Drafted MOV.

diff --git a/mars.scm b/mars.scm
index 7dac46d..994a2b8 100644 (file)
--- a/mars.scm
+++ b/mars.scm
@@ -20,6 +20,14 @@
 (define ((make-instr opcode modifier A-mode A-num B-mode B-num name) . args)
   (match args
     (('copy n) (make-instr opcode modifier A-mode A-num B-mode B-num n))
+    (('copy-from! other n)
+     (set! opcode (other 'opcode))
+     (set! modifier (other 'modifier))
+     (set! A-mode (other 'A-mode))
+     (set! A-num (other 'A-num))
+     (set! B-mode (other 'B-mode))
+     (set! B-num (other 'B-num))
+     (set! name n))
     (('opcode) opcode)
     (('modifier) modifier)
     (('A-mode) A-mode)
@@ -126,6 +134,9 @@
 (define (make-player name ptr)
   (list name ptr))
 
+(define (player-name player) (car player))
+(define (player-ptrs player) (cdr player))
+
 (define (player-set-ptrs! player ptrs)
   (set-cdr! prog-queue ptrs))
 
@@ -141,14 +152,14 @@
     (let ((player (car players))
           (other-players (cdr players))
           (ptrs (player-ptrs player)))
-      (let ((new-ptrs (execute-instr (car ptrs))))
+      (let ((new-ptrs (execute-instr (car ptrs) (player-name player))))
         (if (null? new-ptrs)
             (run other-players (+ step 1))
             (begin
               (player-set-ptrs! (append (cdr ptrs) new-ptrs))
               (run (append other-players (list player)) (+ step 1)))))))))
 
-(define (execute-instr ptr)
+(define (execute-instr ptr name)
   (let* ((instr (core-get ptr))
          (A-pointer (eval-operand (instr 'A-mode) (instr 'A-num) ptr))
          (B-pointer (eval-operand (instr 'B-mode) (instr 'B-num) ptr))
@@ -157,12 +168,16 @@
       ((DAT) '()) ;Game over, man, game over!
       ((MOV)
        (case modifier
-         ((A))
-         ((B))
-         ((AB))
-         ((BA))
-         ((F))
-         ((X))))
+         ((A) ((core-get B-pointer) 'set-A-num! ((core-get A-pointer) 'A-num) name))
+         ((B) ((core-get B-pointer) 'set-B-num! ((core-get A-pointer) 'B-num) name))
+         ((AB) ((core-get B-pointer) 'set-B-num! ((core-get A-pointer) 'A-num) name))
+         ((BA) ((core-get B-pointer) 'set-A-num! ((core-get A-pointer) 'B-num) name))
+         ((F) ((core-get B-pointer) 'set-A-num! ((core-get A-pointer) 'A-num) name)
+              ((core-get B-pointer) 'set-B-num! ((core-get A-pointer) 'B-num) name))
+         ((X) ((core-get B-pointer) 'set-A-num! ((core-get A-pointer) 'B-num) name)
+              ((core-get B-pointer) 'set-B-num! ((core-get A-pointer) 'A-num) name))
+         ((I) ((core-get B-pointer) 'copy-from! (core-get A-pointer) name)))
+       (list (addr+ ptr 1)))
       ((ADD)
        (case modifier
          ((A))