Thanks guys, I will study about shader and effect more Thanks!

I created 2D space shooting game
I want your suggestion from any experts or anyone. I have just learned Python for a month and I want some suggestions to improve my coding skills.
I test and run this script on iPad

from scene import *
import sound
import random
import math
A = Action

class Laser(SpriteNode):
    def __init__(self, txture, object, **kwargs):
        SpriteNode.__init__(self, txture, **kwargs)
        self.shooter = object

class Heart(SpriteNode):
    def __init__(self, **kwargs):
        SpriteNode.__init__(self, 'plf:HudHeart_full', **kwargs)

class Enemy(SpriteNode):
    def __init__(self, txture, **kwargs):
        SpriteNode.__init__(self, txture, **kwargs)
        self.time = 0
        allow_move = random.choice(('x', 'y'))
        self.allow_move = allow_move
        
class MyScene (Scene):
    def setup(self):
        self.move = 'up'; self.player_score = 0; self.touch_id_location = {}; self.touched = False;
        self.laser_on_screen = []; self.enemy_on_screen = []; self.player_health = 100; self.game_playing = True
        self.heart_on_screen = []; self.shown = False
        for x in range(int((self.size.x / 128)) + 1):
            for y in range(int((self.size.y / 128)) + 1):
                bg = SpriteNode(Texture('spc:BackgroundBlue'), position = (x * 128, y *128)); self.add_child(bg)
        self.score = LabelNode(f'Score: {self.player_score}', ('<System-Bold>', 30), position = (120, self.size.h - 30)); self.add_child(self.score)
        self.player_health_label = LabelNode(f'Health: {self.player_health}', ('<System-Bold>', 30), position = (self.size.w - 120, self.size.h - 30)); self.add_child(self.player_health_label)
        self.player = SpriteNode(Texture('spc:PlayerShip1Green'), position = (self.size.w / 2, self.size.h / 2))
        self.add_child(self.player)
        self.joy_layout = SpriteNode(Texture('iow:ios7_circle_outline_256'), position = (160, 160), alpha = 0.25, scale = 1)
        self.add_child(self.joy_layout)
        self.shoot_button = SpriteNode(Texture('iow:ios7_circle_filled_256'), position = (self.size.w - 160, 160), scale = 0.5, alpha = 0.25); self.add_child(self.shoot_button)
    
    def update(self):
        if self.game_playing:
            if self.touched:
                touch_location = self.touch_id_location.get(self.touch_in_joy)
                self.move_ship()
            if len(self.laser_on_screen) > 0:
                for laser in self.laser_on_screen:
                    if laser.position.x > self.size.w or laser.position.y > self.size.h or laser.position.x < 0 or laser.position.y < 0 :
                        self.laser_on_screen.remove(laser)
                        laser.remove_from_parent()
            self.spawn_enemy()
            self.check_laser_collision()
            self.score.text = f'Score: {self.player_score}'
            self.player_health_label.text = f'Health: {self.player_health}'
            self.move_enemy()
            self.spawn_heart_pack()
            self.check_player_get_heart()
        if self.player_health <= 0:
            self.game_playing = False
            self.joy_layout.remove_from_parent()
            self.shoot_button.remove_from_parent()
            for enemy in self.enemy_on_screen:
                enemy.remove_from_parent()
            for laser in self.laser_on_screen:
                laser.remove_from_parent()
            for heart in self.heart_on_screen:
                heart.remove_from_parent()
            self.player.remove_from_parent()
            if not self.shown:
                self.lose_scene()
                self.shown = True
    
    def lose_scene(self):
        sound.play_effect('arcade:Explosion_4')
        self.lose_label = LabelNode('LOSE!', ('<System-Bold>', 60), position = (self.size.w /2, self.size.h / 2)); self.add_child(self.lose_label)
        self.score_label = LabelNode(f'Score: {self.player_score}', ('<System-Bold>', 50), position = (self.size.w /2, self.size.h / 2 - 100)); self.add_child(self.score_label)
            
    
    def check_player_get_heart(self):
        for heart in self.heart_on_screen:
            if self.player.position in heart.frame:
                self.heart_on_screen.remove(heart)
                heart.remove_from_parent()
                sound.play_effect('arcade:Powerup_1')
                self.player_health += 15
                        
    def touch_began(self, touch):
        self.touch_id_location[touch.touch_id] = touch.location
        if touch.location in self.joy_layout.frame and not self.touched:
            self.joy_layout.run_action(A.sequence(A.scale_to(1.25, 0.025)))
            self.joy_layout.position = touch.location
            self.touch_in_joy = touch.touch_id
            self.joy = SpriteNode(Texture('iow:ios7_circle_filled_256'), position = touch.location, alpha = 0.25, scale = 0.25)
            self.add_child(self.joy)
            self.test = SpriteNode(Texture('iow:ios7_circle_filled_256'), position = touch.location, scale = 0.25)
            self.add_child(self.test)
            self.touched = True
            
        if touch.location in self.shoot_button.frame:
            sound.play_effect('digital:Laser2')
            self.shoot_button.run_action(A.sequence(A.scale_to(0.4, 0.05), A.scale_to(0.5, 0.05)))
            self.shoot_laser(self.player.position, 'spc:LaserBlue9', self.player, self.move)
            
            
    def touch_moved(self, touch):
        self.touch_id_location[touch.touch_id] = touch.location
        try:
            if touch.touch_id == self.touch_in_joy:
                self.joy.position = touch.location
        except AttributeError:
            pass
            
    def touch_ended(self, touch):
        self.touch_id_location.pop(touch.touch_id)
        try:
            if touch.touch_id == self.touch_in_joy:
                self.joy.remove_from_parent()
                self.joy_layout.run_action(A.sequence(A.scale_to(1, 0.025)))
                self.joy_layout.position = (160, 160)
                self.touched = False
                self.test.remove_from_parent()
        except AttributeError:
            pass
            
    def move_ship(self):
        move_attributes = {
            'up': ((0, 6), math.radians(0)),
            'down': ((0, -6), math.radians(180)),
            'left': ((-6, 0), math.radians(90)),
            'right': ((6, 0), math.radians(270))
        }
        touch_position = self.touch_id_location.get(self.touch_in_joy)
        if touch_position not in self.test.frame:
            if self.test.position.x - 64 < touch_position.x < self.test.position.x + 64:
                if touch_position.y > self.test.position.y:
                    self.move = 'up'
                else:
                    self.move = 'down'
            if self.test.position.y - 64 < touch_position.y < self.test.position.y + 64:
                if touch_position.x > self.test.position.x:
                    self.move = 'right'
                else:
                    self.move = 'left'
                    
        m = move_attributes.get(self.move)
        try:
            x = max(0, min(self.size.w, self.player.position.x + m[0][0]))
            y = max(0, min(self.size.y, self.player.position.y + m[0][1]))
            self.player.position = (x, y)
            self.player.run_action(A.sequence(A.rotate_to(m[1], 0.025)))
        except TypeError:
            pass
    
    def shoot_laser(self, position, txture, object, orient):
        if object == self.player:
            laser_attributes = {
                'up': ((0, 500), math.radians(0), (0, 64)),
                'down': ((0, -500), math.radians(180), (0, -64)),
                'left': ((-500, 0), math.radians(90), (-64, 0)),
                'right': ((500, 0), math.radians(270), (64, 0))
            }
        else:
            laser_attributes = {
                'up': ((0, 250), math.radians(0), (0, 64)),
                'down': ((0, -250), math.radians(180), (0, -64)),
                'left': ((-250, 0), math.radians(90), (-64, 0)),
                'right': ((250, 0), math.radians(270), (64, 0))
                }
        l = laser_attributes.get(orient)
        x, y = l[0]
        laser = Laser(txture, object); laser.position = (object.position.x + l[2][0], object.position.y + l[2][1])
        self.laser_on_screen.append(laser); self.add_child(laser)
        laser.run_action(A.sequence(A.rotate_to(l[1], 0.00001), A.repeat_forever(A.move_by(x, y))))
    
    def spawn_enemy(self):
        self.difficulty = 0.008 + self.player_score * 0.0000002
        if random.random() < self.difficulty and len(self.enemy_on_screen) <= 8:
            index = random.choice([1, 0])
            coor = [(random.uniform(200, self.size.w), random.uniform(self.size.h - 200, self.size.h)), (random.uniform(200, self.size.w - 200), random.uniform(0 ,200))]
            x, y = coor[index]
            txture = random.choice(['spc:EnemyGreen4', 'spc:EnemyBlack4', 'spc:EnemyBlue4'])
            enemy = Enemy(txture)
            if index == 0:
                 enemy.position = (self.size.w / 2, self.size.h + 48)
            else:
                enemy.position = (self.size.w / 2, -48)
            enemy.run_action(A.sequence(A.move_to(x, y, 1)))
            self.add_child(enemy) 
            self.enemy_on_screen.append(enemy)
    
    def spawn_heart_pack(self):
        difficulty = self.difficulty * 0.05
        if random.random() < difficulty:
            posX, posY =  (random.uniform(self.size.w - 300, 300), random.uniform(self.size.h - 300, 300))
            self.heart = Heart(); self.heart.position = (posX, posY); self.heart.scale = 0.8
            self.add_child(self.heart); self.heart_on_screen.append(self.heart)
           
    def check_laser_collision(self):
        for laser in self.laser_on_screen:
            for enemy in self.enemy_on_screen:
                if laser.position in enemy.frame:
                    self.enemy_on_screen.remove(enemy)
                    enemy.remove_from_parent()
                    try:
                        self.laser_on_screen.remove(laser)
                    except ValueError:
                        pass
                    laser.remove_from_parent()
                    self.player_score += 80
                    sound.play_effect('arcade:Explosion_1')
                    self.explosion_effect(enemy.position)
            if laser.position in self.player.frame and (laser.shooter in self.enemy_on_screen):
                sound.play_effect('game:Error')
                try:
                    self.laser_on_screen.remove(laser)
                except ValueError:
                    pass
                    
                self.player_health -= 5
                laser.remove_from_parent()
                for i in range(6):
                    particle = SpriteNode(Texture('spc:MeteorBrownMed2'), position = self.player.position, scale=random.uniform(0.3, 0.5))
                    actions1 = [A.group(A.move_by(random.uniform(-64, 64), random.uniform(-64, 64), random.uniform(0.4, 0.9)), A.rotate_by(random.uniform(1, 3), 0.4)), A.wait(0.4), A.fade_to(0, 0.3)] 
                    self.add_child(particle); particle.run_action(A.sequence(actions1))
                    
                   
    def explosion_effect(self, position):
        index = 0
        time = [0.0, 0.1, 0.2, 0.3, 0.4]
        for i in range(4):
            explosion_texture = random.choice(('shp:Explosion01', 'shp:Explosion04', 'shp:Explosion00'))
            ex_position = (position.x + random.uniform(-24, 24), position.y + random.uniform(-24, 24))
            pa_position = (position.x + random.uniform(-16, 16), position.y + random.uniform(-16, 16))
            actions = [A.wait(time[index]), A.fade_to(1, 0.04), A.wait(0.06), A.remove()]
            exploded = SpriteNode(Texture(explosion_texture), position = ex_position, scale = random.uniform(0.25, 0.5), alpha = 0)
            self.add_child(exploded); exploded.run_action(A.sequence(actions))
            index += 1
            particle = SpriteNode(Texture('spc:MeteorBrownMed2'), position = pa_position, scale=random.uniform(0.5, 0.8))
            actions1 = [A.group(A.move_by(random.uniform(-64, 64), random.uniform(-64, 64), random.uniform(0.4, 0.9)), A.rotate_by(random.uniform(1, 3), 0.4)), A.wait(0.4), A.fade_to(0, 0.3)] 
            self.add_child(particle); particle.run_action(A.sequence(actions1))

    def move_enemy(self):
        orient = ''
        for enemy in self.enemy_on_screen:
            if not self.can_shoot_laser(enemy):      
                if enemy.position.y > self.player.position.y and enemy.allow_move == "y":
                    orient = 'down'
                    self.enemy_moving(orient, enemy)
                elif enemy.allow_move == 'y':
                    orient = 'up'
                    self.enemy_moving(orient, enemy)
                if enemy.position.x > self.player.position.x and enemy.allow_move == "x":
                    orient = 'left'
                    self.enemy_moving(orient, enemy)
                elif enemy.allow_move == 'x':
                    orient = 'right'
                    self.enemy_moving(orient, enemy)
                    
            
    def enemy_moving(self, orient, enemy):
        move_attributes = {
            'up': ((0, 2.5), math.radians(0)),
            'down': ((0, -2.5), math.radians(180)),
            'left': ((-2.5, 0), math.radians(90)),
            'right': ((2.5, 0), math.radians(270))
        }
        try:
            m = move_attributes.get(orient)
            x = max(0, min(self.size.w, enemy.position.x + m[0][0]))
            y = max(0, min(self.size.y, enemy.position.y + m[0][1]))
            enemy.position = (x, y)
            enemy.run_action(A.sequence(A.rotate_to(m[1], 0.025)))
        except (TypeError):
            pass
                 
    def can_shoot_laser(self, enemy):
        aligned = False
        if self.player.position.x - 64 < enemy.position.x < self.player.position.x + 64:
            enemy.time += 1
            aligned = True
            if enemy.position.y > self.player.position.y:
                orient = 'down'
            else:
                orient = 'up'
                
        if self.player.position.y - 64 < enemy.position.y < self.player.position.y + 64:
            enemy.time += 1
            aligned = True
            if enemy.position.x > self.player.position.x:
                orient = 'left'
            else:
                orient = 'right'
    
        if enemy.time > 60:
            enemy.time = 0
            self.shoot_laser(enemy.position, 'spc:LaserRed9', enemy, orient)
            sound.play_effect('arcade:Laser_5')
            if enemy.allow_move == 'x':
                enemy.allow_move = 'y'
            else:
                enemy.allow_move = 'x'
        return aligned
        
if __name__ == '__main__':
    run(MyScene(), show_fps=False) ```

I created 2D minesweeper game
I've learned Python for a month and I decided to create 2D minesweeper game using scene module in Pythonista. I want some recommendations from any experts to make my code more cleaner and remove some unnecessary steps.
Also try out my game :)

from scene import *
import sound
import random

#randomly install the mines on the board
def setTheMine(board):
        for i in range(int(len(board))):
            board[random.randint(0,len(board) - 1)][random.randint(0,len(board) - 1)] = "#"
        return board
        
class App(Scene):    
    def setup(self):
        self.x, self.y = 0, 0
        #turn cheat to True to see the mines while playing
        self.cheat = False
        #create 2d matrix board
        # '-' = empty space and '#' = mine
        self.board = [["-" for i in range(10)] for i in range(10)]
        self.background_color = '#828adb'
        #install the mine
        self.board = setTheMine(self.board)
        #assign tile coordinates  
        self.tileDict = {}
        for row in range(len(self.board)):
            for block in range(len(self.board[0])):
                posist = str(block)+str(row)
                posX_value = int(self.size.w / 2) - int((len(self.board) * 48) / 2) + (48 * block)
                posY_value = int(self.size.h / 2) + int((len(self.board) * 48) / 2) - (48 * row)
                x = self.tileDict.setdefault(posist, (posX_value, posY_value))
        #tile color according values
        self.tileColor = {
            "0": 'pzl:Green3',
            "1": 'pzl:Blue3',
            "2": 'pzl:Yellow3',
            "3": 'pzl:Red3',
            "4": 'pzl:Red3',
            "5": 'pzl:Red3',
            "6": 'pzl:Red3',
            "7": 'pzl:Red3',
            "-": 'pzl:Gray3',
            "#": 'pzl:Gray3'
        }
        self.labelFont = ('Adidas Unity', 50)
        self.gameStart = True
        #display 2D graphic board
        self.displayBoard()
        
    def touch_began(self, touch):
        self.x, self.y = touch.location
        
    def displayBoard(self):
        grid = Node(parent=self)
        row1 = 0
        for row in self.board:
            column = 0
            for block in row:
                posX , posY = self.tileDict.get(str(column)+str(row1))
                tile = SpriteNode(Texture(self.tileColor.get(block)), position = (posX, posY), scale = 1.5)
                grid.add_child(tile)
                if self.cheat:
                    if block == '#':
                        self.mine = SpriteNode(Texture('emj:Bomb'), position = (posX, posY), scale = 0.5)
                        self.add_child(self.mine)
                if block is not "-" and block is not "#":
                    self.mineLabel = LabelNode(self.board[row1][column], self.labelFont, position = (posX, posY), scale = 0.5)
                    self.add_child(self.mineLabel)
                column += 1
            row1 += 1
                         
    def update(self):
        #check for touch input. is touch input on the board 
        found = False
        for y in range(len(self.board)):
            for x in range(len(self.board[0])):
                testCase = str(x)+str(y)
                #x and y coordinates for each tile
                testPosX, testPosY = self.tileDict.get(testCase)
                if testPosX - 24 < self.x < testPosX + 24 and testPosY - 24 < self.y < testPosY + 24: 
                    self.x, self.y = 0, 0
                    sound.play_effect('8ve:8ve-beep-shinymetal')
                    if self.gameStart:
                        found = True
                    #tile that user touched
                    tileSelected = testCase
                    break
            if found:
                break
        if found:
            #check if user touched on the mine
            if self.board[int(tileSelected[1])][int(tileSelected[0])] is "#":
                self.gameStart = False
                self.gameStatus = 'lose'
            else:
            #else reveal the number of mines that surround the tile
                if self.board[int(tileSelected[1])][int(tileSelected[0])] is not "#":
                    self.board = zeroScanning(self.board, (int(tileSelected[0]), int(tileSelected[1])))
            self.foundSpace = False
            #check if all tiles are revealed
            for row in self.board:
                for tile in row:
                    if tile is '-':
                        self.foundSpace = True
                        break
                if self.foundSpace:
                    break
            #if there is no empty tile left = win!
            if self.foundSpace == False:
                self.gameStatus = 'win'
                self.gameStart = False
            if self.gameStart:
                self.displayBoard()
            #if game ends
            else:
                #reveals the mine
                self.cheat = True
                self.gameStart = False
                self.displayBoard()
                if self.gameStatus == 'lose':
                    self.statusLabel = LabelNode('LOSE!', ('Anantason', 25), position = (self.size.x / 2, 750), scale = 3, color = '#ff0000')
                if self.gameStatus == 'win':
                    self.statusLabel = LabelNode('WIN!', ('Anantason', 25), position = (self.size.x / 2, 750), scale = 3, color = '#7aff13')
                self.add_child(self.statusLabel)
        #reset the touch inout
        self.x, self.y = 0, 0
    
def countMines(board, coor):
    tileX, tileY = coor
    mineCount = 0
    #check surrounding tiles
    for y in range(-1, 2):
        for x in range(-1, 2):
            try:
                #prevent of negative index
                if int(tileX) + x != -1 and int(tileY) + y != -1:
                    if board[int(tileY) + y][int(tileX) + x] == "#":
                        mineCount += 1
            except IndexError:
                pass
    return str(mineCount)
                
def zeroScanning(board, coordinate):
    PosX, PosY = coordinate
    board[PosY][PosX] = countMines(board, (PosX, PosY))
    if countMines(board, (PosX, PosY)) == '0':
        for testX in range(-1, 2):
            for testY in range(-1, 2):       
                PosX1 = PosX + testX
                PosY1 = PosY + testY
                try:
                    if (PosX1 != -1 and PosY1 != -1):
                        if countMines(board, (PosX1, PosY1)) == "0" and board[PosY1][PosX1] != '0':
                            zeroScanning(board, (PosX1, PosY1))
                        else:
                            board[PosY1][PosX1] = countMines(board, (PosX1, PosY1))
                except IndexError:
                    pass
    return board
        
if __name__ == '__main__':
    run(App(), LANDSCAPE) ```

Here is the updated one. I tried to make this game work on every screen sizes and add menu interface.
https://github.com/Tonnoaw/game

@mikael Can you recommend me what is the next game should I do? For me to practice coding.

@mikael Thanks for your suggestions, In my next projects I will try experiment how to get all of my game working properly on all of screen sizes!

Thanks guys, I will study about shader and effect more Thanks!

I created 2D space shooting game
I want your suggestion from any experts or anyone. I have just learned Python for a month and I want some suggestions to improve my coding skills.
I test and run this script on iPad

from scene import *
import sound
import random
import math
A = Action

class Laser(SpriteNode):
    def __init__(self, txture, object, **kwargs):
        SpriteNode.__init__(self, txture, **kwargs)
        self.shooter = object

class Heart(SpriteNode):
    def __init__(self, **kwargs):
        SpriteNode.__init__(self, 'plf:HudHeart_full', **kwargs)

class Enemy(SpriteNode):
    def __init__(self, txture, **kwargs):
        SpriteNode.__init__(self, txture, **kwargs)
        self.time = 0
        allow_move = random.choice(('x', 'y'))
        self.allow_move = allow_move
        
class MyScene (Scene):
    def setup(self):
        self.move = 'up'; self.player_score = 0; self.touch_id_location = {}; self.touched = False;
        self.laser_on_screen = []; self.enemy_on_screen = []; self.player_health = 100; self.game_playing = True
        self.heart_on_screen = []; self.shown = False
        for x in range(int((self.size.x / 128)) + 1):
            for y in range(int((self.size.y / 128)) + 1):
                bg = SpriteNode(Texture('spc:BackgroundBlue'), position = (x * 128, y *128)); self.add_child(bg)
        self.score = LabelNode(f'Score: {self.player_score}', ('<System-Bold>', 30), position = (120, self.size.h - 30)); self.add_child(self.score)
        self.player_health_label = LabelNode(f'Health: {self.player_health}', ('<System-Bold>', 30), position = (self.size.w - 120, self.size.h - 30)); self.add_child(self.player_health_label)
        self.player = SpriteNode(Texture('spc:PlayerShip1Green'), position = (self.size.w / 2, self.size.h / 2))
        self.add_child(self.player)
        self.joy_layout = SpriteNode(Texture('iow:ios7_circle_outline_256'), position = (160, 160), alpha = 0.25, scale = 1)
        self.add_child(self.joy_layout)
        self.shoot_button = SpriteNode(Texture('iow:ios7_circle_filled_256'), position = (self.size.w - 160, 160), scale = 0.5, alpha = 0.25); self.add_child(self.shoot_button)
    
    def update(self):
        if self.game_playing:
            if self.touched:
                touch_location = self.touch_id_location.get(self.touch_in_joy)
                self.move_ship()
            if len(self.laser_on_screen) > 0:
                for laser in self.laser_on_screen:
                    if laser.position.x > self.size.w or laser.position.y > self.size.h or laser.position.x < 0 or laser.position.y < 0 :
                        self.laser_on_screen.remove(laser)
                        laser.remove_from_parent()
            self.spawn_enemy()
            self.check_laser_collision()
            self.score.text = f'Score: {self.player_score}'
            self.player_health_label.text = f'Health: {self.player_health}'
            self.move_enemy()
            self.spawn_heart_pack()
            self.check_player_get_heart()
        if self.player_health <= 0:
            self.game_playing = False
            self.joy_layout.remove_from_parent()
            self.shoot_button.remove_from_parent()
            for enemy in self.enemy_on_screen:
                enemy.remove_from_parent()
            for laser in self.laser_on_screen:
                laser.remove_from_parent()
            for heart in self.heart_on_screen:
                heart.remove_from_parent()
            self.player.remove_from_parent()
            if not self.shown:
                self.lose_scene()
                self.shown = True
    
    def lose_scene(self):
        sound.play_effect('arcade:Explosion_4')
        self.lose_label = LabelNode('LOSE!', ('<System-Bold>', 60), position = (self.size.w /2, self.size.h / 2)); self.add_child(self.lose_label)
        self.score_label = LabelNode(f'Score: {self.player_score}', ('<System-Bold>', 50), position = (self.size.w /2, self.size.h / 2 - 100)); self.add_child(self.score_label)
            
    
    def check_player_get_heart(self):
        for heart in self.heart_on_screen:
            if self.player.position in heart.frame:
                self.heart_on_screen.remove(heart)
                heart.remove_from_parent()
                sound.play_effect('arcade:Powerup_1')
                self.player_health += 15
                        
    def touch_began(self, touch):
        self.touch_id_location[touch.touch_id] = touch.location
        if touch.location in self.joy_layout.frame and not self.touched:
            self.joy_layout.run_action(A.sequence(A.scale_to(1.25, 0.025)))
            self.joy_layout.position = touch.location
            self.touch_in_joy = touch.touch_id
            self.joy = SpriteNode(Texture('iow:ios7_circle_filled_256'), position = touch.location, alpha = 0.25, scale = 0.25)
            self.add_child(self.joy)
            self.test = SpriteNode(Texture('iow:ios7_circle_filled_256'), position = touch.location, scale = 0.25)
            self.add_child(self.test)
            self.touched = True
            
        if touch.location in self.shoot_button.frame:
            sound.play_effect('digital:Laser2')
            self.shoot_button.run_action(A.sequence(A.scale_to(0.4, 0.05), A.scale_to(0.5, 0.05)))
            self.shoot_laser(self.player.position, 'spc:LaserBlue9', self.player, self.move)
            
            
    def touch_moved(self, touch):
        self.touch_id_location[touch.touch_id] = touch.location
        try:
            if touch.touch_id == self.touch_in_joy:
                self.joy.position = touch.location
        except AttributeError:
            pass
            
    def touch_ended(self, touch):
        self.touch_id_location.pop(touch.touch_id)
        try:
            if touch.touch_id == self.touch_in_joy:
                self.joy.remove_from_parent()
                self.joy_layout.run_action(A.sequence(A.scale_to(1, 0.025)))
                self.joy_layout.position = (160, 160)
                self.touched = False
                self.test.remove_from_parent()
        except AttributeError:
            pass
            
    def move_ship(self):
        move_attributes = {
            'up': ((0, 6), math.radians(0)),
            'down': ((0, -6), math.radians(180)),
            'left': ((-6, 0), math.radians(90)),
            'right': ((6, 0), math.radians(270))
        }
        touch_position = self.touch_id_location.get(self.touch_in_joy)
        if touch_position not in self.test.frame:
            if self.test.position.x - 64 < touch_position.x < self.test.position.x + 64:
                if touch_position.y > self.test.position.y:
                    self.move = 'up'
                else:
                    self.move = 'down'
            if self.test.position.y - 64 < touch_position.y < self.test.position.y + 64:
                if touch_position.x > self.test.position.x:
                    self.move = 'right'
                else:
                    self.move = 'left'
                    
        m = move_attributes.get(self.move)
        try:
            x = max(0, min(self.size.w, self.player.position.x + m[0][0]))
            y = max(0, min(self.size.y, self.player.position.y + m[0][1]))
            self.player.position = (x, y)
            self.player.run_action(A.sequence(A.rotate_to(m[1], 0.025)))
        except TypeError:
            pass
    
    def shoot_laser(self, position, txture, object, orient):
        if object == self.player:
            laser_attributes = {
                'up': ((0, 500), math.radians(0), (0, 64)),
                'down': ((0, -500), math.radians(180), (0, -64)),
                'left': ((-500, 0), math.radians(90), (-64, 0)),
                'right': ((500, 0), math.radians(270), (64, 0))
            }
        else:
            laser_attributes = {
                'up': ((0, 250), math.radians(0), (0, 64)),
                'down': ((0, -250), math.radians(180), (0, -64)),
                'left': ((-250, 0), math.radians(90), (-64, 0)),
                'right': ((250, 0), math.radians(270), (64, 0))
                }
        l = laser_attributes.get(orient)
        x, y = l[0]
        laser = Laser(txture, object); laser.position = (object.position.x + l[2][0], object.position.y + l[2][1])
        self.laser_on_screen.append(laser); self.add_child(laser)
        laser.run_action(A.sequence(A.rotate_to(l[1], 0.00001), A.repeat_forever(A.move_by(x, y))))
    
    def spawn_enemy(self):
        self.difficulty = 0.008 + self.player_score * 0.0000002
        if random.random() < self.difficulty and len(self.enemy_on_screen) <= 8:
            index = random.choice([1, 0])
            coor = [(random.uniform(200, self.size.w), random.uniform(self.size.h - 200, self.size.h)), (random.uniform(200, self.size.w - 200), random.uniform(0 ,200))]
            x, y = coor[index]
            txture = random.choice(['spc:EnemyGreen4', 'spc:EnemyBlack4', 'spc:EnemyBlue4'])
            enemy = Enemy(txture)
            if index == 0:
                 enemy.position = (self.size.w / 2, self.size.h + 48)
            else:
                enemy.position = (self.size.w / 2, -48)
            enemy.run_action(A.sequence(A.move_to(x, y, 1)))
            self.add_child(enemy) 
            self.enemy_on_screen.append(enemy)
    
    def spawn_heart_pack(self):
        difficulty = self.difficulty * 0.05
        if random.random() < difficulty:
            posX, posY =  (random.uniform(self.size.w - 300, 300), random.uniform(self.size.h - 300, 300))
            self.heart = Heart(); self.heart.position = (posX, posY); self.heart.scale = 0.8
            self.add_child(self.heart); self.heart_on_screen.append(self.heart)
           
    def check_laser_collision(self):
        for laser in self.laser_on_screen:
            for enemy in self.enemy_on_screen:
                if laser.position in enemy.frame:
                    self.enemy_on_screen.remove(enemy)
                    enemy.remove_from_parent()
                    try:
                        self.laser_on_screen.remove(laser)
                    except ValueError:
                        pass
                    laser.remove_from_parent()
                    self.player_score += 80
                    sound.play_effect('arcade:Explosion_1')
                    self.explosion_effect(enemy.position)
            if laser.position in self.player.frame and (laser.shooter in self.enemy_on_screen):
                sound.play_effect('game:Error')
                try:
                    self.laser_on_screen.remove(laser)
                except ValueError:
                    pass
                    
                self.player_health -= 5
                laser.remove_from_parent()
                for i in range(6):
                    particle = SpriteNode(Texture('spc:MeteorBrownMed2'), position = self.player.position, scale=random.uniform(0.3, 0.5))
                    actions1 = [A.group(A.move_by(random.uniform(-64, 64), random.uniform(-64, 64), random.uniform(0.4, 0.9)), A.rotate_by(random.uniform(1, 3), 0.4)), A.wait(0.4), A.fade_to(0, 0.3)] 
                    self.add_child(particle); particle.run_action(A.sequence(actions1))
                    
                   
    def explosion_effect(self, position):
        index = 0
        time = [0.0, 0.1, 0.2, 0.3, 0.4]
        for i in range(4):
            explosion_texture = random.choice(('shp:Explosion01', 'shp:Explosion04', 'shp:Explosion00'))
            ex_position = (position.x + random.uniform(-24, 24), position.y + random.uniform(-24, 24))
            pa_position = (position.x + random.uniform(-16, 16), position.y + random.uniform(-16, 16))
            actions = [A.wait(time[index]), A.fade_to(1, 0.04), A.wait(0.06), A.remove()]
            exploded = SpriteNode(Texture(explosion_texture), position = ex_position, scale = random.uniform(0.25, 0.5), alpha = 0)
            self.add_child(exploded); exploded.run_action(A.sequence(actions))
            index += 1
            particle = SpriteNode(Texture('spc:MeteorBrownMed2'), position = pa_position, scale=random.uniform(0.5, 0.8))
            actions1 = [A.group(A.move_by(random.uniform(-64, 64), random.uniform(-64, 64), random.uniform(0.4, 0.9)), A.rotate_by(random.uniform(1, 3), 0.4)), A.wait(0.4), A.fade_to(0, 0.3)] 
            self.add_child(particle); particle.run_action(A.sequence(actions1))

    def move_enemy(self):
        orient = ''
        for enemy in self.enemy_on_screen:
            if not self.can_shoot_laser(enemy):      
                if enemy.position.y > self.player.position.y and enemy.allow_move == "y":
                    orient = 'down'
                    self.enemy_moving(orient, enemy)
                elif enemy.allow_move == 'y':
                    orient = 'up'
                    self.enemy_moving(orient, enemy)
                if enemy.position.x > self.player.position.x and enemy.allow_move == "x":
                    orient = 'left'
                    self.enemy_moving(orient, enemy)
                elif enemy.allow_move == 'x':
                    orient = 'right'
                    self.enemy_moving(orient, enemy)
                    
            
    def enemy_moving(self, orient, enemy):
        move_attributes = {
            'up': ((0, 2.5), math.radians(0)),
            'down': ((0, -2.5), math.radians(180)),
            'left': ((-2.5, 0), math.radians(90)),
            'right': ((2.5, 0), math.radians(270))
        }
        try:
            m = move_attributes.get(orient)
            x = max(0, min(self.size.w, enemy.position.x + m[0][0]))
            y = max(0, min(self.size.y, enemy.position.y + m[0][1]))
            enemy.position = (x, y)
            enemy.run_action(A.sequence(A.rotate_to(m[1], 0.025)))
        except (TypeError):
            pass
                 
    def can_shoot_laser(self, enemy):
        aligned = False
        if self.player.position.x - 64 < enemy.position.x < self.player.position.x + 64:
            enemy.time += 1
            aligned = True
            if enemy.position.y > self.player.position.y:
                orient = 'down'
            else:
                orient = 'up'
                
        if self.player.position.y - 64 < enemy.position.y < self.player.position.y + 64:
            enemy.time += 1
            aligned = True
            if enemy.position.x > self.player.position.x:
                orient = 'left'
            else:
                orient = 'right'
    
        if enemy.time > 60:
            enemy.time = 0
            self.shoot_laser(enemy.position, 'spc:LaserRed9', enemy, orient)
            sound.play_effect('arcade:Laser_5')
            if enemy.allow_move == 'x':
                enemy.allow_move = 'y'
            else:
                enemy.allow_move = 'x'
        return aligned
        
if __name__ == '__main__':
    run(MyScene(), show_fps=False) ```

Create effect in scene module?
I created 2D shooting game. I want to add smoke effect trailing after the player.
So how can I create smoke effect and fade out after some duration.

from scene import *
import sound
import random
import math
A = Action

class Button(SpriteNode):
    def __init__(self, txt, **kwargs):
        SpriteNode.__init__(self, txt, **kwargs)


class Laser(SpriteNode):
    def __init__(self, **kwargs):
        SpriteNode.__init__(self, 'spc:LaserBlue9', **kwargs)
        
            
class Enemy(SpriteNode):
    def __init__(self, **kwargs):
        img = random.choice(['spc:EnemyBlack1', 'spc:EnemyBlue2', 'spc:EnemyGreen5'])
        SpriteNode.__init__(self, img, **kwargs)    
        
        
class MyScene (Scene):
    def setup(self):
        x = get_screen_size()
        self.laser_on_screen = []; self.touched = ''; self.touch_id_locations = {}; self.ship_orient = 'up'
        self.enemy_list = []
        bg = Node(parent=self)
        for x in range(int(self.size.w/ 128) + 1):
            for y in range(int(self.size.h / 128) + 1):
                tile = SpriteNode(Texture('spc:BackgroundPurple'), position = (x * 128, y * 128)); bg.add_child(tile)
        self.player = SpriteNode(Texture('spc:PlayerShip1Blue'), position = (self.size.w / 2, self.size.h / 2))
        self.add_child(self.player)
        self.button_down = Button('iob:arrow_down_a_256', scale= 0.5);self.button_down.position = (180, 120); self.add_child(self.button_down)
        self.button_up = Button('iob:arrow_up_a_256', scale= 0.5);self.button_up.position = (180, 280); self.add_child(self.button_up)
        self.button_left = Button('iob:arrow_left_a_256', scale= 0.5);self.button_left.position = (100, 200); self.add_child(self.button_left)
        self.button_right = Button('iob:arrow_right_a_256', scale= 0.5);self.button_right.position = (260, 200); self.add_child(self.button_right)
        self.button_shoot = Button('iob:ios7_circle_filled_256', scale= 0.5);self.button_shoot.position = (self.size.w - 180, 200); self.add_child(self.button_shoot)
    def did_change_size(self):
        pass
    
    def update(self):
        speed = 5
        self.laser_position_orientation = {
            'up': ((self.player.position.x, self.player.position.y + 32), 0, 2000, 0.0),
            'down': ((self.player.position.x, self.player.position.y - 32), 0, -2000, 3.14159),
            'right': ((self.player.position.x + 32, self.player.position.y), 2000, 0, 4.71239),
            'left': ((self.player.position.x - 32, self.player.position.y), -2000, 0, 1.5708),
        }
        for location in self.touch_id_locations.values():
            if location in self.button_up.frame:
                self.ship_orient = 'up'
                self.player.position = (self.player.position.x, self.player.position.y + speed)
                self.player.rotation = 0.0
            if location in self.button_down.frame:
                self.ship_orient = 'down'
                self.player.position = (self.player.position.x, self.player.position.y - speed)
                self.player.rotation = 3.14159
            if location in self.button_left.frame:
                self.ship_orient = 'left'
                self.player.position = (self.player.position.x - speed, self.player.position.y)
                self.player.rotation = 1.5708
            if location in self.button_right.frame:
                self.ship_orient = 'right'
                self.player.position = (self.player.position.x + speed, self.player.position.y)
                self.player.rotation = 4.71239
        for laser in self.laser_on_screen:
            if laser.position.x > self.size.w or laser.position.x < 0 or laser.position.y > self.size.h or laser.position.y < 0:
                laser.remove_from_parent()
                self.laser_on_screen.remove(laser)
        if random.random() < 0.0055:
            self.spawn_enemy()
        self.check_laser_collision()
    
                
    def touch_began(self, touch):
        self.touch_id_locations[touch.touch_id] = touch.location
        if touch.location in self.button_shoot.frame:
            laser_data_pack = self.laser_position_orientation.get(self.ship_orient)
            sound.play_effect('digital:Laser1')
            self.touch_id_locations.pop(touch.touch_id)
            self.laser = Laser()
            self.laser.position = laser_data_pack[0]; self.add_child(self.laser); self.laser.rotation = laser_data_pack[3]
            self.laser_on_screen.append(self.laser)
            self.laser.run_action(Action.sequence(Action.move_by(laser_data_pack[1], laser_data_pack[2])))
            
    def touch_moved(self, touch):
        pass
        
    def touch_ended(self, touch):
        try:
            self.touch_id_locations.pop(touch.touch_id)
        except KeyError:
            pass
            
    def get_key(self, val): 
        for key, value in self.touch_id_locations.items(): 
             if val == value: 
                 return key 
        
    def spawn_enemy(self):
        enemy_position = (random.randint(0, self.size.w - 1), random.randint(0, self.size.h))
        self.enemy = Enemy(); self.enemy.position = enemy_position; self.add_child(self.enemy)
        self.enemy_list.append(self.enemy)
    
    def check_laser_collision(self):
        for laser in self.laser_on_screen:
            for enemy in self.enemy_list:
                if laser.position in enemy.frame:
                    enemy.remove_from_parent()
                    laser.remove_from_parent()
                    self.enemy_list.remove(enemy)
                    try:
                        self.laser_on_screen.remove(laser)
                    except ValueError:
                        pass
                    sound.play_effect('arcade:Explosion_2')
                    

if __name__ == '__main__':
    run(MyScene(),DEFAULT_ORIENTATION,show_fps=False, multi_touch = True) ```

@mikael Thanks for your suggestions . I'll apply your suggestions in my next projects and practices

I created 2D minesweeper game
I've learned Python for a month and I decided to create 2D minesweeper game using scene module in Pythonista. I want some recommendations from any experts to make my code more cleaner and remove some unnecessary steps.
Also try out my game :)

from scene import *
import sound
import random

#randomly install the mines on the board
def setTheMine(board):
        for i in range(int(len(board))):
            board[random.randint(0,len(board) - 1)][random.randint(0,len(board) - 1)] = "#"
        return board
        
class App(Scene):    
    def setup(self):
        self.x, self.y = 0, 0
        #turn cheat to True to see the mines while playing
        self.cheat = False
        #create 2d matrix board
        # '-' = empty space and '#' = mine
        self.board = [["-" for i in range(10)] for i in range(10)]
        self.background_color = '#828adb'
        #install the mine
        self.board = setTheMine(self.board)
        #assign tile coordinates  
        self.tileDict = {}
        for row in range(len(self.board)):
            for block in range(len(self.board[0])):
                posist = str(block)+str(row)
                posX_value = int(self.size.w / 2) - int((len(self.board) * 48) / 2) + (48 * block)
                posY_value = int(self.size.h / 2) + int((len(self.board) * 48) / 2) - (48 * row)
                x = self.tileDict.setdefault(posist, (posX_value, posY_value))
        #tile color according values
        self.tileColor = {
            "0": 'pzl:Green3',
            "1": 'pzl:Blue3',
            "2": 'pzl:Yellow3',
            "3": 'pzl:Red3',
            "4": 'pzl:Red3',
            "5": 'pzl:Red3',
            "6": 'pzl:Red3',
            "7": 'pzl:Red3',
            "-": 'pzl:Gray3',
            "#": 'pzl:Gray3'
        }
        self.labelFont = ('Adidas Unity', 50)
        self.gameStart = True
        #display 2D graphic board
        self.displayBoard()
        
    def touch_began(self, touch):
        self.x, self.y = touch.location
        
    def displayBoard(self):
        grid = Node(parent=self)
        row1 = 0
        for row in self.board:
            column = 0
            for block in row:
                posX , posY = self.tileDict.get(str(column)+str(row1))
                tile = SpriteNode(Texture(self.tileColor.get(block)), position = (posX, posY), scale = 1.5)
                grid.add_child(tile)
                if self.cheat:
                    if block == '#':
                        self.mine = SpriteNode(Texture('emj:Bomb'), position = (posX, posY), scale = 0.5)
                        self.add_child(self.mine)
                if block is not "-" and block is not "#":
                    self.mineLabel = LabelNode(self.board[row1][column], self.labelFont, position = (posX, posY), scale = 0.5)
                    self.add_child(self.mineLabel)
                column += 1
            row1 += 1
                         
    def update(self):
        #check for touch input. is touch input on the board 
        found = False
        for y in range(len(self.board)):
            for x in range(len(self.board[0])):
                testCase = str(x)+str(y)
                #x and y coordinates for each tile
                testPosX, testPosY = self.tileDict.get(testCase)
                if testPosX - 24 < self.x < testPosX + 24 and testPosY - 24 < self.y < testPosY + 24: 
                    self.x, self.y = 0, 0
                    sound.play_effect('8ve:8ve-beep-shinymetal')
                    if self.gameStart:
                        found = True
                    #tile that user touched
                    tileSelected = testCase
                    break
            if found:
                break
        if found:
            #check if user touched on the mine
            if self.board[int(tileSelected[1])][int(tileSelected[0])] is "#":
                self.gameStart = False
                self.gameStatus = 'lose'
            else:
            #else reveal the number of mines that surround the tile
                if self.board[int(tileSelected[1])][int(tileSelected[0])] is not "#":
                    self.board = zeroScanning(self.board, (int(tileSelected[0]), int(tileSelected[1])))
            self.foundSpace = False
            #check if all tiles are revealed
            for row in self.board:
                for tile in row:
                    if tile is '-':
                        self.foundSpace = True
                        break
                if self.foundSpace:
                    break
            #if there is no empty tile left = win!
            if self.foundSpace == False:
                self.gameStatus = 'win'
                self.gameStart = False
            if self.gameStart:
                self.displayBoard()
            #if game ends
            else:
                #reveals the mine
                self.cheat = True
                self.gameStart = False
                self.displayBoard()
                if self.gameStatus == 'lose':
                    self.statusLabel = LabelNode('LOSE!', ('Anantason', 25), position = (self.size.x / 2, 750), scale = 3, color = '#ff0000')
                if self.gameStatus == 'win':
                    self.statusLabel = LabelNode('WIN!', ('Anantason', 25), position = (self.size.x / 2, 750), scale = 3, color = '#7aff13')
                self.add_child(self.statusLabel)
        #reset the touch inout
        self.x, self.y = 0, 0
    
def countMines(board, coor):
    tileX, tileY = coor
    mineCount = 0
    #check surrounding tiles
    for y in range(-1, 2):
        for x in range(-1, 2):
            try:
                #prevent of negative index
                if int(tileX) + x != -1 and int(tileY) + y != -1:
                    if board[int(tileY) + y][int(tileX) + x] == "#":
                        mineCount += 1
            except IndexError:
                pass
    return str(mineCount)
                
def zeroScanning(board, coordinate):
    PosX, PosY = coordinate
    board[PosY][PosX] = countMines(board, (PosX, PosY))
    if countMines(board, (PosX, PosY)) == '0':
        for testX in range(-1, 2):
            for testY in range(-1, 2):       
                PosX1 = PosX + testX
                PosY1 = PosY + testY
                try:
                    if (PosX1 != -1 and PosY1 != -1):
                        if countMines(board, (PosX1, PosY1)) == "0" and board[PosY1][PosX1] != '0':
                            zeroScanning(board, (PosX1, PosY1))
                        else:
                            board[PosY1][PosX1] = countMines(board, (PosX1, PosY1))
                except IndexError:
                    pass
    return board
        
if __name__ == '__main__':
    run(App(), LANDSCAPE) ```