Question

我正在努力创造一个＆＃34; flock＆＃34; ＆＃34; boids＆＃34;并且在最初创建boids期间，不得在障碍物上创建它们。然而，它们仍然必须随机创建，障碍也是如此。

所以我随机创建了它们，然后检查它们的位置并在需要时更正它们。这似乎在大多数情况下起作用，但我认为发生的事情是，如果将Boid 1放置在障碍物1上，它会从障碍物1移开，但是它可能会落在障碍物2上。当它被移动时，它可能被移回到障碍物2上。障碍物1，不再检查。我怎样才能阻止这种情况发生？

以下是创建代码：

 def create_boids(self):
    for boid in range(self.flock_number):  # add the specified number of boids to our flock within our screen's region.
        self.boids.append(Boid(random.randint(self.region[0], self.region[2]), random.randint(self.region[1], self.region[3])))

    for boid in self.boids:  # adjust our boids so they are not created on top of an obstacle and are within our screen's region.
        for obstacle in self.obstacles:
                while colliding(boid.pos[0], boid.pos[1], boid.radius, obstacle[0][0], obstacle[0][1], obstacle[1]):
                    boid.pos[0] = random.randint(self.region[0], self.region[2])
                    boid.pos[1] = random.randint(self.region[1], self.region[3])

self.region = (x, y, width, height)  
obstacle in self.obstacles = ((x, y), radius)

这也是碰撞检查。

def colliding(c1x, c1y, c1r, c2x, c2y, c2r):
    if (int(c1x) - int(c2x)) ** 2 + (int(c1y) - int(c2y)) ** 2 <= (int(c1r) + int(c2r)) ** 2:
        return True
    return False

我不确定在这里尝试什么。感谢您的帮助！

Answer 1

有一个功能可以检查boid是否与任何障碍物发生碰撞......并且只要它保持选择新位置：

def is_boid_colliding_with_obstacles(self, boid):
    return any(colliding(boid.pos[0], boid.pos[1], boid.radius, 
                         obstacle[0][0], obstacle[0][1], obstacle[1]) 
               for obstacle in self.obstacles)

def create_boids(self):
    for boid in range(self.flock_number):  # add the specified number of boids to our flock within our screen's region.
        self.boids.append(Boid(random.randint(self.region[0], self.region[2]), random.randint(self.region[1], self.region[3])))

    for boid in self.boids:  # adjust our boids so they are not created on top of an obstacle and are within our screen's region.
        while self.is_boid_colliding_with_obstacles(boid):
            boid.pos[0] = random.randint(self.region[0], self.region[2])
            boid.pos[1] = random.randint(self.region[1], self.region[3])

或者，更好的是，首先只生成有效的boids：

def is_boid_colliding_with_obstacles(self, boid):
    return any(colliding(boid.pos[0], boid.pos[1], boid.radius, 
                         obstacle[0][0], obstacle[0][1], obstacle[1]) 
               for obstacle in self.obstacles)

def create_boid(self):
    while True:
        boid = Boid(random.randint(self.region[0], self.region[2]), 
                    random.randint(self.region[1], self.region[3]))
        if not self.is_boid_colliding_with_obstacles(boid):
            return boid

def create_boids(self):
    self.boids.extend(self.create_boid() for _ in range(self.flock_number))

在Python中同时检查列表中的所有项目

1 个答案: