1 files changed, 56 insertions, 0 deletions
diff --git a/isportal.py b/isportal.py
new file mode 100644
index 0000000..3e88968
--- /dev/null
+++ b/isportal.py
@@ -0,0 +1,56 @@
+from sorter import Sorter
+
+portals = Sorter()
+links = []
+lastportal = None #dim of last portal
+
+def conlast(cur):
+  global lastportal
+  ind = portals.index(cur)
+  if lastportal == None: #self-connect and set as lastportal
+    links[ind] = cur
+    lastportal = cur
+  else: #connect to last portal, connect last portal to self, and set lastportal as None
+    links[ind] = lastportal
+    links[portals.index(lastportal)] = cur
+    lastportal = None
+
+def isportal(dim):
+  if dim in portals:
+    return True
+  return False
+
+def link(dim):
+  return links[portals.index(dim)]
+
+def unlink(dim): #remove portal from main list, and update the link of its pair
+  global lastportal
+  plink = links[portals.index(dim)]
+  if plink != dim:
+    conlast(plink)
+  else:
+    if dim == lastportal:
+      lastportal = None
+
+def modportal(dim):
+  if dim in portals: #remove portal
+    unlink(dim)
+    links.pop(portals.remove(dim))
+  else: #add portal
+    links.insert(portals.insert(dim),())
+    conlast(dim)
+
+def load(data):
+  lastportal = None if data[0] == 'None' else int(data[0])
+  portals = Sorter()
+  links = []
+  for line in data[1:]:
+    line = [int(num) for num in line.split(' ')]
+    ind = portals.insert((line[0],line[1]))
+    links.insert(ind, (line[2], line[3]))
+
+def save():
+  outtext = str(lastportal) + '\n'
+  for portalind in range(len(portals)):
+    outtext += str(portals[portalind][0]) + ' ' + str(portals[portalind][1]) + ' ' + str(links[portalind][0]) + ' ' + str(links[portalind][1]) + '\n'
+  return outtext