pacman2/engine/servers/physics.py

from .server import Server


class PhysicsServer(Server):
    def __init__(self):
        super().__init__()
        self._static = []
        self._dynamic = []

    def register_component(self, component):
        if component.solid:
            if component.static:
                self._static.append(component)
            else:
                self._dynamic.append(component)
        else:
            self._area.append(component)

    def unregister_component(self, component):
        self._static.remove(component)
        self._dynamic.remove(component)

    def _check_collide(self, rect):
        for s in self._static:
            if s.rect.colliderect(rect):
                return True
        return False

    def step(self):
        for d in self._dynamic:
            x_step = -1 if d.vx < 0 else 1
            y_step = -1 if d.vy < 0 else 1
            for i in range(abs(d.vx)):
                if self._check_collide(d.rect):
                    d.parent.x -= x_step
                    d.vx = 0
                    break
                d.parent.x += x_step
            for i in range(abs(d.vy)):
                if self._check_collide(d.rect):
                    d.parent.y -= y_step
                    d.vy = 0
                    break
                d.parent.y += y_step
            # d.vx = 0
            # d.vy = 0