FCFS.py

import pygame, sys
import SJF
def get_font(size) :  # Returns Press-Start-2P in the desired size
    return pygame.font.SysFont('Comic Sans MS', size, pygame.font.Font.bold)
def FCFS():
    pygame.init()
    global cirl, circle
    val1 = 20
    val2=30
    val3=10
    SCREEN = pygame.display.set_mode((1280, 620))
    pygame.display.set_caption("Menu")
    sc2 = flag = flag2 = False
    sc1 =True
    x = z = a= 300
    y = 320
    c = b= 370
    cir_rect = pygame.rect.Rect(500, 233, x, y)
    cir_rect2 = pygame.rect.Rect(500, 233, x, y)
    cir_rect3 = pygame.rect.Rect(500, 233, x, y)
    rex = pygame.rect.Rect(700, 300, 120, 50)
    dex = pygame.rect.Rect(822, 300, 120, 50)
    gex = pygame.rect.Rect(944, 300, 120, 50)
    pix = pygame.rect.Rect(1046, 300, 80, 50)
    collist = [rex, dex, gex, pix]

    while True :
        if sc1 :
            SCREEN.fill("black")
            pygame.draw.rect(SCREEN, "Blue", rex)
            pygame.draw.rect(SCREEN, "Blue", dex)
            pygame.draw.rect(SCREEN, "Blue", gex)
            SCREEN.lock()
            cir = pygame.draw.circle(SCREEN, (212, 255, 0), cir_rect.size, 20, 0)
            if flag :
                cirl = pygame.draw.circle(SCREEN, (212, 255, 0), cir_rect2.size, 20, 0)
                z = z + 1
                if 800 > z > 795 :
                    c = c - 10
            if flag2 :
                circle = pygame.draw.circle(SCREEN, (212, 255, 0), cir_rect3.size, 20, 0)
                a = a + 1
                if 920 > a > 915 :
                    b = b - 10
            SCREEN.unlock()
            PLAY_TEXT1 = get_font(30).render("THREE processor A->5 B->2 C->1.", True, "Blue")
            PLAY_RECT1 = PLAY_TEXT1.get_rect(topleft=(0, 0))
            PLAY_TEXT = get_font(45).render("FCFS Scheduling.", True, "White")
            SCREEN.blit(PLAY_TEXT1, PLAY_RECT1)
            PLAY_RECT = PLAY_TEXT.get_rect(center=(640, 60))
            Cir_TEXT = get_font(18).render(str(val1), True, "Red")
            Cir_RECT = Cir_TEXT.get_rect(center=cir_rect.size)
            if flag :
                Cir_TEXT2 = get_font(18).render(str(val2), True, "Red")
                Cir_RECT2 = Cir_TEXT.get_rect(center=cir_rect2.size)
                SCREEN.blit(Cir_TEXT2, Cir_RECT2)
            if flag2 :
                Cir_TEXT3 = get_font(18).render(str(val3), True, "Red")
                Cir_RECT3 = Cir_TEXT3.get_rect(center=cir_rect3.size)
                SCREEN.blit(Cir_TEXT3, Cir_RECT3)
            SCREEN.blit(PLAY_TEXT, PLAY_RECT)
            SCREEN.blit(Cir_TEXT, Cir_RECT)
            x = x + 1
            cir_rect.update(0, 0, x, y)
            cir_rect2.update(0, 0, z, c)
            cir_rect3.update(0, 0, a, b)
            if a > 1200 :
                sc1 = False
                sc2 = True
            if flag2 :
                if circle.colliderect(pix) :
                    b = b + 1
                    val3 = 0
            if flag :
                if cirl.colliderect(gex) :
                    c = c + 1
                    flag2 = True
                    val2 = 0
            ans = cir.collidelist(collist)
            if ans == 1 :
                y = y + 1
                flag = True
                val1=0
        if sc2 :
            SJF.SJF()

        for event in pygame.event.get() :
            if event.type == pygame.QUIT :
                pygame.quit()
                sys.exit()
            if event.type == pygame.KEYDOWN :
                pygame.display.flip()
        pygame.display.update()
FCFS()