added sell-item method to player

1 files changed, 14 insertions, 3 deletions

diff --git a/src/player.lisp b/src/player.lisp
index d497fed..394cee9 100644
--- a/src/player.lisp
+++ b/src/player.lisp
@@ -5,7 +5,8 @@
 		   :get-cash
 		   :get-debt
 		   :repay-debt
-		   :buy-item))
+		   :buy-item
+		   :sell-item))
 
 (in-package :player)
 
@@ -33,11 +34,11 @@
 				 :debt debt))
 
 (defmethod get-debt ((p player))
-  (with-slots (debt) player
+  (with-slots (debt) p
 	debt))
 
 (defmethod get-cash ((p player))
-  (with-slots (cash) player
+  (with-slots (cash) p
 	cash))
 
 (defmethod buy-item ((p player) item quantity)
@@ -50,6 +51,16 @@
 		  (setq cash (- cash cost))
 		  t)))))
 
+(defmethod sell-item ((p player) item amount)
+  (with-slots (stock cash) p
+	(let ((stocked-item
+		   (inventory:remove-item stock
+								  (commodities:name item) amount)))
+	  (when stocked-item
+	    (setq cash
+			  (+ cash (* (cdr stocked-item)
+						 (commodities:price item))))))))
+
 (defmethod repay-debt ((p player) amount)
   (with-slots (debt cash) p
 	(when (and (<= amount debt)