Macros That React to Game Events

In the middle of a fight, a fixed sequence of taps falls apart. The boss lands a hit, health drops, a debuff sets in, and the rotation you recorded keeps swinging at nothing. Reacting at the right moment is not repeating steps, it is watching the screen and responding to what changed. It applies to the auto-buff in Ragnarok M and MU, the ability swap in Summoners War and Raid: Shadow Legends, the base defense in Clash of Clans, or the auto stages of Honkai: Star Rail and AFK Journey.

The screen is your sensor, not the logs

Here is the part that is usually told wrong out there. Emulo does not read combat logs or game memory. It does something simpler and safer: it watches the screen pixels, the same ones you see, and reacts to them. Every game event has a visible signal, and that signal is what becomes a trigger.

• Low health: the bar turns red. A color condition detects that shade, with a tolerance you tune. If you prefer the number, a text condition reads the value by OCR.
• Ready cooldown: the ability icon loses the gray and lights up. Color or image handles it.
• A debuff on the boss or a buff on you: an icon appears in the status bar. An image condition waits for it to show.
• A popup or error along the way: another image detects the window, and a tap closes it before moving on.

If you want the basics of these three triggers, the guide to image, text and color builds the vocabulary.

From event to action, on time

Reacting means chaining a condition and an action. “If health is below the threshold (color), use the potion.” “If the ability icon lit up (image) AND the enemy is still on screen, fire the ability.” Richer combinations use the “All true” (AND) and “Any true” (OR) groups, and the “Compound Action” bundles a whole reaction, with its own conditions, into a single block.

Timing matters, and the engine is built for it. It evaluates the cheapest checks first, a color read is nearly instant, and leaves OCR for when it is needed, so the macro spends most of its time ready to react. On the device, it goes back to checking the trigger within seconds even after sitting idle. Each step can have a minimum interval, so it does not repeat the same heal nonstop, and a state can wait for a trigger with a deadline and branch away if it never comes.

Why the screen, and not the data

Reading the screen instead of the internal data is not a limitation, it is the right choice. It works on any game you can see, without relying on integration. And it is safe: Emulo does not modify the APK, does not inject anything into the process and does not need root. On the phone it does not even read other apps content, only the pixels you allow it to capture, and all the recognition happens on the device itself. That privacy principle is detailed in what EmuloMobile is.

On both screens

The same reaction runs on both sides. On the PC, EmuloAgent watches the emulator (BlueStacks, LDPlayer, MuMu, Nox) from the outside and fires taps over ADB, sustaining several emulators in parallel. On the device, EmuloMobile does the same right on the phone or tablet, using Android accessibility to act and screen capture to see. The account and subscription are the same; each app keeps its own macros.

Use it responsibly

A macro that reacts on its own is powerful, so use it with care. Automation is allowed in some games and banned in others, especially in competitive play. Keep the automatic reactions for your repetitive tasks and check the title rules first.

Keep going

Want to build your first reaction? See the detection triggers and the first automation step by step, then download Emulo and start with the simplest reaction of all: low health, use the potion.