From: Lukas Krickl <lukas@krickl.dev>
Date: Sun, 15 Dec 2024 18:41:27 +0000 (+0100)
Subject: Added notes for room transitions
X-Git-Url: https://git.krickl.dev/?a=commitdiff_plain;h=6ce1ffecc3f4de3dfffa832402d64b8e3665e68e;p=gbrg%2F.git

Added notes for room transitions
---

diff --git a/TODO.md b/TODO.md
index 25a1624..64a9e5e 100644
--- a/TODO.md
+++ b/TODO.md
@@ -23,3 +23,11 @@
 - If direction is already taken, try again
 - If it fails after 4 tries advance to a new room and try again
 - Do this until all rooms are filled
+
+## Room transition
+
+When a player hits the edge of the map a room transition should start.
+A player can either go north, west, east or south. 
+The target room of a transition should be stored in a room exit table.
+When a transition happens the state of the previous room should be written back to sram (e.g. actor table).
+If possible make the animation smooth instead of simply blanking the screen.
diff --git a/src/map.s b/src/map.s
index 9ccc926..4233cf4 100644
--- a/src/map.s
+++ b/src/map.s
@@ -49,6 +49,13 @@ room_load_from:
   call room_load_actors
   ret
 
+  ; calls rom goto based on player position
+  ; inputs:
+  ;   curr_room_exits: ptr to exits table
+  ;   player_x/y: player position
+room_goto_player_pos:
+  ld a, NORTH
+
   ; transitions to a new room 
   ; that is part of the map:
   ; inputs:
@@ -307,7 +314,7 @@ room_get_flag_masked:
 
   ; exit table for empty exits 
 room_empty_exits:
-.db 0x00, 0x00
-.db 0x00, 0x00
-.db 0x00, 0x00
-.db 0x00, 0x00
+dw base_room_struct 
+dw base_room_struct 
+dw base_room_struct 
+dw base_room_struct