71_PythonGameDevelopment.py

import pygame
import time
import random

pygame.init()

display_width = 800
display_height = 600

gameDisplay = pygame.display.set_mode((display_width,display_height))


pygame.display.set_caption('Tanks')

#icon = pygame.image.load("apple.png")       
#pygame.display.set_icon(icon)

white = (255,255,255)
black = (0,0,0)


red = (200,0,0)
light_red = (255,0,0)

yellow = (200,200,0)
light_yellow = (255,255,0)

green = (34,177,76)
light_green = (0,255,0)

clock = pygame.time.Clock()




tankWidth = 40
tankHeight = 20

turretWidth = 5
wheelWidth = 5





smallfont = pygame.font.SysFont("comicsansms", 25)
medfont = pygame.font.SysFont("comicsansms", 50)
largefont = pygame.font.SysFont("comicsansms", 85)

#img = pygame.image.load('snakehead.png')
#appleimg = pygame.image.load('apple.png')

def score(score):

    text = smallfont.render("Score: "+str(score), True, black)
    gameDisplay.blit(text, [0,0])
    

def text_objects(text, color,size = "small"):

    if size == "small":
        textSurface = smallfont.render(text, True, color)
    if size == "medium":
        textSurface = medfont.render(text, True, color)
    if size == "large":
        textSurface = largefont.render(text, True, color)

    return textSurface, textSurface.get_rect()

def text_to_button(msg, color, buttonx, buttony, buttonwidth, buttonheight, size = "small"):
    textSurf, textRect = text_objects(msg,color,size)
    textRect.center = ((buttonx+(buttonwidth/2)), buttony+(buttonheight/2))
    gameDisplay.blit(textSurf, textRect)
   
def message_to_screen(msg,color, y_displace = 0, size = "small"):
    textSurf, textRect = text_objects(msg,color,size)
    textRect.center = (int(display_width / 2), int(display_height / 2)+y_displace)
    gameDisplay.blit(textSurf, textRect)

def tank(x,y,turPos):
    x = int(x)
    y = int(y)


    possibleTurrets = [(x-27, y-2),
                       (x-26, y-5),
                       (x-25, y-8),
                       (x-23, y-12),
                       (x-20, y-14),
                       (x-18, y-15),
                       (x-15, y-17),
                       (x-13, y-19),
                       (x-11, y-21)
                       ]



    
    pygame.draw.circle(gameDisplay, black, (x,y), int(tankHeight/2))
    pygame.draw.rect(gameDisplay, black, (x-tankHeight, y, tankWidth, tankHeight))

    pygame.draw.line(gameDisplay, black, (x,y), possibleTurrets[turPos], turretWidth)

    pygame.draw.circle(gameDisplay, black, (x-15, y+20), wheelWidth)
    pygame.draw.circle(gameDisplay, black, (x-10, y+20), wheelWidth)
       

    pygame.draw.circle(gameDisplay, black, (x-15, y+20), wheelWidth)
    pygame.draw.circle(gameDisplay, black, (x-10, y+20), wheelWidth)
    pygame.draw.circle(gameDisplay, black, (x-5, y+20), wheelWidth)
    pygame.draw.circle(gameDisplay, black, (x, y+20), wheelWidth)
    pygame.draw.circle(gameDisplay, black, (x+5, y+20), wheelWidth)
    pygame.draw.circle(gameDisplay, black, (x+10, y+20), wheelWidth)
    pygame.draw.circle(gameDisplay, black, (x+15, y+20), wheelWidth)

    return possibleTurrets[turPos]


def game_controls():


    gcont = True

    while gcont:
        for event in pygame.event.get():
                #print(event)
                if event.type == pygame.QUIT:
                    pygame.quit()
                    quit()


        gameDisplay.fill(white)
        message_to_screen("Controls",green,-100,size="large")
        message_to_screen("Fire: Spacebar",black,-30)
        message_to_screen("Move Turret: Up and Down arrows",black,10)
        message_to_screen("Move Tank: Left and Right arrows",black,50)
        message_to_screen("Pause: P",black,90)


        button("play", 150,500,100,50, green, light_green, action="play")
        button("Main", 350,500,100,50, yellow, light_yellow, action="main")
        button("quit", 550,500,100,50, red, light_red, action ="quit")



        pygame.display.update()

        clock.tick(15)


def button(text, x, y, width, height, inactive_color, active_color, action = None):
    cur = pygame.mouse.get_pos()
    click = pygame.mouse.get_pressed()
    #print(click)
    if x + width > cur[0] > x and y + height > cur[1] > y:
        pygame.draw.rect(gameDisplay, active_color, (x,y,width,height))
        if click[0] == 1 and action != None:
            if action == "quit":
                pygame.quit()
                quit()

            if action == "controls":
                game_controls()

            if action == "play":
                gameLoop()

            if action == "main":
                game_intro()
            
    else:
        pygame.draw.rect(gameDisplay, inactive_color, (x,y,width,height))

    text_to_button(text,black,x,y,width,height)
        


def pause():

    paused = True
    message_to_screen("Paused",black,-100,size="large")
    message_to_screen("Press C to continue playing or Q to quit",black,25)
    pygame.display.update()
    while paused:
        for event in pygame.event.get():
                
                if event.type == pygame.QUIT:
                    pygame.quit()
                    quit()
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_c:
                        paused = False
                    elif event.key == pygame.K_q:
                        pygame.quit()
                        quit()

        

        clock.tick(5)



def barrier(xlocation,randomHeight, barrier_width):
    
    pygame.draw.rect(gameDisplay, black, [xlocation, display_height-randomHeight, barrier_width,randomHeight])
    
def explosion(x, y):

    explode = True

    while explode:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                quit()

        startPoint = x,y

        colorChoices = [red, light_red, yellow, light_yellow]

        magnitude = 1

        while magnitude < 50:

            exploding_bit_x = x +random.randrange(-1*magnitude,magnitude)
            exploding_bit_y = y +random.randrange(-1*magnitude,magnitude)

            pygame.draw.circle(gameDisplay, colorChoices[random.randrange(0,4)], (exploding_bit_x,exploding_bit_y),random.randrange(1,5))
            magnitude += 1

            pygame.display.update()
            clock.tick(100)

        explode = False
        
        


def fireShell(xy,tankx,tanky,turPos,gun_power):
    fire = True

    startingShell = list(xy)

    print("FIRE!",xy)

    while fire:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                quit()

        print(startingShell[0],startingShell[1])
        pygame.draw.circle(gameDisplay, red, (startingShell[0],startingShell[1]),5)

        startingShell[0] -= (12 - turPos)*2

        # y = x**2
        startingShell[1] += int((((startingShell[0]-xy[0])*0.015/(gun_power/50))**2) - (turPos+turPos/(12-turPos)))

        if startingShell[1] > display_height:
            print("Last shell:",startingShell[0], startingShell[1])

            hit_x = int((startingShell[0]*display_height)/startingShell[1])
            hit_y = int(display_height)


            print("Impact:", hit_x,hit_y)

            explosion(hit_x,hit_y)


            
            fire = False
            

        pygame.display.update()
        clock.tick(60)


def power(level):
    text = smallfont.render("Power: "+str(level)+"%",True, black)
    gameDisplay.blit(text, [display_width/2,0])



def game_intro():

    intro = True

    while intro:
        for event in pygame.event.get():
                #print(event)
                if event.type == pygame.QUIT:
                    pygame.quit()
                    quit()

                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_c:
                        intro = False
                    elif event.key == pygame.K_q:
                        
                        pygame.quit()
                        quit()

        gameDisplay.fill(white)
        message_to_screen("Welcome to Tanks!",green,-100,size="large")
        message_to_screen("The objective is to shoot and destroy",black,-30)
        message_to_screen("the enemy tank before they destroy you.",black,10)
        message_to_screen("The more enemies you destroy, the harder they get.",black,50)
        #message_to_screen("Press C to play, P to pause or Q to quit",black,180)


        button("play", 150,500,100,50, green, light_green, action="play")
        button("controls", 350,500,100,50, yellow, light_yellow, action="controls")
        button("quit", 550,500,100,50, red, light_red, action ="quit")



        pygame.display.update()

        clock.tick(15)



def gameLoop():
    gameExit = False
    gameOver = False
    FPS = 15

    barrier_width = 50

    mainTankX = display_width * 0.9
    mainTankY = display_height * 0.9
    tankMove = 0

    currentTurPos = 0
    changeTur = 0

    fire_power = 50
    power_change = 0

    xlocation = (display_width/2) + random.randint(-0.2*display_width, 0.2*display_width) 
    randomHeight = random.randrange(display_height*0.1,display_height*0.6)

    
    while not gameExit:
        gameDisplay.fill(white)
        gun = tank(mainTankX,mainTankY,currentTurPos)
        
        if gameOver == True:
            #gameDisplay.fill(white)
            message_to_screen("Game Over",red,-50,size="large")
            message_to_screen("Press C to play again or Q to exit",black,50)
            pygame.display.update()
            while gameOver == True:
                for event in pygame.event.get():
                    if event.type == pygame.QUIT:
                        gameExit = True
                        gameOver = False

                    if event.type == pygame.KEYDOWN:
                        if event.key == pygame.K_c:
                            gameLoop()
                        elif event.key == pygame.K_q:
                            
                            gameExit = True
                            gameOver = False
         


        for event in pygame.event.get():

            if event.type == pygame.QUIT:
                gameExit = True

            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    tankMove = -5
                    
                elif event.key == pygame.K_RIGHT:
                    tankMove = 5
                    
                elif event.key == pygame.K_UP:
                    changeTur = 1
                    
                elif event.key == pygame.K_DOWN:
                    changeTur = -1

                elif event.key == pygame.K_p:
                    pause()

                elif event.key == pygame.K_SPACE:
                    fireShell(gun,mainTankX,mainTankY,currentTurPos,fire_power)
                    
                elif event.key == pygame.K_a:
                    power_change = -1
                elif event.key == pygame.K_d:
                    power_change = 1

            elif event.type == pygame.KEYUP:
                if event.key == pygame.K_LEFT or event.key == pygame.K_RIGHT:
                    tankMove = 0

                if event.key == pygame.K_UP or event.key == pygame.K_DOWN:
                    changeTur = 0
                    
                if event.key == pygame.K_a or event.key == pygame.K_d:
                    power_change = 0
                


                    
        
        mainTankX += tankMove

        currentTurPos += changeTur

        if currentTurPos > 8:
            currentTurPos = 8
        elif currentTurPos < 0:
            currentTurPos = 0


        if mainTankX - (tankWidth/2) < xlocation+barrier_width:
            mainTankX += 5
            

        
        fire_power += power_change

        power(fire_power)

        barrier(xlocation,randomHeight,barrier_width)
        pygame.display.update()
        clock.tick(FPS)

    pygame.quit()
    quit()

game_intro()
gameLoop()