fix of previous commit, added code comments

Author: tnibert

killthealiens.py

@@ -64,6 +64,7 @@
 changeover = 0	#for scroll change over
 ychng = 0
 
+#for more precise keyboard input
 goright = False
 goleft = False
 
@@ -130,7 +131,7 @@
 
 	ship.updatepos()
 
-	if(BEASTMODE == 3):
+	if(BEASTMODE == 3):		#if boss is out
 		if(boss.infirerange(ship) > 0):
 			if(random.randrange(0,10) == 1):
 				bullets.append(boss.fire(bulletimg, obj.LEFT))
@@ -196,7 +197,7 @@
 					deadindex = saucers.index(saucer)
 					dietest = 1
 				bullet.explode(time)
-				#saucers.remove(saucer)		#this removes te actual object from the list
+				#saucers.remove(saucer)		#this removes the actual object from the list
 				score += 5		
 
 	#this is so that we don't mess up the previous for iteration
@@ -254,9 +255,13 @@
 	healthlbl = myfont.render("Health: " + str(ship.health), 1, (255,255,0))
 	scorelbl = myfont.render("Score: " + str(score), 1, (255,255,0))
 	bosslbl = myfont.render("Boss Health: " + str(boss.health), 1, (255,255,0))	
+
+
 	#render images
+
 	screen.fill(BLACK)
 
+	#for seamless vertical scrolling
 	if(changeover == 0):
 		screen.blit(bg, (0,0), (0, 2000-obj.SCREENH-bgoffset, obj.SCREENW, 2000-bgoffset))
 	elif(changeover == 1):

obj.py

@@ -14,6 +14,7 @@
 #saucerimg = pygame.image.load("saucera.png")
 #bulletimg = pygame.image.load("bullet.png")
 
+#divide an image into frames
 def toframes(img, numframes, xstep):
 	#img to divide up, number of frames to generate, step size on x axis to split on
 	frames = []	#list of images
@@ -26,6 +27,7 @@ def toframes(img, numframes, xstep):
 
 explosion = toframes(pygame.image.load("explode.png"), 5, 120)
 
+#all sprites inherit from this class
 class MoveableObject(pygame.sprite.Sprite):
 	def __init__(self, x, y, img):
 		pygame.sprite.Sprite.__init__(self)
@@ -43,7 +45,7 @@ def updatepos(self):	#this lets us play nice with pygame
 		self.pos = (self.x, self.y)
 		self.rect.x = self.x
 		self.rect.y = self.y
-	def explode(self, time):
+	def explode(self, time):		#yes, everything can explode
 		self.timestack.append(time)
 		self.speed = 0
 		if(len(self.timestack) < 2):
@@ -115,10 +117,12 @@ def __init__(self, x, y, img, time):
 		MoveableObject.__init__(self, x, y, img)
 		self.health = 2000
 		self.inittime = time
+
 		#state indicator for boss
 		#0 is still, 1 is aimless moving
 		#2 is chase ship, 3 is fire at ship
 		self.mode = 0
+
 		#counts number of steps in a given direction
 		self.step = 0
 		self.maxstep = 4
@@ -164,6 +168,9 @@ def move(self, foe, time):
 			elif(test > 0):
 				self.mode = 0
 				self.alreadygoing = 0
+
+		#MODE 3 HAS NOT BEEN IMPLEMENTED
+
 
 		#check for screen boundaries
 		if(self.y+self.height > foe.y-60):