SpaceInvaders/ships.py at master · RashedRifat/SpaceInvaders · GitHub

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import pygame
import os
import random
from lasers import Laser

# Load Images
RED_SPACE_SHIP = pygame.image.load(os.path.join("assets", "pixel_ship_red_small.png"))
GREEN_SPACE_SHIP = pygame.image.load(os.path.join("assets", "pixel_ship_green_small.png"))
BLUE_SPACE_SHIP = pygame.image.load(os.path.join("assets", "pixel_ship_blue_small.png"))
YELLOW_SPACE_SHIP = pygame.image.load(os.path.join("assets", "pixel_ship_yellow.png"))

# Load lasers
RED_LASER = pygame.image.load(os.path.join("assets", "pixel_laser_red.png"))
GREEN_LASER = pygame.image.load(os.path.join("assets", "pixel_laser_green.png"))
BLUE_LASER = pygame.image.load(os.path.join("assets", "pixel_laser_blue.png"))
YELLOW_LASER = pygame.image.load(os.path.join("assets", "pixel_laser_yellow.png"))


# Abstract ship class
class Ship:
    COOLDOWN = 30

    def __init__(self, x, y, health=100):
        self.x = x
        self.y = y
        self.health = health
        self.ship_img = None
        self.laser_img = None
        self.lasers = []
        self.cool_down_counter = 0

    def draw(self, window):
        window.blit(self.ship_img, (self.x, self.y))
        for laser in self.lasers:
            laser.draw(window)

    def move_lasers(self, vel, obj, HEIGHT):
        self.cooldown()
        for laser in self.lasers:
            laser.move(vel)
            if laser.off_screen(HEIGHT):
                self.lasers.remove(laser)
            elif laser.collision(obj):
                obj.health -= 10
                obj.streak = 0
                self.lasers.remove(laser)


    def cooldown(self):
        if self.cool_down_counter >= self.COOLDOWN:
            self.cool_down_counter = 0
        elif self.cool_down_counter > 0:
            self.cool_down_counter += 1

    def shoot(self):
        if self.cool_down_counter == 0:
            laser = Laser(self.x, self.y, self.laser_img)
            self.lasers.append(laser)
            self.cool_down_counter = 1

    def get_width(self):
        return self.ship_img.get_width()

    def get_height(self):
        return self.ship_img.get_height()

# Player object, inherits from Ship
class Player(Ship):
    def __init__(self, x, y, health=100):
        super().__init__(x, y, health)
        self.ship_img = YELLOW_SPACE_SHIP
        self.laser_img = YELLOW_LASER
        self.mask = pygame.mask.from_surface(self.ship_img)
        self.max_health = health
        self.streak = 0

    def move_lasers(self, vel, objs, special_items, HEIGHT):
        self.cooldown()
        for laser in self.lasers:
            laser.move(vel)
            if laser.off_screen(HEIGHT):
                self.lasers.remove(laser)

            else:
                # If lasers hit an enemy, remove them
                for obj in objs:
                    if laser.collision(obj):
                        objs.remove(obj)
                        self.streak += 1
                        if laser in self.lasers:
                            self.lasers.remove(laser)

                # If lasers hit a special object, perform some action
                for item in special_items:
                    if laser.collision(item):
                        item.on_collision(self)
                        special_items.remove(item)
                        print("Hit a special object...")
                        if laser in self.lasers:
                            self.lasers.remove(laser)

    def draw(self, window):
        super().draw(window)
        self.healthbar(window)

    def healthbar(self, window):
        pygame.draw.rect(window, (255,0,0), (self.x, self.y + self.ship_img.get_height() + 10, self.ship_img.get_width(), 10))
        pygame.draw.rect(window, (0,255,0), (self.x, self.y + self.ship_img.get_height() + 10, self.ship_img.get_width() * (self.health/self.max_health), 10))

    def heal(self, heal_amount):
        self.health = 100 if self.health + heal_amount > 100 else self.health + heal_amount

    def shoot(self, level=0):
        if self.cool_down_counter == 0:
            if level < 3:
                laser = Laser(self.x, self.y, self.laser_img)
                self.lasers.append(laser)
            else:
                laser1 = Laser(int(self.x - self.get_width()/4), self.y, self.laser_img)
                self.lasers.append(laser1)
                laser2 = Laser(int(self.x + self.get_width()/4), self.y, self.laser_img)
                self.lasers.append(laser2)
            self.cool_down_counter = 1


# Enemy Ship
class Enemey(Ship):
    COLOR_MAP = {
        "red" : (RED_SPACE_SHIP, RED_LASER, 0),
        "green": (GREEN_SPACE_SHIP, GREEN_LASER, 3),
        "blue" : (BLUE_SPACE_SHIP, BLUE_LASER, -3)
    }

    def __init__(self, x, y, color, health=100):
        super().__init__(x, y, health)
        self.ship_img, self.laser_img, self.multiplier = self.COLOR_MAP[color]
        self.mask = pygame.mask.from_surface(self.ship_img)

    def move(self, vel, WIDTH):
        self.y += vel
        r_int = random.randrange(0, 200)
        if  r_int == 1:
            self.x -= 15 if self.x - 15 > 0 else 0
        elif r_int == 2:
            self.x += 15 if self.x + 15 + self.get_width() < WIDTH else 0

    def shoot(self):
        if self.cool_down_counter == 0:
            laser = Laser(self.x-20, self.y, self.laser_img, self.multiplier)
            self.lasers.append(laser)
            self.cool_down_counter = 1