Added files, initial commit
This commit is contained in:
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__pycache__/lpgf.cpython-311.pyc
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__pycache__/lpgf.cpython-311.pyc
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244
boid.py
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244
boid.py
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import pygame as pg
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from math import sqrt, ceil, floor
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from random import random, randint
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from lpgf import Pane, DynamicPane, isoceles_triangle
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SCREEN_DIMENSIONS = (1500, 1000)
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PADDING_CONSTANT = 0.75
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FRAME_RATE = 144
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N_BOIDS = 250
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def clamp(x, min, max) -> int:
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if x < min:
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return min
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if x > max:
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return max
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return x
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def surface_color(position: pg.Vector2, surf: pg.Surface) -> tuple[int,int,int]:
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rect = surf.get_rect()
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x = clamp(position.x, 0, rect.width)
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y = clamp(position.y, 0, rect.height)
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return (
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ceil(255 * (x / rect.width)),
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ceil(255 * (y / rect.height)),
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100
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)
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class Boid:
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def __init__(
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self,
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search_radius: float,
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separation_radius: float,
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max_speed: float,
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cohesion: float,
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alignment: float,
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separation: float,
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bounds: pg.Rect,
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image: pg.Surface = isoceles_triangle((15,10)) #this is the same triangle instance on purpose
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):
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self.position = pg.Vector2(randint(bounds.left, bounds.right), randint(bounds.top, bounds.bottom))
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self.velocity = pg.Vector2(2*(random()-0.5)*max_speed, 2*(random()-0.5)*max_speed) #Know this can technically produce velicities higher than max, dont care
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self._acceleration = pg.Vector2(0,0)
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self._max_speed = max_speed
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self.cohesion = cohesion
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self.alignment = alignment
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self.separation = separation
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self.bounds = bounds
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self._radius_squared = search_radius**2
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self._separation_radius_squared = separation_radius**2
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self._image = pg.transform.scale_by(image, random() * 0.5 + 0.5)
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@property
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def search_radius(self):
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return sqrt(self._radius_squared)
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@search_radius.setter
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def search_radius(self, rad: float):
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self._radius_squared = rad**2
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@property
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def separation_radius(self):
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return sqrt(self._separation_radius_squared)
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@separation_radius.setter
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def separation_radius(self, speed: float):
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self._max_speed_squared = speed**2
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def calculate_next_timestep(self, boids: list['Boid']):
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centroid_target = pg.Vector2(0,0)
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velocity_target = pg.Vector2(0,0)
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nearby = 0
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for b in boids:
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if (self.position-b.position).length_squared() > self._radius_squared or b is self:
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continue
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centroid_target += b.position
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velocity_target += b.velocity
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nearby += 1
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if (self.position - b.position).length_squared() < self._separation_radius_squared:
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self._acceleration += self.separation * (self.position - b.position).normalize()
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if nearby > 0:
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centroid_target /= nearby
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velocity_target /= nearby
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self._acceleration += self.cohesion * (centroid_target - self.position).normalize()
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self._acceleration += self.alignment * velocity_target.normalize()
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if self.position.y < self.bounds.top:
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self._acceleration += pg.Vector2(0,150)
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elif self.position.y > self.bounds.bottom:
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self._acceleration -= pg.Vector2(0,150)
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if self.position.x < self.bounds.left:
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self._acceleration += pg.Vector2(150,0)
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elif self.position.x > self.bounds.right:
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self._acceleration -= pg.Vector2(150,0)
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def attract(self, p: pg.Vector2, radius: float, strength: float) -> None:
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diff = p - self.position
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if diff.length_squared() < radius**2:
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self._acceleration += strength * diff.normalize()
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def update(self, dt: float) -> None:
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self.velocity += dt * self._acceleration
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if self.velocity.length_squared() > self._max_speed**2:
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self.velocity.scale_to_length(self._max_speed)
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self.position += self.velocity * dt
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self._acceleration = pg.Vector2(0,0)
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def draw(self, surface: pg.Surface):
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image = self._image.copy() #as per pygame docs, do not continuously rotate an image. Make a copy of a prefab image
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image.fill(surface_color(self.position, surface), special_flags=pg.BLEND_ADD)
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image = pg.transform.rotate(image, self.velocity.angle_to(pg.Vector2(1,0)))
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surface.blit(image, self.position)
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class BoidSim:
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def set_attractor(self, m_pos):
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self._attractor = m_pos
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def clear_attractor(self, _):
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self._attractor = None
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def set_repulsor(self, m_pos):
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self._repulsor = m_pos
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def clear_repulsor(self, _):
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self._repulsor = None
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def clear_all(self, m_pos):
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self.clear_repulsor(m_pos)
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self.clear_attractor(m_pos)
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def spawn(self, m_pos):
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boid = Boid(
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150,
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20,
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100,
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80,
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80,
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100,
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self._pane.get_rect().scale_by(0.75),
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)
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boid.position = pg.Vector2(m_pos)
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self._boids.append(boid)
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def __init__(self, n_boids: int, pane: Pane):
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self._pane: Pane = pane
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self._pane.on_click_held = self.set_attractor
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self._pane.on_click_release = self.clear_attractor
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self._pane.on_right_click = self.set_repulsor
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self._pane.on_right_click_release = self.clear_repulsor
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self._pane.on_middle_click = self.spawn
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self._pane.on_mouse_exit = self.clear_all
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self._attractor: tuple[int,int] | None = None
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self._repulsor: tuple[int,int] | None = None
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self._boids: list[Boid] = []
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bounds = pane.get_rect_position_zero().scale_by(0.75)
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for _ in range(n_boids):
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self._boids.append(
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Boid(
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150,
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20,
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100,
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80,
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80,
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100,
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bounds,
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)
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)
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def update(self, dt: float):
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for boid in self._boids:
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boid.calculate_next_timestep(self._boids)
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if self._attractor:
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boid.attract(self._attractor, 200, 1000)
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if self._repulsor:
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boid.attract(self._repulsor, 200, -1000)
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boid.update(dt)
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boid.draw(self._pane)
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def main():
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running = True
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pg.init()
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clock = pg.time.Clock()
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cat = pg.image.load("cat.png")
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screen: Pane = Pane.master_pane(SCREEN_DIMENSIONS, (0,0,255))
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boid_pane1 = DynamicPane(
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(cat.get_rect().width, cat.get_rect().height),
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(10,10),
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screen,
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10,
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blanking_color=(150,0,150),
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background_image=cat
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)
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boid_pane2 = DynamicPane(
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(200,200),
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(250,250),
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boid_pane1.content_pane,
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10,
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blanking_color=(0,0,0,100),
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ribbon_color=(0,50,100,180),
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content_flags=pg.SRCALPHA,
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ribbon_flags=pg.SRCALPHA
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)
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DynamicPane(
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(100,100),
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(0,0),
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screen,
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10,
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blanking_color=(255,255,255,0),
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background_image=isoceles_triangle((100,90)),
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content_flags=pg.SRCALPHA
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)
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sim1 = BoidSim(20, screen)
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sim2 = BoidSim(20, boid_pane2.content_pane)
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while running:
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screen.blank()
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screen.update()
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screen.poll_mouse()
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dt = clock.tick(FRAME_RATE) / 1000
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print(screen._subpanes)
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events = pg.event.get()
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for event in events:
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if event.type == pg.QUIT:
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running = False
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sim1.update(dt)
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sim2.update(dt)
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screen.draw()
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pg.display.flip()
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if __name__ == "__main__":
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main()
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269
lpgf.py
Normal file
269
lpgf.py
Normal file
@@ -0,0 +1,269 @@
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from typing import Any
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import pygame as pg
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from math import ceil
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def isoceles_triangle(dimensions: tuple[int, int], color = (0,0,0,255)) -> pg.Surface:
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surf = pg.Surface(dimensions, pg.SRCALPHA)
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surf.fill((255,255,255,0))
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pg.draw.polygon(
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surf,
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color,
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(
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(dimensions[0], dimensions[1] / 2),
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(0,0),
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(0, dimensions[1])
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)
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)
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return surf
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def circle(radius, color: tuple[int,int,int,int] = (0,0,0,255)) -> pg.Surface:
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surf = pg.Surface((radius, radius), pg.SRCALPHA)
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surf.fill((255,255,255,0))
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pg.draw.circle(surf, color, (radius / 2, radius / 2), radius)
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return surf
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class Pane(pg.Surface):
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on_click = lambda self, m_pos: None
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on_click_release = lambda self, m_pos: None
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on_click_held = lambda self, m_pos: None
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on_middle_click = lambda self, m_pos: None
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on_middle_click_release = lambda self, m_pos: None
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on_middle_click_held = lambda self, m_pos: None
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on_right_click = lambda self, m_pos: None
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on_right_click_release = lambda self, m_pos: None
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on_right_click_held = lambda self, m_pos: None
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on_mouse_move = lambda self, l_m_pos, m_pos: None
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on_mouse_enter = lambda self, m_pos: None
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on_mouse_exit = lambda self, m_pos: None
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def get_screen_position(self):
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if isinstance(self._parent, Pane):
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screen_position = self._parent.get_screen_position()
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return (
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self.position[0] + screen_position[0],
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self.position[1] + screen_position[1]
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)
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return self.position
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def get_screen_rect(self):
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return self.get_rect().move(self.get_screen_position())
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def get_rect(self) -> pg.Rect:
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return super().get_rect().move(*self.position)
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def get_rect_position_zero(self) -> pg.Rect:
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return super().get_rect()
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def master_pane(dimensions: tuple[int,int], blanking_color: tuple[int,int,int] = (0,0,0), **kwargs) -> 'Pane':
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return Pane(
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dimensions,
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(0,0),
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pg.display.set_mode(dimensions, **kwargs),
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blanking_color=blanking_color,
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**kwargs
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)
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def __init__(
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self,
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dimensions: tuple[int,int],
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position: tuple[int, int],
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parent: pg.Surface,
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blanking_color: tuple[int,int,int] = (0,0,0),
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background_image: pg.Surface | None = None,
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flags=0
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):
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self._m_last_state = [False,False,False]
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self._m_last_inframe = False
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self._m_last_pos = pg.mouse.get_pos()
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self.position = position
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self.blanking_color = blanking_color
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self._background_image = background_image
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self._subpanes: list['Pane'] = []
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if isinstance(parent, Pane):
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parent.add_subpane(self)
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else:
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self._parent = parent
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super().__init__(dimensions, flags)
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def add_subpane(self, subpane: 'Pane') -> None:
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subpane._parent = self
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self._subpanes.append(subpane)
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def blank(self) -> None:
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self.fill(self.blanking_color)
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if self._background_image:
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self.blit(self._background_image, (0,0))
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for subpane in self._subpanes:
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subpane.blank()
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def poll_mouse(self, _m_upper_pane_position: tuple[int,int] | None = None, _occluded: bool = False) -> None:
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if not _m_upper_pane_position:
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_m_upper_pane_position = pg.mouse.get_pos()
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m_pos = (
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_m_upper_pane_position[0] - self.position[0],
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_m_upper_pane_position[1] - self.position[1]
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)
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for subpane in self._subpanes[::-1]:
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subpane.poll_mouse(m_pos, _occluded)
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if not _occluded and subpane.get_rect().collidepoint(m_pos): _occluded = True
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m_state = pg.mouse.get_pressed()
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m_inframe = not _occluded and pg.mouse.get_focused() and self.get_rect_position_zero().collidepoint(m_pos)
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if not m_state[0] and self._m_last_state[0]:
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self.on_click_release(m_pos)
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self._m_last_state[0] = False
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if not m_state[1] and self._m_last_state[1]:
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self.on_middle_click_release(m_pos)
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self._m_last_state[1] = False
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if not m_state[2] and self._m_last_state[2]:
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self.on_right_click_release(m_pos)
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self._m_last_state[2] = False
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|
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if m_inframe:
|
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if m_state[0]:
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self.on_click_held(m_pos)
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if not self._m_last_state[0]: self.on_click(m_pos)
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if m_state[1]:
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self.on_middle_click_held(m_pos)
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if not self._m_last_state[1]: self.on_middle_click(m_pos)
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if m_state[2]:
|
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self.on_right_click_held(m_pos)
|
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if not self._m_last_state[2]: self.on_right_click(m_pos)
|
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if m_pos != self._m_last_pos:
|
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self.on_mouse_move(self._m_last_pos, m_pos)
|
||||
|
||||
for index, state in enumerate(m_state):
|
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if state: self._m_last_state[index] = True
|
||||
|
||||
#this is done so the on_click_release callback is still called if mouse is out of frame
|
||||
|
||||
if m_inframe and not self._m_last_inframe:
|
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self.on_mouse_enter(m_pos)
|
||||
elif not m_inframe and self._m_last_inframe:
|
||||
self.on_mouse_exit(m_pos)
|
||||
|
||||
self._m_last_inframe = m_inframe
|
||||
self._m_last_pos = m_pos
|
||||
|
||||
def update(self, **draw_options):
|
||||
for subpane in self._subpanes:
|
||||
subpane.update()
|
||||
|
||||
def move_to_front(self, item):
|
||||
if item not in self._subpanes:
|
||||
return
|
||||
self._subpanes.remove(item)
|
||||
self._subpanes.append(item)
|
||||
|
||||
def draw(self, special_flags: int = 0):
|
||||
for subpane in self._subpanes:
|
||||
subpane.draw()
|
||||
self._parent.blit(self, self.position, special_flags=special_flags)
|
||||
|
||||
class DynamicPane(Pane):
|
||||
|
||||
@property
|
||||
def content_pane(self):
|
||||
return self._content_pane
|
||||
|
||||
def _stick(self, _):
|
||||
self._stuck = True
|
||||
self._parent.move_to_front(self)
|
||||
|
||||
def _unstick(self, _):
|
||||
self._stuck = False
|
||||
parent_rect = self._parent.get_rect()
|
||||
self_rect = self.get_rect()
|
||||
if not parent_rect.collidepoint(self_rect.center):
|
||||
self.position = (
|
||||
parent_rect.center[0] - ceil(self_rect.width / 2),
|
||||
parent_rect.center[1] - ceil(self_rect.height / 2)
|
||||
)
|
||||
|
||||
def __init__(
|
||||
self,
|
||||
dimensions: tuple[int,int],
|
||||
position: tuple[int,int,int],
|
||||
parent: Pane,
|
||||
ribbon_height: int,
|
||||
ribbon_color: tuple[int,int,int] = (255,255,255),
|
||||
blanking_color: tuple[int,int,int] = (0,0,0),
|
||||
background_image: pg.Surface | None = None,
|
||||
content_flags=0,
|
||||
ribbon_flags=0
|
||||
):
|
||||
super().__init__(
|
||||
dimensions,
|
||||
position,
|
||||
parent,
|
||||
(255,255,255,0),
|
||||
flags=pg.SRCALPHA
|
||||
)
|
||||
self._ribbon: Pane = Pane(
|
||||
(dimensions[0], ribbon_height),
|
||||
(0,0),
|
||||
self,
|
||||
ribbon_color,
|
||||
flags=ribbon_flags
|
||||
)
|
||||
self._content_pane: Pane = Pane(
|
||||
(dimensions[0], dimensions[1] - ribbon_height),
|
||||
(0, ribbon_height),
|
||||
self,
|
||||
blanking_color=blanking_color,
|
||||
background_image=background_image,
|
||||
flags=content_flags
|
||||
)
|
||||
self._stuck = False
|
||||
self._ribbon.on_click = self._stick
|
||||
self._ribbon.on_click_release = self._unstick
|
||||
|
||||
def update(self):
|
||||
m_pos = pg.mouse.get_pos()
|
||||
s_pos = self.get_screen_position()
|
||||
m_pane_pos = (
|
||||
m_pos[0] - s_pos[0],
|
||||
m_pos[1] - s_pos[1]
|
||||
)
|
||||
if self._stuck:
|
||||
delta = (
|
||||
m_pane_pos[0] - self._m_last_pos[0],
|
||||
m_pane_pos[1] - self._m_last_pos[1]
|
||||
)
|
||||
self.position = (
|
||||
self.position[0] + delta[0],
|
||||
self.position[1] + delta[1]
|
||||
)
|
||||
|
||||
super().update()
|
||||
|
||||
|
||||
class Slider(Pane):
|
||||
|
||||
def __init__(
|
||||
self,
|
||||
dimensions: tuple[int,int],
|
||||
parent: Pane,
|
||||
knob_size: int,
|
||||
bar_thickness: int,
|
||||
knob_color: tuple[int,int,int] = (255,255,255),
|
||||
bar_color: tuple[int,int,int] = (150,150,150)
|
||||
):
|
||||
self._bar = Pane(
|
||||
(dimensions[0], bar_thickness),
|
||||
(0, ceil(dimensions[1] / 2) + ceil(bar_thickness / 2)),
|
||||
self,
|
||||
bar_color
|
||||
)
|
||||
self._knob = Pane(
|
||||
(knob_size, knob_size),
|
||||
(0, ceil(dimensions[1] / 2) + ceil(knob_size / 2)),
|
||||
self,
|
||||
(0,0,0,0),
|
||||
background_image=circle(knob_size, knob_color)
|
||||
)
|
||||
|
||||
Reference in New Issue
Block a user