def runTest(self):
self.p = 0
while self.p < self.maxP: # loop over p values, step up by predefined amount
solvedMazes = 0
for x in range(0, self.mazePerP): # make this number of mazes
m = maze.Maze(self.dim, self.p)
d = dfs.Dfs(m)
result = d.search() # run dfs
if (result is not None
): # add one to counter for each solved maze
solvedMazes += 1
self.ploty.append(
solvedMazes / self.mazePerP
) # divide number of solvable mazes by total number of mazes generated.
self.p += self.step
self.ploty = np.array(self.ploty)
print(self.plotx)
print(self.ploty)
plt.title("Density VS. Maze solvability for graph of size " +
str(self.dim))
plt.xlabel("Density")
plt.ylabel("Solvability")
plt.plot(self.plotx, self.ploty) # plot using pyplot
plt.show()
def runTest(self):
self.p = 0
while self.p < self.maxP: # loop over p values up to max
totalPathLength = 0
x = 0
while x <self.mazePerP: # generate the right number of graphs per p
m = maze.Maze(self.dim, self.p)
a = AStarManhatten.AStarManhatten(m)
path = a.search()
if path is not None: # only count path if it is not none.
totalPathLength += len(path)
x+=1
self.ploty.append(totalPathLength / self.mazePerP) # add the average length
self.p += self.step
self.ploty = np.array(self.ploty)
print(self.plotx)
print(self.ploty)
plt.title("Density VS. Expected path length for graph of size " + str(self.dim))
plt.xlabel("Density")
plt.ylabel("Expected Path Length")
plt.plot(self.plotx, self.ploty) # plot using pyplot
plt.show()
def runTest(self):
i = 0
while i < self.noMazes:
m = maze.Maze(self.dim, self.p)
man = AStarManhatten.AStarManhatten(m)
resman = man.search()
if (resman is not None):
self.manhattenData[
0] = self.manhattenData[0] + man.getMaxFringe()
self.manhattenData[
1] = self.manhattenData[1] + man.getNodesExplored()
self.manhattenData[2] = self.manhattenData[2] + len(
resman) # add data from the last run
euclid = AStarEuclid.AStarEuclid(m)
reseuclid = euclid.search()
self.euclidData[0] = self.euclidData[0] + euclid.getMaxFringe()
self.euclidData[
1] = self.euclidData[1] + euclid.getNodesExplored()
self.euclidData[2] = self.euclidData[2] + len(
reseuclid) # add data from the last run
i += 1
self.manhattenData = np.array(self.manhattenData)
self.euclidData = np.array(self.euclidData)
# Most of this bar chart code comes from here:
#https://matplotlib.org/3.1.0/gallery/lines_bars_and_markers/barchart.html#sphx-glr-gallery-lines-bars-and-markers-barchart-py
# it is not related to AI so I just reuse.
ind = np.arange(len(
self.manhattenData)) # the x locations for the groups
width = 0.35 # the width of the bars
fig, ax = plt.subplots()
rects1 = ax.bar(ind - width / 2,
self.manhattenData,
width,
label='Manhatten')
rects2 = ax.bar(ind + width / 2,
self.euclidData,
width,
label='Euclid')
# Add some text for labels, title and custom x-axis tick labels, etc.
ax.set_ylabel('Resource usage')
ax.set_title('Manhatten vs Euclid')
ax.set_xticks(ind)
ax.set_xticklabels(('Sum max fringe size', 'Sum of all nodes explored',
'Sum of path length'))
ax.legend()
self.autolabel(ax, rects1, "left")
self.autolabel(ax, rects2, "right")
fig.tight_layout()
plt.show()
def __init__(self, noMazes: int, dim: int):
self.imnumber = 0
self.dim = dim
self.type = True # true for bfs, false for ASTAR
self.mazes = []
self.noMazes = noMazes
self.changeThreshhold = 1
self.stopAfterBeingUnderThresholdThisManyTimes = 25
x = 0
while (x < noMazes): # make our mazes to start with
m = maze.Maze(dim, .2)
if self.type:
if self.rankDFS(m) != 0:
self.mazes.append(m)
x += 1
else:
if self.rankAstar(m) != 0:
self.mazes.append(m)
x += 1
self.running = True
heapq.heapify(self.mazes)
import qOne.AStar as AStar import qOne.AStar as AStar import qOne.maze as maze class AStarManhatten(AStar.AStar): def __init__(self, maze): super(AStarManhatten, self).__init__(maze) def heuristic(self, item:tuple) ->float: return abs(item[0] - self.maze.getDim()+ 1) + abs(item[1] - self.maze.getDim() +1 ) # return the dis. +1 is off by one error due to 0 indexing of arrays. if __name__=='__main__': m = maze.Maze(100,0) A = AStarManhatten(m) path = A.search() m.print_with_temp_path(path)
if __name__ == "__main__":
# 100 because its sufficiently hard enough for BFS
MAZE_SIZE = 100
# run each algorithm on the list of mazes, get avg times
algos_map = {
"astareuclid": AStarEuclid.AStarEuclid,
"astarmanhattan": AStarManhatten.AStarManhatten,
"bfs": bfs.Bfs,
"bibfs": bibfs.BiDirectionalBFS,
"dfs": dfs.Dfs
}
# run for each maze
m = maze.Maze(MAZE_SIZE, 0.2)
for algo_name, algo in algos_map.items():
a = algo(m)
path = a.search()
while True:
if path is not None:
break
else:
m.clear_grid()
m.generateGrid()
path = a.search()
m.gen_and_save_graphs_with_temp_path(path, "bulletTwo",
# A = AStarEuclid.AStarEuclid(m)
# path = A.search()
# m.print_with_temp_path(path)
# 100 because its sufficiently hard enough for BFS
MAZE_SIZE = 10
TIMES_TO_RUN_INNER_LOOP = 10
# range of p_values
p_values = range(1, 8, 1)
# generate a maze for each p_val
mazes = list()
for p in p_values:
cur_p = p / 20 # steps of .05, .1, .15, ..., .4
cur_m = maze.Maze(MAZE_SIZE, cur_p)
cur_m.generateGrid()
mazes.append(cur_m)
# run each algorithm on the list of mazes, get avg times
time_algo_map = dict(astareuclid=dict(algo=AStarEuclid.AStarEuclid,
times=list()),
astarmanhattan=dict(
algo=AStarManhatten.AStarManhatten, times=list()),
bfs=dict(algo=bfs.Bfs, times=list()),
bibfs=dict(algo=bibfs.BiDirectionalBFS, times=list()),
dfs=dict(algo=dfs.Dfs, times=list()))
# run for each maze
for cur_maze in mazes:
from qOne import bibfs
from qOne import AStarManhatten
from qOne import maze
if __name__ == "__main__":
m = maze.Maze(100, 0.2)
astar = AStarManhatten.AStarManhatten(m)
bdbfs = bibfs.BiDirectionalBFS(m)
astar_path = astar.search()
bdbfs_path = bdbfs.search()
m.gen_and_save_graphs_with_temp_path(astar_path,
fname="a.png",
graph_title="AStar")
m.gen_and_save_graphs_with_temp_path(bdbfs_path,
fname="bd.png",
graph_title="BiBFS")
# left
if j - 1 != -1 and (grid[i][j - 1] == 0 or grid[i][j - 1]
== 'g') and self.prev[i][j - 1] is None:
ret.append((i, j - 1))
# down
if i + 1 < len(grid) and (grid[i + 1][j] == 0 or grid[i + 1][j]
== 'g') and self.prev[i + 1][j] is None:
ret.append((i + 1, j))
# to the right. If it is not outside of the maze, is a free spot, and has not been visited yet, we pass this check.
if j + 1 < len(grid) and (grid[i][j + 1] == 0 or grid[i][j + 1]
== 'g') and self.prev[i][j + 1] is None:
ret.append((i, j + 1))
# item above. If it is not outside of the maze, is a free spot, and has not been visited yet, we pass this check.
if i - 1 != -1 and (grid[i - 1][j] == 0 or grid[i - 1][j]
== 'g') and self.prev[i - 1][j] is None:
ret.append((i - 1, j))
return ret
if __name__ == '__main__':
m = maze.Maze(100, .2)
d = Dfs(m)
path = d.search()
m.print_with_temp_path(path)
b = self.back_previous[b] f_path.reverse() # start b_path from 1 instead of 0 since they both contain same node # we could also do f_path[:-1] if self.single_mode: res = f_path else: res = f_path + b_path[1:] return res if __name__ == "__main__": myM = maze.Maze(100, 0.1) doB = BiDirectionalBFS(myM, single_mode=True) p = doB.search() myM.print_with_temp_path(p) print(p)
