Day 17 - this is neither clean, not pretty, and I couldn't be bothered to do a more...

[advent-of-code-2020.git] / day17 / conwaycubes.py

diff --git a/day17/conwaycubes.py b/day17/conwaycubes.py
new file mode 100755 (executable)
index 0000000..77e1d4b
--- /dev/null
+++ b/day17/conwaycubes.py
@@ -0,0 +1,106 @@
+#!/usr/bin/python3
+
+import sys
+import copy
+
+cubemap={}
+start_z=0
+min_z=0
+max_z=0
+min_x=0
+max_x=0
+min_y=0
+max_y=0
+
+filename="p1_example.txt"
+if len(sys.argv) > 1:
+    filename=sys.argv[1]
+
+def print_map():
+    for z in [z for z in sorted([int(k) for k in cubemap.keys()])]:
+        print("z = ",z)
+        for y in [y for y in sorted([int(k) for k in cubemap[z].keys()])]:
+            print("".join([cubemap[z][y][x] for x in sorted([int(x) for x in cubemap[z][y].keys()])]))
+        print()
+
+def get_active_neighbours(x,y,z):
+    global cubemap
+    sum=0
+    for cur_z in range(z-1, z+2):
+        for cur_y in range(y-1, y+2):
+            for cur_x in range(x-1, x+2):
+                if x == cur_x and y == cur_y and z == cur_z:
+                    continue
+                else:
+                    if cur_z in cubemap:
+                        if cur_y in cubemap[cur_z]:
+                            if cur_x in cubemap[cur_z][cur_y]:
+                                if cubemap[cur_z][cur_y][cur_x] == "#":
+                                    sum+=1
+
+    #print("Location: {},{},{}, Active neighbours: {}".format(x,y,z,sum))
+
+    return sum
+
+def do_iteration():
+    global cubemap,min_x,max_x,min_y,max_y,min_z,max_z
+
+    min_x-=1
+    max_x+=1
+    min_y-=1
+    max_y+=1
+    min_z-=1
+    max_z+=1
+
+    new_cubemap=copy.deepcopy(cubemap)
+
+    for z in range(min_z, max_z+1):
+        for y in range(min_y, max_y+1):
+            for x in range(min_x, max_x+1):
+                active_neighbours=get_active_neighbours(x,y,z)
+                if not z in cubemap:
+                    new_cubemap[z]={}
+                    cubemap[z]={}
+                if not y in cubemap[z]:
+                    new_cubemap[z][y]={}
+                    cubemap[z][y]={}
+                if not x in cubemap[z][y]:
+                    new_cubemap[z][y][x]="."
+                    cubemap[z][y][x]="."
+                if cubemap[z][y][x] == "#" and active_neighbours != 2 and active_neighbours != 3:
+                    new_cubemap[z][y][x]="."
+                elif cubemap[z][y][x] == "." and active_neighbours == 3:
+                    new_cubemap[z][y][x]="#"
+
+    cubemap=new_cubemap
+
+# read the file
+z=0
+y=0
+cubemap[z]={}
+for line in open(filename, "r"):
+    line=line.rstrip()
+    cubemap[z][y]={}
+    x=0
+    for char in line:
+        cubemap[z][y][x]=char
+        x+=1
+    max_x=x-1
+    y+=1
+max_y=y-1
+
+print_map()
+
+for iteration in range(0,6):
+    print("Iteration:", iteration+1)
+    do_iteration()
+    #print_map()
+
+active=0
+for z in cubemap.keys():
+    for y in cubemap[z].keys():
+        for x in cubemap[z][y].keys():
+            if cubemap[z][y][x]=="#":
+                active+=1
+
+print("Active cubes:", active)