maze gen v2 and solve approved with README setup for everything

mazes/MazeGenSolve/MazeGenSolve.pyde

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+import random, time
+from timeit import default_timer as timer
+
+class Cell:
+    def __init__(self, x, y):
+        self.x, self.y = x, y
+        self.right, self.bottom, self.visited, self.current, self.start, self.end = True, True, False, False, False, False
+        self.parent = None
+        self.marked = False
+   
+    def __str__(self):
+        return 'Cell({}, {}, bottom: {}, right: {}, visited: {})'.format(self.x, self.y, self.bottom, self.right, self.visited)
+    
+    def getNeighbor(self):
+        possible = self.neighbors()
+        possible = [thing for thing in possible if thing != None]
+        if possible:
+            choice = random.choice(possible)
+            return grid[choice[0]][choice[1]]
+        return None
+    
+    def pathingNeighbors(self):
+        pass
+    
+    def neighbors(self):
+        global offsets
+        neighbors = []
+        for offset in offsets:
+            neighbor = (self.x + offset[0], self.y + offset[1])
+            if not valid(neighbor):
+                neighbors.append(None)
+                continue
+            if grid[neighbor[0]][neighbor[1]].visited:
+                neighbors.append(None)
+                continue
+            neighbors.append(neighbor)
+        return neighbors
+    
+    def crender(self):
+        global divX, divY
+        translate(self.x * divX, self.y * divY)
+        # Drawing Cell Background
+        # Visited, Unvisited, Highlighted
+    
+        
+        if self.start:
+            fill(190, 10, 10)
+        elif self.end:
+            fill(190, 10, 10)
+        elif self.marked:
+            fill(35, 155, 165)
+        elif self.visited:
+            fill(0, 42, 135)
+        else:
+            fill(0, 2, 30)
+        
+        if self.current:
+            fill(0, 127, 196)
+            self.current = False
+        noStroke()
+        rect(0, 0, divX, divY)
+        
+        # Drawing Cell Lines
+        stroke(255)
+        fill(255)
+        strokeWeight(2.5)
+        if not self.visited:
+            noStroke()
+        if self.bottom:
+            line(0, divY, divX, divY)
+        if self.right:
+            line(divX, 0, divX, divY)
+        resetMatrix()
+
+class PathingCell:
+    def __init__(self, coords, parent=None):
+        self.coords = coords
+        self.parent = parent
+        self.h, self.g, self.f = 0, 0, 0
+    
+    def __eq__(self, other):
+        return self.coords == other.coords
+
+def openWalls(x1, y1, x2, y2):
+    global offsets
+    # Bottom, Right, Left, Top
+    offset = (x2 - x1, y2 - y1)
+    if offset == offsets[0]:
+        grid[x1][y1].bottom = False
+    if offset == offsets[1]:
+        grid[x1][y1].right = False
+    if offset == offsets[2]:
+        grid[x2][y2].right = False
+    if offset == offsets[3]:
+        grid[x2][y2].bottom = False
+
+
+def valid(coordinate):
+    global columns, rows
+    return not (coordinate[0] < 0 or coordinate[0] >= columns or coordinate[1] < 0 or coordinate[1] >= rows)
+
+def generate():
+    global complete, columns, rows, grid, divX, divY, current, offsets, start, end
+    # Bottom, Right, Left, Top
+    complete = False
+    offsets = [(0, 1), (1, 0), (-1, 0), (0, -1)]
+    columns, rows = 100, 100
+    divX, divY = width / float(columns), height / float(rows)
+    grid = [[Cell(x, y) for y in range(rows)] for x in range(columns)]
+    current = grid[random.randint(0, columns-1)][random.randint(0, rows-1)]
+    start = current
+    ends = [(random.randint(0, columns-1), random.randint(0, rows-1)) for _ in range(5)]
+    end = ends.pop(0)
+    prevDist = 0 
+    for coord in ends:
+        dist = distance(start.x, start.y, coord[0], coord[1])
+        if dist > prevDist:
+            prevDist = dist
+            end = coord
+    end = grid[end[0]][end[1]]
+    end.end = True
+    current.visited = True
+    current.start = True
+
+def setup():
+    size(750, 750)
+    # random.seed(1)
+    generate()
+    # noLoop()
+
+def astar(grid, start, end):
+    start_cell = PathingCell(start, None)
+    end_cell = PathingCell(end, None)
+    
+    open_list = [start_cell]
+    closed_list = []
+    
+    # While the open list is not empty
+    while len(open_list) > 0:
+        # Find the best cell to loop no
+        current_cell, current_index = open_list[0], 0
+        for index, cell in enumerate(open_list):
+            if current_cell.f > cell.f:
+                current_cell = cell
+                current_index = index
+        
+        # Remvoe the new current cell from the open list and to the closed list
+        closed_list.append(current_cell)
+        open_list.pop(current_index)
+        
+        # Check if the current cell is the end cell (we've found the exit)
+        if current_cell == end_cell:
+            current = current_cell
+            path = []
+            while current is not None:
+                path.append(current.coords)
+                current = current.parent
+            return path[::-1]
+    
+        children = []
+        # Bottom, Right, Left, Top
+        # Find neighbor cells we can move into
+        for index, offset in enumerate(offsets):
+            # Calculate the coordinate of the adjacent neighbor we're looking at
+            new_coord = (current_cell.coords[0] + offset[0], current_cell.coords[1] + offset[1])
+            # If the coordinate we're looking at is valid
+            if valid(new_coord):
+                # Create a new pathing cell
+                new_cell = PathingCell(new_coord, current_cell)
+                # is the bottom open?
+                if index == 0:
+                    if not grid[current_cell.coords[0]][current_cell.coords[1]].bottom:
+                        children.append(new_cell)
+                # is the right open?
+                elif index == 1:
+                    if not grid[current_cell.coords[0]][current_cell.coords[1]].right:
+                        children.append(new_cell)
+                # is the left side open?
+                elif index == 2:
+                    if not grid[new_coord[0]][new_coord[1]].right:
+                        children.append(new_cell)
+                # is the top open?
+                elif index == 3:
+                    if not grid[new_coord[0]][new_coord[1]].bottom:
+                        children.append(new_cell)
+        
+        for child in children:
+            # is the child we looked at already closed?
+            skip = False
+            for closed_child in closed_list:
+                if child == closed_child:
+                    skip = True
+            if skip:
+                continue
+            
+            # calculate algorithmic values
+            child.g = current_cell.g + 1
+            child.h = ((current_cell.coords[0] - end_cell.coords[0]) ** 2) + ((current_cell.coords[1] - end_cell.coords[1]) ** 2)
+            child.f = child.g + child.h
+        
+            # is the cell already open? is the cell we made worst in path iterations?
+            for open_cell in open_list:
+                if child == open_cell and child.g > open_cell.g:
+                    continue
+            
+            # open the new cell
+            open_list.append(child)
+
+def randomizeOpen(chance=0.05):
+    global grid
+    for row in grid:
+        for cell in row:
+            if random.random() < chance:
+                if random.choice([True, False]):
+                    cell.right = False
+                else:
+                    cell.bottom = False
+
+def mazeGenTick():
+    global current, next, i
+    for _ in range(500):
+        next = current.getNeighbor()
+        if next:
+            next.parent = current
+            openWalls(current.x, current.y, next.x, next.y)
+            current = next
+            grid[current.x][current.y].current = True
+            current.visited = True
+        else:
+            if current.parent != None:
+                current.parent
+                current = current.parent
+                grid[current.x][current.y].current = True
+            else:
+                global start
+                if current == start and current.getNeighbor() == None:
+                    global complete
+                    complete = True
+                    print('Done')
+
+def distance(x1, y1, x2, y2):
+    return sqrt(((x2 - x1) ** 2) + ((y2 - y1) ** 2))
+
+# Render the maze itself
+def render():
+    background(0)
+    for column in grid:
+        for cell in column:
+            cell.crender()
+
+# Render the path of coordinates connecting them with ellipses and lines
+def renderpath(path):
+    fill(48, 255, 103)
+    stroke(48, 255, 103)
+    for index, coord in enumerate(path[:-1]):
+        ellipse(coord[0] * divX + (divX * 0.5), coord[1] * divY + (divY * 0.5), divX / 3, divY / 3)
+        line(coord[0] * divX + (divX * 0.5), coord[1] * divY + (divY * 0.5), path[index + 1][0] * divX + (divX * 0.5), path[index + 1][1] * divY + (divY * 0.5))
+    ellipse(path[-1][0] * divX + (divX * 0.5), path[-1][1] * divY + (divY * 0.5), divX / 3, divY / 3)
+
+def draw():
+    render()
+    global complete
+    if complete:
+        # randomizeOpen(0.15)
+        startTime = timer()
+        path = astar(grid, (start.x, start.y), (end.x, end.y))
+        endTime = timer()
+        # for coord in path:
+        #     grid[coord[0]][coord[1]].marked = True
+        render()
+        print('Maze is {} x {} tiles with a solve path length of {} tiles.'.format(columns, rows, len(path)))
+        print('The solve path took about {}s to complete.'.format(round(endTime - startTime, 3)))
+        renderpath(path)
+        noLoop()
+    else:
+        mazeGenTick()

mazes/MazeGenSolve/sketch.properties

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+mode=Python
+mode.id=jycessing.mode.PythonMode

mazes/MazeGenV2/MazeGenV2.pyde

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+import random, time
+
+class Cell:
+    def __init__(self, x, y):
+        self.x, self.y = x, y
+        self.right, self.bottom, self.visited, self.current, self.start = True, True, False, False, False
+    def __str__(self):
+        return 'Cell({}, {}, bottom: {}, right: {}, visited: {})'.format(self.x, self.y, self.bottom, self.right, self.visited)
+    
+    def getNeighbor(self):
+        possible = self.neighbors()
+        possible = [thing for thing in possible if thing != None]
+        if possible:
+            choice = random.choice(possible)
+            return grid[choice[0]][choice[1]]
+        return None
+    
+    # def getNeighbor(self):
+    #     possible = self.neighbors()
+    #     if any([thing != None for thing in possible]):
+    #         xchoice = None
+    #         while xchoice == None:
+    #             xchoice = random.choices(possible, weights=[2, 1, 1, 2], k=1)[0]
+    #         return grid[xchoice[0]][xchoice[1]]
+    #     else:
+    #         return None
+    
+    def neighbors(self):
+        global offsets
+        neighbors = []
+        for offset in offsets:
+            neighbor = (self.x + offset[0], self.y + offset[1])
+            if not valid(neighbor):
+                neighbors.append(None)
+                continue
+            if grid[neighbor[0]][neighbor[1]].visited:
+                neighbors.append(None)
+                continue
+            neighbors.append(neighbor)
+        return neighbors
+    
+    def render(self):
+        global divX, divY
+        translate(self.x * divX, self.y * divY)
+        # Drawing Cell Background
+        # Visited, Unvisited, Highlighted
+        
+        if self.start:
+            fill(28, 147, 158)
+        elif self.visited:
+            fill(0, 42, 135)
+        else:
+            fill(0, 2, 30)
+        
+        if self.current:
+            fill(0, 127, 196)
+            self.current = False
+        noStroke()
+        rect(0, 0, divX, divY)
+        
+        # Drawing Cell Lines
+        stroke(255)
+        fill(255)
+        strokeWeight(2.5)
+        if not self.visited:
+            noStroke()
+        if self.bottom:
+            line(0, divY, divX, divY)
+        if self.right:
+            line(divX, 0, divX, divY)
+        resetMatrix()
+
+def openWalls(x1, y1, x2, y2):
+    global offsets
+    # Bottom, Right, Left, Top
+    offset = (x2 - x1, y2 - y1)
+    if offset == offsets[0]:
+        grid[x1][y1].bottom = False
+    if offset == offsets[1]:
+        grid[x1][y1].right = False
+    if offset == offsets[2]:
+        grid[x2][y2].right = False
+    if offset == offsets[3]:
+        grid[x2][y2].bottom = False
+
+
+def valid(coordinate):
+    global columns, rows
+    return not (coordinate[0] < 0 or coordinate[0] >= columns or coordinate[1] < 0 or coordinate[1] >= rows)
+
+def generate():
+    global complete, columns, rows, grid, divX, divY, current, offsets
+    # Bottom, Right, Left, Top
+    complete = 0
+    offsets = [(0, 1), (1, 0), (-1, 0), (0, -1)]
+    columns, rows = 50, 50
+    divX, divY = width / float(columns), height / float(rows)
+    grid = [[Cell(x, y) for y in range(rows)] for x in range(columns)]
+    current = grid[random.randint(0, columns-1)][random.randint(0, rows-1)]
+    current.visited = True
+    current.start = True
+
+def setup():
+    size(750, 750)
+    frameRate(10000)
+    generate()
+    
+def mazeGenTick(loops=500):
+    global current, next, i
+    for _ in range(loops):
+        next = current.getNeighbor()
+        if next:
+            i = 0
+            next.parent = current
+            openWalls(current.x, current.y, next.x, next.y)
+            current = next
+            grid[current.x][current.y].current = True
+            current.visited = True
+        else:
+            try:
+                current.parent
+                current = current.parent
+                grid[current.x][current.y].current = True
+            except:
+                global complete
+                complete += 1
+    
+def render():
+    background(0)
+    for column in grid:
+        for cell in column:
+            cell.render()
+
+i = 0
+def draw():
+    render()
+    global complete
+    if complete > 10:
+        # saveFrame("maze-###.png")
+        time.sleep(2.0)
+        generate()
+    if complete > 1:
+        mazeGenTick()
+        render()
+    else:
+        mazeGenTick(1)

mazes/MazeGenV2/sketch.properties

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+mode=Python
+mode.id=jycessing.mode.PythonMode

mazes/README.md

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+# mazes
+
+## About
+
+Projects that generate mazes using various algorithms. Developed primarily in 2018-2019. All of these are generating simple square mazes, just using different algorithms and occaisionally a little twist.
+
+## Sketches
+
+- **MazeGenV2** Second maze generation attempt. First *working* maze implementation. Recursive Backtracker algorithm.
+
+- **MazeGenSolve** - Maze gen with a completed path shown after. Recursive Backtracker algorithm for Generation, A* algorithm for pathfinding (very similar in theory).
+
+- **MazeGenBinaryTree** - Binary Tree algorithm
+
+- **MazeGenGrowingTree** - Growing Tree algorithm
+
+- **MazeGenKruskalTree** - Kruskal Tree algorithm
+
+- **MazeGenSidewinder** - Sidewinder algorithm. A little bit buggy at the end, but properly implemented none the less.
+
+- **MazeClustersCreator** - Not so much a maze as a interesting side-project when developing my maze generators. Somewhat buggy.