added player drawing onto the screen

player.py

@@ -0,0 +1,23 @@
+import circleshape
+import constants
+import pygame
+
+class Player(circleshape.CircleShape):
+    def __init__(self,x,y):
+        super().__init__(x,y,constants.PLAYER_RADIUS)
+        self.rotation = 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,(255,255,255),self.triangle(),2)
+
+
+    def rotate(self,dt):
+