What is sirenalarmspeaker?

Siren Alarm Speaker is a mod for the game Mindustry. It adds a single block called a Speaker that sits quietly and darkly on your base until something switches it on. Once enabled, it plays a looping siren sound, pulses a red warning light, and can display a custom text alert on every player's screen. The block does nothing on its own, it only activates when an in-game logic processor tells it to. Each speaker is configured through an in-game dialog. You can choose whether the sound plays locally (fading with distance like normal game sounds) or globally (full volume across the entire map, useful for base-wide alerts). You also set a volume level, pick which siren sound file to use, and type an optional alarm message of up to 100 characters. The message supports color coding, so you can display red text like "INCOMING ATTACK" on screen. All settings are per-block, work in multiplayer, and save with the map. The alarm message can also be set from a logic processor rather than the dialog, using the same command syntax the game uses for its built-in message blocks. If multiple enabled speakers share identical message text, they collapse into a single on-screen line with a count rather than repeating the same alert. The game's logic buffer caps these messages at 400 characters, which overrides the dialog's shorter limit. This matches how the game's own message blocks behave. You can add custom siren sounds by placing .ogg or .mp3 files into a specific folder. Each file becomes a selectable option named after itself, sorted alphabetically. If no custom files are present, the mod falls back to a single default siren. The project is written in Java and requires JDK 17 to build. Desktop builds are straightforward, but full builds that also work on Android are handled through GitHub Actions or require the Android SDK locally.