Space Invaders.py

#---------------------------------------------------------------
# SPACE INVADERS
# Andru Onciul
# 10/03/2018
# Use the arrows to move and
# Press Space to fire
#---------------------------------------------------------------
import turtle as turtle
import math
import random
import winsound
import time


#Variables
playerspeed = 15
invaderspeed = 7
invaderdownspeed = 40
bulletspeed = 25
maxscore= 700
maxlives= 3
score= 0

#Ask to begin or not
wanttoplay=True
hasntlost=True
ingame=False

#Set up the screen
wn = turtle.Screen()
wn.bgcolor("blue")
wn.title("Space Invaders")
wn.bgpic("background1.gif")
#wn.tracer(3)

#Register shapes for turtles
turtle.register_shape("invader (1).gif")
turtle.register_shape("player.gif")
turtle.register_shape("heart_noback.gif")
turtle.register_shape("minivaisseau.gif")
turtle.register_shape("insecte1.gif")

#Draw border
mypen= turtle.Turtle()
mypen.penup()
mypen.color("white")
mypen.speed(0)
mypen.setposition(-300,-300)
mypen.pendown()
mypen.pensize(3)
for side in range(4):
    mypen.forward(600)
    mypen.left(90)

mypen.hideturtle()

#Draw title
score_pen = turtle.Turtle()
score_pen.speed(0)
score_pen.color("white")
score_pen.penup()
score_pen.setposition(0,310)
scorestr="SPACE INVADERS"
score_pen.write(scorestr,False,align="center",font=("Arial black",14,"bold"))
score_pen.hideturtle()

#Functions
import msvcrt as m
def wait():
    m.getch()
    
def move_left():
    if ingame==True:
        x = player.xcor()
        x-= playerspeed
        if x < -280:
            x=280
        player.setx(x)
    
def move_right():
    if ingame==True:
        x = player.xcor()
        x+= playerspeed
        if x > 280:
            x=280
        player.setx(x)
    
def closewn():
    global wn
    wn.bye()
    
def fire():
    global bulletstate
    if bulletstate== "ready" and ingame==True:
        laser()
        bulletstate= "fire"
        x= player.xcor()
        y= player.ycor() + 10
        bullet.setposition(x,y)
        bullet.showturtle()

def inCollision(a,b):
    d= math.sqrt( math.pow(a.xcor()-b.xcor(),2) + math.pow(a.ycor()-b.ycor(),2))
    if d< 15:
        return True
    return False
    
def laser():
    winsound.PlaySound("laser.wav", winsound.SND_ASYNC)
    
def explosion():
    winsound.PlaySound("explosion.wav", winsound.SND_ASYNC)

def play():
    global wanttoplay
    global hasntlost
    wanttoplay=True
    hasntlost=True
    
def replay():
    global wanttoplay
    global hasntlost
    wanttoplay=True
    hasntlost=True
    
#Set keyboard bindings
turtle.listen()
turtle.onkey(move_left,"Left")
turtle.onkey(move_right,"Right")
turtle.onkey(fire,"space")
turtle.onkey(closewn,"Escape")
turtle.onkey(replay,"r")
turtle.onkey(play,"p")

#Create score pen
score_pen = turtle.Turtle()
score_pen.speed(0)
score_pen.color("white")
score_pen.penup()

#Create player
player = turtle.Turtle()
player.color("blue")
player.shape("minivaisseau.gif")
player.penup()
player.speed(0) #vitesse d'animation (0 c le max)
player.setposition(0,-250)
player.setheading(90)
player.hideturtle()

#Create player bullets
bullet=turtle.Turtle()
bullet.color("yellow")
bullet.shape("triangle")
bullet.penup()
bullet.speed(0)
bullet.setheading(90)
bullet.shapesize(0.5,0.5)
bullet.setposition(0,310) #hors de la carte pour pas quelle detruise un vaisseau sans que je tire
bullet.hideturtle()
#Define bullet state
#ready - ready to fire
#fire - th bullet is firing
bulletstate = "ready"

#Create multiple ennemies
maxinvaders= 6
invaders=[]
for count in range(maxinvaders):       
    invaders.append(turtle.Turtle())
    invaders[count].hideturtle()
for invader in invaders:
    invader.color("red")
    invader.shape("insecte1.gif")
    invader.penup()
    invader.speed(0)
    x= random.randint(-200,200)
    y= random.randint(100,250)
    invader.setposition(x,y)
    
#Create live turtle
hearts=[]
for i in range(maxlives):
    heart=turtle.Turtle()
    heart.hideturtle()
    heart.speed(3)
    heart.shape("heart_noback.gif")
    heart.penup()
    heart.setposition(200 + i*35,270)
    hearts.append(heart)


#----------------------------------------------------------------------------------------------------
#Now the main loop that will play the game
#----------------------------------------------------------------------------------------------------



#MAIN LOOP
while True:
    #Write Begining text
    score_pen.clear()
    score_pen.setposition(0,0)
    score_pen.write("ARE YOU READY ?",False,align="center",font=("Arial black",20,"bold"))
    score_pen.setposition(0,-30)
    score_pen.write("Press P to launch the game",False,align="center",font=("Arial",15,"normal"))
    score_pen.setposition(0,-50)
    score_pen.write("Use the arrows to move and fire with Space",False,align="center",font=("Arial",15,"normal"))
    score_pen.hideturtle()

    #Wait for player to press P
    wanttoplay=False
    while True:
        t=turtle.Turtle()
        y= t.ycor()+1     #il se passe qlqch en fond/background pour que ce soit pas un bouble instantannée et qu'il ait le temps de capter
        t.sety(y)         #qd utilisateur clique sur p
        if wanttoplay == True:
            break
        
    #Make all turtles visibles for begining of the match
    player.showturtle()
    for invader in invaders:
        invader.showturtle()
        x= random.randint(-200,200)
        y= random.randint(100,250)
        invader.setposition(x,y)
        
    #Draw score
    score_pen.clear()
    score_pen.setposition(-290,270)
    scorestr="Score: %s" %score
    score_pen.write(scorestr,False,align="left",font=("Arial",14,"normal"))
    score_pen.hideturtle()

    #Drawn number of lifes
    for heart in hearts:
        heart.showturtle()

    #The Game can now begin
    ingame = True
    print("begin game")
    score=0
    lives=maxlives
    
    while score < maxscore and hasntlost==True:
        for invader in invaders:
            #move invaders
            x= invader.xcor()
            x+= invaderspeed
            invader.setx(x)
            
            #move invaders down
            if invader.xcor() > 280:
                #Move all ennemies down
                for i in invaders:
                    
                    y= i.ycor()
                    y-= invaderdownspeed
                    i.sety(y)
                #Change all ennemies direction
                invaderspeed *= -1
                
            if invader.xcor() < -280:
                for i in invaders:    
                    y= i.ycor()
                    y-= invaderdownspeed
                    i.sety(y)
                invaderspeed *= -1
                
            #Check collision bullet/invader
            if inCollision(bullet,invader):
                explosion()
                bullet.hideturtle()
                bulletstate= "ready"
                bullet.setposition(0,-400)
                #reset. ennemis
                x= random.randint(-200,200)
                y= random.randint(100,250)
                invader.setposition(x,y)
                #Change score
                score+=100
                score_pen.setposition(-290,270)
                scorestr="Score: %s" %score
                score_pen.clear()
                score_pen.write(scorestr,False,align="left",font=("Arial",14,"normal"))
                score_pen.hideturtle()
            #Lose a life
            if inCollision(player,invader):
                explosion()
                lives -=1
                #Reset ennemi
                x= random.randint(-200,200)
                y= random.randint(100,250)
                invader.setposition(x,y)
                #Write remaining lives
                hearts[lives].hideturtle()
                if lives == 0:
                    hasntlost=False
                    break
            #Respawn ennemies if they go too low
            if invader.ycor() < -290:
                lives -=1
                hearts[lives].hideturtle()
                x= random.randint(-200,200)
                y= random.randint(100,250)
                invader.setposition(x,y)
                if lives == 0:
                    hasntlost=False
                    break
            
        #Move the bullet
        if bulletstate == "fire":
            y= bullet.ycor()
            y+= bulletspeed
            bullet.sety(y)
        #Check bullet in borders
        if bullet.ycor() > 280:
            bullet.hideturtle()
            bulletstate="ready"
    
    ingame=False
    
    #Hide the turtles
    player.hideturtle()
    for invader in invaders:
        invader.hideturtle()
    bullet.hideturtle()
    
    #Draw the appropriate finale message
    if score == maxscore:
        score_pen.setposition(0,0)
        score_pen.write("YOU WON",False,align="center",font=("Arial black",20,"bold"))
        score_pen.setposition(0,-30)
        score_pen.write("Press Escape to exit the game or Press R to retry",False,align="center",font=("Arial",14,"normal"))
        score_pen.hideturtle()
    elif lives == 0:
        score_pen.setposition(0,0)
        score_pen.write("GAME OVER",False,align="center",font=("Arial black",20,"bold"))
        score_pen.setposition(0,-30)
        score_pen.write("Press Escape to exit the game or Press R to retry",False,align="center",font=("Arial",14,"normal"))
        score_pen.hideturtle()
        
    #Wait for player answer
    wanttoplay= False
    while True:
        bullet.sety(310)
        y= bullet.ycor()+1     #il se passe qlqch en fond pour que ce soit pas un bouble instantannée et qu'il ait le temps de capter
        bullet.sety(y)         #qd utilisateur clique sur p
        if wanttoplay == True:
            break
    
        
wn.mainloop()