1 files changed, 20 insertions, 1 deletions
diff --git a/src/sim/sim_manager/mod.rs b/src/sim/sim_manager/mod.rs
index 89ae528..8fab9cf 100644
--- a/src/sim/sim_manager/mod.rs
+++ b/src/sim/sim_manager/mod.rs
@@ -5,9 +5,10 @@ use fxhash::FxHashMap;
 use crate::{
     Config, InputManager,
     config::{PHYSICS_DELTA_TIME, PHYSICS_FPS, SIM_FPS},
+    input::Input,
     sim::{
         cell_manager::manager::CellManager,
-        entity::{Entity, EntityDef, EntityId, EntityUpdateResult},
+        entity::{Entity, EntityDef, EntityId},
         particle_manager::ParticleManager,
         rb_manager::RbManager,
         sim_manager::utils::{
@@ -163,6 +164,24 @@ impl SimManager {
     }
 
     pub fn update(&mut self, config: &Config, input_manager: &InputManager, delta_time: f32) {
+        // handle sim controls
+        if input_manager.pressed(Input::Pause) {
+            self.paused = !self.paused;
+        }
+        if input_manager.pressed(Input::Step) {
+            self.ignore_pause_next_tick = true;
+        }
+        if input_manager.pressed(Input::ClearGrid) {
+            self.cell_manager = CellManager::from_default_size();
+        }
+        if input_manager.pressed(Input::ClearEntities) {
+            let entities: Vec<EntityId> = self.entities.drain().map(|(id, _)| id).collect();
+            entities.iter().for_each(|&id| self.destroy_entity(id));
+        }
+        if input_manager.pressed(Input::ClearParticles) {
+            self.particle_manager.particles = Vec::new();
+        }
+
         let now = Instant::now();
         let secs_since_last_cell_update = (now - self.last_cell_update).as_secs_f32();
         let expected_secs_since_last_cell_update = 1.0 / SIM_FPS as f32;