4 files changed, 56 insertions, 31 deletions
diff --git a/19/py/21-1.js b/19/py/21-1.js
new file mode 100644
index 0000000..050352c
--- /dev/null
+++ b/19/py/21-1.js
@@ -0,0 +1,10 @@
+// A or B or C:
+// There is a gap somewhere in the next 3 tiles so we need to jump
+or A T
+and B T
+and C T
+not T J
+// . and D
+// We don't die if we jump
+and D J
+walk
diff --git a/19/py/21-2.js b/19/py/21-2.js
new file mode 100644
index 0000000..5f65fa1
--- /dev/null
+++ b/19/py/21-2.js
@@ -0,0 +1,23 @@
+// A or B or C:
+// There is a gap somewhere in the next 3 tiles so we need to jump
+or A T
+and B T
+and C T
+not T J
+// . and D
+// We don't die if we jump
+and D J
+// (postfix)
+// . and (H or EI or EF)
+//   H : We can immediatly jump again
+//   EI: We can walk one step and then jump again
+//   EF: We can walk two steps (and then potentially jump again)
+// We don't have any information about tiles after I so we ignore and hope for
+// the best
+not F T
+not T T
+or I T
+and E T
+or H T
+and T J
+run
diff --git a/19/py/21.js b/19/py/21.js
deleted file mode 100644
index 7267d45..0000000
--- a/19/py/21.js
+++ /dev/null
@@ -1,14 +0,0 @@
-# part1
-or A T
-and B T
-and C T
-not T J
-and D J
-# part2
-not F T
-not T T
-or I T
-and E T
-or H T
-and T J
-run
diff --git a/19/py/d21.py b/19/py/d21.py
index b4ad1eb..84f01ff 100644
--- a/19/py/d21.py
+++ b/19/py/d21.py
@@ -1,10 +1,5 @@
 import intcode
 
-f = open("../input/21", "r").readlines()
-
-c = intcode.Computer([int(x) for x in f[0].split(",")], ascii=True)
-output = []
-
 def ascii_draw(a):
     s = ""
     for c in a:
@@ -16,16 +11,27 @@ def ascii_draw(a):
             print("[INVALID ASCII]", c)
     return s
 
-jumpscript = open("21.js", "r").readlines()
-for line in jumpscript:
-    if line[0] != "#":
-        c.queue_ascii(line.strip().upper())
-        print(line.strip().upper())
+def do(c, jumpscript):
+    output = []
+    for line in jumpscript:
+        if line[:2] != "//":
+            c.queue_ascii(line.strip().upper())
+    while not c.SIG_HALT:
+        c.step()
+        if c.SIG_OUTPUT:
+            output.append(c.output)
+            c.output = None
+    return ascii_draw(output)
+
+def pt1(input):
+    c = intcode.Computer([int(x) for x in input[0].split(",")], ascii=True)
+    return do(c, open("21-1.js", "r").readlines())
+
+def pt2(input):
+    c = intcode.Computer([int(x) for x in input[0].split(",")], ascii=True)
+    return do(c, open("21-2.js", "r").readlines())
 
-while not c.SIG_HALT:
-    c.step()
-    if c.SIG_OUTPUT:
-        output.append(c.output)
-        c.output = None
-print(output)
-print(ascii_draw(output))
+if __name__ == "__main__":
+    input = open("../input/21", "r").readlines()
+    print(pt1(input))
+    print(pt2(input))