From cf71f9e08ab8b7dfaef12be031c43af8be97e865 Mon Sep 17 00:00:00 2001
From: Lukas Krickl <lukas@krickl.dev>
Date: Thu, 31 Jul 2025 14:15:13 +0200
Subject: [PATCH] player: Added special flag that indicates if a player is
 inside a covered area (e.g. inside a room)

---
 src/defs.s   |  7 +++++++
 src/player.s | 14 ++++++++++++++
 src/wram.s   |  4 ++++
 3 files changed, 25 insertions(+)

diff --git a/src/defs.s b/src/defs.s
index ce51a5f..1bea292 100644
--- a/src/defs.s
+++ b/src/defs.s
@@ -64,6 +64,7 @@
   ; when units want to draw
 .de DRAWF_SKIP_UNIT_OBJS, 1
 
+
   ; gameplay flags
 .se 1
 
@@ -82,6 +83,12 @@
 	; so that objects are behind the tile
 .de CF_COVERED, 8
 
+	; player special flags
+	; set if player is currently on a covered tile.
+	; this can be used for drawing units that 
+	; are inside
+.def int PLAYERSF_CF_COVERED = CF_COVERED
+
   ; cells struct
 .se 0
 .de c_tile, 1
diff --git a/src/player.s b/src/player.s
index de93ec5..5a8e8c9 100644
--- a/src/player.s
+++ b/src/player.s
@@ -24,6 +24,20 @@ unit_player_update:
   or a, OAM_FXFLIP 
   ld [hl], a
   pop de
+
+	; check if the player is currently
+	; on a convered tile or not
+	push de
+	call unit_get_pos
+	call map_get_tile
+	; a = tile flags
+	and a, CF_COVERED
+	ld b, a
+	ld a, [player_rt_special_flags]
+	and a, (~CF_COVERED) & 0xFF
+	or a, b
+	ld [player_rt_special_flags], a
+	pop de
   
   ; check for exit flags
   push de
diff --git a/src/wram.s b/src/wram.s
index cd7e7dd..795d53f 100644
--- a/src/wram.s
+++ b/src/wram.s
@@ -46,6 +46,9 @@ menu_cursor_index: .adv 1
 
 draw_flags: .adv 1
 gameplay_flags: .adv 1
+
+	; special flags that are set by the player unit
+player_rt_special_flags: .adv 1
   
   ; shadow UI is a buffer for drawing the UI
   ; this UI is then re-drawn on request in vblank
@@ -140,6 +143,7 @@ player_eq_amulet: .adv 2
 player_unit: .adv 0 
 p0_units: .adv act_size * UNITS_MAX 
 
+
   ; list of seeds used 
   ; for the current maps
   ; fill using mapgen_seed
-- 
2.30.2