public

Rpg Maker Developers Group

Simple enough for a child, powerful enough for a developer

2 Followers

Bug Report: Sprites rotated incorrectly when used in enemy animations.

BMM Archive · July 15, 2026

BMM_Archive

LEVEL 14 Crown 47,300

Preserved forum archive. This topic stores the original first post and locally mirrored RPG Maker Web attachments when available. It is posted by the BMMPlay archive account, not by the original creator.

Original Source

Original title: Bug Report: Sprites rotated incorrectly when used in enemy animations.
Original author: Talonos
Original date: September 8, 2016
Source thread: https://forums.rpgmakerweb.com/threads/bug-report-sprites-rotated-incorrectly-when-used-in-enemy-animations.68040/
Source forum path: Game Development Engines > Legacy Engine Support > RPG Maker MV Support

Summary

Bug Explanation: When an enemy uses a skill, that skill's animation is mirrored automatically. However, if that animation contains any rotated sprites, the rotation is not mirrored; this leads to a sign error that causes the sprite to rotate in the wrong direction. (See video at the bottom) Error Report: None reported in console. Exact Steps on How to Replicate Bug: In the sample project, start a new game, then talk to the man to your left. Attack the bat, and watch as the bat attacks you. Both use the same animation (a...

Archived First Post

Bug Explanation: When an enemy uses a skill, that skill's animation is mirrored automatically. However, if that animation contains any rotated sprites, the rotation is not mirrored; this leads to a sign error that causes the sprite to rotate in the wrong direction. (See video at the bottom)
Error Report: None reported in console.
Exact Steps on How to Replicate Bug: In the sample project, start a new game, then talk to the man to your left. Attack the bat, and watch as the bat attacks you. Both use the same animation (a sword slash rotated at a 45 degree angle) but because of the sign error, the bat's attack looks like it is vertical, while still moving horizontally. If you wish to replicate this project without the sample project, just make any animation in which a sprite is rotated, and when that animation is bound to an enemy skill, the rotation will turn the wrong direction.
Sample Project (REQUIRED): https://www.dropbox.com/s/7c467yq0dhc33ef/RotatedSprites.zip?dl=0
Proposed Solution: You know the codebase better than I, but it seems to me as though if you replace line 1424 in rpg_sprites:

sprite.rotation = cell[4] * Math.PI / 180;

With this:

sprite.rotation = cell[4] * Math.PI / 180 * (this._mirror?-1:1);

It solves the issue (As seen in clip #2 in my video below.) Not sure if this has other unintended consequences elsewhere.
Video Demonstration: https://www.youtube.com/watch?v=_xtiRP0q5K4 (Sorry about the low quality)

Downloads / Referenced Files

Log in to download

Creator Claims / Removal

If you are the original creator and want this listing reassigned, edited, or removed, join BMMPlay and contact the moderators with proof that matches the original RPG Maker Web profile, linked GitHub, itch.io page, or another public creator identity.

#039 #rpg-maker-archive #mv-support

Replies (0)

No replies yet.

0 replies 1 view

Shopping Cart

Filter

Rpg Maker Developers Group