From: Lukas Krickl <lukas@krickl.dev>
Date: Thu, 27 Feb 2025 19:50:32 +0000 (+0100)
Subject: actor/player: Added basic cursor tile
X-Git-Url: https://git.krickl.dev/?a=commitdiff_plain;h=cd9cb2cac7bcc7cbc7c6f9116257e47dc72bafac;p=gbrg%2F.git

actor/player: Added basic cursor tile

This tile indicate which actor is currently moving.
---

diff --git a/src/actor.s b/src/actor.s
index 2a1d4b7..6026260 100644
--- a/src/actor.s
+++ b/src/actor.s
@@ -270,6 +270,7 @@ actor_update_null:
   ; bat actor 
 actor_update_bat:
   actor_check_who
+  call z, draw_cursor
   jr nz, @skip REL
 
   ; call state update
@@ -432,6 +433,40 @@ anim_clear:
   ld [anim_target_x], a
   ret
 
+  ; draws cursor at the active actor's location 
+  ; inputs:
+  ;  bc: actor_ptr 
+draw_cursor:
+  push_all
+
+  inc bc
+  ld a, [bc]
+  ld d, a ; d = y
+  inc bc
+  ld a, [bc]
+  ld e, a ; e = x
+
+@draw:
+  ; draw obj 
+  ld hl, PLAYER_SPRITE1+12
+  ld a, d ; a = y 
+  add a, OBJ_OFF_Y
+  ld [hl+], a
+
+  ld a, e ; a = x
+  add a, OBJ_OFF_X
+  ld [hl+], a
+
+  ld a, CURSOR_TILE
+  ld [hl+], a
+
+  xor a, a
+  ld [hl], a
+
+  pop_all
+
+  ret
+
   ; advance to the next actor if end_turn != 0
   ; effectively ending the current actor's turn
 who_next:
diff --git a/src/player.s b/src/player.s
index fdf3c42..a47cd3d 100644
--- a/src/player.s
+++ b/src/player.s
@@ -1,6 +1,8 @@
 ; player gets 3 sprite slots in a row
 .def int PLAYER_SPRITE1 = shadow_oam + 0
 
+.def int CURSOR_TILE = 0x04
+
 .def int PLAYER_TILE_IDLE1 = 0x00
 .def int PLAYER_TILE_IDLE2 = 0x12
 
@@ -51,6 +53,15 @@ player_init:
 
   ret
 
+player_draw_cursor:
+  push hl
+  push hl
+  pop bc
+  dec bc ; bc = fake player actor 
+  call draw_cursor
+  pop hl
+  ret
+
   ; update the player 
   ; players do not behave like regular actors
   ; and are not allocate to the regular 
@@ -61,6 +72,7 @@ player_update:
   ; update
   ld a, [who]
   cp a, WHO_PLAYER
+  call z, player_draw_cursor
   jp nz, @skip_input 
   
   ; call state update
diff --git a/tiles/tileset0.inc b/tiles/tileset0.inc
index 12d1cf6..c4b76c7 100644
--- a/tiles/tileset0.inc
+++ b/tiles/tileset0.inc
@@ -35,12 +35,12 @@
 .chr 00003333
 .chr 00000000
 ; tile 4
-.chr 00000000
-.chr 00000000
-.chr 00000000
-.chr 00000000
-.chr 00000000
-.chr 00000000
+.chr 11111100
+.chr 13333300
+.chr 13333300
+.chr 13300000
+.chr 13300000
+.chr 13300000
 .chr 00000000
 .chr 00000000
 ; tile 5