UI

src/simulation.rs

@@ -1,6 +1,16 @@
 use bevy::{prelude::*,math::UVec3};
 use crate::{MAX_VERTICAL_FLOW,MAX_HORIZONTAL_FLOW,grid::{Grid,GridElement}};
 
+pub struct SimulationPlugin;
+
+impl Plugin for SimulationPlugin {
+    fn build(&self, app: &mut App) {
+        app.init_state::<SimulationStatus>()
+            .insert_resource(Time::<Fixed>::from_hz(32.))
+            .add_systems(FixedUpdate, tick.run_if(in_state(SimulationStatus::Continued)));
+    }
+}
+
 enum GridAction{
     MoveLiquid{
         from: UVec3,
@@ -9,6 +19,13 @@ enum GridAction{
     }
 }
 
+#[derive(States,Default,Hash,Eq,PartialEq,Clone,Debug)]
+pub enum SimulationStatus {
+    #[default]
+    Paused,
+    Continued,
+}
+
 pub fn tick(mut grid: ResMut<Grid>) {
     let mut stack: Vec<GridAction> = Vec::new();