chore: initialize project workspace and movement plugin

1 files changed, 52 insertions, 0 deletions

diff --git a/plugins/movement/src/lib.rs b/plugins/movement/src/lib.rs
new file mode 100644
index 0000000..f7f6ba5
--- /dev/null
+++ b/plugins/movement/src/lib.rs
@@ -0,0 +1,52 @@
+//! CH Modules - Movement
+//!
+//! CH Movement provides a set of systems for driving Entity movement.
+//!
+//! # Included
+//!
+//! - **Velocity**: Represents the entity's current momentum, used by systems to calculate the next frame's position
+//! - **Position**: Represents the entity's current location
+//! - **Movement**: A pure marker, used to flag this entity as movable
+//! - **VelocityReducer**: Controls how Velocity is reduced
+
+#![deny(missing_docs)]
+
+use bevy::{
+    app::{FixedUpdate, Plugin},
+    ecs::{query::With, system::Query},
+};
+use ch_macro_rules::import;
+
+// Basic data
+import!(position, velocity, movement);
+
+// Modifiers
+import!(reducer);
+
+/// Cigarette Hacker movement plugin
+///
+/// Used to describe the movement of characters in the game
+pub struct CHMovementPlugins;
+
+impl Plugin for CHMovementPlugins {
+    fn build(&self, app: &mut bevy::app::App) {
+        app.add_systems(FixedUpdate, update_movement);
+    }
+}
+
+fn update_movement(
+    query: Query<(&mut Position, &mut Velocity, Option<&VelocityReducer>), With<Movement>>,
+) {
+    for (mut pos, mut velo, reducer) in query {
+        // Add Velocity to Position
+        pos.x += velo.x;
+        pos.y += velo.y;
+        pos.z += velo.z;
+
+        // Apply velocity reduction (default to Lerp(0.25) if no reducer present)
+        match reducer {
+            Some(reducer) => reducer.calculate(&mut velo),
+            None => VelocityReducer::Lerp(0.25).calculate(&mut velo),
+        }
+    }
+}