prismarine-physics

Provide the physics engine for minecraft entities

Usage

const { Physics, PlayerState } = require('prismarine-physics')
const { Vec3 } = require('vec3')

const mcData = require('minecraft-data')('1.13.2')
const Block = require('prismarine-block')('1.13.2')

const physics = Physics(mcData, world)
const controls = {
  forward: false,
  back: false,
  left: false,
  right: false,
  jump: false,
  sprint: false,
  sneak: false
}
const player = {
    entity: {
      position: pos,
      velocity: new Vec3(0, 0, 0),
      onGround: false,
      isInWater: false,
      isInLava: false,
      isInWeb: false,
      isCollidedHorizontally: false,
      isCollidedVertically: false,
      elytraFlying: false,
      yaw: 0,
      pitch: 0
    },
    jumpTicks: 0,
    jumpQueued: false,
    fireworkRocketDuration: 0
  }
const playerState = new PlayerState(player, controls)

while (!player.entity.onGround) {
  // simulate 1 tick of player physic, then apply the result to the player
  physics.simulatePlayer(playerState, world).apply(player)
}

See examples/ for more.

API

Physics

simulatePlayer(playerState, world)

playerState : instance of the PlayerState class
world : interface with a function getBlock(position) returning the prismarine-block at the given position

PlayerState

A player state is an object containing the properties:

Read / Write properties:

pos : position (vec3) of the player entity
vel : velocity (vec3) of the player entity
onGround : (boolean) is the player touching ground ?
isInWater : (boolean) is the player in water ?
isInLava : (boolean) is the player in lava ?
isInWeb : (boolean) is the player in a web ?
isCollidedHorizontally : (boolean) is the player collided horizontally with a solid block ?
isCollidedVertically : (boolean) is the player collided vertically with a solid block ?
elytraFlying : (boolean) is the player elytra flying ?
jumpTicks : (integer) number of ticks before the player can auto-jump again
jumpQueued : (boolean) true if the jump control state was true between the last tick and the current one
fireworkRocketDuration : (number) how many ticks of firework boost are remaining ?

Read only properties:

yaw : (float) the yaw angle, in radians, of the player entity
pitch: (float) the pitch angle, in radians, of the player entity
control : (object) control states vector with properties:
- forward
- back
- left
- right
- jump
- sprint
- sneak

Current Tags

1.8.0 ... latest (a year ago)

prismarine-physics

Usage

API

Physics

simulatePlayer(playerState, world)

PlayerState

Current Tags

22 Versions