From 9939249066befd6534a57a326b742e415bd59b15 Mon Sep 17 00:00:00 2001
From: salmonik <salmonik@tuta.io>
Date: Sat, 11 Jul 2026 15:48:39 +0200
Subject: add floor transition: Space on exit descends to next depth

---
 src/game.rs | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

(limited to 'src/game.rs')

diff --git a/src/game.rs b/src/game.rs
index 992023e..1c13dd4 100644
--- a/src/game.rs
+++ b/src/game.rs
@@ -1585,10 +1585,32 @@ impl Game {
 
     // ---- misc -------------------------------------------------------------
 
-    pub fn check_win(&self) -> bool {
+    /// True when the player is standing on the exit staircase.
+    pub fn on_exit(&self) -> bool {
         self.maze.is_exit(self.player.x, self.player.y)
     }
 
+    /// Descend to the next dungeon depth.  Generates a new maze, places the
+    /// player in a starting room facing east.  All stats, inventory, and
+    /// weapon carry over.
+    pub fn descend(&mut self) {
+        self.depth += 1;
+        let mut rng = rand::rng();
+        let (maze, (start_x, start_y)) = Maze::generate(self.depth, &mut rng);
+        self.maze = maze;
+        self.player = Player::new(start_x, start_y, 0.0); // facing east
+        self.wall_texture = crate::texture::generate_wall_texture(&mut rng);
+        self.floor_texture = crate::texture::generate_floor_texture(&mut rng);
+        self.exit_texture = crate::texture::generate_exit_texture(&mut rng);
+        self.state = GameState::WaitingForInput;
+        self.moving = false;
+        self.turning = false;
+        self.attacking = false;
+        self.enemy_moves.clear();
+        self.acted_this_turn.clear();
+        self.set_message(&format!("You descend to depth {}...", self.depth));
+    }
+
     /// Whole heartbeats elapsed (displayed in HUD).
     pub fn heartbeats(&self) -> usize {
         self.heartbeat_count as usize
-- 
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