如何使一条线水平和垂直跟随鼠标

如何解决如何使一条线水平和垂直跟随鼠标

我想在 x 轴和 y 轴上沿着鼠标光标绘制一条线，但我不太确定该怎么做。我只想让 x 线穿过整个窗口而不转动，但只上下跟随鼠标和 y 线做同样的事情，但只向左和向右跟随鼠标。 pygame 窗口为 400 x 400，具有我正在努力处理的代码的函数名称称为“drawLine(pos)”。

感谢您的帮助！

代码：

import pygame


WIDTH,HEIGHT = 400,400
WINDOW = pygame.display.set_mode((WIDTH,HEIGHT))

# Defining Color variables
BLACK = (0,0)
WHITE = (255,255,255)
RED = (255,0)
BLUE = (0,0)

# Drawing the Circle
def drawCircle(pos):
    pygame.draw.circle(WINDOW,WHITE,pos,10)

# Drawing Vertical Line
def drawLine(pos):
    x = pygame.mouse.get_pos()[0]
    y = pygame.mouse.get_pos()[1]
    line = pygame.draw.line(WINDOW,RED,(WIDTH,HEIGHT/2),(0,2)
    lineRect = line.get_rect(center=(x,y))
    WINDOW.blit(line,lineRect)

# Adding Text
def location_message(pos_type,locX,locY):
    font = pygame.font.Font('freesansbold.ttf',32)
    textSurf = font.render(pos_type,True,WHITE)
    textRect = textSurf.get_rect()
    textRect.center = (locX,locY)
    WINDOW.blit(textSurf,textRect)

# Main function - runs everything
def main():
    pygame.init()
    run = True

    pygame.display.update()
    while run:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                run = False
            if event.type == pygame.MOUSEMOTION:
                # Defining mouse position Variables
                mouse_position = pygame.mouse.get_pos()
                x = pygame.mouse.get_pos()[0]
                y = pygame.mouse.get_pos()[1]

                # Polishing x & y text numbers
                if x < 100:
                    locationX = 60
                else:
                    locationX = 70

                if y < 100:
                    locationY = 60
                else:
                    locationY = 70
                # Printing mouse x & y cordinates
                print("Mouse Location: " + str(mouse_position))
                # Drawing Circle on mouse position
                WINDOW.fill(BLACK)
                drawCircle(mouse_position)
                drawLine(mouse_position)
                # Adding Text with Mouse X & Y Cordinates
                location_message("X: ",25,15)
                location_message("Y: ",50)
                location_message(str(x),(locationX),15)
                location_message(str(y),(locationY),50)
                # Update pygame display
                pygame.display.update()
    pygame.quit()

# Executes everything
if __name__ == "__main__":
    main()

解决方法

我通过将高度设置为 y 来解决它