player.py

import pygame
from constants import *
from circleshape import *
from bullet import Shot

class Player(CircleShape):
    def __init__(self, x, y):
        super().__init__(x, y, PLAYER_RADIUS)
        self.rotation = 0
        self.timer = 0

    def triangle(self):
        forward = pygame.Vector2(0, 1).rotate(self.rotation)
        right = pygame.Vector2(0, 1).rotate(self.rotation + 90) * self.radius / 1.5
        a = self.position + forward * self.radius
        b = self.position - forward * self.radius - right
        c = self.position - forward * self.radius + right
        return [a, b, c]

    def draw(self, screen):
        pygame.draw.polygon(screen, 
                            "white", 
                            self.triangle(), 
                            2)
        
    def rotate(self, dt):
        self.rotation += PLAYER_TURN_SPEED * dt

    def update(self, dt):
        keys = pygame.key.get_pressed()

        if keys[pygame.K_a]:
            self.rotate(dt)
        if keys[pygame.K_d]:
            self.rotate(-dt)
        
        if keys[pygame.K_w]:
            self.move(dt)
        if keys[pygame.K_s]:
            self.move(-dt)
        
        if self.timer > 0:
            self.timer -= dt
        else:
            if keys[pygame.K_SPACE]:
                self.shoot()
                self.timer = PLAYER_SHOT_COOLDOWN
                

    def move(self, dt):
        forward = pygame.Vector2(0, 1).rotate(self.rotation)
        self.position += forward * PLAYER_SPEED * dt

    def shoot(self):
        shot = Shot(self.position.x, self.position.y)
        shot.velocity = pygame.Vector2(0, 1).rotate(self.rotation) * PLAYER_SHOT_SPEED