from dataclasses import dataclass
from math import pi

import pygame as pg

@dataclass
class Transform:
    
    position: pg.Vector2
    rotation: float = 0.0
    scale: float = 1.0
    parent: 'Transform' = None

    @property
    def global_position(self):
        if self.parent is None:
            return self.position
        return self.position + self.parent.global_position
    
    @property
    def global_rotation(self):
        if self.parent is None:
            return self.rotation
        return self.position + self.parent.global_rotation
    
    @property
    def global_scale(self):
        if self.parent is None:
            return self.scale
        return self.scale * self.parent.global_scale

    @property
    def global_degrees(self):
        return self.global_rotation * (180.0 / pi)

    @property
    def degrees(self):
        return self.rotation * (180.0 / pi)