I'm having a problem with my mansion catching fire as well, and I already respawned it once. I have an alternate theory though, so please tell me if this isn't possible:
When you use the cheat code to set time to day, (or perhaps naturally if the sun comes out while you're in their presence), zombies will burst into flames. I have seen this phenomena for myself. Another fact is that the mansion has big glass windows. My theory is that zombies are spawning in the exterior rooms with the windows and when the sun comes out they burst into flames setting the mansion on fire.
If this is true I don't know how one could prevent a fire from starting in the mansion, and it's a huge oversight by the Minecraft developers.
Mobs on fire cannot set blocks on fire. They can set the player on fire, though. I've personally watched skeletons on fire ignite creepers and causing them to explode, but that was in a modded world so I can't be sure if that was a modded addition or something in the vanilla game.
Skeletons being on fire shouldn't affect creepers in any way. I think the skeleton simply misfired at a creeper when trying to attack you, causing the creeper to turn hostile to it.
I believe I found the source of my problem. There is a small lava lake below my mansion, but it's several layers lower. The problem is there's a tree right next to the lava lake. That tree catches fire, the fire rises to a point where the tree touches the mansion, and the conflagration begins. I've built some cobblestone rows to shield the tree(s) from the lava lake, hopefully that keeps the mansion safe.
I believe I found the source of my problem. There is a small lava lake below my mansion, but it's several layers lower. The problem is there's a tree right next to the lava lake. That tree catches fire, the fire rises to a point where the tree touches the mansion, and the conflagration begins. I've built some cobblestone rows to shield the tree(s) from the lava lake, hopefully that keeps the mansion safe.
Beware that fire spread ignores any blocks between the fire/lava and flammable blocks; for example, I've had crafting tables catch fire after placing them on obsidian with no exposed lava in sight, and at least two layers of non-flammable blocks need to be above and around the lava in order to ensure it won't spread fire (fire itself has a slightly different spreading pattern).
Beware that fire spread ignores any blocks between the fire/lava and flammable blocks; for example, I've had crafting tables catch fire after placing them on obsidian with no exposed lava in sight, and at least two layers of non-flammable blocks need to be above and around the lava in order to ensure it won't spread fire (fire itself has a slightly different spreading pattern).
Your mistake was using obsidian, which is flammable. The block won't be destroyed but it will generate fire and thus burn your table. (try using a flint and steel on it and see what happens. )
I've been through the first floor and most of the 2nd floor of my mansion exploring, there's been no fire. I used cobblestone to barricade the lava--not the best choice in my opinion, but it was the most viable material that I had with me at the time..
Your mistake was using obsidian, which is flammable. The block won't be destroyed but it will generate fire and thus burn your table. (try using a flint and steel on it and see what happens. )
I've been through the first floor and most of the 2nd floor of my mansion exploring, there's been no fire. I used cobblestone to barricade the lava--not the best choice in my opinion, but it was the most viable material that I had with me at the time..
Obsidian is not flammable - have you ever seen an obsidian-ified lava lake spontaneously combust? I never have unless something flammable was placed on it (the situation I'm referring to is a lava lake in a cave or ravine which was converted to obsidian, then I put a crafting table on it to craft resources into blocks), and you can use a flint and steel to set cobblestone on fire (top only; only flammable blocks can have their sides set on fire).
Is this supposed to happen?
Haha! No, that's not supposed to happen. But if a lava lake spawned right by it then that's normal. Lava lakes are pretty rare though
yep, theres both a lava lake and a lake in the mansion, and the mansion is partly over a river
I'm having a problem with my mansion catching fire as well, and I already respawned it once. I have an alternate theory though, so please tell me if this isn't possible:
When you use the cheat code to set time to day, (or perhaps naturally if the sun comes out while you're in their presence), zombies will burst into flames. I have seen this phenomena for myself. Another fact is that the mansion has big glass windows. My theory is that zombies are spawning in the exterior rooms with the windows and when the sun comes out they burst into flames setting the mansion on fire.
If this is true I don't know how one could prevent a fire from starting in the mansion, and it's a huge oversight by the Minecraft developers.
Mobs on fire cannot set blocks on fire. They can set the player on fire, though. I've personally watched skeletons on fire ignite creepers and causing them to explode, but that was in a modded world so I can't be sure if that was a modded addition or something in the vanilla game.
Skeletons being on fire shouldn't affect creepers in any way. I think the skeleton simply misfired at a creeper when trying to attack you, causing the creeper to turn hostile to it.
I believe I found the source of my problem. There is a small lava lake below my mansion, but it's several layers lower. The problem is there's a tree right next to the lava lake. That tree catches fire, the fire rises to a point where the tree touches the mansion, and the conflagration begins. I've built some cobblestone rows to shield the tree(s) from the lava lake, hopefully that keeps the mansion safe.
Beware that fire spread ignores any blocks between the fire/lava and flammable blocks; for example, I've had crafting tables catch fire after placing them on obsidian with no exposed lava in sight, and at least two layers of non-flammable blocks need to be above and around the lava in order to ensure it won't spread fire (fire itself has a slightly different spreading pattern).
TheMasterCaver's First World - possibly the most caved-out world in Minecraft history - includes world download.
TheMasterCaver's World - my own version of Minecraft largely based on my views of how the game should have evolved since 1.6.4.
Why do I still play in 1.6.4?
Your mistake was using obsidian, which is flammable. The block won't be destroyed but it will generate fire and thus burn your table. (try using a flint and steel on it and see what happens. )
I've been through the first floor and most of the 2nd floor of my mansion exploring, there's been no fire. I used cobblestone to barricade the lava--not the best choice in my opinion, but it was the most viable material that I had with me at the time..
Obsidian is not flammable - have you ever seen an obsidian-ified lava lake spontaneously combust? I never have unless something flammable was placed on it (the situation I'm referring to is a lava lake in a cave or ravine which was converted to obsidian, then I put a crafting table on it to craft resources into blocks), and you can use a flint and steel to set cobblestone on fire (top only; only flammable blocks can have their sides set on fire).
TheMasterCaver's First World - possibly the most caved-out world in Minecraft history - includes world download.
TheMasterCaver's World - my own version of Minecraft largely based on my views of how the game should have evolved since 1.6.4.
Why do I still play in 1.6.4?