From fd05589b2244f37972811c100f2bce9e4455f5a9 Mon Sep 17 00:00:00 2001
From: james7132 <contact@jamessliu.com>
Date: Tue, 4 May 2021 14:01:01 -0700
Subject: [PATCH] feature: Baseline engine setup and input sampling

---
 .github/ISSUE_TEMPLATE/bug-report.md      |   26 +
 .github/ISSUE_TEMPLATE/feature-request.md |   19 +
 .github/PULL_REQUEST_TEMPLATE.md          |   36 +
 .gitignore                                |    1 +
 CODE_OF_CONDUCT.md                        |   76 +
 CONTRIBUTING.md                           |   54 +
 Cargo.lock                                | 1740 +++++++++++++++++++++
 Cargo.toml                                |   19 +
 README.md                                 |   19 +
 src/input.rs                              |  127 ++
 src/main.rs                               |   66 +
 11 files changed, 2183 insertions(+)
 create mode 100644 .github/ISSUE_TEMPLATE/bug-report.md
 create mode 100644 .github/ISSUE_TEMPLATE/feature-request.md
 create mode 100644 .github/PULL_REQUEST_TEMPLATE.md
 create mode 100644 .gitignore
 create mode 100644 CODE_OF_CONDUCT.md
 create mode 100644 CONTRIBUTING.md
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 README.md
 create mode 100644 src/input.rs
 create mode 100644 src/main.rs

diff --git a/.github/ISSUE_TEMPLATE/bug-report.md b/.github/ISSUE_TEMPLATE/bug-report.md
new file mode 100644
index 0000000..6e2d404
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/bug-report.md
@@ -0,0 +1,26 @@
+---
+name: Bug Report
+about: Create a report to help us improve
+title: "[BUG] "
+labels: bug
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Additional context**
+Add any other context about the problem here.
\ No newline at end of file
diff --git a/.github/ISSUE_TEMPLATE/feature-request.md b/.github/ISSUE_TEMPLATE/feature-request.md
new file mode 100644
index 0000000..a862765
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/feature-request.md
@@ -0,0 +1,19 @@
+---
+name: Feature Request
+about: Suggest an idea for this project
+title: "[FEATURE]"
+labels: enhancement
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.
\ No newline at end of file
diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000..9f22f37
--- /dev/null
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,36 @@
+<!-- Please use English language -->
+<!-- Please don't delete this template -->
+
+<!-- PULL REQUEST TEMPLATE -->
+<!-- (Update "[ ]" to "[x]" to check a box) -->
+
+**Summary**
+
+**What kind of change does this PR introduce?** (check at least one)
+
+- [ ] Bugfix
+- [ ] Feature
+- [ ] Code style update
+- [ ] Refactor
+- [ ] Docs
+- [ ] Build-related changes
+- [ ] Other, please describe:
+
+**Does this PR introduce a breaking change?** (check one)
+
+- [ ] Yes
+- [ ] No
+
+If yes, please describe the impact and migration path for existing applications:
+
+**The PR fulfills these requirements:**
+
+- [ ] When resolving a specific issue, it's referenced in the PR's title (e.g. `fix #xxx[,#xxx]`, where "xxx" is the issue number)
+
+If adding a **new feature**, the PR's description includes:
+
+- [ ] A convincing reason for adding this feature
+- [ ] Related documents have been updated
+- [ ] Related tests have been updated
+
+To avoid wasting your time, it's best to open a **feature request issue** first and wait for approval before working on it.
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
new file mode 100644
index 0000000..e08c68f
--- /dev/null
+++ b/CODE_OF_CONDUCT.md
@@ -0,0 +1,76 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to making participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, sex characteristics, gender identity and expression,
+level of experience, education, socio-economic status, nationality, personal
+appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+ advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+ address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+ professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces
+when an individual is representing the project or its community. Examples of
+representing a project or community include using an official project e-mail
+address, posting via an official social media account, or acting as an appointed
+representative at an online or offline event. Representation of a project may be
+further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at contact@jamessliu.com. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see
+https://www.contributor-covenant.org/faq
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..fdc9592
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,54 @@
+# Contribute
+
+## Introduction
+
+First, thank you for considering contributing to Hourai! It's people like you that make the open source community such a great community! 😊
+
+We welcome any type of contribution, not only code. You can help with
+- **QA**: file bug reports, the more details you can give the better (e.g.
+  screenshots of the bot's behavior)
+- **Marketing**: writing howto's, voting for the bot on
+  [top.gg](https://top.gg/), ...
+- **Translation**: Translating documentation, bot messages, etc. to other
+  languages.
+- **Documentaion**: Hourai is a complicated bot, improving documentation and
+  giving feedback on how the docs are written helps everyone understand and use
+  it.
+- **Networking**: Expanding Hourai's footprint on Discord, sharing and adding
+  the bot with others.
+- **Code**: take a look at the [open issues](issues). Even if you can't write
+  code, commenting on them, showing that you care about a given issue matters.
+  It helps us triage them.
+
+## Your First Contribution
+
+Working on your first Pull Request? You can learn how from this *free* series, [How to Contribute to an Open Source Project on GitHub](https://egghead.io/series/how-to-contribute-to-an-open-source-project-on-github).
+
+## Documentation
+
+Hourai is a large, complicated project that may be difficult to fully grasp for
+many contributors.  If you have any questions, please join the [support Discord
+server](https://discord.gg/UydKWHX) or refer to any of the following
+documentation links for more infomation.
+
+ * [Documentation](https://docs.hourai.gg/)
+ * [Development](https://docs.hourai.gg/Development)
+ * [Self-Hosting](https://docs.hourai.gg/Self-Hosting)
+
+## Submitting code
+
+Any code change should be submitted as a pull request. The description should
+explain what the code does and give steps to execute it. The pull request
+should also contain tests.
+
+## Code review process
+
+The bigger the pull request, the longer it will take to review and merge. Try to break down large pull requests in smaller chunks that are easier to review and merge.
+It is also always helpful to have some context for your pull request. What was the purpose? Why does it matter to you?
+
+## Code of Conduct
+
+Please be mindful of the others contributing to the project. Those in violation
+of the [Code of Conduct](./CODE_OF_CONDUCT.md) will be dealt with appropriately.
+
+<!-- This `CONTRIBUTING.md` is based on @nayafia's template https://github.com/nayafia/contributing-template -->
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new file mode 100644
index 0000000..27dc59b
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,1740 @@
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+ "log",
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+ "quote",
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+dependencies = [
+ "bitflags",
+ "cocoa",
+ "core-foundation 0.9.1",
+ "core-graphics 0.22.2",
+ "core-video-sys",
+ "dispatch",
+ "instant",
+ "lazy_static",
+ "libc",
+ "log",
+ "ndk",
+ "ndk-glue",
+ "ndk-sys",
+ "objc",
+ "parking_lot",
+ "raw-window-handle",
+ "wasm-bindgen",
+ "web-sys",
+ "winapi",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..3705713
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,19 @@
+[package]
+name = "fantasy-crescendo-bevy"
+version = "0.1.0"
+authors = ["james7132 <contact@jamessliu.com>"]
+edition = "2018"
+
+[profile.release]
+lto = true
+opt-level = 3
+panic = "abort"
+
+[dependencies]
+bitflags = "1.2"
+
+[dependencies.bevy]
+git = "https://github.com/bevyengine/bevy"
+branch = "main"
+default-features = false
+features = [ "bevy_winit" ]
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..ced27c9
--- /dev/null
+++ b/README.md
@@ -0,0 +1,19 @@
+# Fantasy Crescendo... in Bevy
+
+Because Unity's Entities/DOTS has taken years to deliver on what the Rust
+community is actively engaged in developing and in the interest of entirely open
+source game development, this is an experimental reimplementation of the core
+gameplay items of Fantasy Crescendo.
+
+## Goals
+
+ * Create a stable cross-platform determinmistic simulation for rollback netplay.
+ * Get lower level control over the game's systems.
+ * Deliver a custom cross-platform editor that can more easily create the game's
+   assets.
+
+## Future Direction
+
+This is still an experiment. It's unknown if this implementation is going to
+supplant the Unity implementation, be used as a simulation layer, or whatever
+else.
diff --git a/src/input.rs b/src/input.rs
new file mode 100644
index 0000000..730b48f
--- /dev/null
+++ b/src/input.rs
@@ -0,0 +1,127 @@
+use std::fmt;
+
+bitflags! {
+    #[derive(Default)]
+    pub struct Buttons: u8 {
+        const ATTACK = 1 << 0;
+        const SPECIAL = 1 << 1;
+        const JUMP = 1 << 2;
+        const SHIELD = 1 << 3;
+        const GRAB = 1 << 4;
+    }
+}
+
+impl Buttons {
+    #[inline]
+    pub fn attack(&self) -> bool {
+        self.contains(Self::ATTACK)
+    }
+
+    #[inline]
+    pub fn special(&self) -> bool {
+        self.contains(Self::SPECIAL)
+    }
+
+    #[inline]
+    pub fn jump(&self) -> bool {
+        self.contains(Self::JUMP)
+    }
+
+    #[inline]
+    pub fn shield(&self) -> bool {
+        self.contains(Self::SHIELD)
+    }
+
+    #[inline]
+    pub fn grab(&self) -> bool {
+        self.contains(Self::GRAB)
+    }
+
+    #[inline]
+    pub fn set_attack(&mut self, value: bool) {
+        self.set_value(Self::ATTACK, value);
+    }
+
+    #[inline]
+    pub fn set_special(&mut self, value: bool) {
+        self.set_value(Self::SPECIAL, value);
+    }
+
+    #[inline]
+    pub fn set_jump(&mut self, value: bool) {
+        self.set_value(Self::JUMP, value);
+    }
+
+    #[inline]
+    pub fn set_shield(&mut self, value: bool) {
+        self.set_value(Self::SHIELD, value);
+    }
+
+    #[inline]
+    pub fn set_grab(&mut self, value: bool) {
+        self.set_value(Self::GRAB, value);
+    }
+
+    #[inline]
+    fn set_value(&mut self, flags: Self, value: bool) {
+        if value {
+            self.insert(flags);
+        } else {
+            self.remove(flags);
+        }
+    }
+}
+
+#[derive(Clone, Copy, Default, Eq, PartialEq)]
+pub struct Axis1D(pub i8);
+
+impl From<Axis1D> for f32 {
+    fn from(value: Axis1D) -> Self {
+        Self::from(value.0) / Self::from(i8::MAX)
+    }
+}
+
+impl From<f32> for Axis1D {
+    fn from(value: f32) -> Self {
+        Self((value.clamp(-1.0, 1.0) * 127.0) as i8)
+    }
+}
+
+impl fmt::Debug for Axis1D {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f32::from(*self).fmt(f)
+    }
+}
+
+#[derive(Clone, Copy, Debug, Default, Eq, PartialEq)]
+pub struct Axis2D {
+    pub x: Axis1D,
+    pub y: Axis1D,
+}
+
+#[derive(Clone, Copy, Debug, Default, Eq, PartialEq)]
+pub struct PlayerInputFrame {
+    pub movement: Axis2D,
+    pub smash: Axis2D,
+    pub buttons: Buttons,
+}
+
+#[derive(Clone, Copy, Debug, Default, Eq, PartialEq)]
+pub struct PlayerInput {
+    pub previous: PlayerInputFrame,
+    pub current: PlayerInputFrame,
+}
+
+impl PlayerInput {
+    pub fn tick(&mut self) {
+        self.previous = self.current;
+    }
+
+    pub fn was_pressed(&self) -> Buttons {
+        self.previous.buttons & !self.current.buttons
+    }
+
+    pub fn was_released(&self) -> Buttons {
+        !self.previous.buttons & self.current.buttons
+    }
+}
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..44852ac
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,66 @@
+#[macro_use]
+extern crate bitflags;
+
+mod input;
+
+use bevy::prelude::*;
+
+struct Player;
+
+fn create_players(mut commands: Commands) {
+    commands.spawn()
+        .insert(Player)
+        .insert(input::PlayerInput::default());
+}
+
+trait InputSource {
+    fn update_input(&self, frame: &mut input::PlayerInputFrame);
+}
+
+impl<'w> InputSource for Res<'w, Input<KeyCode>> {
+    fn update_input(&self, frame: &mut input::PlayerInputFrame) {
+        fn keyboard_axis(keyboard: &Res<Input<KeyCode>>, pos: KeyCode, neg: KeyCode) -> input::Axis1D {
+            input::Axis1D(match (keyboard.pressed(pos), keyboard.pressed(neg)) {
+                (true, true) => 0_i8,
+                (true, false) => i8::MAX,
+                (false, true) => i8::MIN,
+                (false, false) => 0_i8,
+            })
+        }
+
+        let buttons = &mut frame.buttons;
+        buttons.set_attack(self.pressed(KeyCode::F));
+        buttons.set_special(self.pressed(KeyCode::D));
+        buttons.set_shield(self.pressed(KeyCode::S) || self.pressed(KeyCode::A));
+        buttons.set_jump(
+            self.pressed(KeyCode::Q) ||
+            self.pressed(KeyCode::W) ||
+            self.pressed(KeyCode::I)
+        );
+
+        frame.movement = input::Axis2D {
+            x: keyboard_axis(self, KeyCode::H, KeyCode::L),
+            y: keyboard_axis(self, KeyCode::I, KeyCode::K),
+        };
+    }
+}
+
+fn sample_input(
+    input: Res<Input<KeyCode>>,
+    mut query: Query<&mut input::PlayerInput, With<Player>>) {
+    for mut player_input in query.iter_mut() {
+        player_input.tick();
+        input.update_input(&mut player_input.current);
+        if player_input.previous != player_input.current {
+            println!("{:?}", player_input);
+        }
+    }
+}
+
+fn main() {
+    App::build()
+        .add_plugins(DefaultPlugins)
+        .add_startup_system(create_players.system())
+        .add_system(sample_input.system())
+        .run();
+}
\ No newline at end of file