v1.0.4 — Patch both TileCollision AND SlopeCollision

SlopeCollision (not just TileCollision) has the same Math.Abs(Velocity.X) tolerance bug.

If SlopeCollision's check fails, the player never gets positioned on the slope surface. Then TileCollision treats the slope as a solid wall and blocks horizontal movement.

This version patches BOTH methods. v1.0.3 only patched TileCollision, which wasn't enough.

v1.0.3 — Fixed tolerance instead of speed-dependent

Fixes entities falling through slopes in v1.0.2.

Root cause found: The slope pass-through check uses Math.Abs(Velocity.X) as tolerance. When the player stops on a slope, Velocity.X = 0, tolerance disappears, and the check fails by ~1 ULP on ARM64.

Fix: Replace Math.Abs(Velocity.X) with a fixed 1-pixel tolerance in both slope type checks. The check is now consistent regardless of player speed.

v1.0.0–v1.0.2 users: Please update. Previous versions used flawed approaches.

v1.0.2 — Direct IL patch, no more false collisions

Completely rewritten fix. Instead of hooking TileCollision from outside (which broke floor collisions), the mod now directly patches the broken comparison inside TileCollision using an IL hook.

What changed: The broken <= comparison in the slope pass-through check is patched to add 1 pixel of tolerance. This fixes the root cause without affecting any other collision behavior.

v1.0.0/v1.0.1 users: Uninstall those versions — they had a fundamental flaw in the approach.

v1.0.1 — Fix falling animation

Fixes falling animation and floating issues from v1.0.0.

What changed: Instead of nudging position to clear the collision, the fix now simply returns the original velocity when a false slope collision is detected. No position correction = no falling animation.

Install: Same as before — drop ArmSlopeFix.tmod in your Mods folder.

v1.0.0 — ARM64 Slope Fix

Initial release: fixes ARM64 float precision bug in Collision.TileCollision.

What's fixed:

• Players can now walk up slopes left-to-right on ARM64 macOS
• NPCs and mobs no longer get stuck on slopes when server runs as ARM64

Installation: Copy to your Mods folder. Works on both client and server.

Requires: tModLoader 1.4.4.9+ (2026.02)