New tutorials in the Aspen Game series form Codemy. Player now jumps up
at speed 15 (-1*), when the spacebar is pressed.
import pygame
import self as self
#Define a 2d vector
vector = pygame.math.Vector2
#Initialize the game
pygame.init()
# Set display surface (divisible by 32 tile size)
WINDOW_WIDTH = 960 # 30 columns
WINDOW_HEIGHT = 640 # 20 rows
display_surface = pygame.display.set_mode((WINDOW_WIDTH,WINDOW_HEIGHT))
pygame.display.set_caption("Aspen Platformer - Codemy.com")
# Set FPS and clock
FPS = 60
clock = pygame.time.Clock()
# Tile Class
class Tile(pygame.sprite.Sprite):
# Read and Create tiles and put em on the screen
def __init__(self, x, y, image_integer, main_group, sub_group=""):
super().__init__()
# Load image and add to the tile subgroups
if image_integer == 1:
self.image = pygame.image.load('images/Brown.png')
elif image_integer == 2:
self.image = pygame.image.load('images/Green.png')
sub_group.add(self)
elif image_integer == 3:
self.image = pygame.image.load('images/Blue.png')
sub_group.add(self)
# add every tile to main tile group
main_group.add(self)
# Get rect of images and position within the grid
self.rect = self.image.get_rect()
self.rect.topleft = (x,y)
# Apsen Player Class
class Aspen(pygame.sprite.Sprite):
def __init__(self, x, y, grass_tiles, water_tiles):
super().__init__()
# Define our aspen image
self.image = pygame.image.load("images/P.png")
# Get rect
self.rect = self.image.get_rect()
# Position aspen
self.rect.bottomleft = (x,y)
#Define our grass and water
self.grass_tiles = grass_tiles
self.water_tiles = water_tiles
# Kinematic Vectors (x,y)
self.position = vector(x,y)
self.velocity = vector(0,0)
self.acceleration = vector(0,0)
# Kinematic Constants
self.HORIZONTAL_ACCELERATION = 2
self.HORIZONTAL_FRICTION = 0.20
self.VERTICAL_ACCELERATION = 0.5 #Gravity
self.VERTICAL_JUMP_SPEED = 15
def jump(self):
# Only when player is on grass
if pygame.sprite.spritecollide(self, self.grass_tiles, False):
self.velocity.y = -1 * self.VERTICAL_JUMP_SPEED # jumping upwards thus negative
def update(self):
# set initial acceleration to 0,0 to start
self.acceleration = vector(0, self.VERTICAL_ACCELERATION)
keys = pygame.key.get_pressed()
if keys[pygame.K_LEFT]:
self.acceleration.x = -1 * self.HORIZONTAL_ACCELERATION
if keys[pygame.K_RIGHT]:
self.acceleration.x = self.HORIZONTAL_ACCELERATION
# Calculate new Kinematics
self.acceleration.x -= self.velocity.x * self.HORIZONTAL_FRICTION
self.velocity += self.acceleration
self.position += self.velocity + 0.5 * self.acceleration
# update rect
self.rect.bottomleft = self.position
# Check for collisions with Grass
touched_platforms = pygame.sprite.spritecollide(self, self.grass_tiles, False) # Return a python list of tiles we touched
if touched_platforms:
self.position.y = touched_platforms[0].rect.top + 1
self.velocity.y = 0
# Check for collisions with Water
if pygame.sprite.spritecollide(self, self.water_tiles, False):
print("You Died!")
# Define our sprite groups
main_tile_group = pygame.sprite.Group()
grass_tile_group = pygame.sprite.Group()
water_tile_group = pygame.sprite.Group()
aspen_group = pygame.sprite.Group()
# Create a tile map, nested python list: 0=no tile, 1=dirt, 2=grass, 3=water, 4=aspen
tile_map = [
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[2,2,2,2,2,2,2,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,2,2,2],
[1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,2,2,2,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,2,2,2,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[2,2,2,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,2],
[1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,0,0,0,0,0,0,2,2,2,2,2],
[1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,3,3,3,3,3,3,1,1,1,1,1],
[1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,3,3,3,3,3,3,1,1,1,1,1]
]
# Create Tile objects from the tile map
# 2 for loops because tile map is nested. 20 i down
for i in range(len(tile_map)):
# loop through the 30 elements in each list, j across
for j in range(len(tile_map[i])):
# Check for 0,1,2,3
if tile_map[i][j] == 1:
# dirt
Tile(j*32, i*32, 1, main_tile_group)
elif tile_map[i][j] == 2:
# grass
Tile(j*32, i*32, 2, main_tile_group, grass_tile_group)
elif tile_map[i][j] == 3:
# water
Tile(j*32, i*32, 3, main_tile_group, water_tile_group)
elif tile_map[i][j] == 4:
aspen = Aspen(j*32, i*32 + 32, grass_tile_group, water_tile_group)
aspen_group.add(aspen)
# Add a background
bg_image = pygame.image.load('images/bg.png')
bg_image_rect = bg_image.get_rect()
bg_image_rect.topleft = (0,0)
# Game Loop
running = True
while running:
# Check to quit
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
# Jump
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_SPACE:
aspen.jump()
# fill the display or blit an image
# display_surface.fill("black")
display_surface.blit(bg_image, bg_image_rect)
# Draw the Tiles
main_tile_group.draw(display_surface)
# Update and draw sprites
aspen_group.update()
aspen_group.draw(display_surface)
# Update Display
pygame.display.update()
clock.tick(FPS)
# End the game
pygame.quit()
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