diff --git a/js/game.js b/js/game.js
index 6f6e1f5..09f7498 100644
--- a/js/game.js
+++ b/js/game.js
@@ -446,7 +446,6 @@ export class Level extends LevelInterface {
         this.player2_move = null;
 
         // Connect buttons and teleporters
-        let num_cells = this.width * this.height;
         for (let connectable of connectables) {
             this.connect_button(connectable);
         }
@@ -856,6 +855,8 @@ export class Level extends LevelInterface {
     _do_init_phase() {
         // At the beginning of the very first tic, some tiles want to do initialization that's not
         // appropriate to do before the game begins
+        // FIXME this was originally added for bomb, which no longer uses it, so, god i would like
+        // to get rid of this
         if (! this.done_on_begin) {
             // Run backwards, to match actor order
             for (let i = this.linear_cells.length - 1; i >= 0; i--) {
diff --git a/js/tiletypes.js b/js/tiletypes.js
index 54368e6..89e02a1 100644
--- a/js/tiletypes.js
+++ b/js/tiletypes.js
@@ -1025,9 +1025,9 @@ const TILE_TYPES = {
     },
     hole: {
         layer: LAYERS.terrain,
-        on_begin(me, level) {
-            var one_north = level.cell(me.cell.x, me.cell.y - 1);
-            if (one_north === null || one_north.get_terrain().type.name != 'hole') {
+        on_ready(me, level) {
+            let one_north = level.cell(me.cell.x, me.cell.y - 1);
+            if (one_north === null || one_north.get_terrain().type.name !== 'hole') {
                 level._set_tile_prop(me, 'visual_state', 'north');
             }
             else {
@@ -1051,10 +1051,10 @@ const TILE_TYPES = {
 
             level.transmute_tile(me, 'hole');
             // Update hole visual state (note that me.type is hole now)
-            me.type.on_begin(me, level);
-            var one_south = level.cell(me.cell.x, me.cell.y + 1);
+            me.type.on_ready(me, level);
+            let one_south = level.cell(me.cell.x, me.cell.y + 1);
             if (one_south && one_south.get_terrain().type.name === 'hole') {
-                me.type.on_begin(one_south.get_terrain(), level);
+                me.type.on_ready(one_south.get_terrain(), level);
             }
         },
     },
@@ -1535,7 +1535,8 @@ const TILE_TYPES = {
     },
     trap: {
         layer: LAYERS.terrain,
-        on_begin(me, level) {
+        on_ready(me, level) {
+            // This may run before or after any pressed buttons, but, that's fine
             if (me.presses === undefined) {
                 level._set_tile_prop(me, 'presses', 0);
             }