Mercurial > mamba

changeset 225:af95fbc8ef5c

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Snakes should be impermeable. So now they are.
author Jeremy Thurgood <firxen@gmail.com>
date Wed, 14 Sep 2011 23:02:45 +0200
parents 0dfa3f52742b
children cd5377697c9e
files mamba/snake.py
diffstat 1 files changed, 10 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/mamba/snake.py	Wed Sep 14 22:43:37 2011 +0200
+++ b/mamba/snake.py	Wed Sep 14 23:02:45 2011 +0200
@@ -24,6 +24,7 @@
         self.speed = 120.0  # pixel / s
         self.frac_ds = 0.0
         self.mutation = None
+        self.coiled = True
 
     head = property(fget=lambda self: self.segments[0])
     tail = property(fget=lambda self: self.segments[-1])
@@ -72,6 +73,7 @@
             tile_state = self.head.get_tile_state()
             shifted, ds = self.head.shift_head(ds)
             if shifted:
+                self.coiled = False
                 self.head.shifted_tile()
             else:
                 break
@@ -87,6 +89,7 @@
             if not self.check_uturn():
                 self.head.set_orientation(self.orientation)
 
+        self.check_self_crash()
         for segment in self.segments:
             segment.shift_pixels(ds)
             world.interact(segment)
@@ -106,6 +109,13 @@
     def set_orientation(self, orientation):
         self.orientation = orientation
 
+    def check_self_crash(self):
+        if self.coiled:
+            return
+        collides = spritecollide(self.head, self.segment_group, False)
+        if [s for s in collides if s not in self.segments[:2]]:
+            self.crash()
+
     def crash(self):
         SnakeDiedEvent.post()