From 23ea7ff67fcd0ba96e5de61809825aa7d628e0ee Mon Sep 17 00:00:00 2001
From: DualFroz <me@dualfroz.com>
Date: Sun, 23 Aug 2026 14:28:00 +0200
Subject: [PATCH] feat(core): add tile registry and terrain properties

---
 src/tiles.lua | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 src/tiles.lua

diff --git a/src/tiles.lua b/src/tiles.lua
new file mode 100644
index 0000000..9a5fa42
--- /dev/null
+++ b/src/tiles.lua
@@ -0,0 +1,53 @@
+-- Central registry of tile glyphs and their terrain properties. Every module
+-- that needs to know whether a cell can be stood on, blocks sight, or is a door
+-- consults this table instead of hardcoding glyph comparisons.
+
+local Tiles = {}
+
+Tiles.WALL = "#"
+Tiles.FLOOR = "."
+Tiles.STAIRS_DOWN = ">"
+Tiles.STAIRS_UP = "<"
+Tiles.DOOR_CLOSED = "+"
+Tiles.DOOR_OPEN = "'"
+Tiles.DOOR_LOCKED = "x"
+Tiles.TRAP = "^"
+Tiles.WATER = "~"
+Tiles.RUBBLE = ":"
+
+local props = {
+  [Tiles.WALL]        = { walkable = false, blocksSight = true,  door = false },
+  [Tiles.FLOOR]       = { walkable = true,  blocksSight = false, door = false },
+  [Tiles.STAIRS_DOWN] = { walkable = true,  blocksSight = false, door = false },
+  [Tiles.STAIRS_UP]   = { walkable = true,  blocksSight = false, door = false },
+  [Tiles.DOOR_CLOSED] = { walkable = false, blocksSight = true,  door = true },
+  [Tiles.DOOR_LOCKED] = { walkable = false, blocksSight = true,  door = true, locked = true },
+  [Tiles.DOOR_OPEN]   = { walkable = true,  blocksSight = false, door = true },
+  [Tiles.TRAP]        = { walkable = true,  blocksSight = false, door = false },
+  [Tiles.WATER]       = { walkable = true,  blocksSight = false, door = false },
+  [Tiles.RUBBLE]      = { walkable = true,  blocksSight = false, door = false },
+}
+
+local wallProps = props[Tiles.WALL]
+
+function Tiles.of(glyph)
+  return props[glyph] or wallProps
+end
+
+function Tiles.isWalkable(glyph)
+  return Tiles.of(glyph).walkable
+end
+
+function Tiles.blocksSight(glyph)
+  return Tiles.of(glyph).blocksSight
+end
+
+function Tiles.isDoor(glyph)
+  return Tiles.of(glyph).door
+end
+
+function Tiles.isClosedDoor(glyph)
+  return glyph == Tiles.DOOR_CLOSED or glyph == Tiles.DOOR_LOCKED
+end
+
+return Tiles