import pgzrun
import random

#start
pgzrun.init()

#background
WIDTH , HEIGHT = 600,200
screen = pgzrun.display.set_mode((WIDTH,HEIGHT))
pgzrun.display.set_caption("dinosaur running")

#colour
WHITE = (255,255,255)
BLACK = (0,0,0)

clock = pgzrun.time.Clock()
FPS = 60
gravity = 0.8
jump_vel = -16
is_jump = False

#dinosaur
dino_x = 50
dino_y = 140
dino_y_vel = 0
is_jump = False

#bairies
cactus_list = []
cactus_speed = 6
spawn_timer = 0

#game condition
game_over = False
score = 0
font = pgzrun.font.SysFont(None,30)

#main loop
running = True
while running:
    clock.tick(FPS)
    screen.fill(WHITE)

    for event in pgzrun.event.get():
        if event.type == pgzrun.QUIT:
            running = False
        if  event.type == pgzrun.KEYKNOWN:
            if event.key == pgzrun.K_SPACE and not is_jump and not game_over:
                dino_y_vel = jump_vel
                is_jump = True
            #restart the game
            if event.key == pgzrun.K_SPACE and game_over:
                game_over = False
                score = 0
                cactus_list.clear()
                dino_y = 140
                dino_y_vel = 0
    
    if not game_over:
        dino_y_vel += gravity
        dino_y += dino_y_vel

        if dino_y >= 140:
            dino_y = 140
            dino_y_vel = 0
            is_jump = False

        #produce bairy
        spawn_timer += 1
        if spawn_timer > 80:
            cactus_x = WIDTH