How to rotate an image(player) to the mouse direction?

Question

Im thinking about making a 2d shooting game in pygame and i want to make my player(Player_1) point to the mouse direction.I looked for a solution for hours and tried all solution i could find but none had worked so can you pls help me ? Here's my code: ``` import pygame, sys, os from pygame.locals import * os.environ['SDL_VIDEO_CENTERED'] = '1' pygame.init() #Exit settings def quit(): pygame.quit() sys.quit() def events(): for event in pygame.event.get(): if event.type == QUIT or (event.type == KEYDOWN and event.key == K_ESCAPE): quit() #IDS CLOCK=pygame.time.Clock() FPS=120 DS=pygame.display.set_mode((0,0), pygame.FULLSCREEN) pygame.display.set_caption("Shooting simulator") W,H=DS.get_size() P_X=W/2-50 P_Y=H/2-50 #Colors Red=pygame.Color("#FF0000") Blue=pygame.Color("#0000FF") Green=pygame.Color("#00FF00") Black=pygame.Color("#000000") White=pygame.Color("#FFFFFF") #IGT(in game things) Player_1=pygame.image.load("Img/Player_1.png").convert() def game_loop(): while True: events() DS.f…

Accepted Answer

You have to compute the angle of the vector from the player to the mouse. get the mouse position by `pygame.mouse.get_pos()` and the rectangle (`pygame.Rect`) around the player:

```
mx, my = pygame.mouse.get_pos()
player_rect = Player_1.get_rect(topleft=(P_X,P_Y))
```

Calculate the vector from the player to the mouse and compute the angle of vector by `math.atan2`. The y-axis needs to be reversed (`-dy`) as the y-axis is generally pointing up, but in the PyGame coordinate system the y-axis is pointing down.

```
dx, dy = mx - player_rect.centerx, player_rect.centery - my
angle = math.degrees(math.atan2(-dy, dx)) - correction_angle
```

In addition, a correction angle must be deducted (`- correction_angle`). The correction angle depends on the Sprite. If the Sprite

is looking to the right, the correction angle is 0: `correction_angle = 0` is looking up, the correction angle is 90: `correction_angle = 90` is looking to the left, the correction angle is 180: `correction_angle = 180` is looking down, the correction angle is 270: `correction_angle = 270`

Rotate the player with `pygame.transform.rotate()` by the angle around its center: (See also How do I rotate an image around its center using Pygame?)

```
rot_image = pygame.transform.rotate(Player_1, angle)
rot_image_rect = rot_image.get_rect(center=player_rect.center)
```

Minimal example: repl.it/@Rabbid76/PyGame-RotateWithMouse

```
import math
import pygame

pygame.init()
window = pygame.display.set_mode((300, 300))
player = pygame.image.load("player.png").convert_alpha()

#   0 - image is looking to the right
#  90 - image is looking up
# 180 - image is looking to the left
# 270 - image is looking down
correction_angle = 90

run = True
while run:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False

player_pos  = window.get_rect().center
    player_rect = player.get_rect(center = player_pos)

mx, my = pygame.mouse.get_pos()
    dx, dy = mx - player_rect.centerx, my - player_rect.centery
    angle = math.degrees(math.atan2(-dy, dx)) - correction_angle

rot_image      = pygame.transform.rotate(player, angle)
    rot_image_rect = rot_image.get_rect(center = player_rect.center)

window.fill((255, 255, 255))
    window.blit(rot_image, rot_image_rect.topleft)
    pygame.display.flip()

pygame.quit()
exit()
```

How to rotate an image(player) to the mouse direction?

Solution

Problem

Related problems