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import random
import arcade

SPRITE_SCALING = 0.75

WINDOW_WIDTH = 1280
WINDOW_HEIGHT = 720
WINDOW_TITLE = "Camera"

# Скорость плавного движения камеры
CAMERA_SPEED = 0.1

# Скорость движения игрока
PLAYER_MOVEMENT_SPEED = 7
PLAYER_MOVEMENT_DIAGONAL_SPEED = PLAYER_MOVEMENT_SPEED / 2 ** 0.5

class GameView(arcade.View):
	def __init__(self):
		super().__init__()

# Списки спрайтов
		self.player_list = None
		self.wall_list = None

# Спрайт игрока
		self.player_sprite = None

# Физический движок (для столкновений со стенами)
		self.physics_engine = None

# Храним информацию о том, какие клавиши нажаты
		self.left_pressed = False
		self.right_pressed = False
		self.up_pressed = False
		self.down_pressed = False

# Две камеры — одна для игрового мира, другая для GUI game user interface
		self.camera_sprites = arcade.Camera2D()
		self.camera_gui = arcade.Camera2D()

def setup(self):
		# Создаём списки спрайтов
		self.player_list = arcade.SpriteList()
		self.wall_list = arcade.SpriteList()

self.background_color = arcade.color.SKY_BLUE

# Игрок
		self.player_sprite = arcade.Sprite(
				":resources:images/animated_characters/female_person/femalePerson_idle.png",
				scale=1,
		)
		self.player_sprite.center_x = 256
		self.player_sprite.center_y = 512
		self.player_list.append(self.player_sprite)

# Стены
		wall_texture = ":resources:images/tiles/stoneCenter.png"

# Создаём много стен столбцами и рядами
		for _ in range(50):
			# случайная позиция в пределах уровня
			x = random.randint(100, 1600)
			y = random.randint(0, 1500)

wall = arcade.Sprite(wall_texture, scale=SPRITE_SCALING)
			wall.center_x = x
			wall.center_y = y
			self.wall_list.append(wall)

# Включаем физику игрок + стены
		self.physics_engine = arcade.PhysicsEngineSimple(self.player_sprite, self.wall_list)

def on_draw(self):
		self.clear()
		# Включаем камеру игрового мира
		self.camera_sprites.use()

# Рисуем стены и игрока
		self.wall_list.draw()
		self.player_list.draw()

# Включаем GUI-камеру (она не скроллится)
		self.camera_gui.use()

# Пишем текст (положение камеры)
		text = f"Положение камеры: ({self.camera_sprites.position[0]:5.1f}, " \
				f"{self.camera_sprites.position[1]:5.1f})"
		arcade.draw_text(text, 10, 10, arcade.color.WHITE, 20)

def on_key_press(self, key, modifiers):
		if key == arcade.key.UP:
			self.up_pressed = True
		elif key == arcade.key.DOWN:
			self.down_pressed = True
		elif key == arcade.key.LEFT:
			self.left_pressed = True
		elif key == arcade.key.RIGHT:
			self.right_pressed = True

def on_key_release(self, key, modifiers):
		if key == arcade.key.UP:
			self.up_pressed = False
		elif key == arcade.key.DOWN:
			self.down_pressed = False
		elif key == arcade.key.LEFT:
			self.left_pressed = False
		elif key == arcade.key.RIGHT:
			self.right_pressed = False

def on_update(self, delta_time):
		# Сбрасываем скорость игрока
		self.player_sprite.change_x = 0
		self.player_sprite.change_y = 0

# Движение вверх/вниз
		# Определяем направления движения по осям
		move_x = 0
		move_y = 0

if self.up_pressed and not self.down_pressed:
			move_y = 1
		elif self.down_pressed and not self.up_pressed:
			move_y = -1

if self.left_pressed and not self.right_pressed:
			move_x = -1
		elif self.right_pressed and not self.left_pressed:
			move_x = 1

# Если движение есть по двум осям сразу (диагональ) — берем скорость диагональную
		if move_x != 0 and move_y != 0:
			self.player_sprite.change_x = move_x * PLAYER_MOVEMENT_DIAGONAL_SPEED
			self.player_sprite.change_y = move_y * PLAYER_MOVEMENT_DIAGONAL_SPEED
		else:
			self.player_sprite.change_x = move_x * PLAYER_MOVEMENT_SPEED
			self.player_sprite.change_y = move_y * PLAYER_MOVEMENT_SPEED

# Обновляем физический движок
		self.physics_engine.update()

# Двигаем камеру за игроком
		self.scroll_to_player()

def scroll_to_player(self):
		""" Плавное движение камеры за игроком """

# Целевая позиция — координаты игрока
		position = (self.player_sprite.center_x, self.player_sprite.center_y)

# Плавное движение: позиция = lerp(текущая, целевая)
		self.camera_sprites.position = arcade.math.lerp_2d(
			self.camera_sprites.position,
			position,
			CAMERA_SPEED
		)

def on_resize(self, width: int, height: int):
		super().on_resize(width, height)
		self.camera_sprites.match_window()

if __name__ == "__main__":
	window = arcade.Window(WINDOW_WIDTH, WINDOW_HEIGHT, WINDOW_TITLE, resizable=True)
	game = GameView()
	game.setup()
	window.show_view(game)
	arcade.run()

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