[MCPE-17114] Mob Spawners Work in Light Level Above 12 Created: 17/Sep/16  Updated: 09/Mar/19  Resolved: 08/Nov/16

Status: Resolved
Project: Minecraft (Bedrock codebase)
Component/s: None
Affects Version/s: 0.15.90.7
Fix Version/s: 0.16.1

Type: Bug
Reporter: B
Resolution: Fixed Votes: 2
Labels: light, spawner

Attachments: PNG File Minecraft_ Windows 10 Edition 1_28_2017 10_13_04 PM.png     PNG File Minecraft_ Windows 10 Edition 1_28_2017 9_24_50 PM.png     PNG File Screenshot_2016-09-17-14-36-00.png     JPEG File scrnsht151[1].jpg    
Issue Links:
Cloners
is cloned by MCPE-42427 Mob spawners are broken. Mobs keep sp... Resolved
Duplicate
is duplicated by MCPE-17226 Spawner won't stop spawning Resolved
is duplicated by MCPE-17276 Mobs spawning in the floor in Dungeon... Resolved
is duplicated by MCPE-17334 Monster Spawners are not disabled whe... Resolved
is duplicated by MCPE-17470 Dungeons will spawn mob, even when it... Resolved
Relates
relates to MCPE-14467 Hostile mobs are spawning on/in trans... Resolved
relates to MCPE-17121 Monster spawner spawns mobs in the bl... Resolved
Confirmation Status: Confirmed
Platform: Phone - Android - Samsung Other (Specify in description)
CHK:

 Description   

Mob spawners do not respond to light levels. Mobs still spawn with torches all around spawner and area. Also with redstone lamps lighting the room spawners remain active.

Tab Pro 10.1



 Comments   
Comment by thiago brilhante [ 03/Feb/17 ]

vai tomar no cu

Comment by PHO [ 03/Feb/17 ]

JRTasel: That's indeed interesting, but even so it's still not the same bug as the one originally reported in this ticket: mob spawners, at least, no longer spawn mobs under light.

Comment by Tasel [ 02/Feb/17 ]

But the issue only seems to be contained within the mob spawners themselves. Other light sources do not seem to be effected (at least as far as I can tell). If i turn off a red stone light, and log out and back in it stays off and the area around it stays dark. Only when it (or some other light source) is in proximity of a mob spawner does this appear to be an issue. Wouldn't that be in this ticket and not a general lighting issue?

As we have no F3 option, I can't tell when the issue is happening what the actual light situation is. If it's just a lighting glitch that isn't reporting right (although not sure why Mob spawners would cease/continue to work if this was the case) or if the issue is actually changing the lighting levels country to the light sources available.

Comment by PHO [ 30/Jan/17 ]

JRTasel: That must be a bug in lighting in general, not a bug in mob spawners. Please file a new ticket if it has not already been reported.

Comment by Tasel [ 29/Jan/17 ]

All torches removed inside area. this is the image after logging out and back in. As you see all area is lit up, but no light sources are in area.

Comment by Tasel [ 29/Jan/17 ]

Redstone lamps all off. Only source of light in room. Room appears dark when lamps turned off but no spawns. Logging out and back in shows this image.

Comment by Tasel [ 29/Jan/17 ]

Issue is not fixed. however is wider effected than reported. Issue is two fold -
1. Spawner will not spawn even if dark. When this issue is happening removing light sources (torches, redstone lights, etc) the room will appear dark. however login out of the realm and back in will show that even though all lights are off/gone, room is sitll completely lit up. I've attached an example image of this. Notice all redstone lights are off but room is completely lit up. Other areas do not seem to be effected.
2. When issue is occurring, adding light sources to a room will not light up the area. Once again the room will appear to be lit up, but logging out and back will show that the room is now dark. I don't have an image of this as mobs keep appearing and attacking.

This issue does not happen all the time. However on our realm (and the previous realm before the reset shortly after 1.0 release) was having this issue. When it is occurring it appears to effect all spanners at the same time, locking the lighting of the room till "Something" resets and the lighting in spawn rooms once again start working again. Cause and fix of issue is currently unknown.

Also to note - when spawners are working properly, logging out and back in still shows correct lighting inside a spawn room. (aka if lights are off it is dark, if lights are on it is light)

Comment by [Mojang] Mega_Spud (Jay Wells) [ 08/Nov/16 ]

Cannot reproduce this since the 0.16.1 update, so I'm assuming it's fixed.

Comment by [Mojang] Mega_Spud (Jay Wells) [ 17/Sep/16 ]

Having tested this further, I can confirm that this is an issue.

In the setup pictured, area around the spawner has a light level of >12 which should prevent all spawns.


9x9 room of glowstone with glowstone pillars around spawner

This setup would give light levels as shown here:

Comment by B [ 17/Sep/16 ]

Also confirmed in direct sunlight. Spawners remain active.

Comment by [Mojang] Mega_Spud (Jay Wells) [ 17/Sep/16 ]

Please add a photo of the setup you are describing.

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