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annotate python/safe.py @ 12:1e42c0147a49

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minutor changed file format for minecraft 1.18
author Henry S. Thompson <ht@inf.ed.ac.uk>
date Sat, 11 Dec 2021 16:30:29 -0500
parents e411408d64ec
children 1cd5c7952aaa
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1 #!/usr/bin/python3
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2 '''Find a safe landing space (i.e. in air, not above lava) near a cluster'''
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3 import sys, math
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4
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5 from util import *
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6 from bisect import insort
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7
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8 def usage():
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9 print("""Usage: safe.py [-d n] [filename]
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10 n is maximum distance of landing to some point in the cluster, default is 10.
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11
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12 Feed stdin with lines from the output of cluster.py, having produced
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13 air.tsv with the same settings as the cluster input, and lava.tsv
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14 with a lower-bound on Y of 0""")
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15
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16 class Block:
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17 '''Shared by Air and Lava,
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18 holds points and columns.
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19 Columns are dictionaries indexed by (x,z) coords,
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20 value is upward-ordered list of pairs, closed intervals of y'''
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21 def __init__(self,filename):
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22 with open(filename,'r') as file:
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23 self.readHeaders(file)
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24 self.readPoints(file)
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25
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26 cc=self.columns={}
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27 tc={}
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28 for p in self.points:
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29 k=(p[0],p[2])
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30 y=p[1]
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31 try:
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32 yy=tc[k]
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33 insort(yy,y)
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34 except KeyError:
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35 tc[k]=[y]
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36 # convert to lists of intervals
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37 for k,yy in tc.items():
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38 tyy=[yy]
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39 ii=[]
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40 if k==(108.5, -45.5):
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41 pass
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42 while True:
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43 clean=True
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44 for j,yy in enumerate(tyy):
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45 if len(yy)==1+(yy[-1]-yy[0]):
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46 ii.append((yy[0],yy[-1]))
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47 else:
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48 clean=False
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49 for i in range(len(yy)-1):
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50 if yy[i]+1!=yy[i+1]:
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51 ii.append((yy[0],yy[i]))
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52 tyy=[yy[i+1:]]+tyy[j+1:]
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53 break
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54 if clean:
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55 break
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56 self.columns[k]=set(ii) # so we can merge later
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57
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58 def readPoints(self,file):
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59 file.readline()
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60 self.points=[[float(i) for i in l.split('\t')[2].split('/')] for l in file]
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61
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62 Block.readHeaders=readHeaders # from util
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63
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64 class Air(Block):
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65 pass
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66
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67
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68 class Lava(Block):
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69 pass
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70
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71 def d(p1,p2):
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72 dx=p1[0]-p2[0]
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73 dz=p1[1]-p2[1]
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74 dy=p1[2]-p2[2]
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75 return math.sqrt((dx*dx)+(dy*dy)+(dz*dz))
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76
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77 def safety(p):
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78 ka=[((a[0],a[2]),d(a,p)) for a in A.points if d(a,p)<=n]
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79 return [(k,A.columns[k[0]],L.columns.get(k[0],None)) for k in ka]
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80
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81 if __name__=='__main__':
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82 n=10.0
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83 if len(sys.argv)>1:
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84 if sys.argv[1]=='-d':
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85 sys.argv.pop(1)
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86 n=float(sys.argv.pop(1))
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87
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88 if len(sys.argv)>1:
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89 infile=open(sys.argv.pop(1))
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90 else:
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91 infile=sys.stdin
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92
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93 A=Air('air.tsv')
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94
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95 L=Lava('lava.tsv')
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96
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97 readHeaders(sys.modules['__main__'],infile,False)
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98
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99 for l in infile:
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100 c=eval(l)
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101 ss=[]
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102 hits={}
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103 misses=[]
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104 for p in c:
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105 ss=safety(p)
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106 if ss:
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107 for (k,a,l) in ss:
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108 try:
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109 (aa,ll)=hits[k]
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110 aa.update(a)
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111 if l is not None:
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112 ll.update(l)
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113 except KeyError:
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114 hits[k]=(a,l)
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115 else:
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116 misses.append(p)
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117 print(c)
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118 if hits:
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119 print(' %s nearby landing columns'%len(hits))
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120 done={}
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121 for k in sorted(hits.keys(),key=lambda k:k[1]):
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122 if k[0] not in done:
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123 done[k[0]]=1
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124 aa,ll=hits[k]
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125 laa=sorted(list(aa))
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126 lowAir=laa[0][0]
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127 j=-1
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128 if ll is not None:
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129 lll=sorted(list(ll))
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130 highLava=-1
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131 for i,(_,h) in enumerate(lll):
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132 if h>highLava and h<lowAir:
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133 highLava=h
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134 if h+1==lowAir:
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135 j=i
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136 break
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137 if j>-1:
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138 lava='['+','.join(str(e) if i!=j else \
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139 "(%s,%s)"%(e[0],RedFmt%e[1]) for i,e in enumerate(lll))+']'
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140 lowAir=RedFmt%lowAir
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141 else:
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142 lava=None
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143 else:
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144 lava=None
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145 print("%s(%s %s %s)@%0.1f: %s %s"%(' ' if j>-1 else '',
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146 k[0][0],lowAir,k[0][1],k[1],laa,lava))
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147 else:
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148 print(' No nearby landing zones')
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149
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150 if infile!=sys.stdin:
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151 infile.close()