I have the following grid

grid = np.array([
    [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
    [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
    [1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1],
    [1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1],
    [1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1],
    [1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1],
    [1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1],
    [1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1],
    [1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1],
    [1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1],
    [1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1],
    [1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1],
    [1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1],
    [1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1],
    [1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1],
    [1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1],
    [1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1],
    [1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1],
    [1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1],
    [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
    [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]])

And my code:

class Worker():
    def __init__(self, name):
        while True:
            x = random.randint(0,23)
            y = random.randint(0,22)
            if grid[x,y] != 1:
                self.row = x
                self.col = y
                break

        self.name = name


    def move(self, workers):
        while True:
            self.row  = random.randint(-1,1)
            self.col  = random.randint(-1,1)
            if self.row >= 26:
                self.row = 25
            elif self.row<0:
                self.row=0
            if self.col >= 24:
                self.col = 23
            elif self.col<0:
                self.col=0
            if grid[self.col,self.row] != 1:
                self.row = self.row
                self.col = self.col
                break 


def plot_worker_scatter(workers):
    xlist = []
    ylist = []
    for k in range(len(workers)):
        xlist.append(workers[k].col)
        ylist.append(workers[k].row)
        plt.scatter(xlist,ylist,c="red")

def main():
    workerNames = ["1", "2","3","4","5","6","7","8","9","10"]
    numWorkers = 10
    workerList = []
    
    for i in range(numWorkers):
        workerList.append(Worker(workerNames[i]))
    
    for t in range(4):
        for i in range(numWorkers):
            workerList[i].move(workerList)
        print("Just a normal day")
        plt.pcolormesh(grid)
        plot_worker_scatter(workerList)
        plt.scatter(0,0,c="blue")
        plt.title("Normal Activity")
        plt.xlabel("Columns")
        plt.ylabel("Rows")
        plt.xlim(0,MAXCOLS)
        plt.ylim(0,MAXROWS)
        plt.show()
    print(grid[0,10])

if __name__ == "__main__":
    main()

Why are my dots going into the walls even though I have the condition where [self.row, self.col] != 1, Because in the grid the ones are the walls, so how could the dots still go into the grid spaces that are one. Please help. I don't know what to do. This is a simulation where the beings move around their environment randomly. How are the beings moving inside walls even though I have a condition so they don't do that. Please recommend a better code for it if mine isn't right Thank you

CodePudding user response：

I tried your code and I think you are switching rows and cols. When you create your scatter list you do:

        xlist.append(workers[k].col)
        ylist.append(workers[k].row)

meaning that col is the x coordinate, but when you check it you do:

        if grid[self.col,self.row] != 1:

You should do instead:

        if grid[self.row,self.col] != 1:

I tested it with this change and I don't see dots in the wrong area any more after 20 refreshes.

CodePudding user response：

The other solution is correct. In case you also want to avoid the workers overlapping the walls you need to do one more thing:

The workers are currently drawn in the corner of their grid cells. Since every cell is 1 wide and high you can simply shift the workers by 0.5 when drawing them to make sure they are in the middle of the cell:

def plot_worker_scatter(workers):
    xlist = []
    ylist = []
    for k in range(len(workers)):
        xlist.append(workers[k].col   0.5)
        ylist.append(workers[k].row   0.5)
        plt.scatter(xlist,ylist,c="red")