Fix jobstate bugs

utils.py

@@ -1,5 +1,5 @@
 import importlib
-from math import floor, ceil
+from math import floor, ceil, sqrt, hypot
 
 import blocks
 importlib.reload(blocks)
@@ -31,6 +31,38 @@ def cap(x, amount):
     sign = 1 if x >= 0 else -1
     return sign * min(abs(x), amount)
 
+def spiral(n):
+    # return x, 0, z coords along a spiral at step n
+    # I forget where I found this
+    n += 1
+    k = ceil((sqrt(n)-1)/2)
+    t = 2 * k + 1
+    m = t**2
+    t = t - 1
+    if n >= m-t:
+        return k-(m-n), 0, -k
+    else:
+        m = m-t
+    if n >= m-t:
+        return -k, 0, -k+(m-n)
+    else:
+        m = m-t
+    if n >= m-t:
+        return -k+(m-n), 0, k
+    else:
+        return k, 0, k-(m-n-t)
+
+def alternate(n, amount):
+    # return 0, y, 0 where y alternates +/- by amount
+    # example: 0, 2, -2, 4, -4, 6, -6 for amount = 2
+    sign = 1 if n % 2 else -1
+    return (0, ceil(n/2) * sign * amount, 0)
+
+def diffrange(n):
+    # same as range(n+1) but can go negative
+    sign = 1 if n >= 0 else -1
+    return range(0, n+sign, sign)
+
 def break_time(block_id, held_item=0, in_water=False, on_ground=True, enchantments=[], effects={}):
     # from PrismarineJS/prismarine-block
     data = blocks.get(block_id)