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Skill v1.0.2
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PublishedJune 27, 2026 at 02:53 PM
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version: "1.0.2" name: uloop-simulate-mouse-input description: "Simulate Mouse.current input in PlayMode through Unity Input System. Use for gameplay clicks, mouse delta, or scroll; use simulate-mouse-ui for EventSystem UI elements." context: fork
Task
Simulate mouse input via Input System in Unity PlayMode: $ARGUMENTS
Workflow
- Ensure Unity is in PlayMode (use
npx --yes uloop-cli@2.2.0 control-play-mode --action Playif not) - For Click/LongPress: determine the target screen position (use
npx --yes uloop-cli@2.2.0 screenshotto find coordinates) - Execute the appropriate
npx --yes uloop-cli@2.2.0 simulate-mouse-inputcommand - Take a screenshot to verify the result:
npx --yes uloop-cli@2.2.0 screenshot --capture-mode rendering - Report what happened
Tool Reference
bash
npx --yes uloop-cli@2.2.0 simulate-mouse-input --action <action> [options]
Parameters
| Parameter | Type | Default | Description | |
|---|---|---|---|---|
--action | enum | Click | Click, LongPress, MoveDelta, SmoothDelta, Scroll | |
--x | number | 0 | Target X position (origin: top-left). Used by Click and LongPress. | |
--y | number | 0 | Target Y position (origin: top-left). Used by Click and LongPress. | |
--button | enum | Left | Mouse button: Left, Right, Middle. Used by Click and LongPress. | |
--duration | number | 0 | Hold duration for LongPress, or interpolation duration for SmoothDelta (seconds). For Click, 0 = one-shot tap. | |
--delta-x | number | 0 | Delta X in pixels for MoveDelta/SmoothDelta. Positive = right. | |
--delta-y | number | 0 | Delta Y in pixels for MoveDelta/SmoothDelta. Positive = up. | |
--scroll-x | number | 0 | Horizontal scroll delta for Scroll action. | |
--scroll-y | number | 0 | Vertical scroll delta for Scroll action. Typically 120 per notch. |
Actions
| Action | What it injects | Description | |
|---|---|---|---|
Click | Mouse.current button press → release | Inject a button click so game logic detects wasPressedThisFrame | |
LongPress | Mouse.current button press → hold → release | Hold a button for --duration seconds | |
MoveDelta | Mouse.current.delta | Inject mouse movement delta one-shot (e.g. for FPS camera look) | |
SmoothDelta | Mouse.current.delta (per-frame) | Inject mouse delta smoothly over --duration seconds (human-like camera pan) | |
Scroll | Mouse.current.scroll | Inject scroll wheel input (e.g. for hotbar or zoom) |
Global Options (optional)
| Option | Description | |
|---|---|---|
--project-path <path> | Optional. Use only when the target Unity project is not the current directory. |
When to use this vs simulate-mouse-ui
| Scenario | Tool | |
|---|---|---|
| Click a Unity UI Button (IPointerClickHandler) | simulate-mouse-ui | |
Destroy a block in Minecraft (reads Mouse.current.leftButton) | simulate-mouse-input when the project uses the New Input System | |
| Place a block with right-click | simulate-mouse-input --button Right when the project uses the New Input System | |
| Drag a UI slider | simulate-mouse-ui --action Drag | |
| Look around with mouse (FPS camera) | simulate-mouse-input --action MoveDelta when the project uses the New Input System | |
| Scroll hotbar slots | simulate-mouse-input --action Scroll when the project uses the New Input System |
Examples
bash
# Left-click at screen center (for game logic)npx --yes uloop-cli@2.2.0 simulate-mouse-input --action Click --x 400 --y 300# Right-click at screen center (e.g. place block)npx --yes uloop-cli@2.2.0 simulate-mouse-input --action Click --x 400 --y 300 --button Right# Hold left-click for 2 seconds (e.g. mine block)npx --yes uloop-cli@2.2.0 simulate-mouse-input --action LongPress --x 400 --y 300 --duration 2.0# Look right (FPS camera)npx --yes uloop-cli@2.2.0 simulate-mouse-input --action MoveDelta --delta-x 100 --delta-y 0# Scroll up (e.g. previous hotbar slot)npx --yes uloop-cli@2.2.0 simulate-mouse-input --action Scroll --scroll-y 120# Scroll down (e.g. next hotbar slot)npx --yes uloop-cli@2.2.0 simulate-mouse-input --action Scroll --scroll-y -120# Smooth camera pan right over 0.5 secondsnpx --yes uloop-cli@2.2.0 simulate-mouse-input --action SmoothDelta --delta-x 300 --delta-y 0 --duration 0.5
Prerequisites
- Unity must be in PlayMode
- Input System package must be installed (
com.unity.inputsystem) - Game code must read input via Input System API (e.g.
Mouse.current.leftButton.wasPressedThisFrame) - Use this only when the project already uses the New Input System.
Output
Returns JSON with:
Success: Whether the operation succeededMessage: Status messageAction: Echoes which action was executed (Click,LongPress,MoveDelta,SmoothDelta, orScroll)Button: Which button was used (nullable string; populated forClick/LongPress, null otherwise)PositionX: Target X coordinate (nullable float; populated forClick/LongPress)PositionY: Target Y coordinate (nullable float; populated forClick/LongPress)
These are the only six fields. There is no DeltaX, DeltaY, ScrollX, ScrollY, Duration, or hit-element field in the response — only the issued action, button, and target position are echoed back. Verify visual outcome with a follow-up screenshot.