From: Lukas Krickl <lukas@krickl.dev>
Date: Sun, 20 Apr 2025 18:12:00 +0000 (+0200)
Subject: cells: Added update loop
X-Git-Url: https://git.krickl.dev/?a=commitdiff_plain;h=36a79b2999c9226bc28744c5d8a9036a4aba28b3;p=gbrg%2F.git

cells: Added update loop

The simulation update loop currently updates all cells in a single
frame.
This is way too slow and will need to be split up.
---

diff --git a/src/cells.s b/src/cells.s
index 84f8ca2..afffd51 100644
--- a/src/cells.s
+++ b/src/cells.s
@@ -9,7 +9,7 @@ cell_update:
   ld a, [de] ; a = head offset
   and a, CF_HEAD
   ; if not head cell return
-  ret nz
+  ret z
 
   ; save cell ptr
   dec de ; de is c_type
@@ -44,9 +44,9 @@ cell_update:
   ; de = c_st_routine 
 
   ; store next routine 
-  ld a, b
-  ld [de], a
   ld a, c
+  ld [de], a
+  ld a, b
   inc de
   ld [de], a
 
diff --git a/src/macros.inc b/src/macros.inc
index 0703018..a4f6367 100644
--- a/src/macros.inc
+++ b/src/macros.inc
@@ -36,7 +36,7 @@
 #define NEGATE -1 & 0xFF
 
 #define LO & 0xFF
-#define HI >> 4 & 0xFF
+#define HI >> 8 & 0xFF
 
 #macro dblo 
 .db $1 & 0xFF
diff --git a/src/update.s b/src/update.s
index 2e6c2d5..422383a 100644
--- a/src/update.s
+++ b/src/update.s
@@ -9,7 +9,7 @@ update_game:
   ld de, actor_player 
   call st_update
 
-  ; call sim_update 
+  call sim_update 
 
   ldnull bc
   ret