"""""
--------------------------------
DO THIS:

1 - Define the Tree Sprite Class:
First, you need to create a class for the tree sprite if you haven't already done so. 
Assuming your trees are part of the decoration group, 
let's create a tree class that inherits from pygame.sprite.Sprite.

class Tree(pygame.sprite.Sprite):
    def __init__(self, img, x, y):
        pygame.sprite.Sprite.__init__(self)
        self.image = img
        self.rect = self.image.get_rect()
        self.rect.midtop = (x + TILE_SIZE // 2, y + (TILE_SIZE - self.image.get_height()))

    def update(self):
        self.rect.x += screen_scroll

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 2 - Add Trees to the Decoration Group:
Assuming that trees are stored in a certain range in your tileset (for example, 
tile 12 represents a tree), you can modify the process_data method to add trees to 
the decoration group.       

def process_data(self, data):
    self.level_length = len(data[0])
    for y, row in enumerate(data):
        for x, tile in enumerate(row):
            if tile >= 0:
                img = img_list[tile]
                img_rect = img.get_rect()
                img_rect.x = x * TILE_SIZE
                img_rect.y = y * TILE_SIZE
                tile_data = (img, img_rect)
                if tile >= 0 and tile <= 8:
                    self.obstacle_list.append(tile_data)
                elif tile >= 9 and tile <= 10:
                    water = Water(img, x * TILE_SIZE, y * TILE_SIZE)
                    water_group.add(water)
                elif tile >= 12 and tile <= 14:
                    tree = Tree(img, x * TILE_SIZE, y * TILE_SIZE)
                    decoration_group.add(tree)
                elif tile >= 15 and tile <= 17:
                    decoration = Decoration(img, x * TILE_SIZE, y * TILE_SIZE)
                    decoration_group.add(decoration)
                elif tile == 18:  # create player
                    player = Soldier('player', x * TILE_SIZE, y * TILE_SIZE, 1.65, 5, 20, 5)
                    health_bar = HealthBar(10, 10, player.health, player.health)
                elif tile == 19:  # create enemies
                    enemy = Soldier('enemy', x * TILE_SIZE, y * TILE_SIZE, 1.65, 2, 20, 0)
                    enemy_group.add(enemy)
                elif tile == 20:  # create ammo box
                    item_box = ItemBox('Ammo', x * TILE_SIZE, y * TILE_SIZE)
                    item_box_group.add(item_box)
                elif tile == 21:  # create grenade box
                    item_box = ItemBox('Grenade', x * TILE_SIZE, y * TILE_SIZE)
                    item_box_group.add(item_box)
                elif tile == 22:  # create health box
                    item_box = ItemBox('Health', x * TILE_SIZE, y * TILE_SIZE)
                    item_box_group.add(item_box)
                elif tile == 23:  # create exit
                    exit = Exit(img, x * TILE_SIZE, y * TILE_SIZE)
                    exit_group.add(exit)

    return player, health_bar

    
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3 - Handle Collision Between Player and Trees:
In the main game loop, you need to check for collisions between the player 
and the trees, and if a collision is detected, remove the tree.

run = True
while run:
    clock.tick(FPS)
    
    if start_game == False:
        # draw menu
        screen.fill(BG)
        if start_button.draw(screen):
            start_game = True
            start_intro = True
        if exit_button.draw(screen):
            run = False
    else:
        # update background
        draw_bg()
        # draw world map
        world.draw()
        # show player health
        health_bar.draw(player.health)
        
        # check for collision with trees and remove tree on collision
        tree_hit_list = pygame.sprite.spritecollide(player, decoration_group, True)
        for tree in tree_hit_list:
            tree.kill()
        
        # update and draw groups
        player.update()
        player.draw()
        enemy_group.update()
        enemy_group.draw(screen)
        bullet_group.update()
        bullet_group.draw(screen)
        grenade_group.update()
        grenade_group.draw(screen)
        explosion_group.update()
        explosion_group.draw(screen)
        item_box_group.update()
        item_box_group.draw(screen)
        decoration_group.update()
        decoration_group.draw(screen)
        water_group.update()
        water_group.draw(screen)
        exit_group.update()
        exit_group.draw(screen)

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False

    pygame.display.update()

    
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    In the pygame.sprite.spritecollide(player, decoration_group, True) 
    function call, the True parameter indicates that the tree sprite 
    should be removed upon collision. This ensures that the tree sprite 
    disappears when the player touches it.


--------------------------------
"""