From a0b34217b49f3d8d6436045d2a502f5e08642396 Mon Sep 17 00:00:00 2001
From: "Eevee (Evelyn Woods)" <eevee.git@veekun.com>
Date: Thu, 24 Dec 2020 09:44:29 -0700
Subject: [PATCH] Implement the goofy CC2 "open trap" tile

---
 js/format-c2g.js | 14 ++++++++++++--
 js/tiletypes.js  |  9 +++++----
 2 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/js/format-c2g.js b/js/format-c2g.js
index 4b8d2bc..dbd4c6a 100644
--- a/js/format-c2g.js
+++ b/js/format-c2g.js
@@ -358,8 +358,18 @@ const TILE_ENCODING = {
         has_next: true,
     },
     0x41: {
-        // FIXME cc2lp1 uses this, i don't know what it actually does
-        error: "Open trap is not yet implemented!",
+        name: 'trap',
+        // Not actually a modifier, just using this for hax
+        // FIXME round-trip this, maybe expose it in the editor (sigh)
+        modifier: {
+            dummy: true,
+            decode(tile, mod) {
+                tile._initially_open = true;
+            },
+            encode(tile) {
+                return 0;
+            },
+        },
     },
     0x42: {
         name: 'trap',
diff --git a/js/tiletypes.js b/js/tiletypes.js
index 0ef171e..3d50de7 100644
--- a/js/tiletypes.js
+++ b/js/tiletypes.js
@@ -782,8 +782,6 @@ const TILE_TYPES = {
     },
     slime: {
         draw_layer: DRAW_LAYERS.terrain,
-        // FIXME kills everything except ghosts, blobs, blocks
-        // FIXME blobs spread slime onto floor tiles, even destroying wiring
         on_arrive(me, level, other) {
             if (other.type.name === 'dirt_block' || other.type.name === 'ice_block') {
                 level.transmute_tile(me, 'floor');
@@ -1085,10 +1083,13 @@ const TILE_TYPES = {
         },
         remove_press(me, level) {
             level._set_tile_prop(me, 'presses', me.presses - 1);
+            if (me._initially_open) {
+                level._set_tile_prop(me, '_initially_open', false);
+            }
         },
         // FIXME also doesn't trap ghosts, is that a special case???
         traps(me, actor) {
-            return ! me.presses;
+            return ! me.presses && ! me._initially_open && actor.type.name !== 'ghost';
         },
         on_power(me, level) {
             // Treat being powered or not as an extra kind of brown button press
@@ -1098,7 +1099,7 @@ const TILE_TYPES = {
             me.type.remove_press(me, level);
         },
         visual_state(me) {
-            if (me && me.presses) {
+            if (me && (me.presses || me._initially_open)) {
                 return 'open';
             }
             else {