Neo is a barebones, basic movement emulator for Minecraft's Java Edition physics (for version 1.8)
Neo is not intended to be used as provided; it is a base to understand movement emulation and continue to add support for further scenarios.
Comments have been left in places where fixes are required.
- Ladders - comments have been left where they need to be implemented. Refer to MCP
- Potion effects - to be implemented in jumping and aiMoveSpeed
- Water and lava movement - to be implemented in move entity with heading. Refer to MCP
- Motion and bounding boxes for colliding blocks - look in
me.hydro.emulator.collision. Refer to MCP - Velocity/Knockback
- Post 1.8 clients
Each player you're emulating should have their own Emulator object.
On a flying packet, call Emulator#runIteration with an IterationInput object, which can be created like so:
final AxisAlignedBB lastReportedBoundingBox = new AxisAlignedBB(
fromX - 0.3,
fromY,
fromZ - 0.3,
fromX + 0.3,
fromY + 1.8,
fromZ + 0.3
);
final IterationInput iteration = IterationInput.builder()
.to(new Vector(x, y, z)) // location from the flying packet
.yaw(yaw) // player's current yaw
.ground(onGroundBoolean)
.jumping(jumpingBoolean) // you'll want to bruteforce this
.forward(forward) // you'll want to bruteforce this - should be '1', '0' or '-1'
.strafing(strafing) // you'll want to bruteforce this - should be '1', '0' or '-1'
.sprinting(sprintingBoolean) // you'll want to bruteforce this (the sprinting state can desync)
.usingItem(useItemBoolean) // you'll want to bruteforce this
.hitSlowdown(hitSlowdownBoolean) // you'll want to bruteforce this
.sneaking(sneakingBoolean)
.lastReportedBoundingBox(lastReportedBoundingBox) // from location, as a bounding box
.build();This method returns an IterationResult object.
Upon finding the correct result, run Emulator#confirm on the IterationHolder received from the IterationResult.
A demo in code can be found in examples/.
Neo is licensed under the MIT License. Have fun