DOOM 2D Audio Sequencer Guide

This guide covers the basics of using the DOOM Audio Sequencer Snapmap.

The current release is version one, Snapmap code (ETCAVB3L)
Due to burnout with the editor and lack of interest in the map, I haven't updated it. However, I figured out a way to save memory to add more save states and possibly a new feature on the offchance that anyone would want such things.

If you find typos in the guide, bugs in the map, or have any questions, please leave a comment below!

This tool uses 798 of the non-looping 2D Audio sound samples. It offers a fun way to experiment and create with these sounds, and I hope it inspires snapmap makers to try and create their own custom music and SFX!

General- (Always available)

Use equipment: Toggle player speed

Melee: Toggle HUD

Use key: Toggle beats, interact with buttons

Selecting Sounds- (Only available when standing in a column's ground box trigger)

• Can press and hold

• Can press and hold

Secondary fire: Load sound

*User defined input 1 default key is "G", input 2 is "R". I use numpad+ and numpad-, change these keys to something intuitive as you will use them a lot.

The sequencer can be broken down into several components:

• The HUD
  
• The tempo and flow settings
  
• The notes
  
• The in-game save/load system

The large transparent green and red blocks shown allow you to start and pause the sequencer. Once started, it will advance the beat by the current tempo. The smaller transparent white block can be used to jump to the start of the sequence from any position. The current beat is indicated by the thin transparent white bar that extends across the sequencer.

• Move sequence one step back
  
• Move sequence one step forward
  
• Clear all enabled blocks
  
• Decrease tempo
  
• Increase tempo

All the way to the right are two buttons that control the maximum beats in a sequence (default is a full 8, this number can be reduced all the way to 1). There is no indicator as to current max beat, however, it should be visible if adjusted while sequencer is running.

The solid white blocks are 'off', no sound will play when that beat is reached. The blocks can be enabled by walking to them and pressing the use key, upon which the current selected sound will play and the block will change to green. When standing in the translucent trigger that spans each column, you can change the selected note. The current note name and number is given in the HUD, user defined inputs 1 & 2 are used to select different notes. You may press and hold down the button to scroll quickly through sounds. The saved sound can be set to the current note with primary fire. The saved sound can be recalled in any column with alternate fire.

Take note of the color of the translucent ground trigger. The two orange ones on the left can have their sound changed with each new save state, which is explained in the next section.

Remember to take advantage of the 'use equipment' button, which allows you to cover much more ground.

These controls allow you to switch between save states. A save state represents the current layout of the sequencer, specifically, which blocks are on or off. It also represents the sound of each of the orange columns. Note that tempo and other information is not contained in a save state.

The 4 thin white translucent blocks allow you to choose how many save states you work with and which one is currently selected. You can have between 1 and 4 states active.

The black obelisk toggles auto-loading. When auto-load is enabled, the next state will automatically load when the last beat in the sequence is reached, 1 - 4 looping back to 1.

The towers of save and load are used to save the sequencer state and to manually load it. Note that the default state is that all blocks are off, this can be used as an alternate way to clear the sequencer before working on the next state.

• Sound range (596 - 607) = Strings
  Includes distorted guitar sounds
  
• Sound range (608 - 634) = Synths
  Includes distorted bass sounds
  
• Sound range (635-743) = Classic SFX
  Sounds from the classic DOOM games
  
• Sound range (744-775) = UI

• Sound range (776-788) = Explosions

• Sound range (789-798) = Gore

If you are changing a sound and step outside of the columns box trigger, your next change will leap higher than 1 value

Sounds that play and sustain for a length of time (horns, violins, etc.) can become muddy and cannot be forcibly shortened within the tool. I actually tried including a way of forcing the sound to stop before the start of the next beat, but the result was buggy. Note that when you're making sounds and songs in your own personal snapmap, you can use end sound triggers to achieve better flexibility.

Also, a little worn out as I write this guide, I appreciate any suggestions as to where I need to elaborate, I know this is all a bit terse.