player animation

-all points for root animation are kept
-rendering lines will only render lines that are in the camera

Throot.py

@@ -7,12 +7,14 @@ import Games.Throot.map
 import Games.Throot.sprites
 
 from random import randrange
-from Games.Throot.artrepository import OBSTACLES
+
-from Games.Throot.player import Player
+from Games.Throot.artrepository import *
+from Games.Throot.player import Player, Camera
 from Games.Throot.map import ObstacleSlice, OBSTACLE_SLICES
-from Games.Throot.sprites import Obstacle, update_entities
+from Games.Throot.sprites import Entity, Obstacle, Collectible, update_entities
 from Games.Throot.constants import *
 
+
 class GameManager:
     def __init__(self, *rooms):
          self.rooms = rooms
@@ -44,6 +46,9 @@ class GameManager:
         
 
 class Room:
+    def __init__(self):
+        self.ind_button = 0
+    
     def start(self, event):
         t0 = time.ticks_ms()   # Get time (ms)
         thumby.display.fill(0) # Fill canvas to black
@@ -62,86 +67,190 @@ class RoomTitle(Room):
             }
         
         # draw title sprite
-        title_text = 'press a to start'
+        #thumby.display.drawSprite(sprite_title.width, sprite_title.height, sprite_title.image)
         
-        chr_len = 5
+        thumby.display.blit(sprite_title.image, 0, 0, sprite_title.width, sprite_title.height, 
-        x = int(round(thumby.display.width / 2 - (chr_len * len(title_text)) / 2))
+        -1, 0, 0)
-        y = int(round(thumby.display.height / 2 - chr_len / 2))
         
+        # title text
+        chrx = 5
+        chry = 7
         buff = 2
-        w = chr_len * len(title_text) + buff
+        
-        h = chr_len + buff
+        x = 14#int(round(thumby.display.width / 2 - (chr_len * len(title_text)) / 2))
-        thumby.display.drawFilledRectangle(x - buff, y - buff, w, h, 1)
+        y = 40 - chry - buff#int(round(thumby.display.height / 2 - chr_len / 2))
-        thumby.display.drawText(title_text, x, y, 0)
+        
+        w = chrx * 6 + buff
+        h = chry + buff
+        thumby.display.drawFilledRectangle(x - buff, y - buff, w, h * 2 + buff, 0)
+        #thumby.display.drawText('press a', x, y, 0)
+        thumby.display.drawText('start', x, y, 1)
+        
+        spr_b = thumby.Sprite(sprite_buttona1.width, sprite_buttona1.height, sprite_buttona1.image + sprite_buttona2.image, 2, 40 - 8, 
+        -1, 0, 0)
+        
+        # thumby.display.blit(sprite_buttona.image, 2, 40 - 8, sprite_buttona.width, sprite_buttona.height, 
+        # -1, 0, 0)
+        
+        self.ind_button = (self.ind_button + 1) % (2 * CONST_FPS)
+        spr_b.setFrame(self.ind_button // (2 * CONST_FPS))
+        
+        #print(self.ind_button // CONST_FPS)
+        
+        thumby.display.drawSprite(spr_b)
         
 class GameLoop(Room):
     def __init__(self):
-        self.current_depth = 0
         self.diving_velocity = 10
         self.diving_accel = 0
         self.current_obstacle_slice = OBSTACLE_SLICES[0]
         self.entities = set()
 
-        self.player = Player()
+        self.player = None
+        self.camera = None
         
         self.score = 0
+        self.level = 0
+        self.finish_depth = 0
+        
+        self.waterx = float(0)
+        
+        seed_sprite = thumby.Sprite(seed.width, seed.height, seed.image, 0, 0, 0, False, False)
+        self.seed = Entity((thumby.display.width - seed.width) // 2, 0, seed.width, seed.height, None, seed_sprite)
     
     def start(self, event):
-        self.current_depth = 0
         self.entities.clear()
+        self.entities.add(
+            self.seed
+        )
         self.current_obstacle_slice = OBSTACLE_SLICES[0]
         self.player = Player()
-        self.score = 0
+        self.player.yspeed = 10
+        self.score = 'score' in event and event['score'] or 0
+        self.level = 'level' in event and event['level'] or 0
+        
+        self.finish_depth = 100 + 5 * self.level ** 2
+        self.camera = Camera(self.player)
 
     def get_obstacle_slice(self):
         return OBSTACLE_SLICES[randrange(0, len(OBSTACLE_SLICES))]
+    
+    def draw_sky(self):
+        sky_x = 0
+        sky_y = -thumby.display.height
+        sky_width = thumby.display.width
+        sky_height = thumby.display.height
+        if self.camera.entity_in_camera(sky_x, sky_y, sky_width, sky_height):
+            sky_x, sky_y = self.camera.relative_to_camera(sky_x, sky_y)
+            thumby.display.drawFilledRectangle(int(sky_x), int(sky_y), int(sky_width), int(sky_height), 1)
+        sky_x = 0
+        sky_y = 0
+        sky_width = thumby.display.width
+        sky_height = thumby.display.height
+        if self.camera.entity_in_camera(sky_x, sky_y, sky_width, sky_height):
+            sky_x, sky_y = self.camera.relative_to_camera(sky_x, sky_y)
+            thumby.display.drawFilledRectangle(int(sky_x), int(sky_y), int(sky_width), int(sky_height), 0)
+        
+    def draw_water(self):
+        # bookwater
+        
+        # exit if depth is less than 2 screens of the finish depth
+        if self.player.y + thumby.display.height < self.finish_depth:
+            return
+        
+        self.waterx += sprite_water.width / CONST_FPS
+        if self.waterx > sprite_water.width:
+            self.waterx = 0
+            
+        # water surface.
+        for i in range(math.ceil(thumby.display.width / sprite_water.width) + 1):
+            
+            x, y = self.camera.relative_to_camera(
+                (int(self.waterx) - sprite_water.width) + i * sprite_water.width,
+                self.finish_depth
+            )
+        
+            thumby.display.blit(
+                sprite_water[0],
+                int(x), int(y), 
+                sprite_water.width, sprite_water.height,
+                0, 
+                0, 0
+            )
+            
+        # water below surface
+        x, y = self.camera.relative_to_camera(
+            0,
+            self.finish_depth
+        )
+        
+        thumby.display.drawFilledRectangle(
+                int(x), int(y) + sprite_water.height,
+                thumby.display.width, self.finish_depth + thumby.display.height * 3,
+                1,
+        )
+        
+        # win text
+        if self.player.y > self.finish_depth + (thumby.display.height // 2):
+            thumby.display.drawText('water reach!', 0, thumby.display.height // 4, 0)
+            thumby.display.drawText(f'   stage {self.level + 1}', 0, thumby.display.height // 4 + 9, 0)
 
     def update(self, tpf):
         """
         Executes one tick of the game
         """
         super().update(tpf)
-        prev_depth = self.current_depth
+
-        self.diving_velocity += self.diving_accel * tpf
+        self.player.update_phys(tpf, self.camera)
-        self.current_depth += self.diving_velocity * tpf
         
-        #print("%f (%f)" % (self.current_depth, self.current_depth % ObstacleSlice.height))
+        self.camera.update_phys()
-
-        #print("%f -> %f: %f -> %f" % (prev_depth, self.current_depth, prev_depth % ObstacleSlice.height, self.current_depth % ObstacleSlice.height))
-        if (
-            self.current_depth > prev_depth and self.current_depth % ObstacleSlice.height < prev_depth % ObstacleSlice.height
-            or self.current_depth < prev_depth and self.current_depth % ObstacleSlice.height > prev_depth % ObstacleSlice.height
-            ):
-            self.current_obstacle_slice = self.get_obstacle_slice()
-
-        self.player.update_phys(self.current_depth, prev_depth)
 
         # Generate new entities as needed
-        self.entities |= update_entities(self.entities, 5, self.current_depth, prev_depth)
+        if abs(self.player.y) < abs(self.finish_depth):
+            self.entities |= update_entities(self.entities, self.level, self.player.ysub, self.player.prev_y)
+        else:
+            self.entities.clear()
 
         # Updates the entities
         to_remove = set()
         for entity in self.entities:
-            if not entity.update(tpf, self.current_depth, prev_depth):
+            if not entity.update(tpf, self.player, self.camera) or abs(entity.y - self.player.y) > self.camera.height * 1.5:
                 to_remove.add(entity)
             elif entity.intersects_pixel(self.player.xsub, self.player.ysub):
                 if isinstance(entity, Obstacle):
                     return {
                         'room': ROOM_END,
-                        'score': self.score
+                        'score': self.score,
+                        'level': self.level + 1
                     }
+                elif isinstance(entity, Collectible):
+                    self.score += entity.score
+                    to_remove.add(entity)
         self.entities -= to_remove
         
-        self.score = int(self.current_depth * 10)
+        self.score += int(abs(self.player.ysub - self.player.prev_y) * 10)
+        
+        # finish level
+        if self.player.y > self.finish_depth + int(thumby.display.height * 1.5):
+            self.score += 20
+            self.level += 1
+            self.start({
+                'score': self.score,
+                'level': self.level
+            })
 
         thumby.display.fill(0)
+        self.draw_sky()
         # Draw the entities
         for entity in self.entities:
-            entity.render(tpf, self.current_depth, prev_depth)
+            entity.render(tpf, self.camera)
-        self.player.update_draw(self.player.y)
+        self.player.update_draw(self.camera)
 
+        self.draw_water()
+        
         thumby.display.drawText(str(self.score), thumby.display.width - (len(str(self.score)) + 2) * 5, 1, 1)
         
+        
 class EndRoom(Room):
     def __init__(self):
         self.score = 0

artrepository.py

@@ -2,6 +2,27 @@ from collections import namedtuple
 
 SpriteImage = namedtuple("SpriteImage", ["image", "collision", "width", "height"])
 
+seed = SpriteImage(
+    bytearray([8,20,46,46,62,62,46,62,46,12,0]),
+    None,
+    11,
+    7
+)
+
+collectibleover = SpriteImage(
+    bytearray([9,4,6,9]),
+    None,
+    4,
+    4
+)
+
+collectibleunder = SpriteImage(
+    bytearray([6,11,9,6]),
+    None,
+    4,
+    4
+)
+
 # BITMAP: width: 8, height: 8
 skull = SpriteImage(
     bytearray([0,28,102,126,38,30,28,0]),
@@ -175,4 +196,32 @@ Doritoobstaclelvl5 = SpriteImage(
     30
 )
 
+sprite_water =  SpriteImage(
+    bytearray([224,240,240,248,252,248,240,240]),
+    None,
+    8,
+    8
+)
+
+sprite_title = SpriteImage(
+    bytearray([32,128,40,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,0,0,0,0,0,0,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,160,128,32,0,72,0,192,96,24,8,4,6,2,2,2,2,2,4,12,24,112,192,0,0,0,3,3,3,3,3,255,255,255,3,251,251,251,3,3,251,251,251,3,251,251,155,155,155,155,99,99,0,248,248,24,24,24,251,251,3,251,251,27,27,27,251,251,3,255,255,255,3,3,3,0,1,0,31,48,96,64,64,64,98,50,30,0,0,192,96,48,16,24,15,12,24,48,96,192,0,0,0,255,255,255,0,255,255,255,7,7,255,255,255,0,255,255,1,1,1,3,255,255,0,255,255,128,128,128,255,255,0,255,255,128,128,128,255,255,0,255,255,255,0,0,0,0,192,64,96,32,32,69,192,10,0,4,0,0,127,129,0,0,0,0,0,0,0,96,48,29,7,0,0,63,255,255,192,149,85,85,84,84,85,85,85,84,85,85,84,84,84,84,85,85,84,85,85,85,85,85,85,85,84,85,85,85,85,85,85,21,192,255,255,127,0,0,0,3,7,4,132,128,192,96,29,70,0,0,0,0,0,1,6,12,8,24,16,248,140,4,4,108,72,120,48,0,128,193,255,255,127,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,252,254,255,183,99,65,64,64,96,48,24,30,99,65,64,194,128,133,0,2,0,128,96,24,12,4,2,2,1,1]),
+    None,
+    72,
+    40
+)
+
+sprite_buttona1 =  SpriteImage(
+    bytearray([60,98,221,203,203,221,98,60]),
+    None,
+    8,
+    8
+)
+
+sprite_buttona2 =  SpriteImage(
+    bytearray([56,68,186,150,150,186,68,56]),
+    None,
+    8,
+    8
+)
+
 OBSTACLES = [skull, pizza, boulder, ball, steve, mathroot, leaf, robot, dinoskull, dinojaw, dinospine, bone, bigdinohead, bigboneddiag, bigdoritoobstacle, spaceinv,annoydead,lvl4wall,ballobstaclelvl3,Doritoobstaclelvl5]

constants.py

@@ -1 +1,7 @@
-CONST_FPS = 60
+CONST_FPS = 60
+
+ROOM_START = 0
+ROOM_MAIN = 1
+ROOM_END = 2
+ROOM_NEXT = -1
+

player.py

@@ -2,178 +2,224 @@ import time
 import thumby
 import math
 import random
+from collections import namedtuple
 
 from Games.Throot.constants import CONST_FPS
 
 # didplay width 72
 # display height 40
 
-# constants
+class Input:
-CONST_PL_SCREEN_Y =  int((0.5) * thumby.display.height)
+    def move_right(self):
+        return (
+            thumby.buttonA.pressed() or
+            thumby.buttonR.pressed()
+        )
+        
+    def move_left(self):
+        return thumby.buttonL.pressed()
+        
+inp = Input()
 
-CONST_INP_MOVE_LEFT = thumby.buttonL
+### classes
-CONST_INP_MOVE_RIGHT = thumby.buttonA
-
-# classes
 class Player:
     def __init__(self):
+        self.prev_x = 0
+        self.prev_y = 0
         self.xsub = float(thumby.display.width / 2)
         self.ysub = float(0)
         self.x = int(self.xsub)
         self.y = int(self.ysub)
         
-        self.movespeed = 32 / CONST_FPS
         self.isdecend = 1
         
-        self.xspeed = 32 / CONST_FPS
+        self.input_x = float(0)
-        self.yspeed = 32 / CONST_FPS
-        self.accx = 1 / (CONST_FPS * 4)
-        self.accaccx = self.accx
         
-        self.anim = PlayerAnimation(self.x, self.y)
+        # constants
-        self.debugvisible = True
+        self.speed_x_start = 32
+        self.speed_x_max = 200
+        self.acc_x_start = 64
+        self.jerk_x = 128
         
-    def update_phys(self, current_depth, prev_depth):
+        self.speed_x = self.speed_x_start
-        inp = int(0)
+        self.acc_x = self.acc_x_start
-        if CONST_INP_MOVE_LEFT.pressed():
-            inp -= 1
-        if CONST_INP_MOVE_RIGHT.pressed():
-            inp += 1
         
-        # debug visible
+        # y speed is constant
-        if thumby.buttonU.pressed():
+        self.speed_y = 16
-            self.debugvisible = not self.debugvisible
+        
+        self.anim = PlayerAnimation(self)
+        
+        
+    def update_phys(self, tpf, camera: Camera):
+        # prevoius sub pixel position
+        self.prev_x = self.xsub
+        self.prev_y = self.ysub
         
         ### x movement
-        self.xspeed += self.accx
-        self.accx += self.accaccx
         
-        if (inp == 0) and (self.xspeed > self.movespeed):
+        # x input
-            self.xspeed = self.movespeed
+        if inp.move_left() and (not inp.move_right()):
-            self.accx = self.accaccx
+            self.input_x = -1
+            
+        if inp.move_right() and (not inp.move_left()):
+            self.input_x = 1
+            
+        if (not inp.move_left()) and (not inp.move_right()):
+            self.input_x = 0
         
-        xx = self.xsub + inp * self.xspeed
+        # acceleration and jerk
+        self.speed_x += self.acc_x * tpf
+        self.acc_x += self.jerk_x * tpf
         
-        # clamp to screen
+        # limit speed
-        self.xsub = max(min(xx, thumby.display.width - 1), 0)
+        self.speed_x = min(self.speed_x_max, self.speed_x)
+        
+        # reset speed and acceleration if no input
+        if (self.input_x == 0) and (self.speed_x != self.speed_x_start):
+            self.speed_x = self.speed_x_start
+            self.acc_x = self.acc_x_start
+            
+        # set x sub pixel position
+        self.xsub += self.speed_x * tpf * self.input_x
         
         ### y movement
-        self.ysub = current_depth - (thumby.display.height / 2)
+        
+        # set y sub pixel position
+        self.ysub += self.speed_y * tpf
+        
+        ### stay in world bounds
+        self.xsub = max(min(self.xsub, thumby.display.width - 1), 0)
         
         ### pixel positions
         self.x = int(self.xsub)
         self.y = int(self.ysub)
         
-        # animation
+        ### animation physics
-        self.anim.update_phys(self.x, self.y, CONST_PL_SCREEN_Y, current_depth)
+        self.anim.update_phys(camera)
         
-    def update_draw(self, plworldy):
+    def update_draw(self, camera):
-        # debug draw
+        ### animation render
-        if self.debugvisible:
+        self.anim.update_draw(camera, self.isdecend)
-            pix_x = self.x
-            pix_y = int(self.y - plworldy + 20)
-            thumby.display.setPixel(pix_x, pix_y, self.isdecend)
-        
-        # animation
-        self.anim.update_draw(plworldy - 20, self.isdecend)
         
 
 class Camera:
     def __init__(self, target):
         self.x = int(0)
         self.y = int(0)
+        self.width = thumby.display.width
+        self.height = thumby.display.height
+        self.offset = -self.height / 2
         self.target = target
     
-    def update_phys(self, plscreeny):
+    def entity_in_camera(self, ent_x, ent_y, ent_width = 0, ent_height = 0) -> bool:
+        return ent_x + ent_width >= self.x and ent_y + ent_height >= self.y and ent_x < self.x + self.width and ent_y < self.y + self.height
+    
+    def relative_to_camera(self, global_x, global_y):
+        return (global_x - self.x, global_y - self.y)
+    
+    def update_phys(self):
         # position player
-        self.y = self.target.y - plscreeny
+        self.y = self.target.y + self.offset
-
 
 class PlayerAnimation:
-    # width and height of range bounding box
+    MAX_ROOT_OFFSET = int(4)
-    RANDOM_RANGE = int(7)
-    POS_RANGE = int(3)
-    POS_X = int(0)
-    POS_Y = int(1)
     
-    def __init__(self, plworldx, plworldy):
+    MAX_GROW_DISTANCE = int(6)#int(3)
-        self.poslist = [(plworldx, plworldy)]
+    MIN_GROW_DISTANCE = int(2)
-        self.debugrandomrange = self.RANDOM_RANGE
-        self.debugposrange = self.POS_RANGE
     
-    def update_phys(self, plworldx, plworldy, plscreeny, current_depth):
+    Point = namedtuple("Point", ["x", "y"])
+
+    def __init__(self, player):
+        self.player = player
         
-        #print(plworldx, plworldy, plscreeny, current_depth)
+        self.root_offset = self.MAX_ROOT_OFFSET
+        self.grow_distance = self.MAX_GROW_DISTANCE
         
-        ### exit if player y pos less than random range
+        self.points = []
-        # # debug change random range
+        self.add_point()
-        # inp = int(0)
+        
-        # if thumby.buttonD.justPressed():
+        self.debug_visible = False
-        #     inp -= 1
+        self.debug_exact = True
-        # if thumby.buttonU.justPressed():
+        
-        #     inp += 1
+    def add_point(self):
+        self.points.append(self.Point(self.player.x, self.player.y))
+    
+    def update_phys(self, camera):
+        # debug visible
+        if thumby.buttonB.justPressed():
+            self.debug_visible = not self.debug_visible
             
-        # if inp != 0:
+        # debug exact
-        #     self.debugposrange = max(self.debugposrange + inp * 2, 1)
+        if thumby.buttonU.justPressed():
-        #     print('debugposrange: ', self.debugposrange)
+            self.debug_exact = not self.debug_exact
             
-        # # if plworldy < self.poslist[-1][self.POS_Y] + random.randint(1, self.debugposrange):
+        # exit if distance from player to last root point is less than gorw distance
-        # #     return
+        dist_sqr = (
-        
+            (self.player.x - self.points[-1].x) ** 2 +
-        # if plworldy < self.poslist[-1][self.POS_Y] + self.debugposrange:
+            (self.player.y - self.points[-1].y) ** 2
-        #     return
-            
-        if plworldy < self.poslist[-1][self.POS_Y] + self.POS_RANGE:
-            return
-        
-        ### get new position
-        rad = self.RANDOM_RANGE // 2
-        
-        # # debug change random range
-        # inp = int(0)
-        # if thumby.buttonB.justPressed():
-        #     inp -= 1
-        # if thumby.buttonA.justPressed():
-        #     inp += 1
-            
-        # if inp != 0:
-        #     self.debugrandomrange = max(self.debugrandomrange + inp * 2, 1)
-        #     print('debugrandomrange:', self.debugrandomrange)
-            
-        # rad = max(self.debugrandomrange // 2, 1)
-        
-        # vector int
-        # self.poslist.append((plworldx + random.randrange(-rad, rad), 
-        # plworldy + random.randrange(-rad, rad)))
-        
-        # move last pos
-        self.poslist[-1] = (
-            plworldx + random.randrange(-rad, rad), 
-            plworldy + random.randrange(-rad, rad)
         )
         
-        # new pos is perfectly on player
+        if dist_sqr < self.grow_distance ** 2:
-        self.poslist.append((plworldx, plworldy))
+            return
         
-        # # debug
+        # set new grow distance
-        # self.poslist.append((plworldx, plworldy))
+        self.grow_distance = random.randint(self.MIN_GROW_DISTANCE, self.MAX_GROW_DISTANCE)
         
-        ### remove the fist item in the list if its full line is off screen
+        # offset last root point to look random
-        if self.poslist[1][self.POS_Y] < plworldy - plscreeny:
+        self.points[-1] = self.Point(
-            self.poslist.pop(0)
+            self.points[-1].x + random.randrange(-self.root_offset, self.root_offset), 
+            self.points[-1].y + random.randrange(-self.root_offset, self.root_offset)
+        )
+        
+        # new root point created exactly on player
+        self.add_point()
+        
+        # points are not removed so the camera can pan back up
+        # # remove points in list that would render lines off the camera
+        # for point in self.points[1:]:
+        #     if camera.entity_in_camera(point.x, point.y):
+        #         break
             
-        #print(len(self.poslist))
+        #     self.points.pop(0)
             
-    def update_draw(self, topleft, prev_depth, isdecend=1):
+    def update_draw(self, camera, isdecend=1):
-        ### draw line from first position to next
+        # debug render
+        if self.debug_visible:
+            pix_x, pix_y = camera.relative_to_camera(self.player.x, self.player.y)
+            thumby.display.setPixel(int(pix_x), int(pix_y), isdecend)
+            return
         
-        #print(topleft)
+        # draw line from last point to player
-        
+        if self.debug_exact:
-        for i in range(len(self.poslist) - 1):
+            x1, y1 = camera.relative_to_camera(self.player.x, self.player.y)
+            x2, y2 = camera.relative_to_camera(self.points[-1].x, self.points[-1].y)
             thumby.display.drawLine(
-                int(self.poslist[i][self.POS_X]),
+                int(x1),
-                int(self.poslist[i][self.POS_Y] - topleft), 
+                int(y1), 
-                int(self.poslist[i + 1][self.POS_X]),
+                int(x2),
-                int(self.poslist[i + 1][self.POS_Y] - topleft),
+                int(y2),
+                isdecend
+            )
+
+        # draw line from last point to previous
+        point_off_camera_count = 2
+        point_prev = self.points[-1]
+        for point in self.points[-2::-1]:
+            
+            # break if entire line is off camera
+            if not camera.entity_in_camera(point.x, point.y):
+                point_off_camera_count -= 1
+                if point_off_camera_count <= 0:
+                    break
+            
+            x1, y1 = camera.relative_to_camera(point_prev.x, point_prev.y)
+            x2, y2 = camera.relative_to_camera(point.x, point.y)
+            point_prev = point
+            
+            thumby.display.drawLine(
+                int(x1),
+                int(y1), 
+                int(x2),
+                int(y2),
                 isdecend
             )

sprites.py

@@ -4,7 +4,8 @@ from random import randrange, random
 import thumby
 
 from Games.Throot.map import ObstacleSlice
-from Games.Throot.artrepository import OBSTACLES
+from Games.Throot.player import Player, Camera
+from Games.Throot.artrepository import *
 
 class Entity:
     """
@@ -36,9 +37,9 @@ class Entity:
             return False
         rel_x = int(loc_x - self.x)
         rel_y = int(loc_y - self.y)
-        return bool((self.collision[rel_x] >> (self.height - rel_y)) & 1)
+        return bool((self.collision[rel_x] >> (rel_y)) & 1)
 
-    def can_render(self, current_depth: int) -> bool:
+    def can_render(self, camera: Camera) -> bool:
         """
         Checks to see if this sprite is within the game screen.
 
@@ -49,15 +50,9 @@ class Entity:
         :return:
             True if the sprite shows up on screen in any capacity, false otherwise.
         """
-        if self.x < -self.width or self.x >= thumby.display.width:
+        return camera.entity_in_camera(self.x, self.y, self.width, self.height)
-            return False
-        max = current_depth
-        min = max - thumby.display.height
-        if self.y < (min - self.height) or self.y > max:
-            return False
-        return True
 
-    def update(self, tpf: float, current_depth: int, prev_depth: int) -> bool:
+    def update(self, tpf: float, player: Player, camera: Camera) -> bool:
         """
         Updates the state of the entity based on the game state.
 
@@ -72,9 +67,9 @@ class Entity:
             True if the game should keep this entity, false if the game should drop
             this entity from memory.
         """
-        return False
+        return True
 
-    def render(self, tpf: float, current_depth: int, prev_depth: int) -> bool:
+    def render(self, tpf: float, camera: Camera) -> bool:
         """
         Sets the position of the sprite and draws it.
         
@@ -90,16 +85,25 @@ class Entity:
             should be hidden.
         """
         if self.sprite:
-            self.sprite.y = int(self.y - current_depth + thumby.display.height)
+            coordinates = camera.relative_to_camera(self.x, self.y)
-            self.sprite.x = int(self.x)
+            self.sprite.x = coordinates[0]
-            if self.can_render(current_depth):
+            self.sprite.y = coordinates[1]
+            if self.can_render(camera):
                 thumby.display.drawSprite(self.sprite)
                 return True
         return False
 
 class Obstacle(Entity):    
-    def update(self, tpf: float, current_depth: int, prev_depth: int) -> bool:
+    def update(self, tpf: float, player: Player, camera: Camera) -> bool:
-        return self.can_render(current_depth)
+        return True
+
+class Collectible(Entity):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.score = 'score' in kwargs and kwargs['score'] or 10
+        
+    def update(self, tpf: float, player: Player, camera: Camera) -> bool:
+        return True
 
 
 def update_entities(entities, difficulty: int, current_depth: int, prev_depth: int):
@@ -127,14 +131,26 @@ def update_entities(entities, difficulty: int, current_depth: int, prev_depth: i
         return set()
         
     spawned = set()
-    max_spawned = 1#randrange(0, difficulty + 1)
+    max_spawned = randrange(0, difficulty + 1)
     while len(spawned) < max_spawned and random() < (2 * math.pow(difficulty + 0.01, 2)) / (3 * math.pow(difficulty + 0.01, 2) + 20 * (difficulty + 0.01)) + 0.05:
-        sprite_image = OBSTACLES[randrange(0, min((difficulty + 1) * 3, len(OBSTACLES)))]
+        if random() < 0.2:
+            Clazz = Collectible
+            if current_depth >= 0:
+                sprite_image = collectibleunder
+            else:
+                sprite_image = collectibleover
+        else:
+            Clazz = Obstacle
+            sprite_image = OBSTACLES[randrange(0, min((difficulty + 1) * 3, len(OBSTACLES)))]
         if sprite_image.width >= thumby.display.width:
             x = 0
         else:
             x = randrange(0, thumby.display.width - sprite_image.width)
         y = current_depth
+        if current_depth > prev_depth:
+            y += thumby.display.height // 2
+        elif current_depth < prev_depth:
+            y -= thumby.display.height // 2 + sprite_image.height
         error = False
         for entity in entities | spawned:
             if x > (entity.x - OBSTACLE_BUFFER) and x <= (entity.x + entity.width + OBSTACLE_BUFFER) and y > (entity.y - OBSTACLE_BUFFER) and y <= (entity.y + entity.height + OBSTACLE_BUFFER):
@@ -142,5 +158,5 @@ def update_entities(entities, difficulty: int, current_depth: int, prev_depth: i
                 break
         if not error:
             sprite = thumby.Sprite(sprite_image.width, sprite_image.height, sprite_image.image, 0, 0, 0, False, False)
-            spawned.add(Obstacle(x, y, sprite_image.width, sprite_image.height, sprite_image.collision or sprite_image.image, sprite))
+            spawned.add(Clazz(x, y, sprite_image.width, sprite_image.height, sprite_image.collision or sprite_image.image, sprite))
     return spawned