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274 | """
Camera Example
Artwork from: https://kenney.nl
Tiled available from: https://www.mapeditor.org/
If Python and Arcade are installed, this example can be run from the command line with:
python -m arcade.examples.camera_example
"""
import time
import arcade
TILE_SCALING = 0.5
PLAYER_SCALING = 0.5
SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600
SCREEN_TITLE = "Camera Example"
SPRITE_PIXEL_SIZE = 128
GRID_PIXEL_SIZE = SPRITE_PIXEL_SIZE * TILE_SCALING
# How many pixels to keep as a minimum margin between the character
# and the edge of the screen.
VIEWPORT_MARGIN_TOP = 60
VIEWPORT_MARGIN_BOTTOM = 60
VIEWPORT_RIGHT_MARGIN = 270
VIEWPORT_LEFT_MARGIN = 270
# Physics
MOVEMENT_SPEED = 5
JUMP_SPEED = 23
GRAVITY = 1.1
# Map Layers
LAYER_NAME_PLATFORMS = "Platforms"
LAYER_NAME_COINS = "Coins"
LAYER_NAME_BOMBS = "Bombs"
class MyGame(arcade.Window):
"""Main application class."""
def __init__(self):
"""
Initializer
"""
super().__init__(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE, resizable=True)
# Our TileMap Object
self.tile_map = None
# Our Scene Object
self.scene = None
# Set up the player
self.score = 0
self.player_sprite = None
self.physics_engine = None
self.top_of_map = 0
self.end_of_map = 0
self.game_over = False
self.last_time = None
self.frame_count = 0
self.fps_message = None
# Cameras
self.camera = None
self.gui_camera = None
self.shake_offset_1 = 0
self.shake_offset_2 = 0
self.shake_vel_1 = 0
self.shake_vel_2 = 0
# Text
self.text_fps = arcade.Text(
"",
start_x=10,
start_y=40,
color=arcade.color.BLACK,
font_size=14,
)
self.text_score = arcade.Text(
f"Score: {self.score}",
start_x=10,
start_y=20,
color=arcade.color.BLACK,
font_size=14,
)
def setup(self):
"""Set up the game and initialize the variables."""
# Map name
map_name = ":resources:tiled_maps/level_1.json"
# Layer Specific Options for the Tilemap
layer_options = {
LAYER_NAME_PLATFORMS: {
"use_spatial_hash": True,
},
LAYER_NAME_COINS: {
"use_spatial_hash": True,
},
LAYER_NAME_BOMBS: {
"use_spatial_hash": True,
},
}
# Load in TileMap
self.tile_map = arcade.load_tilemap(map_name, TILE_SCALING, layer_options)
# Initiate New Scene with our TileMap, this will automatically add all layers
# from the map as SpriteLists in the scene in the proper order.
self.scene = arcade.Scene.from_tilemap(self.tile_map)
# Set up the player
self.player_sprite = arcade.Sprite(
":resources:images/animated_characters/female_person/femalePerson_idle.png",
PLAYER_SCALING,
)
# Starting position of the player
self.player_sprite.center_x = 196
self.player_sprite.center_y = 128
self.scene.add_sprite("Player", self.player_sprite)
self.camera = arcade.Camera(SCREEN_WIDTH, SCREEN_HEIGHT)
self.gui_camera = arcade.Camera(SCREEN_WIDTH, SCREEN_HEIGHT)
# Center camera on user
self.pan_camera_to_user()
# Calculate the right edge of the my_map in pixels
self.top_of_map = self.tile_map.height * GRID_PIXEL_SIZE
self.end_of_map = self.tile_map.width * GRID_PIXEL_SIZE
# --- Other stuff
# Set the background color
if self.tile_map.background_color:
self.background_color = self.tile_map.background_color
# Keep player from running through the wall_list layer
self.physics_engine = arcade.PhysicsEnginePlatformer(
self.player_sprite,
self.scene.get_sprite_list(LAYER_NAME_PLATFORMS),
gravity_constant=GRAVITY,
)
self.game_over = False
def on_resize(self, width, height):
"""Resize window"""
self.camera.resize(width, height)
self.gui_camera.resize(width, height)
def on_draw(self):
"""Render the screen."""
self.clear()
self.camera.use()
# Draw our Scene
self.scene.draw()
self.gui_camera.use()
# Update fps text periodically
if self.last_time and self.frame_count % 60 == 0:
fps = 1.0 / (time.time() - self.last_time) * 60
self.text_fps.text = f"FPS: {fps:5.2f}"
self.text_fps.draw()
if self.frame_count % 60 == 0:
self.last_time = time.time()
# Draw Score
self.text_score.draw()
# Draw game over
if self.game_over:
x = 200 + self.camera.position[0]
y = 200 + self.camera.position[1]
arcade.draw_text("Game Over", x, y, arcade.color.BLACK, 30)
self.frame_count += 1
def on_key_press(self, key, modifiers):
"""
Called whenever a key is pressed
"""
if key == arcade.key.UP:
if self.physics_engine.can_jump():
self.player_sprite.change_y = JUMP_SPEED
elif key == arcade.key.LEFT:
self.player_sprite.change_x = -MOVEMENT_SPEED
elif key == arcade.key.RIGHT:
self.player_sprite.change_x = MOVEMENT_SPEED
def on_key_release(self, key, modifiers):
"""
Called when the user presses a mouse button.
"""
if key == arcade.key.LEFT or key == arcade.key.RIGHT:
self.player_sprite.change_x = 0
def pan_camera_to_user(self, panning_fraction: float = 1.0):
"""
Manage Scrolling
:param panning_fraction: Number from 0 to 1. Higher the number, faster we
pan the camera to the user.
"""
# This spot would center on the user
screen_center_x = self.player_sprite.center_x - (self.camera.viewport_width / 2)
screen_center_y = self.player_sprite.center_y - (
self.camera.viewport_height / 2
)
if screen_center_x < 0:
screen_center_x = 0
if screen_center_y < 0:
screen_center_y = 0
user_centered = screen_center_x, screen_center_y
self.camera.move_to(user_centered, panning_fraction)
def on_update(self, delta_time):
"""Movement and game logic"""
if self.player_sprite.right >= self.end_of_map:
self.game_over = True
# Call update on all sprites
if not self.game_over:
self.physics_engine.update()
coins_hit = arcade.check_for_collision_with_list(
self.player_sprite, self.scene.get_sprite_list("Coins")
)
for coin in coins_hit:
coin.remove_from_sprite_lists()
self.score += 1
# Bomb hits
bombs_hit = arcade.check_for_collision_with_list(
self.player_sprite, self.scene.get_sprite_list("Bombs")
)
for bomb in bombs_hit:
bomb.remove_from_sprite_lists()
print("Pow")
self.camera.shake((4, 7))
# Pan to the user
self.pan_camera_to_user(panning_fraction=0.12)
# Update score text
self.text_score.text = f"Score: {self.score}"
def main():
"""Get this game started."""
window = MyGame()
window.setup()
arcade.run()
if __name__ == "__main__":
main()
|