@haithamalnasrawi wrote:
I’m working on my Python code of the
A-staralgorithm and I want to implement it in a3D environment. How could I add the the third dimension until to draw it as a 3D, what I need to do in specific?. How could I change or modify my map until to draw it as a 3D?. Could I get any guidance or assistance please?.This is below my code:
import random import math grid = [[0, 1, 0, 0, 0, 0], [0, 1, 0, 0, 0, 0], [0, 1, 0, 0, 0, 0], [0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 1, 0]] heuristic = [[9, 8, 7, 6, 5, 4], [8, 7, 6, 5, 4, 3], [7, 6, 5, 4, 3, 2], [6, 5, 4, 3, 2, 1], [5, 4, 3, 2, 1, 0]] init = [1,0] #Start location is (1,0) which we put it in open list. goal = [len(grid)-1,len(grid[0])-1] #Our goal in (4,5) and here are the coordinates of the cell. #Below the four potential actions to the single field delta = [[1, 0, 1], [0, 1, 1], [-1, 0, 1], [0, -1, 1], [-1, -1, math.sqrt(2)], [-1, 1, math.sqrt(2)], [1, -1, math.sqrt(2)], [1, 1, math.sqrt(2)]] delta_name = ['V','>','<','^','//','\\','\\','//'] cost = 1 #Each step costs you one def search(): closed = [[0 for row in range(len(grid[0]))] for col in range(len(grid))] ''' Here we are making field as the same size as the grid, we memorize for each cell what action it took to get there. ''' action = [[-1 for row in range(len(grid[0]))] for col in range(len(grid))] #We initialize the starting location as checked closed[init[0]][init[1]] = 1 expand=[[-1 for row in range(len(grid[0]))] for col in range(len(grid))] # we assigned the cordinates and g value x = init[0] y = init[1] g = 0 h = math.sqrt((x - goal[0])**2 + (y - goal[1])**2) #h = heuristic[x][y] f = g + h #our open list will contain our initial value open = [[f, g, h, x, y]] found = False #flag that is set when search complete resign = False #Flag set if we can't find expand count = 0 #print('initial open list:') #for i in range(len(open)): #print(' ', open[i]) #print('----') while found is False and resign is False: #Check if we still have elements in the open list if len(open) == 0: #If our open list is empty, there is nothing to expand. resign = True print('Fail') print('############# Search terminated without success') print() else: #if there is still elements on our list #remove node from list open.sort() #sort elements in an increasing order from the smallest g value up open.reverse() #reverse the list next = open.pop() #remove the element with the smallest g value from the list #print('list item') #print('next') #Then we assign the three values to x,y and g. Which is our expantion. x = next[3] y = next[4] g = next[1] expand[x][y] = count count+=1 #Check if we are done if x == goal[0] and y == goal[1]: found = True print(next) #The three elements above this "if". print('############## Search is success') print() else: #expand winning element and add to new open list for i in range(len(delta)): #going through all our actions the four actions x2 = x + delta[i][0] y2 = y + delta[i][1] #if x2 and y2 falls into the grid if x2 >= 0 and x2 < len(grid) and y2 >=0 and y2 <= len(grid[0])-1: #if x2 and y2 not checked yet and there is not obstacles if closed[x2][y2] == 0 and grid[x2][y2] == 0: g2 = g + cost #we increment the cose h2 = math.sqrt((x2 - goal[0])**2 + (y2 - goal[1])**2) #h2 = heuristic[x2][y2] f2 = g2 + h2 open.append([f2,g2,h2,x2,y2]) #we add them to our open list #print('append list item') #print([g2,x2,y2]) #Then we check them to never expand again closed[x2][y2] = 1 action[x2][y2] = i for i in range(len(expand)): print(expand[i]) print() policy=[[' ' for row in range(len(grid[0]))] for col in range(len(grid))] x=goal[0] y=goal[1] policy[x][y]='*' while x !=init[0] or y !=init[1]: x2=x-delta[action[x][y]][0] y2=y-delta[action[x][y]][1] policy[x2][y2]= delta_name[action[x][y]] x=x2 y=y2 for i in range(len(policy)): print(policy[i]) search()
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