Question

Tanks课程的一部分：

（在下面的代码中：如果没有单词：'turret'包含在下面的任何变量中，那么变量是关于坦克的）

class Tanks(pygame.sprite.Sprite):
def __init__(self,image,location,angle,speed,x_change,y_change,turret_image,turret_angle):
    pygame.sprite.Sprite.__init__(self)
    self.image = pygame.image.load(image)
    self.turret_image = pygame.image.load(turret_image)

    #Trect is turret rect
    self.Trect = self.turret_image.get_rect()

    self.rect = self.image.get_rect()
    self.rect.left,self.rect.top=location
    self.Trect.centerx,self.Trect.bottom = self.rect.centerx,self.rect.centery

经过一些轮换代码......

RealTank.image，rect，turret_image，Trect已更改为旋转图像

screen.blit(RealTank.image,RealTank.rect)
screen.blit(RealTank.turret_image,RealTank.Trect)

炮塔的角度由键'a'和键'd'

改变

if event.key == pygame.K_a:
   turret_angle_change = 5
elif event.key == pygame.K_d:
   turret_angle_change = -5

对于测试我画了一个红色圆圈以找到我的子弹的起点

pygame.draw.circle(screen,red,[RealTank.Trect.centerx,RealTank.Trect.top],5,0)

但奇怪的是，圆圈以一种奇怪的方式旋转

有谁知道我做错了什么？

=============================================== ============================

我的所有代码都在下面（不必要）

图片：

import pygame,math
pygame.init()
red = (155,0,0)
class Tanks(pygame.sprite.Sprite):
    def __init__(self,image,location,angle,speed,x_change,y_change,turret_image,turret_angle):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load(image)
        self.turret_image = pygame.image.load(turret_image)
        #Trect is turret rect
        self.Trect = self.turret_image.get_rect()

        self.rect = self.image.get_rect()
        self.rect.left,self.rect.top=location
        self.Trect.centerx,self.Trect.bottom = self.rect.centerx,self.rect.centery
        self.angle = angle
        self.turret_angle = turret_angle
        self.speed = speed
        self.x_change = x_change
        self.y_change = y_change

        if self.turret_angle == 360:
            self.turret_angle = 0
        if self.angle == 360:
            self.angle = 0

    def rotate(self):
        rot_image = pygame.transform.rotate(self.image,self.angle)
        rot_rect = rot_image.get_rect(center = self.rect.center)
        return rot_image,rot_rect

    def turret_rotate(self):
        turret_rot_image = pygame.transform.rotate(self.turret_image,self.turret_angle)
        turret_rot_rect = turret_rot_image.get_rect(center = self.Trect.midbottom)
        return turret_rot_image,turret_rot_rect

    def moving_after_angle_change(self):
        x=round(math.cos(math.radians(self.angle+90)),1)*self.speed
        y=round(math.sin(math.radians(self.angle-90)),1)*self.speed
        return x,y

    def shoot(self):
        #print(self.turret_angle)
        print(self.Trect.x,self.Trect.y)

        print(pygame.mouse.get_pos())

#initial
player_image_str = 'Tank.png'
player_turret_str = 'turret - Copy.png'

clock = pygame.time.Clock()
FPS = 30

display_width,display_height = 900,600
screen = pygame.display.set_mode([display_width,display_height])

player_location = [600,300]
player_angle = 0
player_angle_change = 0
player_speed = 0
player_x_change=0
player_y_change=0
RealTank_x_change_store=0
RealTank_y_change_store=0

turret_angle = 0
turret_angle_change = 0
#main
running = True
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_a:
                turret_angle_change = 5
            elif event.key == pygame.K_d:
                turret_angle_change = -5
            elif event.key == pygame.K_UP:
                player_speed=2
            elif event.key == pygame.K_DOWN:
                player_speed=-2
            elif event.key == pygame.K_LEFT:
                player_angle_change = 2
            elif event.key == pygame.K_RIGHT:
                player_angle_change = -2
        if event.type == pygame.KEYUP:
            if event.key == pygame.K_a or event.key == pygame.K_d:
                turret_angle_change = 0
            elif event.key == pygame.K_UP:
                player_speed = 0
            elif event.key == pygame.K_DOWN:
                player_speed = 0
            elif event.key == pygame.K_LEFT:
                player_angle_change = 0
            elif event.key == pygame.K_RIGHT:
                player_angle_change = 0

    player_angle+=player_angle_change
    turret_angle+=turret_angle_change
    RealTank = Tanks(player_image_str,player_location,player_angle,player_speed,
                     player_x_change,player_y_change,player_turret_str,turret_angle)

    RealTank.image,RealTank.rect=RealTank.rotate()

    RealTank.turret_image,RealTank.Trect = RealTank.turret_rotate()

    RealTank.x_change,RealTank.y_change=RealTank.moving_after_angle_change()

    RealTank_x_change_store += RealTank.x_change
    RealTank_y_change_store += RealTank.y_change
    RealTank.Trect.centerx +=RealTank_x_change_store
    RealTank.Trect.centery +=RealTank_y_change_store
    RealTank.rect.centerx += RealTank_x_change_store
    RealTank.rect.centery += RealTank_y_change_store
    RealTank.shoot()
    screen.fill([0,0,0])
    screen.blit(RealTank.image,RealTank.rect)
    screen.blit(RealTank.turret_image,RealTank.Trect)
    ######### for test only
    pygame.draw.circle(screen,red,[RealTank.Trect.centerx,RealTank.Trect.top],5,0)
    ######
    pygame.display.update()
    clock.tick(FPS)

pygame.quit()
quit()

Answer 1

你需要这样的东西

a = RealTank.Trect.centerx + math.cos(math.radians(RealTank.turret_angle+90))*55
b = RealTank.Trect.centery + math.sin(math.radians(RealTank.turret_angle-90))*55

pygame.draw.circle(screen,red,[int(a), int(b)],5,0)

你必须使用炮塔长度而不是100

也许它需要一些计算，因为它不能顺利进行。

编辑：我删除了round()，现在它移动得更顺畅了。（我将100改为55）。

pygame：我试图从我的坦克射击子弹，但我找不到子弹的起点

1 个答案: