From: Lukas Krickl <lukas@krickl.dev>
Date: Sat, 5 Jul 2025 07:12:16 +0000 (+0200)
Subject: exits: Added position adjust for player
X-Git-Url: https://git.krickl.dev/?a=commitdiff_plain;h=15dfff7bea5537bdffd85b4c2e214e227765148c;p=gbrg%2F.git

exits: Added position adjust for player
---

diff --git a/src/defs.s b/src/defs.s
index dd648a2..bcb70d1 100644
--- a/src/defs.s
+++ b/src/defs.s
@@ -291,8 +291,10 @@
   ; if these flags are set goto_y and
   ; goto_x are treated as relative offsets
   ; instead of absolute tile positions
-.de MAP_EXITF_GOTOY_REL, 1
-.de MAP_EXITF_GOTOX_REL, 2
+.de EXITF_GOTOY_REL, 1
+.de EXITF_GOTOX_REL, 2
+
+.def int EXITF_GOTOXY_REL = EXITF_GOTOY_REL | EXITF_GOTOX_REL
 
   ; map exit table entry struct
 .se 0
diff --git a/src/exittables.s b/src/exittables.s
index 9dd9314..ff0aec1 100644
--- a/src/exittables.s
+++ b/src/exittables.s
@@ -1,3 +1,3 @@
 default_map_exit_table:
-exit_def 0, BTNRIGHT, 0, 0, default_map_header 
+exit_def EXITF_GOTOXY_REL, BTNRIGHT, 0, -15, default_map_header 
 exit_def 0, 0, 0, 0, default_map_header 
diff --git a/src/player.s b/src/player.s
index 839766f..7c44bd0 100644
--- a/src/player.s
+++ b/src/player.s
@@ -115,10 +115,66 @@ unit_check_exit_hit:
   ld l, a ; hl = map header ptr
   call map_load 
 
-  pop hl
-  ; TODO
+  pop bc ; bc = exit table now 
   ; finally adjust player position
+  
+  ; hl = player
+  ld hl, player_unit 
+  ld de, act_pos_y
+  add hl, de ; hl = y pos
+  
+  ; adjust y position
+  ld a, [bc]
+  and a, EXITF_GOTOY_REL
+  
+  inc bc 
+  inc bc ; bc = y adjust
+  ld a, [bc]
+  dec bc
+  dec bc
+  call z, map_exit_absolute_adjust
+  call nz, map_exit_relative_adjust
+  
+  inc hl ; hl = x pos
+
+  ; adjust x position
+  ld a, [bc]
+  and a, EXITF_GOTOX_REL
+  
+  inc bc 
+  inc bc
+  inc bc ; bc = x adjust
+  ld a, [bc]
+  call z, map_exit_absolute_adjust
+  call nz, map_exit_relative_adjust
+
+  ret
+
+  ; adjusts player position to aboslute
+  ; position
+  ; inputs:
+  ;   hl: player_y or player_x
+  ;    a: new y or new x
+  ; preserves all registers and flags
+map_exit_absolute_adjust:
+  ld [hl], a 
+  ret
+
+  ; adjusts player position by a relative  
+  ; position offset
+  ; inputs:
+  ;   hl: player_y or player_x
+  ;    a: new y or new x
+  ; preserves all registers and flags
+map_exit_relative_adjust:
+  push_all
+
+  ld b, a
+  ld a, [hl]
+  add a, b
+  ld [hl], a
 
+  pop_all
   ret