humus-old/common/traits/controllable.trait.js

import * as I from 'immutable';

import {Trait} from '@avocado/entity';

// Input handling.
export class Controllable extends Trait {

  initialize() {
    this._inputState = I.Map();
  }

  set inputState(inputState) {
    this._inputState = I.Map(inputState);
  }

  tick(elapsed) {
    const {_inputState: inputState} = this;
    if (0 === inputState.size) {
      this.entity.currentAnimation = 'idle';
      return;
    }
    const movementVector = [0, 0];
    if (inputState.has('MoveToX')) {
      movementVector[0] = inputState.get('MoveToX') / 127;
    }
    if (inputState.has('MoveToY')) {
      movementVector[1] = inputState.get('MoveToY') / 127;
    }
    if (inputState.has('MoveUp')) {
      movementVector[1] -= 1;
    }
    if (inputState.has('MoveRight')) {
      movementVector[0] += 1;
    }
    if (inputState.has('MoveDown')) {
      movementVector[1] += 1;
    }
    if (inputState.has('MoveLeft')) {
      movementVector[0] -= 1;
    }
    if (0 === movementVector[0] && 0 === movementVector[1]) {
      return;
    }
    this.entity.requestMovement(movementVector);
    this.entity.currentAnimation = 'moving';
  }

}