add the wait command

drawing.py

@@ -113,7 +113,7 @@ class Window:
                     x += sx
                 SDL_RenderDrawPoint(self.r, x, y)
 
-    def wait(self):
+    def wait(self, allow_any=False):
         """Wait for the window to be closed."""
 
         if self.quiet:
@@ -125,6 +125,14 @@ class Window:
 
             if event.type == SDL_QUIT:
                 break
+            if event.type == SDL_KEYDOWN and allow_any:
+                break
+
+    def pause(self):
+        """Display a pause message."""
+
+        # TODO: Display "paused"
+        self.wait(allow_any=True)
 
     def save(self, out):
         """Save the output into a BMP file."""

interpreter.py

@@ -121,8 +121,13 @@ class Context:
             raise Exception("Style statement not supported yet x_x")
 
         elif n.type == N.WAIT:
-            # TODO: Display "paused" and wait for a key press to continue"
-            print("[interpreter] Delay ignored")
+            print("---- pause")
+            print(f"x={self.x} y={self.y} theta={self.angle}")
+            print(f"A={self.vars['A']} B={self.vars['B']}")
+            print(f"C={self.vars['C']} D={self.vars['D']}")
+            print(f"E={self.vars['E']} F={self.vars['F']}")
+            print(f"M={self.vars['M']}")
+            self.w.pause()
 
         # Flow control
 

parser.py

@@ -136,7 +136,7 @@ class Parser:
         if op.type == T.STYLE:
             return Node(N.STYLE, self.style())
         if op.type == T.WAIT:
-            return Node(N.WAIT, self.arg())
+            return Node(N.WAIT)
 
         # Flow control