Package Exports

ecctrl
ecctrl/Ecctrl.tsx

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (ecctrl) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Ecctrl Floating Capsule Character Controller

Pmndrs/ecctrl is a simple web based character controller build on react-three-fiber and react-three-rapier. It provides a playground demo where you can experience the following features:

Seamless movement over small obstacles
Enhanced control with floating force incorporating spring and damping forces
Rigidbody character functionality for interaction with the game environment
Customizable ground friction for tailored control
Realistic simulation with applied mass on supporting surfaces
Smooth integration with moving and rotating platforms

How To Use

Basic Controls (CodeSandbox Demo)

npm install ecctrl

import Ecctrl, { EcctrlAnimation } from "ecctrl";

To get started, set up your keyboard map using KeyboardControls. Then, wrap your character model within <Ecctrl>:

/**
 * Keyboard control preset
 */
const keyboardMap = [
  { name: "forward", keys: ["ArrowUp", "KeyW"] },
  { name: "backward", keys: ["ArrowDown", "KeyS"] },
  { name: "leftward", keys: ["ArrowLeft", "KeyA"] },
  { name: "rightward", keys: ["ArrowRight", "KeyD"] },
  { name: "jump", keys: ["Space"] },
  { name: "run", keys: ["Shift"] },
  // Optional animation key map
  { name: "action1", keys: ["1"] },
  { name: "action2", keys: ["2"] },
  { name: "action3", keys: ["3"] },
  { name: "action4", keys: ["KeyF"] },
];

return (
  <>
    ...
    <Physics debug={physics} timeStep="vary">
      {/* Keyboard preset */}
      <KeyboardControls map={keyboardMap}>
        {/* Character Control */}
        <Ecctrl>
          {/* Replace your model here */}
          {/* camExcludeCollision is used to prevent camera collision */}
          <CharacterModel userData={{ camExcludeCollision: true }} />
        </Ecctrl>
      </KeyboardControls>
      ...
    </Physics>
  </>
);

Here are all the default properties you can play with for <Ecctrl>:

// Default properties for Ecctrl
props: {
  children,
  debug: false, // Enable debug mode (require leva package)
  capsuleHalfHeight: 0.35, // Half-height of the character capsule
  capsuleRadius: 0.3, // Radius of the character capsule
  floatHeight: 0.3, // Height of the character when floating
  followLight: false, // Enable follow light mode
  // Follow camera setups
  camInitDis: -5, // Initial camera distance
  camMaxDis: -7, // Maximum camera distance
  camMinDis: -0.7, // Minimum camera distance
  // Base control setups
  maxVelLimit: 2.5, // Maximum velocity limit
  turnVelMultiplier: 0.2, // Turn velocity multiplier
  turnSpeed: 15, // Turn speed
  sprintMult: 2, // Sprint speed multiplier
  jumpVel: 4, // Jump velocity
  jumpForceToGroundMult: 5, // Jump force to ground object multiplier
  slopJumpMult: 0.25, // Slope jump affect multiplier
  sprintJumpMult: 1.2, // Sprint jump multiplier
  airDragMultiplier: 0.2, // Air drag multiplier
  dragDampingC: 0.15, // Drag damping coefficient
  accDeltaTime: 8, // Acceleration delta time
  rejectVelMult: 4, // Reject velocity multiplier
  moveImpulsePointY: 0.5, // Move impulse point Y offset
  camFollowMult: 11, // Camera follow speed multiplier
  // Floating Ray setups
  rayOriginOffest: { x: 0, y: -capsuleHalfHeight, z: 0 }, // Ray origin offset
  rayHitForgiveness: 0.1, // Ray hit forgiveness
  rayLength: capsuleRadius + 2, // Ray length
  rayDir: { x: 0, y: -1, z: 0 }, // Ray direction
  floatingDis: capsuleRadius + floatHeight, // Floating distance
  springK: 1.2, // Spring constant
  dampingC: 0.08, // Damping coefficient
  // Slope Ray setups
  showSlopeRayOrigin: false, // Show slope ray origin
  slopeRayOriginOffest: capsuleRadius, // Slope ray origin offset
  slopeRayLength: capsuleRadius + 3, // Slope ray length
  slopeRayDir: { x: 0, y: -1, z: 0 }, // Slope ray direction
  slopeUpExtraForce: 0.1, // Slope up extra force
  slopeDownExtraForce: 0.2, // Slope down extra force
  // AutoBalance Force setups
  autoBalance: true, // Enable auto-balance
  autoBalanceSpringK: 0.3, // Auto-balance spring constant
  autoBalanceDampingC: 0.02, // Auto-balance damping coefficient
  autoBalanceDampingOnY: 0.02, // Auto-balance damping on Y-axis
  // Animation temporary setups
  animated: false, // Enable animation
  ...props,
}

// Simply change the value by doing this
<Ecctrl maxVelLimit={5} jumpVel={4}>
  <CharacterModel userData={{ camExcludeCollision: true }} />
</Ecctrl>

Apply Character Animations (CodeSandbox Demo)

If you want to apply character animations, prepare the character url and customize the animationSet with your own animation names. Change the Ecctrl property animated to true and wrap your character model inside <EcctrlAnimation> tag:

// Prepare character model url
const characterURL = "./ReplaceWithYourCharacterURL";

// Prepare and rename your character animations here
const animationSet = {
  idle: "Idle",
  walk: "Walk",
  run: "Run",
  jump: "Jump_Start",
  jumpIdle: "Jump_Idle",
  jumpLand: "Jump_Land",
  fall: "Climbing", // This is for falling from high sky
  // Currently support four additional animations
  action1: "Wave",
  action2: "Dance",
  action3: "Cheer",
  action4: "Attack(1h)",
};

return (
  <>
    ...
    <Physics debug={physics} timeStep="vary">
      {/* Keyboard preset */}
      <KeyboardControls map={keyboardMap}>
        {/* Character Control */}
        <Ecctrl animated>
          {/* Character Animations */}
          <EcctrlAnimation
            characterURL={characterURL} // Must have property
            animationSet={animationSet} // Must have property
          >
            {/* Replace your model here */}
            {/* camExcludeCollision is used to prevent camera collision */}
            <CharacterModel userData={{ camExcludeCollision: true }} />
          </EcctrlAnimation>
        </Ecctrl>
      </KeyboardControls>
      ...
    </Physics>
  </>
);