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Math Matters

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    kbal@fedia.ioK This user is from outside of this forum
    kbal@fedia.ioK This user is from outside of this forum
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    wrote on last edited by
    #12

    Depends how tall they are.

    S 1 Reply Last reply
    44
    • zagorath@aussie.zoneZ [email protected]

      But D&D uses Chebyshev distance, not Euclidean. No need for Pythagoras. And Pathfinder alternates between Chebyshev and Manhattan to approximate Euclidean.

      A This user is from outside of this forum
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      wrote on last edited by
      #13

      i wish that it was more common to refer to the metrics in terms of what they are instead of who discovered them. i can’t ever remember off the top of my head if the chebyshev one is supposed to be the diamond metric (L^1^) or the square metric (L^∞^).

      zagorath@aussie.zoneZ J 2 Replies Last reply
      13
      • zagorath@aussie.zoneZ [email protected]

        But D&D uses Chebyshev distance, not Euclidean. No need for Pythagoras. And Pathfinder alternates between Chebyshev and Manhattan to approximate Euclidean.

        S This user is from outside of this forum
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        wrote on last edited by
        #14

        Playing combat on a grid is actually presented as an optional rule and not the default for 5E, despite its popularity

        zagorath@aussie.zoneZ 1 Reply Last reply
        20
        • S [email protected]

          Playing combat on a grid is actually presented as an optional rule and not the default for 5E, despite its popularity

          zagorath@aussie.zoneZ This user is from outside of this forum
          zagorath@aussie.zoneZ This user is from outside of this forum
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          wrote on last edited by
          #15

          So are feats, and point buy.

          kichae@wanderingadventure.partyK 1 Reply Last reply
          12
          • A [email protected]

            i wish that it was more common to refer to the metrics in terms of what they are instead of who discovered them. i can’t ever remember off the top of my head if the chebyshev one is supposed to be the diamond metric (L^1^) or the square metric (L^∞^).

            zagorath@aussie.zoneZ This user is from outside of this forum
            zagorath@aussie.zoneZ This user is from outside of this forum
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            wrote on last edited by
            #16

            Personally I find Euclidean easy to remember because it matches the much more general Euclidean geometry. So you just remember "this is like, real maths". Manhattan distance is easy to remember because it does basically "refer to the metrics in terms of what they are", so long as you remember that Manhattan famously is a grid. Chebyshev is the hardest, but for me it's a simple matter of "the one that's left over".

            I have no idea, based on the name, what diamond and square metrics are supposed to be.

            A 1 Reply Last reply
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            • D [email protected]

              That is one reason I don't like D&D, it is a glorified boardgame the hides it's wargame roots under a very thin layer.
              I like tactical rpg on the computer but investing that level of math and detail in a pen & paper game is so boring, for me at least.

              snowsuit2654@lemmy.blahaj.zoneS This user is from outside of this forum
              snowsuit2654@lemmy.blahaj.zoneS This user is from outside of this forum
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              wrote on last edited by
              #17

              My group plays pretty loose goosy with the rules. We just look at it and make a quick estimate of whether something looks in range. They also have little range finder tools that are helpful for quickly determine cones, spheres, etc. We're also the kind of party that doesn't really keep track of gold. Apparently gold has a weight?

              For this reason I actually don't like playing one shots with people I don't know, because they don't play by all of our house rules, lol.

              D J 2 Replies Last reply
              5
              • zagorath@aussie.zoneZ [email protected]

                But D&D uses Chebyshev distance, not Euclidean. No need for Pythagoras. And Pathfinder alternates between Chebyshev and Manhattan to approximate Euclidean.

                S This user is from outside of this forum
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                wrote on last edited by
                #18

                There's no grid in the sky, though

                zagorath@aussie.zoneZ 1 Reply Last reply
                8
                • kbal@fedia.ioK [email protected]

                  Depends how tall they are.

                  S This user is from outside of this forum
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                  wrote on last edited by
                  #19

                  Holy shit it does.

                  The halfling and dwarf are out of luck. Human stands a chance.

                  1 Reply Last reply
                  25
                  • D [email protected]

                    That is one reason I don't like D&D, it is a glorified boardgame the hides it's wargame roots under a very thin layer.
                    I like tactical rpg on the computer but investing that level of math and detail in a pen & paper game is so boring, for me at least.

                    S This user is from outside of this forum
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                    wrote on last edited by
                    #20

                    If you actually have to use that much math more than once in a blue moon, you're doing it wrong.

                    D 1 Reply Last reply
                    6
                    • S [email protected]

                      There's no grid in the sky, though

                      zagorath@aussie.zoneZ This user is from outside of this forum
                      zagorath@aussie.zoneZ This user is from outside of this forum
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                      wrote on last edited by
                      #21

                      Fair point. I actually don't know what, if anything, the D&D (or Pathfinder) rules say on this matter. I've always just treated it as a natural 3D extension of the 2D grid rules. If they're three squares in one direction, same square in the other, and 10 feet up, I'd treat that as 15 feet away because of Chebyshev rules.

                      entropicdrift@lemmy.sdf.orgE S 2 Replies Last reply
                      5
                      • isyasad@lemmy.worldI [email protected]

                        Depends on which part of them needs to be blessed?

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                        wrote on last edited by [email protected]
                        #22

                        The opposite of that happened to Achilles

                        1 Reply Last reply
                        6
                        • zagorath@aussie.zoneZ [email protected]

                          Personally I find Euclidean easy to remember because it matches the much more general Euclidean geometry. So you just remember "this is like, real maths". Manhattan distance is easy to remember because it does basically "refer to the metrics in terms of what they are", so long as you remember that Manhattan famously is a grid. Chebyshev is the hardest, but for me it's a simple matter of "the one that's left over".

                          I have no idea, based on the name, what diamond and square metrics are supposed to be.

                          A This user is from outside of this forum
                          A This user is from outside of this forum
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                          wrote on last edited by [email protected]
                          #23

                          i think that’s a good point and that is a nice way to remember them. i think a lot of it just comes down to personal preference.

                          i like calling them the diamond/square/circle metrics because those shapes describe the sets of points that have unit length. i’ve found this wikipedia picture to be very helpful, and the diamond/square/circle terminology is my way of paying my respects to the picture.

                          zagorath@aussie.zoneZ 1 Reply Last reply
                          9
                          • S [email protected]

                            If you actually have to use that much math more than once in a blue moon, you're doing it wrong.

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                            wrote on last edited by [email protected]
                            #24

                            If I think more about it i come to conclusion that is not really the math per se, but what I find boring is that 90% of the rules (measured by feeling) are about battle and battle takes such a huge and detailed part in the game.

                            S 1 Reply Last reply
                            2
                            • kn0wmad1c@programming.devK This user is from outside of this forum
                              kn0wmad1c@programming.devK This user is from outside of this forum
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                              wrote on last edited by
                              #25

                              If the cleric is 30ft in the air, and the allies are 20ft away but on the ground, then the allies are probably 10ft tall

                              1 Reply Last reply
                              17
                              • snowsuit2654@lemmy.blahaj.zoneS [email protected]

                                My group plays pretty loose goosy with the rules. We just look at it and make a quick estimate of whether something looks in range. They also have little range finder tools that are helpful for quickly determine cones, spheres, etc. We're also the kind of party that doesn't really keep track of gold. Apparently gold has a weight?

                                For this reason I actually don't like playing one shots with people I don't know, because they don't play by all of our house rules, lol.

                                D This user is from outside of this forum
                                D This user is from outside of this forum
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                                wrote on last edited by
                                #26

                                In general I don't really like Pen&Paper RPGs where you need miniatures (and for worse range finder tools) to play them.
                                But that is a me thing, don't read my words as that I want to say D&D should change. Far away from that, D&D is a great game and I love it on the PC (where it IMHO only works, not at the table)

                                1 Reply Last reply
                                0
                                • A [email protected]

                                  Me at 20: I'm never going to need Chebyshev distance in real life. Why am I learning this?

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                                  wrote on last edited by
                                  #27

                                  Happy cake day!

                                  A 1 Reply Last reply
                                  2
                                  • zagorath@aussie.zoneZ [email protected]

                                    So are feats, and point buy.

                                    kichae@wanderingadventure.partyK This user is from outside of this forum
                                    kichae@wanderingadventure.partyK This user is from outside of this forum
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                                    wrote on last edited by
                                    #28

                                    And multiclassing.

                                    1 Reply Last reply
                                    10
                                    • T [email protected]

                                      Happy cake day!

                                      A This user is from outside of this forum
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                                      wrote on last edited by
                                      #29

                                      Happy cake day to you!

                                      T 1 Reply Last reply
                                      3
                                      • zagorath@aussie.zoneZ [email protected]

                                        But D&D uses Chebyshev distance, not Euclidean. No need for Pythagoras. And Pathfinder alternates between Chebyshev and Manhattan to approximate Euclidean.

                                        M This user is from outside of this forum
                                        M This user is from outside of this forum
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                                        wrote on last edited by
                                        #30

                                        Is that so? Why would some spells specify geometry then? For example fireball says it is a 20 ft radius while Hallucinatory Terrain specifies that it affects a 150 ft cube which, under Chebyshev distance, would be the same as a sphere right? My understanding was that D&D 5e uses euclidean distance with a minimum threshold of a square that has to be covered to be counted.

                                        kichae@wanderingadventure.partyK zagorath@aussie.zoneZ 2 Replies Last reply
                                        7
                                        • M [email protected]

                                          Is that so? Why would some spells specify geometry then? For example fireball says it is a 20 ft radius while Hallucinatory Terrain specifies that it affects a 150 ft cube which, under Chebyshev distance, would be the same as a sphere right? My understanding was that D&D 5e uses euclidean distance with a minimum threshold of a square that has to be covered to be counted.

                                          kichae@wanderingadventure.partyK This user is from outside of this forum
                                          kichae@wanderingadventure.partyK This user is from outside of this forum
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                                          wrote on last edited by
                                          #31

                                          Fireball says radius, but in a non-Euclidian geometry radius doesn't translate to a Euclidian sphere. Embrace the cube of constant radius!

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