform_query.get(interactable_entity).unwrap(); + let interactable_distance_squared = interactable_transform + .translation() + .distance_squared(interactor_transform.translation()); + let interactable_arccosine = f32::acos( + interactor_transform.forward().dot( + (interactable_transform.translation() - interactor_transform.translation()) + .normalize(), + ), + ); + if interactable_distance_squared < interactable.max_distance_squared + && interactable_arccosine < PI / 8.0 + { + interactor.targets.insert(interactable_entity); + if let Some((arccosine, _)) = closest_active_interactable { + if interactable_arccosine < arccosine { + closest_active_interactable = + Some((interactable_arccosine, interactable_entity)); + } + } else { + closest_active_interactable = + Some((interactable_arccosine, interactable_entity)); + } + } else { + interactor.targets.remove(&interactable_entity); + } + } + interactor.closest = if let Some((_, interactable_entity)) = closest_active_interactable { + Some(interactable_entity) + } else { + None + } + } +} |