From: Neil <neil@dip.sun.ac.za>
Date: Sat, 20 Apr 2013 10:22:14 +0000 (+0200)
Subject: Avoid a infinite loop when scrolling is involved
X-Git-Url: https://git.ctpug.org.za/?a=commitdiff_plain;h=f05ea56092899055d0c96e8f3a2eb7a1c74b5c84;p=erdslangetjie.git

Avoid a infinite loop when scrolling is involved
---

diff --git a/erdslangetjie/__main__.py b/erdslangetjie/__main__.py
index 8071d30..e408ac8 100644
--- a/erdslangetjie/__main__.py
+++ b/erdslangetjie/__main__.py
@@ -126,15 +126,28 @@ class GameWindow(RelativeLayout):
                 if true_point[0] >= self.view.size[0]:
                     self.view.scroll_x += self.x_scroll_margin
                     true_point = self.to_parent(*check_point)
+                    # Avoid an infinite loop that can happen we
+                    # changing screens
+                    if self.view.scroll_x > 0.99:
+                        return
                 elif true_point[0] < 0:
                     self.view.scroll_x -= self.x_scroll_margin
                     true_point = self.to_parent(*check_point)
+                    # See above
+                    if self.view.scroll_x < 0.01:
+                        return
                 elif true_point[1] >= self.view.size[1]:
                     self.view.scroll_y += self.y_scroll_margin
                     true_point = self.to_parent(*check_point)
+                    # See above
+                    if self.view.scroll_y > 0.99:
+                        return
                 elif true_point[1] < 0:
                     self.view.scroll_y -= self.y_scroll_margin
                     true_point = self.to_parent(*check_point)
+                    # See above
+                    if self.view.scroll_y < 0.01:
+                        return
 
     def included(self, point, margin):
         if point[0] < margin: