ThatMapleDev

Magic Damage Formula - v40 Reverse Engineering

Overview

This document contains the 100% IDA-verified magic damage formula for MapleStory v40, reverse engineered from sub_515307 (CalcMagicDamagePerHit).

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Formula

ThatMapleDev

Archer Combat Mechanics (MapleStory v40b)

SpookStory Server Implementation Guide

This document provides comprehensive documentation of the Archer combat system, covering damage formulas, the 7-random heartbeat RNG model, Final Attack mechanics, Mortal Blow, and the RNG recovery system. All formulas and logic are IDA-verified against the v40 client binary.

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Table of Contents

ThatMapleDev

MapleStory v40 Physics - Fresh Reverse Engineering Analysis

Date: 2026-01-29 (Updated: 2026-02-01)
Method: Direct IDA analysis without existing documentation
Implementation: SpookyStory V2 (MaplePlayerController, MaplePhysicsEngine, MapleConstants)

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Implementation Status Legend

ThatMapleDev

Physics Pseudocode — All Functions, All Paths (Audit-Verified)

Companion to physics_engine.md

Important

All paths cross-verified against raw IDA decompilation on 2026-02-16. DoJump path ordering was corrected (originally had ladder/foothold swapped). HandleGroundedMovement and ClampToBounds were added (previously missing).

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