diff --git a/kiln-core/src/action.rs b/kiln-core/src/action.rs
index 4238452..81d4ffb 100644
--- a/kiln-core/src/action.rs
+++ b/kiln-core/src/action.rs
@@ -50,9 +50,9 @@ impl From<Dynamic> for SendArg {
     }
 }
 
-impl Into<Dynamic> for SendArg {
-    fn into(self) -> Dynamic {
-        match self {
+impl From<SendArg> for Dynamic {
+    fn from(val: SendArg) -> Self {
+        match val {
             SendArg::None => Dynamic::UNIT,
             SendArg::Int(value) => Dynamic::from(value),
             SendArg::Float(value) => Dynamic::from(value),
@@ -240,13 +240,13 @@ pub(crate) fn action_to_map(action: &Action) -> rhai::Map {
         }
         Action::Teleport { x, y } => {
             m.insert("type".into(), ds("Teleport"));
-            m.insert("x".into(), Dynamic::from(*x as i64));
-            m.insert("y".into(), Dynamic::from(*y as i64));
+            m.insert("x".into(), Dynamic::from(*x));
+            m.insert("y".into(), Dynamic::from(*y));
         }
         Action::Push { x, y, dir } => {
             m.insert("type".into(), ds("Push"));
-            m.insert("x".into(), Dynamic::from(*x as i64));
-            m.insert("y".into(), Dynamic::from(*y as i64));
+            m.insert("x".into(), Dynamic::from(*x));
+            m.insert("y".into(), Dynamic::from(*y));
             m.insert("dir".into(), ds(dir_to_str(*dir)));
         }
         // Shift cells are not inspectable via the queue map API; emit type only.
diff --git a/kiln-core/src/api/board.rs b/kiln-core/src/api/board.rs
index 3c6fb57..ca9f15c 100644
--- a/kiln-core/src/api/board.rs
+++ b/kiln-core/src/api/board.rs
@@ -80,9 +80,7 @@ impl Registerable for BoardRef {
         engine.register_fn("tagged", move |board_ref: &mut BoardRef, tag: ImmutableString| -> rhai::Array {
                 let board = board_ref.borrow();
                 board
-                    .objects
-                    .iter()
-                    .filter_map(|(_id, def)| {
+                    .objects.values().filter_map(|def| {
                         if def.tags.contains(tag.as_str()) {
                             Some(Dynamic::from(ObjectInfo::from_def(def, board_ref.clone())))
                         } else {
diff --git a/kiln-core/src/board.rs b/kiln-core/src/board.rs
index c2fc600..402b6f7 100644
--- a/kiln-core/src/board.rs
+++ b/kiln-core/src/board.rs
@@ -103,11 +103,10 @@ impl Board {
 
     /// Replace the solid (if any) at `(x, y)` with `Empty`
     pub fn clear_solid(&mut self, x: usize, y: usize) {
-        if self.in_bounds((x as i64, y as i64)) {
-            if let Some(z) = self.solid_cell_layer(x, y) {
+        if self.in_bounds((x as i64, y as i64))
+            && let Some(z) = self.solid_cell_layer(x, y) {
                 *self.get_mut(z, x, y) = (Archetype::Empty.default_glyph(), Archetype::Empty)
             }
-        }
     }
 
     /// Returns the glyph to display at `(x, y)`, honoring layer draw order.
diff --git a/kiln-core/src/game.rs b/kiln-core/src/game.rs
index 364c0fd..6515074 100644
--- a/kiln-core/src/game.rs
+++ b/kiln-core/src/game.rs
@@ -163,7 +163,7 @@ impl GameState {
     /// the game is about to start — never during map deserialization, since a script
     /// may inspect the board.
     pub fn run_init(&mut self) {
-        self.scripts.run_init(ScriptState::from_game_state(&self));
+        self.scripts.run_init(ScriptState::from_game_state(self));
         self.resolve();
     }
 
@@ -177,7 +177,7 @@ impl GameState {
         // this runs exactly once per player interaction with a scroll.
         self.handle_scroll();
         let secs = dt.as_secs_f64();
-        self.scripts.run_tick(ScriptState::from_game_state(&self), secs);
+        self.scripts.run_tick(ScriptState::from_game_state(self), secs);
         // Expire speech bubbles before resolving new actions so a fresh say()
         // this frame isn't immediately culled.
         self.speech_bubbles.retain_mut(|b| {
@@ -370,7 +370,7 @@ impl GameState {
         if let Some(scroll) = self.active_scroll.take()
             && let Some(choice) = scroll.choice
         {
-            self.scripts.run_send(ScriptState::from_game_state(&self), scroll.source, &choice, SendArg::None);
+            self.scripts.run_send(ScriptState::from_game_state(self), scroll.source, &choice, SendArg::None);
             self.drain_errors();
         }
     }
@@ -437,7 +437,7 @@ impl GameState {
         {
             let (dx, dy): (i64, i64) = dir.into();
             let mut board = self.board_mut();
-            let target = (board.player.x as i64 + dx, board.player.y as i64 + dy);
+            let target = (board.player.x + dx, board.player.y + dy);
             if !board.in_bounds(target) {
                 return;
             }
@@ -476,7 +476,7 @@ impl GameState {
         }
         // Fire the grab hook and resolve it immediately so the grabbed thing's
         // die()/add_gems() apply now — no player+object overlap survives this call.
-        let state = ScriptState::from_game_state(&self);
+        let state = ScriptState::from_game_state(self);
         if let Some(id) = grabbed {
             self.scripts.run_grab(state.clone(), id);
             self.resolve();
diff --git a/kiln-core/src/script.rs b/kiln-core/src/script.rs
index 96050a6..6baf48b 100644
--- a/kiln-core/src/script.rs
+++ b/kiln-core/src/script.rs
@@ -247,7 +247,7 @@ impl ScriptHost {
                         Dynamic::from(info.clone()),
                         Dynamic::from(state.clone())
                     ];
-                    arg.map(|d| args.push(d));
+                    if let Some(d) = arg { args.push(d) }
 
                     // Call this with opts tagging this call as our id. The write API will read
                     // that to find what queue to emit events to
diff --git a/kiln-core/src/utils.rs b/kiln-core/src/utils.rs
index 40642ea..0fdc11e 100644
--- a/kiln-core/src/utils.rs
+++ b/kiln-core/src/utils.rs
@@ -434,7 +434,7 @@ pub enum Hook {
 }
 
 impl Hook {
-    pub fn to_str(&self) -> &'static str {
+    pub fn to_str(self) -> &'static str {
         match self {
             Hook::Init => "init",
             Hook::Bump => "bump",