pymunk_demo_platformer_12.py Diff
pymunk_demo_platformer_12.py
--- /home/docs/checkouts/readthedocs.org/user_builds/arcade-library/checkouts/development/doc/tutorials/pymunk_platformer/pymunk_demo_platformer_11.py
+++ /home/docs/checkouts/readthedocs.org/user_builds/arcade-library/checkouts/development/doc/tutorials/pymunk_platformer/pymunk_demo_platformer_12.py
@@ -77,7 +77,9 @@
class PlayerSprite(arcade.Sprite):
""" Player Sprite """
- def __init__(self):
+ def __init__(self,
+ ladder_list: arcade.SpriteList,
+ hit_box_algorithm: arcade.hitbox.HitBoxAlgorithm):
""" Init """
# Let parent initialize
super().__init__(scale=SPRITE_SCALING_PLAYER)
@@ -90,21 +92,28 @@
# main_path = ":resources:images/animated_characters/zombie/zombie"
# main_path = ":resources:images/animated_characters/robot/robot"
- # Load textures for idle, jump, and fall states
- idle_texture = arcade.load_texture(f"{main_path}_idle.png")
+ idle_texture = arcade.load_texture(f"{main_path}_idle.png", hit_box_algorithm=hit_box_algorithm)
jump_texture = arcade.load_texture(f"{main_path}_jump.png")
- fall_texture = arcade.load_texture(f"{main_path}_fall.png")
- # Make pairs of textures facing left and right
+ fall_texture = arcade.load_texture(f"{main_path}_fall.png")
+
+ # Load textures for idle standing
self.idle_texture_pair = idle_texture, idle_texture.flip_left_right()
self.jump_texture_pair = jump_texture, jump_texture.flip_left_right()
self.fall_texture_pair = fall_texture, fall_texture.flip_left_right()
- # Load textures for walking and make pairs of textures facing left and right
+ # Load textures for walking
self.walk_textures = []
for i in range(8):
texture = arcade.load_texture(f"{main_path}_walk{i}.png")
self.walk_textures.append((texture, texture.flip_left_right()))
+ # Load textures for climbing
+ self.climbing_textures = []
+ texture = arcade.load_texture(f"{main_path}_climb0.png")
+ self.climbing_textures.append(texture)
+ texture = arcade.load_texture(f"{main_path}_climb1.png")
+ self.climbing_textures.append(texture)
+
# Set the initial texture
self.texture = self.idle_texture_pair[0]
@@ -116,6 +125,10 @@
# How far have we traveled horizontally since changing the texture
self.x_odometer = 0
+ self.y_odometer = 0
+
+ self.ladder_list = ladder_list
+ self.is_on_ladder = False
def pymunk_moved(self, physics_engine, dx, dy, d_angle):
""" Handle being moved by the pymunk engine """
@@ -128,8 +141,38 @@
# Are we on the ground?
is_on_ground = physics_engine.is_on_ground(self)
+ # Are we on a ladder?
+ if len(arcade.check_for_collision_with_list(self, self.ladder_list)) > 0:
+ if not self.is_on_ladder:
+ self.is_on_ladder = True
+ self.pymunk.gravity = (0, 0)
+ self.pymunk.damping = 0.0001
+ self.pymunk.max_vertical_velocity = PLAYER_MAX_HORIZONTAL_SPEED
+ else:
+ if self.is_on_ladder:
+ self.pymunk.damping = 1.0
+ self.pymunk.max_vertical_velocity = PLAYER_MAX_VERTICAL_SPEED
+ self.is_on_ladder = False
+ self.pymunk.gravity = None
+
# Add to the odometer how far we've moved
self.x_odometer += dx
+ self.y_odometer += dy
+
+ if self.is_on_ladder and not is_on_ground:
+ # Have we moved far enough to change the texture?
+ if abs(self.y_odometer) > DISTANCE_TO_CHANGE_TEXTURE:
+
+ # Reset the odometer
+ self.y_odometer = 0
+
+ # Advance the walking animation
+ self.cur_texture += 1
+
+ if self.cur_texture > 1:
+ self.cur_texture = 0
+ self.texture = self.climbing_textures[self.cur_texture]
+ return
# Jumping animation
if not is_on_ground:
@@ -157,7 +200,6 @@
self.cur_texture = 0
self.texture = self.walk_textures[self.cur_texture][self.character_face_direction]
-
class BulletSprite(arcade.SpriteSolidColor):
""" Bullet Sprite """
def pymunk_moved(self, physics_engine, dx, dy, d_angle):
@@ -166,7 +208,6 @@
if self.center_y < -100:
self.remove_from_sprite_lists()
-
class GameWindow(arcade.Window):
""" Main Window """
@@ -185,13 +226,16 @@
self.bullet_list: Optional[arcade.SpriteList] = None
self.item_list: Optional[arcade.SpriteList] = None
self.moving_sprites_list: Optional[arcade.SpriteList] = None
+ self.ladder_list: Optional[arcade.SpriteList] = None
# Track the current state of what key is pressed
self.left_pressed: bool = False
self.right_pressed: bool = False
+ self.up_pressed: bool = False
+ self.down_pressed: bool = False
# Physics engine
- self.physics_engine = Optional[arcade.PymunkPhysicsEngine]
+ self.physics_engine: Optional[arcade.PymunkPhysicsEngine] = None
# Set background color
self.background_color = arcade.color.AMAZON
@@ -212,9 +256,11 @@
# Pull the sprite layers out of the tile map
self.wall_list = tile_map.sprite_lists["Platforms"]
self.item_list = tile_map.sprite_lists["Dynamic Items"]
+ self.ladder_list = tile_map.sprite_lists["Ladders"]
+ self.moving_sprites_list = tile_map.sprite_lists['Moving Platforms']
# Create player sprite
- self.player_sprite = PlayerSprite()
+ self.player_sprite = PlayerSprite(self.ladder_list, hit_box_algorithm=arcade.hitbox.algo_detailed)
# Set player location
grid_x = 1
@@ -224,9 +270,6 @@
# Add to player sprite list
self.player_list.append(self.player_sprite)
- # Moving Sprite
- self.moving_sprites_list = tile_map.sprite_lists['Moving Platforms']
-
# --- Pymunk Physics Engine Setup ---
# The default damping for every object controls the percent of velocity
@@ -261,7 +304,7 @@
# For the player, we set the damping to a lower value, which increases
# the damping rate. This prevents the character from traveling too far
# after the player lets off the movement keys.
- # Setting the moment of inertia to PymunkPhysicsEngine.MOMENT_INF prevents it from
+ # Setting the moment of intertia to PymunkPhysicsEngine.MOMENT_INF prevents it from
# rotating.
# Friction normally goes between 0 (no friction) and 1.0 (high friction)
# Friction is between two objects in contact. It is important to remember
@@ -299,24 +342,32 @@
def on_key_press(self, key, modifiers):
"""Called whenever a key is pressed. """
- if key == arcade.key.LEFT:
+ if key in (arcade.key.LEFT, arcade.key.A):
self.left_pressed = True
- elif key == arcade.key.RIGHT:
+ elif key in (arcade.key.RIGHT, arcade.key.D):
self.right_pressed = True
- elif key == arcade.key.UP:
- # find out if player is standing on ground
- if self.physics_engine.is_on_ground(self.player_sprite):
+ elif key in (arcade.key.UP, arcade.key.W):
+ self.up_pressed = True
+ # find out if player is standing on ground, and not on a ladder
+ if self.physics_engine.is_on_ground(self.player_sprite) \
+ and not self.player_sprite.is_on_ladder:
# She is! Go ahead and jump
impulse = (0, PLAYER_JUMP_IMPULSE)
self.physics_engine.apply_impulse(self.player_sprite, impulse)
+ elif key in (arcade.key.DOWN, arcade.key.S):
+ self.down_pressed = True
def on_key_release(self, key, modifiers):
"""Called when the user releases a key. """
- if key == arcade.key.LEFT:
+ if key in (arcade.key.LEFT, arcade.key.A):
self.left_pressed = False
- elif key == arcade.key.RIGHT:
+ elif key in (arcade.key.RIGHT, arcade.key.D):
self.right_pressed = False
+ elif key in (arcade.key.UP, arcade.key.W):
+ self.up_pressed = False
+ elif key in (arcade.key.DOWN, arcade.key.S):
+ self.down_pressed = False
def on_mouse_press(self, x, y, button, modifiers):
""" Called whenever the mouse button is clicked. """
@@ -379,7 +430,7 @@
# Update player forces based on keys pressed
if self.left_pressed and not self.right_pressed:
# Create a force to the left. Apply it.
- if is_on_ground:
+ if is_on_ground or self.player_sprite.is_on_ladder:
force = (-PLAYER_MOVE_FORCE_ON_GROUND, 0)
else:
force = (-PLAYER_MOVE_FORCE_IN_AIR, 0)
@@ -388,13 +439,28 @@
self.physics_engine.set_friction(self.player_sprite, 0)
elif self.right_pressed and not self.left_pressed:
# Create a force to the right. Apply it.
- if is_on_ground:
+ if is_on_ground or self.player_sprite.is_on_ladder:
force = (PLAYER_MOVE_FORCE_ON_GROUND, 0)
else:
force = (PLAYER_MOVE_FORCE_IN_AIR, 0)
self.physics_engine.apply_force(self.player_sprite, force)
# Set friction to zero for the player while moving
self.physics_engine.set_friction(self.player_sprite, 0)
+ elif self.up_pressed and not self.down_pressed:
+ # Create a force to the right. Apply it.
+ if self.player_sprite.is_on_ladder:
+ force = (0, PLAYER_MOVE_FORCE_ON_GROUND)
+ self.physics_engine.apply_force(self.player_sprite, force)
+ # Set friction to zero for the player while moving
+ self.physics_engine.set_friction(self.player_sprite, 0)
+ elif self.down_pressed and not self.up_pressed:
+ # Create a force to the right. Apply it.
+ if self.player_sprite.is_on_ladder:
+ force = (0, -PLAYER_MOVE_FORCE_ON_GROUND)
+ self.physics_engine.apply_force(self.player_sprite, force)
+ # Set friction to zero for the player while moving
+ self.physics_engine.set_friction(self.player_sprite, 0)
+
else:
# Player's feet are not moving. Therefore up the friction so we stop.
self.physics_engine.set_friction(self.player_sprite, 1.0)
@@ -432,10 +498,16 @@
""" Draw everything """
self.clear()
self.wall_list.draw()
+ self.ladder_list.draw()
self.moving_sprites_list.draw()
self.bullet_list.draw()
self.item_list.draw()
self.player_list.draw()
+
+ # for item in self.player_list:
+ # item.draw_hit_box(arcade.color.RED)
+ # for item in self.item_list:
+ # item.draw_hit_box(arcade.color.RED)
def main():
""" Main function """