Rearrange rec check state

src/machine.rs

@@ -392,32 +392,34 @@ pub fn quick_term_or_rec(
     let mut reset = 1;
 
     for cycle in 1..sim_lim {
-        if reset == 0 {
-            ref_state = state;
-            ref_tape = tape.clone();
-            let head = ref_tape.head;
-            leftmost = head;
-            rightmost = head;
-            reset = cycle;
-        }
-
-        reset -= 1;
-
         let Some(&(color, shift, next_state)) =
             comp.get(&(state, tape.scan()))
         else {
             return drop_halt;
         };
 
-        let same = state == next_state;
+        let curr_state = state;
+
+        state = next_state;
+
+        let same = curr_state == next_state;
 
         if same && tape.at_edge(shift) {
             return true;
         }
 
-        tape.step(shift, color, same);
+        if reset == 0 {
+            ref_state = curr_state;
+            ref_tape = tape.clone();
+            let head = ref_tape.head;
+            leftmost = head;
+            rightmost = head;
+            reset = cycle;
+        }
 
-        state = next_state;
+        reset -= 1;
+
+        tape.step(shift, color, same);
 
         let curr = tape.head;