Implement Cracked Ice

Cracked Ice: Turns into water when something steps off of it (except ghosts).
Also had to implement slide_ignores/item_slide_ignores since I needed a way to ignore static aspects of the tile without preventing its functions from being called. there's probably a better way IDK

js/format-c2g.js

@@ -799,6 +799,10 @@ const TILE_ENCODING = {
         name: 'cracked_floor',
         is_extension: true,
     },
+    0xd3: {
+        name: 'cracked_ice',
+        is_extension: true,
+    },
     0xe0: {
         name: 'gift_bow',
         has_next: true,

js/game.js

@@ -107,6 +107,21 @@ export class Tile {
 
         return false;
     }
+    
+    slide_ignores(name) {
+        if (this.type.slide_ignores && this.type.slide_ignores.has(name))
+            return true;
+
+        if (this.toolbelt) {
+            for (let item of this.toolbelt) {
+                let item_type = TILE_TYPES[item];
+                if (item_type.item_slide_ignores && item_type.item_slide_ignores.has(name))
+                    return true;
+            }
+        }
+
+        return false;
+    }
 
     can_push(tile, direction) {
         // This tile already has a push queued, sorry
@@ -1509,7 +1524,7 @@ export class Level extends LevelInterface {
         if (actor.has_item('speed_boots')) {
             speed /= 2;
         }
-        else if (terrain && terrain.type.speed_factor && ! actor.ignores(terrain.type.name)) {
+        else if (terrain && terrain.type.speed_factor && ! actor.ignores(terrain.type.name) && !actor.slide_ignores(terrain.type.name)) {
             speed /= terrain.type.speed_factor;
         }
 
@@ -1594,6 +1609,8 @@ export class Level extends LevelInterface {
                 continue;
             if (actor.ignores(tile.type.name))
                 continue;
+            if (actor.slide_ignores(tile.type.name))
+                continue;
 
             // Possibly kill a player
             if (actor.has_item('helmet') || tile.has_item('helmet')) {

js/main-editor.js

@@ -1607,6 +1607,7 @@ const EDITOR_PALETTE = [{
         'electrified_floor',
         'hole',
         'cracked_floor',
+        'cracked_ice',
     ],
 }];
 
@@ -2217,6 +2218,10 @@ const EDITOR_TILE_DESCRIPTIONS = {
         name: "Cracked Floor",
         desc: "Turns into a hole when something steps off of it (except ghosts).",
     },
+    cracked_ice: {
+        name: "Cracked Ice",
+        desc: "Turns into water when something steps off of it (except ghosts).",
+    },
 };
 
 const SPECIAL_PALETTE_ENTRIES = {

js/tileset.js

@@ -1061,6 +1061,7 @@ export const LL_TILESET_LAYOUT = Object.assign({}, CC2_TILESET_LAYOUT, {
         open: [9, 41],
     },
     cracked_floor: [11, 43],
+    cracked_ice: [7, 40],
 });
 
 export const TILESET_LAYOUTS = {

js/tiletypes.js

@@ -841,6 +841,16 @@ const TILE_TYPES = {
             level.sfx.play_once('splash', me.cell);
         },
     },
+    cracked_ice: {
+        layer: LAYERS.terrain,
+        slide_mode: 'ice',
+        speed_factor: 2,
+        on_depart(me, level, other) {
+            level.transmute_tile(me, 'water');
+            level.spawn_animation(me.cell, 'splash');
+            level.sfx.play_once('splash', me.cell);
+        },
+    },
     ice: {
         layer: LAYERS.terrain,
         slide_mode: 'ice',
@@ -2579,7 +2589,7 @@ const TILE_TYPES = {
         ignores: new Set([
             'bomb',
             'water',
-            'ice', 'ice_nw', 'ice_ne', 'ice_sw', 'ice_se',
+            'ice', 'ice_nw', 'ice_ne', 'ice_sw', 'ice_se', 'cracked_ice',
             'force_floor_n', 'force_floor_s', 'force_floor_e', 'force_floor_w', 'force_floor_all',
             // Ghosts don't activate swivels or popwalls
             'popwall', 'swivel_nw', 'swivel_ne', 'swivel_se', 'swivel_sw',
@@ -2700,7 +2710,7 @@ const TILE_TYPES = {
         is_item: true,
         is_tool: true,
         blocks_collision: COLLISION.block_cc1 | (COLLISION.monster_solid & ~COLLISION.rover),
-        item_ignores: new Set(['ice', 'ice_nw', 'ice_ne', 'ice_sw', 'ice_se']),
+        item_slide_ignores: new Set(['ice', 'ice_nw', 'ice_ne', 'ice_sw', 'ice_se', 'cracked_ice']),
     },
     suction_boots: {
         layer: LAYERS.item,
@@ -3004,7 +3014,7 @@ const TILE_TYPES = {
         has_inventory: true,
         can_reveal_walls: true,
         movement_speed: 4,
-        ignores: new Set(['ice', 'ice_nw', 'ice_ne', 'ice_sw', 'ice_se']),
+        ignores: new Set(['ice', 'ice_nw', 'ice_ne', 'ice_sw', 'ice_se', 'cracked_ice']),
         pushes: {
             dirt_block: true,
             ice_block: true,
@@ -3050,7 +3060,7 @@ const TILE_TYPES = {
         has_inventory: true,
         can_reveal_walls: true,  // XXX i think?
         movement_speed: 4,
-        ignores: new Set(['ice', 'ice_nw', 'ice_ne', 'ice_sw', 'ice_se']),
+        ignores: new Set(['ice', 'ice_nw', 'ice_ne', 'ice_sw', 'ice_se', 'cracked_ice']),
         pushes: {
             dirt_block: true,
             ice_block: true,