2 files changed, 211 insertions, 4 deletions

diff --git a/samples/99_genre_platformer/the_little_probe/app/main.rb b/samples/99_genre_platformer/the_little_probe/app/main.rb
index 8fcf279..9d43ce6 100644
--- a/samples/99_genre_platformer/the_little_probe/app/main.rb
+++ b/samples/99_genre_platformer/the_little_probe/app/main.rb
@@ -394,6 +394,7 @@ class FallingCircle
   end
 
   def load_lines file
+    return unless state.snaps
     data = gtk.read_file(file) || ""
     data.each_line
         .reject { |l| l.strip.length == 0 }
@@ -452,10 +453,10 @@ class FallingCircle
     results[:point] = { x: x, y: y }
     results[:rect] = { x: x - radius, y: y - radius, w: radius * 2, h: radius * 2 }
     results[:trajectory] = trajectory(results)
-    results[:impacts] = terrain.find_all { |t| line_near_rect? results[:rect], t }.map do |t|
+    results[:impacts] = terrain.find_all { |t| t && (line_near_rect? results[:rect], t) }.map do |t|
       {
         terrain: t,
-        point: geometry.line_intersect(results[:trajectory], t),
+        point: geometry.line_intersect(results[:trajectory], t, replace_infinity: 1000),
         type: :terrain
       }
     end.reject { |t| !point_within_line? t[:point], t[:terrain] }
@@ -463,10 +464,10 @@ class FallingCircle
     results[:impacts] += lava.find_all { |t| line_near_rect? results[:rect], t }.map do |t|
       {
         terrain: t,
-        point: geometry.line_intersect(results[:trajectory], t),
+        point: geometry.line_intersect(results[:trajectory], t, replace_infinity: 1000),
         type: :lava
       }
-    end.reject { |t| !point_within_line? t[:point], t[:terrain] }
+    end.reject { |t| !t || (!point_within_line? t[:point], t[:terrain]) }
 
     results
   end
@@ -479,6 +480,7 @@ class FallingCircle
   end
 
   def calc_terrains_to_monitor
+    return unless circle.impacts
     circle.impact = nil
     circle.impacts.each do |i|
       circle.terrains_to_monitor[i[:terrain]] ||= {
diff --git a/samples/99_genre_platformer/the_little_probe/bug-replay.txt b/samples/99_genre_platformer/the_little_probe/bug-replay.txt
new file mode 100644
index 0000000..378d3c3
--- /dev/null
+++ b/samples/99_genre_platformer/the_little_probe/bug-replay.txt
@@ -0,0 +1,205 @@
+replay_version 2.0
+stopped_at 2085
+seed 100
+recorded_at 2021-11-20 11:34:07 -0600
+[:mouse_button_up, 1, 0, 1, 1, 1]
+[:mouse_move, 803, 93, 2, 2, 31]
+[:mouse_move, 811, 93, 2, 3, 32]
+[:key_down_raw, 1073741903, 0, 2, 4, 123]
+[:key_down_raw, 1073741903, 0, 2, 5, 137]
+[:key_down_raw, 1073741903, 0, 2, 6, 139]
+[:key_down_raw, 1073741903, 0, 2, 7, 141]
+[:key_down_raw, 1073741903, 0, 2, 8, 143]
+[:key_down_raw, 1073741903, 0, 2, 9, 145]
+[:key_down_raw, 1073741903, 0, 2, 10, 147]
+[:key_down_raw, 1073741903, 0, 2, 11, 149]
+[:key_up_raw, 1073741903, 0, 2, 12, 150]
+[:key_down_raw, 32, 0, 2, 13, 171]
+[:key_down_raw, 32, 0, 2, 14, 186]
+[:key_down_raw, 32, 0, 2, 15, 189]
+[:key_down_raw, 32, 0, 2, 16, 190]
+[:key_down_raw, 32, 0, 2, 17, 192]
+[:key_down_raw, 32, 0, 2, 18, 194]
+[:key_down_raw, 32, 0, 2, 19, 196]
+[:key_down_raw, 32, 0, 2, 20, 198]
+[:key_down_raw, 32, 0, 2, 21, 200]
+[:key_down_raw, 32, 0, 2, 22, 202]
+[:key_down_raw, 32, 0, 2, 23, 204]
+[:key_down_raw, 32, 0, 2, 24, 206]
+[:key_down_raw, 32, 0, 2, 25, 208]
+[:key_down_raw, 32, 0, 2, 26, 210]
+[:key_down_raw, 32, 0, 2, 27, 212]
+[:key_down_raw, 32, 0, 2, 28, 214]
+[:key_down_raw, 32, 0, 2, 29, 216]
+[:key_down_raw, 32, 0, 2, 30, 218]
+[:key_down_raw, 32, 0, 2, 31, 221]
+[:key_down_raw, 32, 0, 2, 32, 222]
+[:key_down_raw, 32, 0, 2, 33, 224]
+[:key_down_raw, 32, 0, 2, 34, 227]
+[:key_down_raw, 32, 0, 2, 35, 229]
+[:key_down_raw, 32, 0, 2, 36, 231]
+[:key_down_raw, 32, 0, 2, 37, 233]
+[:key_down_raw, 32, 0, 2, 38, 235]
+[:key_down_raw, 32, 0, 2, 39, 237]
+[:key_down_raw, 32, 0, 2, 40, 239]
+[:key_down_raw, 32, 0, 2, 41, 241]
+[:key_down_raw, 32, 0, 2, 42, 243]
+[:key_down_raw, 32, 0, 2, 43, 245]
+[:key_down_raw, 32, 0, 2, 44, 247]
+[:key_down_raw, 32, 0, 2, 45, 249]
+[:key_down_raw, 32, 0, 2, 46, 251]
+[:key_down_raw, 32, 0, 2, 47, 253]
+[:key_down_raw, 32, 0, 2, 48, 255]
+[:key_down_raw, 32, 0, 2, 49, 257]
+[:key_down_raw, 32, 0, 2, 50, 259]
+[:key_down_raw, 32, 0, 2, 51, 261]
+[:key_down_raw, 32, 0, 2, 52, 263]
+[:key_down_raw, 32, 0, 2, 53, 265]
+[:key_down_raw, 32, 0, 2, 54, 267]
+[:key_down_raw, 32, 0, 2, 55, 269]
+[:key_down_raw, 32, 0, 2, 56, 271]
+[:key_down_raw, 1073741903, 0, 2, 57, 272]
+[:key_up_raw, 1073741903, 0, 2, 58, 284]
+[:key_up_raw, 32, 0, 2, 59, 350]
+[:key_down_raw, 1073741904, 0, 2, 60, 611]
+[:key_down_raw, 1073741904, 0, 2, 61, 626]
+[:key_down_raw, 1073741904, 0, 2, 62, 628]
+[:key_down_raw, 1073741904, 0, 2, 63, 630]
+[:key_down_raw, 1073741904, 0, 2, 64, 632]
+[:key_down_raw, 1073741904, 0, 2, 65, 634]
+[:key_down_raw, 1073741904, 0, 2, 66, 636]
+[:key_up_raw, 1073741904, 0, 2, 67, 636]
+[:key_down_raw, 32, 0, 2, 68, 640]
+[:key_down_raw, 32, 0, 2, 69, 655]
+[:key_down_raw, 32, 0, 2, 70, 657]
+[:key_down_raw, 32, 0, 2, 71, 659]
+[:key_down_raw, 32, 0, 2, 72, 661]
+[:key_down_raw, 32, 0, 2, 73, 663]
+[:key_down_raw, 32, 0, 2, 74, 665]
+[:key_down_raw, 1073741903, 0, 2, 75, 666]
+[:key_up_raw, 1073741903, 0, 2, 76, 672]
+[:key_down_raw, 1073741903, 0, 2, 77, 703]
+[:key_down_raw, 1073741903, 0, 2, 78, 717]
+[:key_up_raw, 1073741903, 0, 2, 79, 717]
+[:key_down_raw, 1073741903, 0, 2, 80, 736]
+[:key_up_raw, 1073741903, 0, 2, 81, 741]
+[:key_up_raw, 32, 0, 2, 82, 798]
+[:key_down_raw, 1073741903, 0, 2, 83, 861]
+[:key_down_raw, 1073741903, 0, 2, 84, 876]
+[:key_down_raw, 1073741903, 0, 2, 85, 878]
+[:key_down_raw, 1073741903, 0, 2, 86, 880]
+[:key_down_raw, 1073741903, 0, 2, 87, 882]
+[:key_down_raw, 1073741903, 0, 2, 88, 884]
+[:key_up_raw, 1073741903, 0, 2, 89, 886]
+[:key_down_raw, 1073741903, 0, 2, 90, 1063]
+[:key_down_raw, 1073741903, 0, 2, 91, 1079]
+[:key_down_raw, 1073741903, 0, 2, 92, 1081]
+[:key_down_raw, 1073741903, 0, 2, 93, 1083]
+[:key_down_raw, 1073741903, 0, 2, 94, 1085]
+[:key_down_raw, 1073741903, 0, 2, 95, 1086]
+[:key_down_raw, 1073741903, 0, 2, 96, 1088]
+[:key_down_raw, 1073741903, 0, 2, 97, 1090]
+[:key_down_raw, 1073741903, 0, 2, 98, 1092]
+[:key_down_raw, 1073741903, 0, 2, 99, 1094]
+[:key_down_raw, 1073741903, 0, 2, 100, 1096]
+[:key_down_raw, 1073741903, 0, 2, 101, 1098]
+[:key_down_raw, 1073741903, 0, 2, 102, 1100]
+[:key_down_raw, 1073741903, 0, 2, 103, 1102]
+[:key_down_raw, 1073741903, 0, 2, 104, 1104]
+[:key_down_raw, 1073741903, 0, 2, 105, 1106]
+[:key_down_raw, 1073741903, 0, 2, 106, 1109]
+[:key_down_raw, 1073741903, 0, 2, 107, 1111]
+[:key_down_raw, 1073741903, 0, 2, 108, 1113]
+[:key_down_raw, 1073741903, 0, 2, 109, 1115]
+[:key_down_raw, 1073741903, 0, 2, 110, 1117]
+[:key_down_raw, 1073741903, 0, 2, 111, 1119]
+[:key_down_raw, 1073741903, 0, 2, 112, 1121]
+[:key_down_raw, 1073741903, 0, 2, 113, 1122]
+[:key_down_raw, 1073741903, 0, 2, 114, 1125]
+[:key_down_raw, 1073741903, 0, 2, 115, 1127]
+[:key_down_raw, 1073741903, 0, 2, 116, 1128]
+[:key_down_raw, 1073741903, 0, 2, 117, 1131]
+[:key_down_raw, 1073741903, 0, 2, 118, 1132]
+[:key_down_raw, 1073741903, 0, 2, 119, 1134]
+[:key_down_raw, 1073741903, 0, 2, 120, 1136]
+[:key_down_raw, 1073741903, 0, 2, 121, 1138]
+[:key_down_raw, 1073741903, 0, 2, 122, 1140]
+[:key_down_raw, 1073741903, 0, 2, 123, 1142]
+[:key_up_raw, 1073741903, 0, 2, 124, 1142]
+[:key_down_raw, 32, 0, 2, 125, 1208]
+[:key_down_raw, 32, 0, 2, 126, 1223]
+[:key_down_raw, 32, 0, 2, 127, 1225]
+[:key_down_raw, 1073741903, 0, 2, 128, 1226]
+[:key_up_raw, 1073741903, 0, 2, 129, 1236]
+[:key_down_raw, 1073741904, 0, 2, 130, 1253]
+[:key_up_raw, 1073741904, 0, 2, 131, 1266]
+[:key_down_raw, 1073741903, 0, 2, 132, 1324]
+[:key_up_raw, 1073741903, 0, 2, 133, 1330]
+[:key_down_raw, 1073741903, 0, 2, 134, 1414]
+[:key_up_raw, 1073741903, 0, 2, 135, 1417]
+[:key_up_raw, 32, 0, 2, 136, 1441]
+[:mouse_move, 812, 92, 2, 137, 1607]
+[:mouse_move, 818, 92, 2, 138, 1608]
+[:mouse_move, 818, 91, 2, 139, 1614]
+[:mouse_move, 818, 90, 2, 140, 1622]
+[:mouse_move, 813, 89, 2, 141, 1623]
+[:mouse_move, 801, 86, 2, 142, 1624]
+[:mouse_move, 786, 83, 2, 143, 1625]
+[:mouse_move, 770, 82, 2, 144, 1626]
+[:mouse_move, 756, 82, 2, 145, 1627]
+[:mouse_move, 745, 82, 2, 146, 1628]
+[:mouse_move, 738, 82, 2, 147, 1629]
+[:mouse_move, 731, 83, 2, 148, 1630]
+[:mouse_move, 724, 84, 2, 149, 1631]
+[:mouse_move, 712, 85, 2, 150, 1632]
+[:mouse_move, 707, 87, 2, 151, 1633]
+[:mouse_move, 702, 89, 2, 152, 1634]
+[:mouse_move, 699, 95, 2, 153, 1635]
+[:mouse_move, 693, 102, 2, 154, 1636]
+[:mouse_move, 687, 110, 2, 155, 1637]
+[:mouse_move, 680, 118, 2, 156, 1638]
+[:mouse_move, 671, 125, 2, 157, 1639]
+[:mouse_move, 659, 132, 2, 158, 1640]
+[:mouse_move, 645, 142, 2, 159, 1641]
+[:mouse_move, 632, 153, 2, 160, 1642]
+[:mouse_move, 616, 164, 2, 161, 1643]
+[:mouse_move, 583, 184, 2, 162, 1644]
+[:mouse_move, 554, 198, 2, 163, 1645]
+[:mouse_move, 519, 212, 2, 164, 1646]
+[:mouse_move, 480, 224, 2, 165, 1647]
+[:mouse_move, 445, 234, 2, 166, 1648]
+[:mouse_move, 414, 246, 2, 167, 1649]
+[:mouse_move, 393, 265, 2, 168, 1650]
+[:mouse_move, 388, 276, 2, 169, 1651]
+[:mouse_move, 386, 272, 2, 170, 1665]
+[:mouse_move, 380, 272, 2, 171, 1666]
+[:mouse_move, 366, 272, 2, 172, 1667]
+[:mouse_move, 336, 266, 2, 173, 1668]
+[:mouse_move, 313, 262, 2, 174, 1669]
+[:mouse_move, 294, 258, 2, 175, 1670]
+[:mouse_move, 278, 255, 2, 176, 1671]
+[:mouse_move, 268, 254, 2, 177, 1672]
+[:mouse_move, 263, 253, 2, 178, 1673]
+[:mouse_move, 261, 252, 2, 179, 1674]
+[:mouse_move, 260, 251, 2, 180, 1675]
+[:mouse_move, 258, 250, 2, 181, 1676]
+[:mouse_move, 256, 249, 2, 182, 1677]
+[:mouse_move, 252, 249, 2, 183, 1678]
+[:mouse_move, 251, 249, 2, 184, 1679]
+[:mouse_move, 248, 249, 2, 185, 1680]
+[:mouse_move, 246, 248, 2, 186, 1681]
+[:mouse_move, 242, 247, 2, 187, 1682]
+[:mouse_move, 234, 247, 2, 188, 1683]
+[:mouse_move, 231, 247, 2, 189, 1684]
+[:mouse_move, 230, 247, 2, 190, 1685]
+[:mouse_move, 230, 246, 2, 191, 1688]
+[:mouse_move, 229, 246, 2, 192, 1691]
+[:mouse_move, 228, 246, 2, 193, 1692]
+[:mouse_move, 227, 246, 2, 194, 1702]
+[:mouse_move, 228, 246, 2, 195, 1834]
+[:mouse_move, 229, 246, 2, 196, 1898]
+[:mouse_move, 229, 245, 2, 197, 1968]
+[:key_down_raw, 96, 0, 2, 198, 2024]
+[:mouse_move, 230, 245, 2, 199, 2027]
+[:key_up_raw, 96, 0, 2, 200, 2028]
+[:key_down_raw, 13, 0, 2, 201, 2085]