[pygame] Moving an object at angles

[SheeppOSU]

I did all the code for moving at angles. I made it so that rotating to the right, it goes up to 359 and then 360 is 0. I have a slight problem that I can't figure out how to solve. The problem is with direction the object is moving. I appreciate any help in pointing out where I went wrong. Thx in advance.

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import pygame, math, sys   #Initiation pygame.init() screen = pygame.display.set_mode((500, 500))   #Constants get_ticks = pygame.time.get_ticks clock = pygame.time.Clock() fps = 60     class Object():     def __init__(self, rect):         self.rect = rect         self.ticks = 0       def draw(self):         pygame.draw.rect(screen, (255, 255, 255), self.rect)       def move(self, angle):         rectAdd = self.calculate(angle)         self.rect[0] += rectAdd[0]         self.rect[1] += rectAdd[1]               def calculate(self, angle):         angleCheck = [0, 90, 180, 270, 45, 135, 225, 315]         tanSafeAngle = angle         while tanSafeAngle > 90:             tanSafeAngle -= 90         tanAngle = math.tan(math.radians(tanSafeAngle))         if angle not in angleCheck:             movement = [0, 0]             x, num = self.directionCalculation(angle, 'side')             movement[x] = num             self.ticks += 1             while self.ticks - tanAngle > 0:                 x, num = self.directionCalculation(angle, 'forward')                 movement[x] += num                 self.ticks -= tanAngle             return movement         else:             angleMovement = {0 : (0, -1), 90 : (1, 0), 180 : (0, 1), 270 : (-1, 0),                              45 : (1, -1), 135 : (1, 1), 225 : (-1, 1), 315 : (-1, -1)}             return angleMovement[angle]       def directionCalculation(self, angle, direction):         directionDict = {'side' : {0 : (1, -1), 90 : (0, 1), 180 : (1, 1), 270 : (0, -1)},                          'forward' : {0 : (0, 1), 90 : (1, 1), 180 : (0, -1), 270 : (1, -1)}}         count = 0         for angleComparison in directionDict[direction]:             if angle > angleComparison and angle < angleComparison + 90:                 return directionDict[direction][angleComparison]

Here is the code below the class I used to test it

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obj = Object([50, 50, 50, 50]) rotation = 10 for x in range(0, 100):     for event in pygame.event.get():         if event.type == pygame.QUIT:             break     screen.fill((0, 0, 0))     obj.move(rotation)     obj.draw()     pygame.display.update()     clock.tick(fps) pygame.quit() sys.exit()

[Windspar]

Here an example

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import os import pygame from pygame.sprite import Sprite from math import radians, sin, cos    class Scene:     def on_draw(self, surface): pass     def on_event(self, event): pass     def on_update(self, delta): pass    class Manager:     def __init__(self, caption, width, height, center=True):         if center:             os.environ['SDL_VIDEO_CENTERED'] = '1'            # Basic pygame setup         pygame.display.set_caption(caption)         self.surface = pygame.display.set_mode((width, height))         self.rect = self.surface.get_rect()         self.clock = pygame.time.Clock()         self.running = False         self.delta = 0         self.fps = 60            # Scene Interface         self.scene = Scene()        def mainloop(self):         self.running = True         while self.running:             for event in pygame.event.get():                 self.scene.on_event(event)                self.scene.on_update(self.delta)             self.scene.on_draw(self.surface)             pygame.display.flip()             self.delta = self.clock.tick(self.fps)    class BaseSprite(Sprite):     def __init__(self, image, position, anchor="topleft"):         Sprite.__init__(self)         self.original_image = image         self.image = image         self.rect = image.get_rect()         setattr(self.rect, anchor, position)        def draw(self, surface):         surface.blit(self.image, self.rect)    class RotationMovementKeys:     def __init__(self, sprite, up, down, left, right):         self.sprite = sprite         self.up = up         self.down = down         self.left = left         self.right = right            self.angle = 0         self.speed = 0.04         self.rotation_speed = 0.08         self.center = pygame.Vector2(self.sprite.rect.center)         self.set_direction()        def set_direction(self):         rad = radians(self.angle)         self.direction = pygame.Vector2(sin(rad), cos(rad))        def do_rotate(self):         self.sprite.image = pygame.transform.rotate(self.sprite.original_image, self.angle)         self.sprite.rect = self.sprite.image.get_rect()         self.sprite.rect.center = self.center         self.set_direction()        def on_keydown(self, keys_press, delta):         if keys_press[self.up]:             self.center -= self.direction * delta * self.speed             self.sprite.rect.center = self.center         elif keys_press[self.down]:             self.center += self.direction * delta * (self.speed / 2)             self.sprite.rect.center = self.center            if keys_press[self.right]:             self.angle = (self.angle - self.rotation_speed * delta) % 360             self.do_rotate()         elif keys_press[self.left]:             self.angle = (self.angle + self.rotation_speed * delta) % 360             self.do_rotate()    class Example(Scene):     def __init__(self, manager):         self.create_image()         self.manager = manager         self.sprite = BaseSprite(self.rectangle, manager.rect.center, "center")         self.sprite_movement = RotationMovementKeys(self.sprite,             pygame.K_w, pygame.K_s, pygame.K_a, pygame.K_d)        def create_image(self):         self.rectangle = pygame.Surface((10, 20), pygame.SRCALPHA)         self.rectangle.fill(pygame.Color('dodgerblue'))         self.rectangle.fill(pygame.Color('white'), (2, 2, 6, 3))        def on_draw(self, surface):         surface.fill(pygame.Color("black"))         self.sprite.draw(surface)        def on_event(self, event):         if event.type == pygame.QUIT:             self.manager.running = False        def on_update(self, delta):         keys = pygame.key.get_pressed()         self.sprite_movement.on_keydown(keys, delta)    def main():     pygame.init()     manager = Manager("Rotation Example", 800, 600)     manager.scene = Example(manager)     manager.mainloop()    if __name__ == "__main__":     main()

[SheeppOSU]

I just noticed that I got the values switched on directionDict for forward and side movement. I'll switch them to how it should be and then test it out and see if it works.

[SheeppOSU]

While my does work after making that change, the example you provided is less complicated. Thank you for your help!