From 4244efa55d29d3fa20d5fcba3ada1f423f87ec52 Mon Sep 17 00:00:00 2001
From: mryouse
Date: Thu, 8 Jun 2023 22:11:32 -0400
Subject: bugfix (probably wrong): this *seems* to stop the offset issues on
 stack B, but I'm not sure why

---
 vm.d | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/vm.d b/vm.d
index 69a16dc..2287f87 100644
--- a/vm.d
+++ b/vm.d
@@ -93,8 +93,9 @@ class VM {
         if (offset >= this.bTop) {
             writefln("peekB() offset of %d greater than stack size %d", offset, this.bTop);
         }
-        return this.bStack[this.bTop - offset];
-        //return this.bStack[this.bTop - offset - 1];
+        //return this.bStack[this.bTop];
+        //return this.bStack[this.bTop - offset];
+        return this.bStack[this.bTop - offset - 1];
     }
 
     Value popB() {
@@ -275,6 +276,7 @@ class VM {
         }
         while (true) {
             if (DEBUG) {
+                writefln("          atop: %d, btop: %d", this.aTop, this.bTop);
                 writeln("          Stacks:");
                 write("          A> ");
                 for (int i = 0; i < this.aTop; i++) {
@@ -385,7 +387,7 @@ class VM {
                     //pushA(current.slots[current.frameStart + slot + 1]);
 
                     //pushA(this.current.slots[this.current.frameStart + slot]);
-                    pushA(this.peekB(this.bTop - (this.current.frameStart + slot)));
+                    pushA(this.peekB(this.bTop - (this.current.frameStart + slot) - 1));
                     break;
                 case OpCode.OP_SET_LOCAL:
                     ubyte slot = this.readByte();
-- 
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