From 0f045c39a3bf2b4f75b0a3568b10af4353a24c26 Mon Sep 17 00:00:00 2001
From: Ross Andrews <ross.andrews@gmail.com>
Date: Tue, 11 Aug 2026 23:01:12 -0500
Subject: [PATCH] wip 6 fixed tests

---
 kiln-core/src/board.rs              | 77 ++---------------------------
 kiln-core/src/builtin.rs            |  1 -
 kiln-core/src/game.rs               |  6 +--
 kiln-core/src/tests/actions.rs      | 52 ++++++++++---------
 kiln-core/src/tests/game_portals.rs |  3 +-
 kiln-core/src/tests/mod.rs          |  3 +-
 kiln-core/src/tests/movement.rs     | 46 ++++++-----------
 kiln-core/src/tests/scripting.rs    | 59 +++++++++++-----------
 kiln-core/src/utils.rs              | 57 ---------------------
 9 files changed, 77 insertions(+), 227 deletions(-)

diff --git a/kiln-core/src/board.rs b/kiln-core/src/board.rs
index cba2229..cf598b4 100644
--- a/kiln-core/src/board.rs
+++ b/kiln-core/src/board.rs
@@ -501,12 +501,11 @@ impl Board {
 
 #[cfg(test)]
 pub(crate) mod tests {
-    use std::assert_matches;
     use super::Board;
     use crate::builtin::Builtin;
     use crate::floor::Floor;
     use crate::glyph::Glyph;
-    use crate::utils::{Direction, ObjectId, Point};
+    use crate::utils::ObjectId;
     use color::Rgba8;
     use std::collections::HashMap;
     use crate::object_def::ObjectDef;
@@ -703,76 +702,6 @@ pub(crate) mod tests {
         assert!(!board.in_bounds((0, 2)));
     }
 
-    #[test]
-    fn can_shift_only_checks_the_cell_ahead() {
-        // Source must be pushable.
-        let mut board = open_board(4, 1, (3, 0));
-        assert!(!board.can_shift(0, 0, Direction::East)); // empty source
-
-        // Crate with open space ahead: shiftable.
-        crate_at(&mut board, 0, 0);
-        assert!(board.can_shift(0, 0, Direction::East));
-        assert_matches!(board.get((0, 0)), Some(Tile::Object(_)));
-
-        // Crate with another pushable crate ahead: still shiftable (unlike can_push,
-        // which would follow the chain to the wall and fail).
-        let mut board = open_board(4, 1, (3, 0));
-        crate_at(&mut board, 0, 0);
-        crate_at(&mut board, 1, 0);
-        wall_at(&mut board, 2, 0);
-        assert!(board.can_shift(0, 0, Direction::East));
-        assert!(!board.can_push(0, 0, Direction::East));
-
-        // Crate with a non-pushable wall ahead: not shiftable.
-        let mut board = open_board(3, 1, (2, 0));
-        crate_at(&mut board, 0, 0);
-        wall_at(&mut board, 1, 0);
-        assert!(!board.can_shift(0, 0, Direction::East));
-
-        // Crate at the board edge facing off-board: not shiftable.
-        let mut board = open_board(2, 1, (0, 0));
-        crate_at(&mut board, 1, 0);
-        assert!(!board.can_shift(1, 0, Direction::East));
-    }
-
-    #[test]
-    fn can_shift_treats_the_player_as_a_blocker() {
-        // The player is always a blocker for a shift — even a grab gem may not shift
-        // onto it (grab now fires only on player movement, not on being shifted in).
-        let mut board = open_board(2, 1, (1, 0));
-        gem_at(&mut board, 0, 0);
-        assert!(!board.can_shift(0, 0, Direction::East));
-
-        // A plain crate likewise may not shift onto the player.
-        let mut board = open_board(2, 1, (1, 0));
-        crate_at(&mut board, 0, 0);
-        assert!(!board.can_shift(0, 0, Direction::East));
-    }
-
-    #[test]
-    fn push_into_player_pushes_player() {
-        // Crate shoved east into the player slides the player along into open space.
-        let mut board = open_board(4, 1, (2, 0));
-        crate_at(&mut board, 1, 0);
-        assert!(board.can_push(1, 0, Direction::East));
-        board.push(1, 0, Direction::East);
-        assert!(board.get((1, 0)).is_none());
-        assert!(is_builtin(&board, 2, 0,"crate"));
-        assert_eq!(board.player_pos(), Point { x: 3, y: 0 });
-    }
-
-    #[test]
-    fn push_into_player_blocked_by_wall() {
-        // Player backed against a wall: push has nowhere to go, nothing moves.
-        let mut board = open_board(4, 1, (2, 0));
-        crate_at(&mut board, 1, 0);
-        wall_at(&mut board, 3, 0);
-        assert!(!board.can_push(1, 0, Direction::East));
-        board.push(1, 0, Direction::East); // no-op
-        assert!(is_builtin(&board, 1, 0, "crate"));
-        assert_eq!(board.player_pos(), Point { x: 2, y: 0 });
-    }
-
     #[test]
     fn glyph_at_uses_floor_for_empty_and_grid_for_solid() {
         // Player parked at (2,0) so it doesn't overlap either asserted cell.
@@ -812,7 +741,7 @@ pub(crate) mod tests {
 
     #[test]
     fn apply_shift_wall_stops_cascade_but_empty_limits_it() {
-        // A non-pushable Wall is immobile. Backward cascade from the wall traces
+        // A wall is immobile (`mobile = false`). Backward cascade from the wall traces
         // through preceding solids until it hits empty, marking those as blocked.
         // Solids on the *other* side of the empty (outside the blocked region) still move.
         let mut board = open_board(6, 1, (5, 0));
@@ -823,7 +752,7 @@ pub(crate) mod tests {
         crate_at(&mut board, 4, 0);
 
         // Cycle: idx 0 → idx 1 → idx 2 → idx 3 → idx 4 → idx 0 (wrap)
-        // immobile = {2} (Wall, Pushable::No)
+        // immobile = {2} (the wall: Tile::shiftable() is false)
         // Backward trace from idx 2: solids[2]=Some → blocked.insert(2), prev=1
         //   solids[1]=None (empty) → break
         // blocked = {2}; Crate at (0,0) is NOT blocked
diff --git a/kiln-core/src/builtin.rs b/kiln-core/src/builtin.rs
index 14c27f9..84f6f6c 100644
--- a/kiln-core/src/builtin.rs
+++ b/kiln-core/src/builtin.rs
@@ -1,6 +1,5 @@
 use std::collections::HashMap;
 use crate::glyph::Glyph;
-use crate::utils::Pushable;
 use color::Rgba8;
 use lazy_static::lazy_static;
 use crate::keys::KeyType;
diff --git a/kiln-core/src/game.rs b/kiln-core/src/game.rs
index 9e86c3e..1ba0fbc 100644
--- a/kiln-core/src/game.rs
+++ b/kiln-core/src/game.rs
@@ -483,9 +483,9 @@ mod tests {
 
     #[test]
     fn walking_onto_a_gem_grabs_it() {
-        // A gem builtin object at (1,0), running scripts/gem.rhai. Its
-        // EnterResponse::Grab means the player's step fires grab() rather than being
-        // blocked. The player starts at (0,0).
+        // A gem builtin object at (1,0), running scripts/gem.rhai. Its bump hook
+        // banks the gem and calls die(), so the cell clears and the player's step
+        // completes instead of being blocked. The player starts at (0,0).
         let mut board = open_board(3, 1, (0, 0));
         gem_at(&mut board, 1, 0);
         let mut game = GameState::new(board);
diff --git a/kiln-core/src/tests/actions.rs b/kiln-core/src/tests/actions.rs
index 243776d..a63aa4a 100644
--- a/kiln-core/src/tests/actions.rs
+++ b/kiln-core/src/tests/actions.rs
@@ -2,12 +2,11 @@ use super::{log_texts, scripts_from};
 use crate::board::tests::{crate_at, is_builtin, object_at, open_board, wall_at};
 use crate::game::GameState;
 use crate::glyph::Glyph;
-use crate::tile::EnterResponse;
 use crate::utils::{ObjectId, Point};
 use std::time::Duration;
 
 /// The cell object `id` currently occupies.
-fn loc(game: &GameState, id: ObjectId) -> (usize, usize) {
+fn loc(game: &GameState, id: ObjectId) -> Point {
     game.board()
         .get_hookable(id)
         .expect("object still on the board")
@@ -22,13 +21,12 @@ fn glyph(game: &GameState, id: ObjectId) -> Glyph {
         .glyph()
 }
 
-/// Builds a game with one `Block` object at `(x, y)` running `src`, plus the player
+/// Builds a game with one immobile object at `(x, y)` running `src`, plus the player
 /// parked at `player`, and runs `init()`.
 ///
-/// The mover is `EnterResponse::Block` — an ordinary solid that blocks others and
-/// cannot be shoved, which is what a self-propelled scripted object should be. Its
-/// `enter_response` describes how it answers *others* entering its cell and should
-/// not constrain its own `move()`.
+/// The mover is `mobile = false`: nothing else may relocate it (a `shift` skips it,
+/// and it has no `bump` hook to shove itself aside). That flag constrains only what
+/// *others* can do to it — it never restricts the object's own `move()`.
 fn game_with_mover(
     w: usize,
     h: usize,
@@ -37,7 +35,7 @@ fn game_with_mover(
     src: &str,
 ) -> (GameState, ObjectId) {
     let mut board = open_board(w, h, player);
-    let id = object_at(&mut board, at.0, at.1, "m", EnterResponse::Block);
+    let id = object_at(&mut board, at.0, at.1, "m", false);
     let mut game = GameState::with_scripts(board, scripts_from(&[("m", src)]));
     game.run_init();
     (game, id)
@@ -47,23 +45,23 @@ fn game_with_mover(
 fn move_command_relocates_the_source_object() {
     let (game, id) = game_with_mover(5, 3, (0, 0), (2, 1), "fn init(me) { move(East); }");
     // East increments x by one; the object started at (2, 1).
-    assert_eq!(loc(&game, id), (3, 1));
+    assert_eq!(loc(&game, id), Point { x: 3, y: 1 });
 }
 
 #[test]
 fn move_into_a_wall_or_edge_is_a_noop() {
     // Object at the west edge moving west: out of bounds, ignored.
     let (game, id) = game_with_mover(5, 3, (0, 0), (0, 1), "fn init(me) { move(West); }");
-    assert_eq!(loc(&game, id), (0, 1));
+    assert_eq!(loc(&game, id), Point { x: 0, y: 1 });
 
     // Object facing a wall: blocked, also ignored.
     let mut board = open_board(5, 3, (0, 0));
-    let id = object_at(&mut board, 1, 1, "m", EnterResponse::Block);
+    let id = object_at(&mut board, 1, 1, "m", false);
     wall_at(&mut board, 2, 1);
     let mut game =
         GameState::with_scripts(board, scripts_from(&[("m", "fn init(me) { move(East); }")]));
     game.run_init();
-    assert_eq!(loc(&game, id), (1, 1));
+    assert_eq!(loc(&game, id), Point { x: 1, y: 1 });
 }
 
 #[test]
@@ -76,13 +74,13 @@ fn set_tile_command_changes_the_source_glyph() {
 fn object_pushes_crate_on_init() {
     // A scripted object moving east into a crate shoves it (the step_object path).
     let mut board = open_board(4, 1, (0, 0));
-    let id = object_at(&mut board, 1, 0, "m", EnterResponse::Block);
+    let id = object_at(&mut board, 1, 0, "m", false);
     crate_at(&mut board, 2, 0);
     let mut game =
         GameState::with_scripts(board, scripts_from(&[("m", "fn init(me) { move(East); }")]));
     game.run_init();
 
-    assert_eq!(loc(&game, id), (2, 0));
+    assert_eq!(loc(&game, id), Point { x: 2, y: 0 });
     let b = game.board();
     assert!(is_builtin(&b, 3, 0, "crate")); // crate shoved one east
     assert!(b.get((1, 0)).is_none()); // the object's old cell is vacated
@@ -92,18 +90,18 @@ fn object_pushes_crate_on_init() {
 fn object_push_into_player() {
     // A scripted object moving into the player pushes the player when there's room.
     let (game, id) = game_with_mover(5, 1, (2, 0), (1, 0), "fn init(me) { move(East); }");
-    assert_eq!(loc(&game, id), (2, 0));
+    assert_eq!(loc(&game, id), Point { x: 2, y: 0 });
     assert_eq!(game.board().player_pos(), Point { x: 3, y: 0 });
 
     // With a wall behind the player, the object is blocked and nothing moves.
     let mut board = open_board(4, 1, (2, 0));
-    let id = object_at(&mut board, 1, 0, "m", EnterResponse::Block);
+    let id = object_at(&mut board, 1, 0, "m", false);
     wall_at(&mut board, 3, 0);
     let mut game =
         GameState::with_scripts(board, scripts_from(&[("m", "fn init(me) { move(East); }")]));
     game.run_init();
 
-    assert_eq!(loc(&game, id), (1, 0));
+    assert_eq!(loc(&game, id), Point { x: 1, y: 0 });
     assert_eq!(game.board().player_pos(), Point { x: 2, y: 0 });
 }
 
@@ -118,16 +116,16 @@ fn move_cost_rate_limits_repeated_moves() {
         (1, 0),
         "fn init(me) { move(East); move(East); }",
     );
-    assert_eq!(loc(&game, id).0, 2); // first move applied (1 -> 2)
+    assert_eq!(loc(&game, id).x, 2); // first move applied (1 -> 2)
 
     // 200 ms of ticks: still inside the cooldown, no further movement.
     game.tick(Duration::from_millis(100));
     game.tick(Duration::from_millis(100));
-    assert_eq!(loc(&game, id).0, 2);
+    assert_eq!(loc(&game, id).x, 2);
 
     // Crossing the 250 ms mark releases the queued second move.
     game.tick(Duration::from_millis(100));
-    assert_eq!(loc(&game, id).0, 3);
+    assert_eq!(loc(&game, id).x, 3);
 }
 
 #[test]
@@ -135,7 +133,7 @@ fn inline_delay_paces_subsequent_moves() {
     // move() always appends a Delay(250 ms) to the queue, so a second queued move
     // is held back by that delay even if the first move was blocked by a wall.
     let mut board = open_board(3, 3, (0, 0));
-    let id = object_at(&mut board, 1, 1, "m", EnterResponse::Block);
+    let id = object_at(&mut board, 1, 1, "m", false);
     wall_at(&mut board, 2, 1);
     let mut game = GameState::with_scripts(
         board,
@@ -143,16 +141,16 @@ fn inline_delay_paces_subsequent_moves() {
     );
     game.run_init();
     // First (eastward) move is blocked by the wall: object hasn't moved.
-    assert_eq!(loc(&game, id), (1, 1));
+    assert_eq!(loc(&game, id), Point { x: 1, y: 1 });
 
     // The Delay(250 ms) appended by move(East) is still live, so South is pending.
     game.tick(Duration::from_millis(100));
     game.tick(Duration::from_millis(100));
-    assert_eq!(loc(&game, id), (1, 1));
+    assert_eq!(loc(&game, id), Point { x: 1, y: 1 });
 
     // Past 250 ms the queued South move resolves.
     game.tick(Duration::from_millis(100));
-    assert_eq!(loc(&game, id), (1, 2));
+    assert_eq!(loc(&game, id), Point { x: 1, y: 2 });
 }
 
 #[test]
@@ -181,7 +179,7 @@ fn queue_clear_drops_pending_actions() {
         "fn init(me) { move(East); move(East); me.queue.clear(); }",
     );
     game.tick(Duration::from_millis(300));
-    assert_eq!(loc(&game, id), (1, 0)); // never moved
+    assert_eq!(loc(&game, id), Point { x: 1, y: 0 }); // never moved
 }
 
 #[test]
@@ -190,7 +188,7 @@ fn blocked_reports_solid_and_clear() {
 
     // Solid ahead (a wall): blocked() is true.
     let mut board = open_board(3, 1, (0, 0));
-    let id = object_at(&mut board, 1, 0, "b", EnterResponse::Block);
+    let id = object_at(&mut board, 1, 0, "b", false);
     wall_at(&mut board, 2, 0);
     let mut game = GameState::with_scripts(board, scripts_from(&[("b", src)]));
     game.run_init();
@@ -198,7 +196,7 @@ fn blocked_reports_solid_and_clear() {
 
     // Open ahead, nothing pending: blocked() is false.
     let mut board = open_board(3, 1, (0, 0));
-    let id = object_at(&mut board, 1, 0, "b", EnterResponse::Block);
+    let id = object_at(&mut board, 1, 0, "b", false);
     let mut game = GameState::with_scripts(board, scripts_from(&[("b", src)]));
     game.run_init();
     assert_eq!(glyph(&game, id).tile, 'N');
diff --git a/kiln-core/src/tests/game_portals.rs b/kiln-core/src/tests/game_portals.rs
index 77a2624..64e29c6 100644
--- a/kiln-core/src/tests/game_portals.rs
+++ b/kiln-core/src/tests/game_portals.rs
@@ -30,8 +30,7 @@ fn portal(
     target_name: &str,
 ) -> Portal {
     Portal {
-        x,
-        y,
+        location: (x, y).into(),
         name: name.to_string(),
         target_board: target_board.to_string(),
         target_name: target_name.to_string(),
diff --git a/kiln-core/src/tests/mod.rs b/kiln-core/src/tests/mod.rs
index 604ffe8..feda5a7 100644
--- a/kiln-core/src/tests/mod.rs
+++ b/kiln-core/src/tests/mod.rs
@@ -1,7 +1,6 @@
 mod actions;
-// TODO(migration): map_file is not yet ported — it is blocked on the map files
-// themselves still being pre-BoardSpec (see todo.md #1).
 mod game_portals;
+// TODO(migration): the map_file suite predates BoardSpec and is not ported yet.
 // mod map_file;
 mod movement;
 mod scripting;
diff --git a/kiln-core/src/tests/movement.rs b/kiln-core/src/tests/movement.rs
index 8c5eaf4..ab21a95 100644
--- a/kiln-core/src/tests/movement.rs
+++ b/kiln-core/src/tests/movement.rs
@@ -1,16 +1,17 @@
 //! Player push mechanics, driven through [`GameState::try_move`].
 //!
-//! Pushability now lives on the target's [`EnterResponse`]: `Push(Pushable::Any)`
-//! for a crate, `Push(Horizontal)`/`Push(Vertical)` for the axis-locked ones, and
-//! `Block` for a wall. `try_move` consults `Board::can_push` and, when the chain
-//! can move, pushes from the *player's* cell — the player is itself pushable, so it
-//! rides along at the head of the chain.
+//! Pushing is not a board primitive: [`GameState::resolve_move`] just fires the
+//! target's `bump` hook and then re-checks whether the cell it wanted has become
+//! free. A crate slides because `crate.rhai`'s `bump` pushes the cell ahead of it
+//! and then teleports itself into the space; an `hcrate`/`vcrate` returns early
+//! from `bump` on the axis it refuses; a wall has no script at all, so nothing
+//! ever clears its cell. The player is moved by the same recursion, so a chain
+//! shoved into it slides it along.
 
-use crate::board::tests::{add_floor, builtin_at, crate_at, is_builtin, open_board, plain_object_at, wall_at};
+use crate::board::tests::{add_floor, builtin_at, crate_at, is_builtin, open_board, wall_at};
 use crate::game::GameState;
 use crate::glyph::Glyph;
-use crate::tile::EnterResponse;
-use crate::utils::{Direction, Point, Pushable};
+use crate::utils::{Direction, Point};
 use color::Rgba8;
 
 #[test]
@@ -105,27 +106,9 @@ fn cascade_blocked_by_wall_moves_nothing() {
     assert!(is_builtin(&b, 2, 0, "crate"));
 }
 
-#[test]
-fn player_pushes_pushable_solid_object() {
-    // A plain object whose EnterResponse is Push(Any) is shoved exactly like a
-    // crate — the crate builtin has no privileged status, it just carries that
-    // same enter response.
-    let mut board = open_board(4, 1, (0, 0));
-    let id = plain_object_at(&mut board, 1, 0, EnterResponse::Push(Pushable::Any));
-    let mut game = GameState::new(board);
-    game.try_move(Direction::East);
-
-    let b = game.board();
-    assert_eq!(b.player_pos(), Point { x: 1, y: 0 });
-    assert_eq!(
-        b.get_hookable(id).expect("object still on the board").location(),
-        (2, 0)
-    );
-}
-
 #[test]
 fn hcrate_pushes_east_but_not_north() {
-    // Pushing east: Push(Horizontal) allows it, so the HCrate slides.
+    // Pushing east: hcrate.rhai accepts the axis, so the HCrate slides.
     let mut board = open_board(4, 1, (0, 0));
     builtin_at(&mut board, 1, 0, "hcrate");
     let mut game = GameState::new(board);
@@ -136,8 +119,8 @@ fn hcrate_pushes_east_but_not_north() {
         assert!(is_builtin(&b, 2, 0, "hcrate"));
     }
 
-    // Pushing north into an HCrate: the direction isn't allowed, so can_push fails
-    // and the move degrades to a bump — nothing moves.
+    // Pushing north into an HCrate: its bump hook returns early on the vertical
+    // axis, so its cell never clears and nothing moves.
     let mut board = open_board(1, 4, (0, 3));
     builtin_at(&mut board, 0, 2, "hcrate");
     let mut game = GameState::new(board);
@@ -150,7 +133,7 @@ fn hcrate_pushes_east_but_not_north() {
 
 #[test]
 fn vcrate_pushes_north_but_not_east() {
-    // Pushing north: Push(Vertical) allows it, so the VCrate slides.
+    // Pushing north: vcrate.rhai accepts the axis, so the VCrate slides.
     let mut board = open_board(1, 4, (0, 3));
     builtin_at(&mut board, 0, 2, "vcrate");
     let mut game = GameState::new(board);
@@ -161,7 +144,8 @@ fn vcrate_pushes_north_but_not_east() {
         assert!(is_builtin(&b, 0, 1, "vcrate"));
     }
 
-    // Pushing east into a VCrate: blocked, nothing moves.
+    // Pushing east into a VCrate: its bump hook refuses the horizontal axis,
+    // so nothing moves.
     let mut board = open_board(4, 1, (0, 0));
     builtin_at(&mut board, 1, 0, "vcrate");
     let mut game = GameState::new(board);
diff --git a/kiln-core/src/tests/scripting.rs b/kiln-core/src/tests/scripting.rs
index 34ff1f9..d17ce27 100644
--- a/kiln-core/src/tests/scripting.rs
+++ b/kiln-core/src/tests/scripting.rs
@@ -2,12 +2,11 @@ use super::{log_texts, scripts_from};
 use crate::board::Board;
 use crate::board::tests::{object_at, open_board, plain_object_at, sensor_at};
 use crate::game::{GameState, ScrollLine};
-use crate::tile::EnterResponse;
 use crate::utils::{Direction, ObjectId, Point};
 use std::collections::HashMap;
 use std::time::Duration;
 
-/// Builds a 2×1 board with a single `Block` object at (0,0) that optionally
+/// Builds a 2×1 board with a single immobile object at (0,0) that optionally
 /// references a script, the player parked at (1,0), and the `(name, source)`
 /// entries as a script map. Returns the object's id alongside them.
 ///
@@ -19,8 +18,8 @@ fn board_with_object(
 ) -> (Board, HashMap<String, String>, ObjectId) {
     let mut board = open_board(2, 1, (1, 0));
     let id = match object_script {
-        Some(name) => object_at(&mut board, 0, 0, name, EnterResponse::Block),
-        None => plain_object_at(&mut board, 0, 0, EnterResponse::Block),
+        Some(name) => object_at(&mut board, 0, 0, name, false),
+        None => plain_object_at(&mut board, 0, 0, false),
     };
     (board, scripts_from(scripts), id)
 }
@@ -35,7 +34,7 @@ fn has_tag(game: &GameState, id: ObjectId, tag: &str) -> bool {
 }
 
 /// The cell object `id` currently occupies.
-fn loc(game: &GameState, id: ObjectId) -> (usize, usize) {
+fn loc(game: &GameState, id: ObjectId) -> Point {
     game.board()
         .get_hookable(id)
         .expect("object still on the board")
@@ -113,7 +112,7 @@ fn compile_and_unknown_script_errors_are_logged() {
 #[test]
 fn script_reads_board_through_view() {
     let mut board = open_board(5, 3, (3, 1));
-    object_at(&mut board, 2, 1, "r", EnterResponse::Block);
+    object_at(&mut board, 2, 1, "r", false);
     let mut game = GameState::with_scripts(
         board,
         scripts_from(&[("r", "fn init(me) { log(Player.x.to_string()); }")]),
@@ -127,8 +126,8 @@ fn commands_are_routed_to_their_own_source_object() {
     // Two objects with different scripts move in opposite directions; each must
     // affect only itself (the per-call tag routes the command to its source queue).
     let mut board = open_board(5, 3, (0, 0));
-    let east = object_at(&mut board, 0, 1, "e", EnterResponse::Block);
-    let west = object_at(&mut board, 4, 1, "w", EnterResponse::Block);
+    let east = object_at(&mut board, 0, 1, "e", false);
+    let west = object_at(&mut board, 4, 1, "w", false);
     let mut game = GameState::with_scripts(
         board,
         scripts_from(&[
@@ -137,8 +136,8 @@ fn commands_are_routed_to_their_own_source_object() {
         ]),
     );
     game.run_init();
-    assert_eq!(loc(&game, east), (1, 1)); // moved east from 0
-    assert_eq!(loc(&game, west), (3, 1)); // moved west from 4
+    assert_eq!(loc(&game, east), Point { x: 1, y: 1 }); // moved east from 0
+    assert_eq!(loc(&game, west), Point { x: 3, y: 1 }); // moved west from 4
 }
 
 #[test]
@@ -150,7 +149,7 @@ fn start_map_greeter_runs_init() {
     // Keep the failure message short: a TomlError's Display embeds the whole file.
     let mut world = crate::world::load(path).unwrap_or_else(|e| {
         let first = e.to_string().lines().next().unwrap_or_default().to_string();
-        panic!("load start.toml failed (see todo.md #1, maps are still pre-BoardSpec): {first}")
+        panic!("load start.toml failed: {first}")
     });
     // Pin to the "start" board regardless of the world's current default entry point.
     world.start = "start".to_string();
@@ -222,8 +221,8 @@ fn objects_with_tag_returns_matching_ids() {
     // A 5×1 board with two objects; one has tag "enemy". The script on the first
     // queries Board.tagged("enemy") and logs the count and the id it found.
     let mut board = open_board(5, 1, (4, 0));
-    object_at(&mut board, 0, 0, "q", EnterResponse::Block);
-    let enemy = object_at(&mut board, 1, 0, "none", EnterResponse::Block);
+    object_at(&mut board, 0, 0, "q", false);
+    let enemy = object_at(&mut board, 1, 0, "none", false);
     board
         .scripting_mut(enemy)
         .unwrap()
@@ -274,8 +273,8 @@ fn object_id_for_name_finds_by_name() {
     // A board with two objects; one is named. The querying object uses Board.named
     // to find it and logs its id, then confirms a miss returns ().
     let mut board = open_board(5, 1, (4, 0));
-    object_at(&mut board, 0, 0, "q", EnterResponse::Block);
-    let target = object_at(&mut board, 1, 0, "none", EnterResponse::Block);
+    object_at(&mut board, 0, 0, "q", false);
+    let target = object_at(&mut board, 1, 0, "none", false);
     board.scripting_mut(target).unwrap().name = Some("target".to_string());
     let mut game = GameState::with_scripts(
         board,
@@ -303,10 +302,10 @@ fn object_id_for_name_finds_by_name() {
 
 #[test]
 fn player_bump_reports_the_direction_it_came_from() {
-    // The player walks East into a Block object; the object is bumped from the West
+    // The player walks East into a scripted solid; the object is bumped from the West
     // side (opposite the player's travel) and the player does not move onto it.
     let mut board = open_board(3, 1, (0, 0));
-    object_at(&mut board, 1, 0, "b", EnterResponse::Block);
+    object_at(&mut board, 1, 0, "b", false);
     let mut game = GameState::with_scripts(
         board,
         scripts_from(&[("b", "fn bump(me, dir) { log(`bumped from ${dir}`); }")]),
@@ -322,7 +321,7 @@ fn player_bump_reports_the_direction_it_came_from() {
 fn bump_direction_supports_comparison_and_offset() {
     // A bump handler can compare the direction and read its dx/dy to locate the bumper.
     let mut board = open_board(3, 1, (0, 0));
-    object_at(&mut board, 1, 0, "b", EnterResponse::Block);
+    object_at(&mut board, 1, 0, "b", false);
     let mut game = GameState::with_scripts(
         board,
         scripts_from(&[(
@@ -341,10 +340,10 @@ fn bump_direction_supports_comparison_and_offset() {
 
 #[test]
 fn scroll_opens_on_player_bump() {
-    // A Block object's bump() calls scroll([text, [choice, display]]). The bump
+    // A solid object's bump() calls scroll([text, [choice, display]]). The bump
     // resolves inside try_move, so active_scroll is set with the right variants.
     let mut board = open_board(3, 1, (0, 0));
-    object_at(&mut board, 1, 0, "s", EnterResponse::Block);
+    object_at(&mut board, 1, 0, "s", false);
     let mut game = GameState::with_scripts(
         board,
         scripts_from(&[(
@@ -370,7 +369,7 @@ fn scroll_opens_on_player_bump() {
 #[test]
 fn handle_scroll_without_choice_clears_it() {
     let mut board = open_board(3, 1, (0, 0));
-    object_at(&mut board, 1, 0, "s", EnterResponse::Block);
+    object_at(&mut board, 1, 0, "s", false);
     let mut game = GameState::with_scripts(
         board,
         scripts_from(&[("s", r#"fn bump(me, dir) { scroll(["Hello"]); }"#)]),
@@ -389,7 +388,7 @@ fn handle_scroll_with_choice_dispatches_send_to_source() {
     // Setting choice on the scroll before a tick fires send() on the source object;
     // fn eat() logging "eaten" confirms the dispatch arrived.
     let mut board = open_board(3, 1, (0, 0));
-    object_at(&mut board, 1, 0, "s", EnterResponse::Block);
+    object_at(&mut board, 1, 0, "s", false);
     let mut game = GameState::with_scripts(
         board,
         scripts_from(&[(
@@ -424,8 +423,8 @@ fn a_later_object_sees_an_earlier_objects_move_this_tick() {
     // this tick, B observes it as blocked — under a collect-all-then-apply model B
     // would have seen (1,0) still empty.
     let mut board = open_board(3, 2, (2, 1));
-    let a = object_at(&mut board, 0, 0, "a", EnterResponse::Block);
-    object_at(&mut board, 1, 1, "b", EnterResponse::Block);
+    let a = object_at(&mut board, 0, 0, "a", false);
+    object_at(&mut board, 1, 1, "b", false);
     let mut game = GameState::with_scripts(
         board,
         scripts_from(&[
@@ -441,7 +440,7 @@ fn a_later_object_sees_an_earlier_objects_move_this_tick() {
     game.tick(Duration::from_millis(16));
 
     // A moved onto (1,0), and B saw it there the same tick.
-    assert_eq!(loc(&game, a), (1, 0));
+    assert_eq!(loc(&game, a), Point { x: 1, y: 0 });
     assert_eq!(log_texts(&game), vec!["blocked"]);
 }
 
@@ -453,7 +452,7 @@ fn tick_is_gated_on_an_empty_queue() {
     // draining the engine skips re-running `tick`. With 100 ms frames the object steps
     // once (x=1) then waits ~0.25s before the next call fires.
     let mut board = open_board(6, 1, (5, 0));
-    let id = object_at(&mut board, 0, 0, "m", EnterResponse::Block);
+    let id = object_at(&mut board, 0, 0, "m", false);
     let mut game = GameState::with_scripts(
         board,
         // Note: no `if me.queue.length == 0` guard — the engine provides it.
@@ -466,12 +465,12 @@ fn tick_is_gated_on_an_empty_queue() {
     for _ in 0..3 {
         game.tick(Duration::from_millis(100));
     }
-    assert_eq!(loc(&game, id).0, 1);
+    assert_eq!(loc(&game, id).x, 1);
 
     // Once the Delay fully drains the queue empties, so the next frame calls `tick`
     // again and the object takes its second step.
     game.tick(Duration::from_millis(100));
-    assert_eq!(loc(&game, id).0, 2);
+    assert_eq!(loc(&game, id).x, 2);
 }
 
 #[test]
@@ -487,8 +486,8 @@ fn a_send_cycle_defers_instead_of_recursing() {
     // recurse until the stack blows. That this test *returns at all* is half the
     // assertion; the log growth is the other half.
     let mut board = open_board(3, 1, (2, 0));
-    let a = object_at(&mut board, 0, 0, "a", EnterResponse::Block);
-    let b = object_at(&mut board, 1, 0, "b", EnterResponse::Block);
+    let a = object_at(&mut board, 0, 0, "a", false);
+    let b = object_at(&mut board, 1, 0, "b", false);
     let mut game = GameState::with_scripts(
         board,
         scripts_from(&[
diff --git a/kiln-core/src/utils.rs b/kiln-core/src/utils.rs
index 85c87e2..6216b0e 100644
--- a/kiln-core/src/utils.rs
+++ b/kiln-core/src/utils.rs
@@ -6,36 +6,6 @@ use serde::{Deserialize, Serialize};
 use crate::log::LogLine;
 use crate::script::Registerable;
 
-/// Which directions a solid may be pushed in.
-///
-/// Only meaningful for `solid` cells (a non-solid cell is passable, so nothing is
-/// ever pushed into it). `Crate` is [`Pushable::Any`]; the directional crates
-/// constrain pushes to one axis.
-#[derive(Copy, Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
-#[serde(rename_all = "lowercase")]
-pub enum Pushable {
-    /// Cannot be pushed.
-    No,
-    /// Pushable in any direction.
-    Any,
-    /// Pushable east/west only.
-    Horizontal,
-    /// Pushable north/south only.
-    Vertical,
-}
-
-impl Pushable {
-    /// Whether a push in `dir` is allowed.
-    pub fn allows(self, dir: Direction) -> bool {
-        match self {
-            Pushable::No => false,
-            Pushable::Any => true,
-            Pushable::Horizontal => matches!(dir, Direction::East | Direction::West),
-            Pushable::Vertical => matches!(dir, Direction::North | Direction::South),
-        }
-    }
-}
-
 /// A stable, unique identifier for a board object.
 ///
 /// Ids are handed out by [`Board::add_object`] from the per-board
@@ -303,30 +273,3 @@ impl LogSink {
         std::mem::take(&mut self.0.borrow_mut())
     }
 }
-
-#[cfg(test)]
-mod tests {
-    use super::Pushable;
-    use crate::utils::Direction;
-
-    #[test]
-    fn pushable_allows_only_its_axis() {
-        for d in [
-            Direction::North,
-            Direction::South,
-            Direction::East,
-            Direction::West,
-        ] {
-            assert!(!Pushable::No.allows(d));
-            assert!(Pushable::Any.allows(d));
-        }
-        assert!(Pushable::Horizontal.allows(Direction::East));
-        assert!(Pushable::Horizontal.allows(Direction::West));
-        assert!(!Pushable::Horizontal.allows(Direction::North));
-        assert!(!Pushable::Horizontal.allows(Direction::South));
-        assert!(Pushable::Vertical.allows(Direction::North));
-        assert!(Pushable::Vertical.allows(Direction::South));
-        assert!(!Pushable::Vertical.allows(Direction::East));
-        assert!(!Pushable::Vertical.allows(Direction::West));
-    }
-}