Hi, that's interesting.
I made a few more tests and found out:
a ) it does travel through walls, doors, monsters, pillars, corpses etc.
b ) it works with Holy Bolt and Firebolt as well, but only on slvl 17. As one can extract from your table, this most likely means that you need a travel speed of exactly 50. It would be interesting to find out if that works with arrows, too, but you would need clvl 73 to reach a speed of 50, and I don't know how to do that at the moment.
<span style="color:#FF0000">News!
Thanks to Shade I could do the tests with the bow. The speed formulas (for the Rogue) according to Jarulf are:
32 + (clvl-1)/4 (normal bow)
16 + Rnd[32] + (clvl-1)/4 (random speed arrows)
As you can see, you can only reach 50 with a normal bow if you have clvl 73: 32 + (73-1)/4 = 50. Since there wasn't an opportunity at first to hack the clvl above 50, I modded a Rift Bow into the game, because it shoots random speed arrows.
With clvl 50 and the Rift Bow, I could achieve random values between 28,25 and 59,25. Then, it was possible to shoot through walls! It worked with clvl 69 and 112 too, and so on. The problem now was to determine the exact value needed for penetrating the wall (or any other obstacle).
I recoded some hacks I got from xyz and could then set my clvl to 73. Then I tried the normal bow and each shot penetrated the wall, as expected. Further tests with other clvls brought to light that you need a clvl between 69 and 76. It does not work with 68 or 77.
Now it is easy to calculate the exact speed needed. It has to be between 32 + (69-1)/4 and 32 + (76-1)/4, that is between 49 and 50,75. Each missile which travels with a speed between 49 and 50,75 can penetrate each one-tile-obstacle!
I made a few more tests and found out:
a ) it does travel through walls, doors, monsters, pillars, corpses etc.
b ) it works with Holy Bolt and Firebolt as well, but only on slvl 17. As one can extract from your table, this most likely means that you need a travel speed of exactly 50. It would be interesting to find out if that works with arrows, too, but you would need clvl 73 to reach a speed of 50, and I don't know how to do that at the moment.
<span style="color:#FF0000">News!
Thanks to Shade I could do the tests with the bow. The speed formulas (for the Rogue) according to Jarulf are:
32 + (clvl-1)/4 (normal bow)
16 + Rnd[32] + (clvl-1)/4 (random speed arrows)
As you can see, you can only reach 50 with a normal bow if you have clvl 73: 32 + (73-1)/4 = 50. Since there wasn't an opportunity at first to hack the clvl above 50, I modded a Rift Bow into the game, because it shoots random speed arrows.
With clvl 50 and the Rift Bow, I could achieve random values between 28,25 and 59,25. Then, it was possible to shoot through walls! It worked with clvl 69 and 112 too, and so on. The problem now was to determine the exact value needed for penetrating the wall (or any other obstacle).
I recoded some hacks I got from xyz and could then set my clvl to 73. Then I tried the normal bow and each shot penetrated the wall, as expected. Further tests with other clvls brought to light that you need a clvl between 69 and 76. It does not work with 68 or 77.
Now it is easy to calculate the exact speed needed. It has to be between 32 + (69-1)/4 and 32 + (76-1)/4, that is between 49 and 50,75. Each missile which travels with a speed between 49 and 50,75 can penetrate each one-tile-obstacle!