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Editing v0.34 Talk:Minecart
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* skipping does not depend on weight [http://www.bay12forums.com/smf/index.php?topic=109460.msg3285968#msg3285968] | * skipping does not depend on weight [http://www.bay12forums.com/smf/index.php?topic=109460.msg3285968#msg3285968] | ||
* Minecart derailment speed, Track Stop friction [http://www.bay12forums.com/smf/index.php?topic=112831.msg3508793#msg3508793] | * Minecart derailment speed, Track Stop friction [http://www.bay12forums.com/smf/index.php?topic=112831.msg3508793#msg3508793] | ||
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== Cave-Ins == | == Cave-Ins == | ||
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== Minecart Tricks == | == Minecart Tricks == | ||
− | Has anyone considered compiling a list of unusual things you can do with minecarts, like dwarven rollercoasters or traps? | + | Has anyone considered compiling a list of unusual things you can do with minecarts, like dwarven rollercoasters or traps? |
Sure. Here are a few examples: | Sure. Here are a few examples: | ||
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How about minecart "landing pods" that actually launch the soldiers out of the fort into the middle of the battlefield, splattering enemies while delivering the soldiers straight to the fun? Could this be done safely? -[[User:Billw|Billw]] | How about minecart "landing pods" that actually launch the soldiers out of the fort into the middle of the battlefield, splattering enemies while delivering the soldiers straight to the fun? Could this be done safely? -[[User:Billw|Billw]] | ||
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== Bridges versus Hatches == | == Bridges versus Hatches == | ||
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It's been noted that retracting bridges can be used as track direction switching points, as well as the fact that bridges will ''fling'' minecarts if they happen to be in the way while the bridge is switching. Would hatch covers also work for this? If they do, they would have the advantages of being instantaneous (rather than a 100 tick delay) and non-disruptive to minecarts (since they don't flingify stuff). --[[User:Quietust|Quietust]] 03:59, 17 June 2012 (UTC) | It's been noted that retracting bridges can be used as track direction switching points, as well as the fact that bridges will ''fling'' minecarts if they happen to be in the way while the bridge is switching. Would hatch covers also work for this? If they do, they would have the advantages of being instantaneous (rather than a 100 tick delay) and non-disruptive to minecarts (since they don't flingify stuff). --[[User:Quietust|Quietust]] 03:59, 17 June 2012 (UTC) | ||
− | Hatches have close to the same friction as ground thus making a poor substitute for track. | + | Hatches have close to the same friction as ground thus making a poor substitute for track. |
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== Capacity == | == Capacity == | ||
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:::Actually, this is an interesting result of (real-world) physics. Gravitational potential energy is mass * gravity * height, while kinetic energy is 1/2 * mass * velocity<sup>2</sup>. When you set these two formulas equal the mass terms cancel out. That means that two objects that start at the same height (and velocity) will have the same final velocity after rolling down the same hill (ignoring all other forces like wind resistance). I don't know how detailed the game's modeling of this is, but your result is mostly expected (though it does imply that rollers apply a "constant velocity" to minecarts). To find out if mass is being modeled correctly you can transfer the energy to something else. For instance, if you place a [[dog]] on the tracks at the bottom of the hill, the loaded platinum minecart should hit the dog and continue on at roughly the same speed. The featherwood minecart may hit the dog and stop completely, having insufficient energy left to continue moving. Or they may both do the same thing, strongly implying that mass is not being modeled. --[[User:Loci|Loci]] 20:27, 26 February 2013 (UTC) | :::Actually, this is an interesting result of (real-world) physics. Gravitational potential energy is mass * gravity * height, while kinetic energy is 1/2 * mass * velocity<sup>2</sup>. When you set these two formulas equal the mass terms cancel out. That means that two objects that start at the same height (and velocity) will have the same final velocity after rolling down the same hill (ignoring all other forces like wind resistance). I don't know how detailed the game's modeling of this is, but your result is mostly expected (though it does imply that rollers apply a "constant velocity" to minecarts). To find out if mass is being modeled correctly you can transfer the energy to something else. For instance, if you place a [[dog]] on the tracks at the bottom of the hill, the loaded platinum minecart should hit the dog and continue on at roughly the same speed. The featherwood minecart may hit the dog and stop completely, having insufficient energy left to continue moving. Or they may both do the same thing, strongly implying that mass is not being modeled. --[[User:Loci|Loci]] 20:27, 26 February 2013 (UTC) | ||
− | ::::Ah, thanks for the refresher course. The thing is i didn't use a slope for pushing test. Then again that doesn't really matter since deceleration is not dependent on mass. Friction, as the only force affecting the minecart (since normal force and | + | ::::Ah, thanks for the refresher course. The thing is i didn't use a slope for pushing test. Then again that doesn't really matter since deceleration is not dependent on mass. Friction, as the only force affecting the minecart (since normal force and gravitation cancel each out on horizontal surface), is mass * deceleration and equals to friction coefficient * normal force (mass * gravity) ('''F<sub>F</sub> = a*m = µ<sub>k</sub>*N = µ<sub>k</sub>*m*g''' => '''a = µ<sub>k</sub>*g''') |
::::So rather than affecting their speed/deceleration it should affect initial velocity. --[[User:HYBRID BEING|HYBRID BEING]] 09:37, 27 February 2013 (UTC) | ::::So rather than affecting their speed/deceleration it should affect initial velocity. --[[User:HYBRID BEING|HYBRID BEING]] 09:37, 27 February 2013 (UTC) | ||
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== Magma-Safe == | == Magma-Safe == | ||
− | It turns out that nether cap minecarts are not magma-safe and can not be used for hauling magma. | + | It turns out that nether cap minecarts are not magma-safe and can not be used for hauling magma. |
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