segment

config

@@ -5,6 +5,6 @@ dimensions = 420, 700
 quit = K_ESCAPE
 
 [interpolate]
-scale = C 0.0 10.0, 850.0 110.0
+scale = C 0.0 20.0, 850.0 110.0
 shift = C 0.0 0.0, 1300.0 4.7, 2000.0 6.0
 shift-2 = C 0.0 0.0, 840.0 4.2, 2000.0 8.0

scale_sieve/ScaleSieve.py

@@ -1,4 +1,4 @@
-from random import randint
+from random import randint, randrange, choice
 
 from pygame import Surface, PixelArray
 
@@ -96,13 +96,12 @@ class Sieve(Strip):
         bar_locations = []
         x = 0
         nodeset = self.get_game().interpolator.get_nodeset("scale")
-        bar_w = 3
+        self.bar_w = bar_w = 3
         self.gaps = gaps = []
         while x < nodeset[-1].x:
             bar_locations.append(x)
-            step = nodeset.get_y(x, natural=True)
-            gaps.append(step - bar_w)
-            x += step
+            gaps.append(nodeset.get_y(x, natural=True))
+            x += gaps[-1]
         surface = Surface((x, 30))
         transparent_color = (255, 0, 255)
         surface.fill(transparent_color)
@@ -158,7 +157,7 @@ class Triangles(GameChild, list):
         self.set_next_gap()
 
     def set_next_gap(self):
-        self.next_gap = randint(30, 56)
+        self.next_gap = randint(128, 512)
 
     def update(self):
         if not self or self[-1].location.top > self.next_gap:
@@ -174,10 +173,27 @@ class Triangle(Sprite):
 
     def __init__(self, parent):
         Sprite.__init__(self, parent)
-        surface = Surface((100, 20))
-        surface.fill((69, 178, 220))
+        mark = randint(64, 256)
+        sieve = self.parent.parent.sieve
+        gaps = sieve.gaps
+        start = randrange(0, len(gaps))
+        widths = [gaps[start]]
+        while sum(widths) < mark:
+            widths.append(gaps[(start + len(widths)) % len(gaps)])
+        surface = Surface((sum(widths), 20))
+        transparent_color = (255, 0, 255)
+        surface.fill(transparent_color)
+        surface.set_colorkey(transparent_color)
+        x = 0
+        margin = 6
+        for width in widths:
+            surface.fill((102, 82, 99), (x + sieve.bar_w + margin / 2, 0,
+                                         width - sieve.bar_w - margin,
+                                         surface.get_height()))
+            x += width
         self.add_frame(surface)
+        self.location.centerx = self.get_display_surface().get_rect().centerx
 
     def update(self):
-        self.move(dy=8)
+        self.move(dy=1)
         Sprite.update(self)