Covid Fighter Part-3

from ursina import *
import random

app = Ursina()
shoot = False
v = 0
score = 0
hit = False
over = False


def update():
    global doctor, shoot, vaccine_list, virus_list, score, hit, over, v

    if not(over):

        if held_keys['right arrow']:
            doctor.x += 0.007
        if held_keys['left arrow']:
            doctor.x -= 0.007

        if shoot:
            vaccine_list[v].y += 0.015

            if vaccine_list[v].y > 0.3 or hit:
                destroy(vaccine_list[v])
                shoot = False
                hit = False

            hit_info = vaccine_list[v].intersects()
            if hit_info.hit:
                hit = True
                score += 1

                if hit_info.entity in virus_list:
                    j = virus_list.index(hit_info.entity)
                    destroy(virus_list[j])
                    virus_list[j] = duplicate(virus, x=random.randint(-45,45)/100, y=random.randint(-3,-1)/100)

        for i in virus_list:
            i.y -= 0.001
            if i.y< -0.8:
                over = True

        print_on_screen("SCORE: "+str(score), position=(-0.8,0.5))

    elif over == True:
        for i in vaccine_list:
            destroy(i)

        for i in virus_list:
            destroy(i)

        destroy(doctor)

        print_on_screen("GAME OVER!", position=(-0.05,0.2))
        print_on_screen("FINAL SCORE: "+str(score), position=(-0.07,0.15))



def input(key):
    global shoot, vaccine_list, v
    st = -0.8
    if key == "space":
        shoot = True
        v += 1
        vaccine_list.append(duplicate(vaccine, x=doctor.x, y=st))


Entity(model="quad", scale=70, texture="back.jpg")

back_size = 22
back = Entity(model='quad', color=color.rgba(255,255,255,0), scale=(12,18),
              position=(back_size//2, back_size//2, -0.01))


doctor = Entity(model="cube", parent=back, texture='doctor.png', scale=0.2,
                position=(0,-0.75,0))


vaccine = Entity(model="quad", parent=back, texture='vaccine.png', scale=0.1,
                 position=(2,2), collider="box")
vaccine_list = [duplicate(vaccine, y=2,x=2)]


virus = Entity(model="quad", parent=back, texture='virus.png', scale=0.15,
               position=(2,2), collider="box")
virus_list = []

for i in range(5):
    virus_list.append(duplicate(virus, x=random.randint(-45,45)/100, y=random.randint(-3,-1)/100))

camera.position = (back_size//2, -15, -11)
camera.rotation_x = -60
app.run()