diff --git a/Docs/Devdocs/NegBPMsTutorial.html b/Docs/Devdocs/NegBPMsTutorial.html new file mode 100644 index 0000000000..ee9d34f0c7 --- /dev/null +++ b/Docs/Devdocs/NegBPMsTutorial.html @@ -0,0 +1,130 @@ + + +Negative BPM/Stop Tutorial by WinDEU + + + +Hello everyone, and welcome to WinDEU's Negative BPM tutorial! Making negative +BPMs is pretty complex, so hopefully this guide will help you guys out.
+
+NOTE: I am using +SM 3.95 for this tutorial. 3.9 works as well, and is probably better to use +for playback purposes. When a negative BPM hits in edit mode, 3.95 jumps very +quickly (but not instantly) to the next point in the chart, whereas 3.9 does +do it instantly.
+
+What are negative BPMs? +Negative BPMs are the act of "warping" to a +later place in the chart, skipping multiple lines of the chart and +ignoring anything within those areas.
+
+Once you understand how negative BPMs work, it shouldn't be too hard to +figure out.
+
+So, let's start out with a screenshot.
+
+ +
+We start off on measure 1, with a current second of 0.055, and a BPM of 150. +Take note of the current second (upper right), this is very important in +dealing with negative BPMs.
+
+ +
+We are now on measure 2, with a BPM of -150, the exact opposite of the normal +BPM. Look at the current second again. It took 1.600 seconds to scroll 1 +whole measure at 150 BPM. Right now the current second is 1.655. Also of +note, the BPM goes back to 150 starting on measure 3. Now, here's where the +magic happens.
+
+
+We are on measure 3, back into positive BPM territory, but take a look at the +current second again. It is 0.055 on measure 3, the same value as the current +second from measure 1. This makes sense, because it took -1.600 seconds to +scroll from measure 2 to measure 3, because the BPM was negative during that +measure.
+
+
+As you can see from the current second on measure 4, it is the same value as measure 2.
+
+This is how the warping happens. When the chart first reaches the negative BPM, +it will search for the next positive BPM value. +NOTE: if there is no +positive BPM after the last negative BPM, I believe that the song ends +instantly, because it has reached the highest time possible within the chart. +Once the negative BPM hits, the current second will start counting backwards +forever.
+
+So, once the negative BPM hits, the game attempts to find the next place in +the chart that matches the current second of +the exact moment the negative BPM hit. At measure 2, the current second +was 1.655, and from the picture above, we can see that the next place that the +current second is 1.655 would be measure 4. So, you've effectively created a +warp going from measure 2 to measure 4, skipping everything in between.
+
+ +
+So basically, it comes down to this: When making negative BPMs, make sure that +the space between the negative BPM and the next positive BPM is +doubled (assuming that you're using +the same BPM, which would be the easiest method anyway).
+
+Negative Stops +

+Negative stops work about the same way as negative BPMs, without the mess +of having to change around the BPMs. There is a little math involved, though.
+
+Let's say that you want to do a 2-measure warp, like the negative BPM example +above. You need to simulate going backwards by two measures. Normal stops keep +the current second going, even though the chart is at a standstill. Negative +stops keep the current second going as well, only backwards.
+
+First, find the time it would take to progress two measures. You can do this +by either checking the current second, going down two measures, check the +current second again, and take the difference. Or, you can calculate it like this:
+
+60/[BPM] = [quarter note value, in seconds]
+[quarter note] x 8 = [2 measures, in seconds]
+
+So that translates to:
+
+60/150 = 0.400
+0.400 x 8 = 3.200 seconds = two measures
+
+Now that we've got that out of the way, it's time to make the negative stop. +You might have noticed something though. StepMania doesn't let you input +negative stops. F9 to decrease the stop values in edit mode doesn't let you +go below 0.00, and adding a negative stop through Add Stop from the menu +doesn't work either.
+
+Unfortunately, you'll have to manually insert the negative stop into the .sm +file. NOTE: Before you +manually insert any negative stops, make sure to save your chart, otherwise +any unsaved data will be lost!
+
+This time, take note of the current beat +(again, upper right). Now, open up the .sm file and look for the #STOPS tag. +If you want to add a -3.200 long stop in at measure 2, it will look like this:
+
+#STOPS:4.000=-3.200;
+
+After you're done, save the .sm, and go back to StepMania (which should still +be open). Press ESC, and go to the menu option "Revert From Disk." It will +warn you that any unsaved changes will be lost (which is why I gave the warning +before explaining all of this). Choose yes, and you should see the negative +stop value appear on measure 2.
+
+
+
+If you scroll to measure 2, and then to measure 4, you will see that the +current second values are the same, meaning that you've successfully created +a warp with negative stops!
+
+NOTE: Using a lot of +negative stops in a short period of time tends to lag ITG machines a lot, +so be wary of this.
+
+That covers the basics of negative BPMs and negative stops. Hopefully this guide helps! + + \ No newline at end of file diff --git a/Docs/Devdocs/negbpmtut/screen00214.jpg b/Docs/Devdocs/negbpmtut/screen00214.jpg new file mode 100644 index 0000000000..2212059623 Binary files /dev/null and b/Docs/Devdocs/negbpmtut/screen00214.jpg differ diff --git a/Docs/Devdocs/negbpmtut/screen00215.jpg b/Docs/Devdocs/negbpmtut/screen00215.jpg new file mode 100644 index 0000000000..48d703b825 Binary files /dev/null and b/Docs/Devdocs/negbpmtut/screen00215.jpg differ diff --git a/Docs/Devdocs/negbpmtut/screen00216.jpg b/Docs/Devdocs/negbpmtut/screen00216.jpg new file mode 100644 index 0000000000..b28c3ff933 Binary files /dev/null and b/Docs/Devdocs/negbpmtut/screen00216.jpg differ diff --git a/Docs/Devdocs/negbpmtut/screen00217.jpg b/Docs/Devdocs/negbpmtut/screen00217.jpg new file mode 100644 index 0000000000..1f91fa1f02 Binary files /dev/null and b/Docs/Devdocs/negbpmtut/screen00217.jpg differ diff --git a/Docs/Devdocs/negbpmtut/screen00218.jpg b/Docs/Devdocs/negbpmtut/screen00218.jpg new file mode 100644 index 0000000000..7d1e11d398 Binary files /dev/null and b/Docs/Devdocs/negbpmtut/screen00218.jpg differ diff --git a/Docs/Devdocs/negbpmtut/screen00221.jpg b/Docs/Devdocs/negbpmtut/screen00221.jpg new file mode 100644 index 0000000000..35876856b4 Binary files /dev/null and b/Docs/Devdocs/negbpmtut/screen00221.jpg differ