Added basic spin animation

game.py

@@ -1,21 +1,45 @@
 import math as maths
 import logging
-import pygame
+import random
+import time
+
 import gameUtils
 import NoPELib
 
 import numpy as np
+import pygame
+
+def translate(value, aMin, aMax, bMin, bMax):
+    """
+    Translates `value` to go from `aMin`-`aMax` to `bMin`-`bMax`
+    Stolen from StackOverflow because we don't have time to do shit
+    properly here.
+    """
+
+    aRange = (aMax - aMin)
+    bRange = (bMax - bMin)
+    return (((value - aMin) * bRange) / aRange) + bMin
 
 def rotateRad(surface: pygame.Surface, radians: float) -> pygame.Surface:
     """
-    Rotates a surface clockwise in radians.
+    Rotates a surface clockwise in radians and re-centres it.
     """
     # Calculate the degrees
     deg = radians*(180/maths.pi)
+    # Rotate the surface re-centre
+    return rotateDeg(surface, deg)
+
+def rotateDeg(surface: pygame.Surface, degrees: float) -> pygame.Surface:
+    """
+    Rotates a surface clockwise in degrees and re-centres it.
+    """
     # Convert to CCW becaus for some reason that's what Pygame uses?
-    deg *= -1
-    # Rotate the surface
-    return pygame.transform.rotate(surface, deg)
+    degrees *= -1
+    # Rotate surface which will expand it
+    rotSurface = pygame.transform.rotate(surface, degrees)
+    # re-centre it to the orinal surface bounding box
+    rotSurface = gameUtils.centre(rotSurface, surface.size)
+    return rotSurface
 
 class Game(gameUtils.Game):
     def __init__(self, *args, **kwargs):
@@ -32,6 +56,17 @@ class Game(gameUtils.Game):
         super().__init__(*args, **kwargs)
 
         self.wheelSurf = pygame.Surface([min(self.size)]*2) # Don't ask.
+        self.wheelRotation = 0
+        # How long (in seconds) it takes for the wheel to get to full speed
+        self.WHEEL_SPIN_FADE_IN = 0.25
+        # How long (in seconds) it takes for the wheel to go back to stationary
+        self.WHEEL_SPIN_FADE_OUT = 2.5
+        # The minimum and maximum speeds of the wheel
+        self.WHEEL_SPEED_RANGE = [5, 15]
+        # Holds the decided speed of the wheel
+        self.wheelSpinSpeed = 0
+        # When the wheel started its spin animation
+        self.wheelAnimStart = 0
 
         font = pygame.font.SysFont('', 32)
 
@@ -67,7 +102,7 @@ class Game(gameUtils.Game):
             # Rotate the text surface
             textSurf = rotateRad(textSurf, rad+gap/2)
             # Blit the text surface to the wheel surface
-            self.wheelSurf.blit(gameUtils.centre(textSurf, self.wheelSurf.size), (0, 0))
+            self.wheelSurf.blit(textSurf, (0, 0))
 
 
     def onEvent(self, event):
@@ -77,14 +112,27 @@ class Game(gameUtils.Game):
         Args:
             event (pygame.Event): The event that was fired.
         """
-        pass
+        if event.type == pygame.KEYDOWN and event.key == pygame.K_SPACE:
+            self.wheelSpinSpeed = random.randint(*self.WHEEL_SPEED_RANGE)
+            self.wheelAnimStart = time.perf_counter()
     
     def update(self):
         """
         Ran once per frame, put your drawing code and any
         game logic that should be ran once per frame in here.
         """
-        self.surf.blit(gameUtils.centre(self.wheelSurf, self.size), (0, 0))
+        self.surf.blit(rotateDeg(gameUtils.centre(self.wheelSurf, self.size), self.wheelRotation), (0, 0))
+
+        animTime = time.perf_counter() - self.wheelAnimStart
+        if animTime < self.WHEEL_SPIN_FADE_IN + self.WHEEL_SPIN_FADE_OUT:
+            if animTime < self.WHEEL_SPIN_FADE_IN:
+                speed = translate(animTime, 0, self.WHEEL_SPIN_FADE_IN, 0, self.wheelSpinSpeed)
+            else:
+                speed = translate(animTime, self.WHEEL_SPIN_FADE_IN, self.WHEEL_SPIN_FADE_IN+self.WHEEL_SPIN_FADE_OUT, self.wheelSpinSpeed, 0)
+
+            self.wheelRotation += speed
+            self.wheelRotation %= 360
+            print(self.wheelRotation)
 
     def close(self):
         """