general update

merge water, update game loop

Throot.py

@@ -7,15 +7,15 @@ 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.constants import CONST_FPS
+from Games.Throot.constants import *
+
 
 class GameManager:
-    EVENT_ROOM_CHANGE = {'start': 0, 'main': 1, 'end': 2, 'next': -1}
-    
     def __init__(self, *rooms):
          self.rooms = rooms
          self.room_index = 0
@@ -24,13 +24,14 @@ class GameManager:
         # Set the FPS (without this call, the default fps is 30)
         thumby.display.setFPS(CONST_FPS)
 
-    def room_goto(self, index):
+    def room_goto(self, event):
+        index = event['room']
         if index < 0:
             self.room_index = min(self.room_index + 1, len(self.rooms))
         else:
             self.room_index = index
             
-        self.rooms[self.room_index].start()
+        self.rooms[self.room_index].start(event)
 
     def restart(self):
         self.room_index = 0
@@ -41,11 +42,11 @@ class GameManager:
         thumby.display.update()
         
         if event:
-            self.room_goto(self.EVENT_ROOM_CHANGE[event])
+            self.room_goto(event)
         
 
 class Room:
-    def start(self):
+    def start(self, event):
         t0 = time.ticks_ms()   # Get time (ms)
         thumby.display.fill(0) # Fill canvas to black
     
@@ -58,7 +59,9 @@ class RoomTitle(Room):
         super().update(tpf)
         
         if thumby.inputPressed():
-            return 'main'
+            return {
+                'room': ROOM_MAIN
+            }
         
         # draw title sprite
         title_text = 'press a to start'
@@ -75,65 +78,148 @@ class RoomTitle(Room):
         
 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)
+    
+    def start(self, event):
+        self.entities.clear()
+        self.current_obstacle_slice = OBSTACLE_SLICES[0]
+        self.player = Player()
+        self.player.yspeed = 10
+        self.score = 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_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.current_depth += self.diving_velocity * tpf
 
-        #print("%f (%f)" % (self.current_depth, self.current_depth % ObstacleSlice.height))
+        self.player.update_phys(tpf, self.camera)
         
-        #print("%f -> %f: %f -> %f" % (prev_depth, self.current_depth, prev_depth % ObstacleSlice.height, self.current_depth % ObstacleSlice.height))
+        self.camera.update_phys()
-        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.current_obstacle_slice, self.current_depth, prev_depth)
+        if abs(self.player.y) < abs(self.finish_depth):
+            self.entities |= update_entities(self.entities, 5, 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):
-                    print("Hit!")
+                    return {
+                        'room': ROOM_END,
+                        'score': self.score,
+                        'level': self.level + 1
+                    }
         self.entities -= to_remove
         
-        self.score = int(self.current_depth * 10)
+        self.score = int(abs(self.player.y) * 10)
+        
+        # finish level
+        if self.player.y > self.finish_depth + int(thumby.display.height * 1.5):
+            self.level += 1
+            self.start({})
 
         thumby.display.fill(0)
+        
         # 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.current_depth, prev_depth)
+        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)
-        thumby.display.update()
+        
+        
+class EndRoom(Room):
+    def __init__(self):
+        self.score = 0
+    
+    def start(self, event):
+        self.score = event['score']
+        # Used to make sure that we aren't triggering from input mean't for the game.
+        self.still_pressed = thumby.inputPressed()
+    
+    def update(self, tpf):
+        if not thumby.inputPressed():
+            self.still_pressed = False
+        elif not self.still_pressed and thumby.inputPressed():
+            return {
+                'room': ROOM_START
+            }
+        thumby.display.fill(0)
+        thumby.display.drawText("Final Score:", (thumby.display.width - 60) // 2, 1, 1)
+        thumby.display.drawText(str(self.score), (thumby.display.width - (len(str(self.score)) * 5)) // 2, 9, 1)
 
 def main():    
-    game = GameManager(RoomTitle(), GameLoop())
+    game = GameManager(RoomTitle(), GameLoop(), EndRoom())
     game.start()
 
     prev_time = 0

artrepository.py

@@ -122,13 +122,64 @@ bigdoritoobstacle = SpriteImage(
 )
 # BITMAP: width: 16, height: 16
 leaf = SpriteImage(
-    bytearray([128,1,1,1,3,3,3,71,135,15,15,31,63,255,255,255,255,254,252,248,240,240,224,224,192,193,194,196,200,144,1,63]),
+    bytearray([127,254,254,254,252,252,252,184,120,240,240,224,192,0,0,0,
+            0,1,3,7,15,15,31,31,63,62,61,59,55,111,254,192]),
     None,
     16,
     16
 )
 
-UNDERGROUND_OBSTACLES = [skull, pizza, boulder, ball, steve, mathroot, robot, dinoskull, dinojaw, dinospine, bone, bigdinohead, bigboneddiag, bigdoritoobstacle]
+annoydead = SpriteImage(
-OVERGROUND_OBSTACLES = [spaceinv, leaf]
+    bytearray([0,240,214,236,54,190,214,238,212,254,248,240,224,192,192,128,128,128,128,240,0,
+            0,63,255,254,126,126,254,255,127,127,127,127,127,255,255,127,127,255,255,31,0,
+            0,0,1,0,0,0,3,1,0,0,0,0,0,3,1,0,0,1,0,0,0]),
+    None,
+    21,
+    19
+)
 
-OBSTACLES = UNDERGROUND_OBSTACLES + OVERGROUND_OBSTACLES
+flowerpetals = SpriteImage(
+    bytearray([0,0,0,0,0,0,0,0,0,0,0,0,0,0,240,252,254,254,254,254,252,248,
+            0,0,0,0,0,252,254,255,255,255,255,255,254,254,223,63,255,255,255,255,255,255,
+            0,224,248,252,252,252,255,255,255,247,239,239,223,255,255,255,255,255,251,255,255,255]),
+    None,
+    22,
+    24
+)
+
+flowerpetalanim = SpriteImage(
+    bytearray([255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,63,191,191,7,55,231,227,251,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,127,127,191,191,191,7,115,249,253,252,254,252,255,255,255,255,255,31,79,239,231,224,238,223,223,223,191,255,254,248,243,255,255,255,255,255,255,255,255,255,127,127,127,127,127,127,127,7,241,252,254,254,254,254,253,249,255,255,255,255,1,252,254,255,255,255,255,255,254,254,223,63,255,255,255,255,255,255,15,227,249,253,253,252,255,255,255,247,239,239,223,255,255,255,255,255,251,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,31,207,247,243,251,243,247,199,255,255,255,255,255,15,231,243,249,253,253,253,253,252,254,247,231,207,255,255,255,255,255,31,199,243,251,250,248,255,255,239,223,191,255,255,255,255,255,255,255,255,255,255]),
+    None,
+    22,
+    24
+)
+
+lvl4wall = SpriteImage(
+    bytearray([255,255,254,254,252,252,248,248,240,240,224,224,192,192,192,128,128,0,0,0,0,224,240,248,248,248,248,248,248,248,248,248,248,248,248,248,248,248,248,248,248,248,248,248,248,248,248,248,240,224,0,0,0,224,240,248,248,248,248,248,248,248,248,248,248,248,248,248,248,248,248,248,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,0,0,0,0,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,0,0,0,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,127,127,63,0,0,0,0,63,127,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,127,127,31,0,0,0,63,127,127,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,63,63,31,31,15,15,7,7,3,3,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]),
+    None,
+    72,
+    30
+)
+
+ballobstaclelvl3 = SpriteImage(
+    bytearray([0,0,0,0,0,0,0,0,192,224,240,240,248,252,252,252,254,254,254,254,254,254,252,252,252,248,240,240,224,192,0,0,0,0,0,0,0,0,0,0,192,224,240,240,248,252,252,252,254,254,254,254,254,254,252,252,252,248,240,240,224,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,240,254,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,254,240,0,0,0,0,240,254,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,254,240,0,0,0,0,0,0,0,0,0,0,0,0,3,31,63,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,63,31,3,0,0,0,0,3,31,63,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,63,31,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,3,3,7,15,15,15,31,31,31,31,31,31,15,15,15,7,3,3,1,0,0,0,0,0,0,0,0,0,0,0,0,1,3,3,7,15,15,15,31,31,31,31,31,31,15,15,15,7,3,3,1,0,0,0,0,0,0,0,0,0,0,0]),
+    None,
+    72,
+    30
+)
+
+Doritoobstaclelvl5 = SpriteImage(
+    bytearray([254,254,254,254,254,252,252,252,252,252,252,252,252,252,252,252,252,252,252,252,252,252,252,252,248,248,248,248,248,248,248,248,248,248,248,248,248,240,224,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,128,192,192,224,224,240,248,248,252,252,254,254,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,127,63,31,31,15,7,3,3,3,3,1,0,0,0,0,0,0,128,128,192,224,224,240,240,248,252,252,254,254,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,127,127,63,63,31,31,31,15,15,7,7,7,3,3,1,1,1,0,0,0,0,0,0,0,0,128,128,192,224,240,248,248,252,254,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,7,3,3,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15]),
+    None,
+    72,
+    30
+)
+
+sprite_water =  SpriteImage(
+    bytearray([224,240,240,248,252,248,240,240]),
+    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 +1,6 @@
 CONST_FPS = 60
+
+ROOM_START = 0
+ROOM_MAIN = 1
+ROOM_END = 2
+ROOM_NEXT = -1

flowerpetal.raw

@@ -0,0 +1 @@
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player.py

@@ -17,6 +17,8 @@ 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)
@@ -26,14 +28,16 @@ class Player:
         self.isdecend = 1
         
         self.xspeed = 32 / CONST_FPS
-        self.yspeed = 32 / CONST_FPS
+        self.yspeed = 32
         self.accx = 1 / (CONST_FPS * 4)
         self.accaccx = self.accx
         
         self.anim = PlayerAnimation(self.x, self.y)
-        self.debugvisible = True
+        self.debugvisible = False
         
-    def update_phys(self, current_depth, prev_depth):
+    def update_phys(self, tpf, camera: Camera):
+        self.prev_x = self.xsub
+        self.prev_y = self.ysub
         inp = int(0)
         if CONST_INP_MOVE_LEFT.pressed():
             inp -= 1
@@ -58,35 +62,44 @@ class Player:
         self.xsub = max(min(xx, thumby.display.width - 1), 0)
         
         ### y movement
-        self.ysub = current_depth - (thumby.display.height / 2)
+        
+        self.ysub += self.yspeed * tpf
         
         ### pixel positions
         self.x = int(self.xsub)
         self.y = int(self.ysub)
         
         # animation
-        self.anim.update_phys(self.x, self.y, CONST_PL_SCREEN_Y)
+        self.anim.update_phys(self.x, self.y, camera)
         
-    def update_draw(self, current_depth, prev_depth):
+    def update_draw(self, camera):
         # debug draw
         if self.debugvisible:
-            pix_x = self.x
+            pix_x, pix_y = camera.relative_to_camera(self.x, self.y)
-            pix_y = int(current_depth - self.y)
+            thumby.display.setPixel(int(pix_x), int(pix_y), self.isdecend)
-            thumby.display.setPixel(pix_x, pix_y, self.isdecend)
         
         # animation
-        self.anim.update_draw(current_depth, prev_depth, self.isdecend)
+        self.anim.update_draw(camera, 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:
@@ -101,7 +114,9 @@ class PlayerAnimation:
         self.debugrandomrange = self.RANDOM_RANGE
         self.debugposrange = self.POS_RANGE
     
-    def update_phys(self, plworldx, plworldy, plscreeny):
+    def update_phys(self, plworldx, plworldy, camera):
+        
+        #print(plworldx, plworldy, plscreeny, current_depth)
         
         ### exit if player y pos less than random range
         # # debug change random range
@@ -157,19 +172,23 @@ class PlayerAnimation:
         # self.poslist.append((plworldx, plworldy))
         
         ### remove the fist item in the list if its full line is off screen
-        #if self.poslist[1][self.POS_Y] < plworldy - plscreeny:
+        if not camera.entity_in_camera(self.poslist[1][self.POS_X], self.poslist[1][self.POS_Y]):
-        #    self.poslist.pop(0)
+            self.poslist.pop(0)
             
         #print(len(self.poslist))
             
-    def update_draw(self, current_depth, prev_depth, isdecend=1):
+    def update_draw(self, camera, isdecend=1):
         ### draw line from first position to next
         
+        #print(topleft)
+        
         for i in range(len(self.poslist) - 1):
+            x1, y1 = camera.relative_to_camera(self.poslist[i][self.POS_X], self.poslist[i][self.POS_Y])
+            x2, y2 = camera.relative_to_camera(self.poslist[i + 1][self.POS_X], self.poslist[i + 1][self.POS_Y])
             thumby.display.drawLine(
-                int(self.poslist[i][self.POS_X]),
+                int(x1),
-                int(current_depth - self.poslist[i][self.POS_Y]), 
+                int(y1), 
-                int(self.poslist[i + 1][self.POS_X]),
+                int(x2),
-                int(current_depth - self.poslist[i + 1][self.POS_Y]),
+                int(y2),
                 isdecend
             )

sprites.py

@@ -1,8 +1,10 @@
-from random import randint
+import math
+from random import randrange, random
 
 import thumby
 
 from Games.Throot.map import ObstacleSlice
+from Games.Throot.player import Player, Camera
 from Games.Throot.artrepository import OBSTACLES
 
 class Entity:
@@ -35,9 +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.
 
@@ -48,15 +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.
 
@@ -73,7 +69,7 @@ class Entity:
         """
         return False
 
-    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.
         
@@ -89,19 +85,20 @@ 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
 
 
-def update_entities(current_slice: ObstacleSlice, current_depth: int, prev_depth: int):
+def update_entities(entities, difficulty: int, current_depth: int, prev_depth: int):
     """
     Checks the current game state and generates new sprites based on said state.
 
@@ -118,24 +115,32 @@ def update_entities(current_slice: ObstacleSlice, current_depth: int, prev_depth
     :return:
         A list of entities to generate this tick.
     """
+    
+    OBSTACLE_BUFFER = 10
+    
     if current_depth == prev_depth:
         # If we haven't moved, we don't need to spawn anything
         return set()
-    # Local y relative to the top of the slice
+        
-    slice_y = (current_depth) % ObstacleSlice.height
-    slice_prev_y = (prev_depth) % ObstacleSlice.height
-    if prev_depth < current_depth and slice_prev_y > slice_y:
-        slice_prev_y -= ObstacleSlice.height
-    elif current_depth < prev_depth and slice_y > slice_prev_y:
-        slice_prev_y += ObstacleSlice.height
-    min_y = min(slice_prev_y, slice_y)
-    max_y = max(slice_prev_y, slice_y)
     spawned = set()
-    for entity in current_slice.obstacle_map:
+    max_spawned = randrange(0, difficulty + 1)
-        # The position the entity should spawn at, relative to the slice top
+    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:
-        entity_y = entity[1]
+        sprite_image = OBSTACLES[randrange(0, min((difficulty + 1) * 3, len(OBSTACLES)))]
-        if entity_y >= min_y and entity_y < max_y:
+        if sprite_image.width >= thumby.display.width:
-            sprite_image = OBSTACLES[entity[2]]
+            x = 0
-            sprite = thumby.Sprite(sprite_image.width, sprite_image.height, sprite_image.image, 0, 0, 0, entity[3], entity[4])
+        else:
-            spawned.add(Obstacle(entity[0], entity_y + current_depth // ObstacleSlice.height * ObstacleSlice.height, sprite_image.width, sprite_image.height, sprite_image.collision or sprite_image.image, sprite))
+            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):
+                error = True
+                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))
     return spawned