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#
# This script uses RaspberryJamMod's ability to capture all hits, not just sword hits, to provide symmetric
# drawing. Stand at the center of symmetry. By default, you get north-south and east-west mirroring, but you
# can include other transformations on the commandline:
#
# n : northsouth flip
# e : east west flip
# u : up down flip
# nw : nw - se flip
# ne : ne - sw flip
#
# 90 : 90, 180 and 270 degrees in the plane
# 180 : 180 degrees in the plane
#
# You can do translational symmetry with:
# t N x y z : translate N-1 times by vector (x,y,z)
#
# The transformations are combined in a complicated fashion to generate the list of all applied transformations.
# Effectively this works like this:
# 1. The group generated by all the rotations and flips is put into the list.
# 2. For each translational symmetry "t N x y z", the list is updated as follows: For each transformation F on the list
# so far, the N-1 transformations lambda (x1,y1,z1) : F(x1,y1,z1) + (kx,ky,kz) are added to the list, for k from 1 to N-1.
# 3. The identity transformation is removed.
#
# Then whenever you draw or erase a block, all the transforms of that block location are are also drawn or erased.
#
# For instance, specifying n e t 10 0 1 0 will do north-south and east-west mirroring, plus raising up pillars 10 high on
# top of whatever you draw. On the other hand, doing t 10 1 0 0 t 10 0 1 0 t 10 0 0 1 will draw 10x10x10 cubes wherever you
# draw.
#
#
# Code by Alexander Pruss under MIT license.
#
from mcpi.minecraft import Minecraft
import mcpi.block as block
from functools import partial
import sys
import time
xn = ( (1,0,0),
(0,1,0),
(0,0,-1) )
xe = ( (-1,0,0),
(0,1,0),
(0,0,1) )
xu = ( (1,0,0),
(0,-1,0),
(0,0,-1) )
xnw = ( (0,0,-1),
(0,1,0),
(-1,0,0) )
xne = ( (0,0,1),
(0,1,0),
(1,0,0 ) )
x90 = ( (0,0,1),
(0,1,0),
(-1,0,0) )
xid = ( (1,0,0),
(0,1,0),
(0,0,1) )
faces = ( (0,-1,0), (0,1,0), (0,0,-1), (0,0,1), (-1,0,0), (1,0,0), (0,0,0) )
def mulMat(a,b):
return tuple(tuple(a[i][0]*b[0][j]+a[i][1]*b[1][j]+a[i][2]*b[2][j] for j in range(3)) for i in range(3))
def mulMatVec(a,b):
return tuple(a[i][0]*b[0]+a[i][1]*b[1]+a[i][2]*b[2] for i in range(3))
def subVec(a,b):
return tuple(a[i]-b[i] for i in range(3))
def addVec(a,b):
return tuple(a[i]+b[i] for i in range(3))
x180 = mulMat(x90,x90)
if __name__ == "__main__":
def copy(v,airOnly=False):
b = mc.getBlockWithNBT(v)
if airOnly and b.id != block.AIR.id:
return
v1 = addVec(v,(0.5,0.5,0.5))
for t in transforms:
mc.setBlockWithNBT(t(v1),b)
def err():
mc.postToChat("Invalid symmetry specification. See symmetry.py comments.")
exit()
mc = Minecraft()
playerPos = mc.player.getPos()
matrices = set()
translations = []
if len(sys.argv) <= 1:
matrices.add(xn)
matrices.add(xe)
i = 1
while i < len(sys.argv):
opt = sys.argv[i]
i += 1
if opt == 't':
if len(sys.argv) <= i + 3:
err()
translations.append((int(sys.argv[i]), float(sys.argv[i+1]), float(sys.argv[i+2]), float(sys.argv[i+3])))
i += 4
elif opt == 'n':
matrices.add(xn)
elif opt == 'e':
matrices.add(xe)
elif opt == 'u':
matrices.add(xu)
elif opt == 'nw':
matrices.add(xnw)
elif opt == 'ne':
matrices.add(xne)
elif opt == '90':
matrices.add(x90)
elif opt == '180':
matrices.add(x180)
matrices.add(xid)
old = set()
while len(old) < len(matrices):
old = matrices
matrices = set()
for a in old:
for b in old:
matrices.add(mulMat(a,b))
matrices.remove(xid)
transforms = []
matrixApply = lambda v,mat : addVec(mulMatVec(mat,subVec(v,center)),center)
for m in matrices:
transforms.append(partial(matrixApply, mat=m))
for t in translations:
add = []
for k in range(1,t[0]):
delta = (t[1]*k,t[2]*k,t[3]*k)
f = partial(addVec,b=delta)
add.append(f)
for g in transforms:
add.append(lambda v,f=f,g=g : f(g(v)))
transforms += add
center = tuple(0.5 * round(2 * x) for x in playerPos)
# if (len(matrices) > 0):
# mc.conn.send("world.spawnParticle", "footstep", center, 0.0,0.0,0.0, 0, 1)
mc.conn.send("events.setting","restrict_to_sword",0)
mc.conn.send("events.setting","detect_left_click",1)
mc.postToChat("Will be drawing {} copies".format(1+len(transforms)))
mc.events.clearAll()
while True:
hits = mc.events.pollBlockHits()
time.sleep(0.25)
for h in hits:
v = tuple(x for x in h.pos)
copy(v,airOnly=True)
copy(addVec(v,faces[h.face]))
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