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Fix WalkingBadguy getting stuck on curved tiles (#3239) #3252

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Fix WalkingBadguy getting stuck on curved tiles (#3239) #3252

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mederand
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This pull request fixes issue #3239 where WalkingBadguy enemies would get stuck indefinitely on certain curved snow or cave tiles.

Changes:

  • When a collision against a shallow slope is detected (0 < slope_normal.x < 0.7), the enemy is manually nudged upward slightly.
  • Otherwise, if the slope is steep or it's a wall, the enemy turns around as usual.

Testing:

  • Reproduced the original stuck behavior in a sandbox level.
  • After applying the fix, enemies now smoothly turn around properly on curved tiles without getting stuck.
  • Regression tested normal wall collisions and enemy behavior across different tile types via playing a couple levels.

Closes #3239

MatusGuy
MatusGuy requested changes Apr 25, 2025
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src/badguy/walking_badguy.cpp Outdated
// Enemies get stuck in some tiles #3239 FIX
// When a bad guy is about to step onto a slope, have it manually step onto it
if (std::abs(hit.slope_normal.x) > 0.0f && std::abs(hit.slope_normal.x) < 0.7f) {
m_col.m_bbox.move(Vector(0, -5));
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Instead of moving the box directly, set the movement of the CollisionObject.

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Thanks for the review. I updated the fix using get_movement() and set_movement(). Let me know if there's anything I need to adjust.

@mederand mederand force-pushed the fix-enemy-stuck-tiles branch from 1e57453 to 907ca4e Compare April 25, 2025 22:51
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Successfully merging this pull request may close these issues.

[Bug]: Enemies get stuck in some tiles
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@mederand @MatusGuy