def move_to_player(self, player_pos, enemies):
dx = player_pos.x - self.pos.x
dy = player_pos.y - self.pos.y
vel = Vector(dx, dy)
vel.normalise()
vel.mult(self.speed)
for enemy in enemies:
if (d := sqrt((enemy.pos.x - self.pos.x)**2 +
(enemy.pos.y - self.pos.y)**2)) > 0 and d < 50:
diff = enemy.pos - self.pos
diff.normalise()
vel.sub(diff)
class Bullet():
def __init__(self, x, y, px, py):
self.pos = Vector(x, y)
self.speed = 10
self.size = 5
dx = px - x
dy = py - y
self.vel = Vector(dx, dy)
self.vel.normalise()
self.vel.mult(self.speed)
self.is_live = True
self.lethal = False
self.to_die = False
self.ttl = 100
self.till_lethal = self.ttl - 20
self.rect = pygame.Rect(self.pos.x, self.pos.y, self.size, self.size)
def show(self, screen):
if self.lethal:
c = colors.bullet
else:
c = colors.non_lethal
pygame.draw.circle(screen, c, (int(self.pos.x), int(self.pos.y)),
self.size)
def update(self):
self.pos.add(self.vel)
self.rect = pygame.Rect(self.pos.x, self.pos.y, self.size, self.size)
self.ttl -= 1
if self.ttl < self.till_lethal:
self.lethal = True
if self.pos.x >= envir.size[0]:
self.pos.x = envir.size[0]
self.vel.x *= -1
if self.to_die:
self.is_live = False
if self.pos.x <= 0:
self.pos.x = 0
self.vel.x *= -1
if self.to_die:
self.is_live = False
if self.pos.y >= envir.ground:
self.pos.y = envir.ground
self.vel.y *= -1
if self.to_die:
self.is_live = False
if self.pos.y <= 0:
self.pos.y = 0
self.vel.y *= -1
if self.to_die:
self.is_live = False
if self.ttl <= 0:
self.to_die = True
