diff --git a/src/block_placement.rs b/src/block_placement.rs
index 56d5f92..89cdf99 100644
--- a/src/block_placement.rs
+++ b/src/block_placement.rs
@@ -3,24 +3,23 @@ use shipyard::{UniqueViewMut, UniqueView, View, IntoIter};
 use crate::{
   player::MainPlayer, 
   world::{raycast::LookingAtBlock, ChunkStorage, block::Block}, 
-  input::Inputs
+  input::{Inputs, PrevInputs}
 };
 
 pub fn block_placement_system(
   main_player: View<MainPlayer>,
   raycast: View<LookingAtBlock>,
   input: UniqueView<Inputs>,
+  prev_input: UniqueView<PrevInputs>,
   mut world: UniqueViewMut<ChunkStorage>
 ) {
-  if input.action_a && input.action_b {
-    return
-  }
-  if input.action_a || input.action_b {
+  let action_place = input.action_b && !prev_input.0.action_b;
+  let action_break = input.action_a && !prev_input.0.action_a;
+  if action_place ^ action_break {
     //get raycast info
     let Some(ray) = (&main_player, &raycast).iter().next().unwrap().1/**/.0 else { return };
     //update block
-    let is_place = input.action_b;
-    let place_position = if is_place {
+    let place_position = if action_place {
       let position = (ray.position - ray.direction * 0.5).floor().as_ivec3();
       let Some(block) = world.get_block_mut(position) else { return };
       *block = Block::Dirt;
diff --git a/src/input.rs b/src/input.rs
index 522b569..7f408e9 100644
--- a/src/input.rs
+++ b/src/input.rs
@@ -13,6 +13,9 @@ pub struct Inputs {
   pub action_b: bool,
 }
 
+#[derive(Unique, Clone, Copy, Default, Debug)]
+pub struct PrevInputs(pub Inputs);
+
 #[derive(Unique, Clone, Default, Debug)]
 pub struct RawInputState {
   pub keyboard_state: HashSet<VirtualKeyCode, BuildNoHashHasher<u32>>,
@@ -51,7 +54,9 @@ pub fn process_events(
 pub fn update_input_states (
   raw_inputs: UniqueView<RawInputState>,
   mut inputs: UniqueViewMut<Inputs>,
+  mut prev_inputs: UniqueViewMut<PrevInputs>,
 ) {
+  prev_inputs.0 = *inputs;
   inputs.movement = Vec2::new(
     raw_inputs.keyboard_state.contains(&VirtualKeyCode::D) as u32 as f32 -
     raw_inputs.keyboard_state.contains(&VirtualKeyCode::A) as u32 as f32,
@@ -67,6 +72,7 @@ pub fn init_input (
   storages: AllStoragesView
 ) {
   storages.add_unique(Inputs::default());
+  storages.add_unique(PrevInputs::default());
   storages.add_unique(RawInputState::default());
 }