Android Open Source - Gamework Variable Reaction

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Back to project page Gamework.

License

The source code is released under:

Apache License

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Java Source Code

package cz.robyer.gamework.scenario.reaction;
//  w  w w  .  ja  va 2 s .co m
import android.util.Log;
import cz.robyer.gamework.scenario.variable.BooleanVariable;
import cz.robyer.gamework.scenario.variable.DecimalVariable;
import cz.robyer.gamework.scenario.variable.Variable;

/**
 * Game reaction which modify value of game variable.
 * @author Robert P?sel
 */
public class VariableReaction extends Reaction {
  public static enum OperatorType {SET, INCREMENT, DECREMENT, MULTIPLY, DIVIDE, NEGATE};
  
  protected String variable;
  protected String value;
  protected OperatorType type;
  
  /** holds Variable object from scenario to optimize access time */
  protected Variable var;
  /** holds value as correct type to optimize use */
  protected Object val;
  
  /**
   * Class constructor.
   * @param id Identificator of this reaction.
   * @param type Type of modification to apply to variable.
   * @param variable Identificator of variable which should be modified.
   * @param value Value which will be used in modification.
   */
  public VariableReaction(String id, OperatorType type, String variable, String value) {
    super(id);
    this.type = type;
    this.variable = variable;
    this.value = value;
  }
  
  /* (non-Javadoc)
   * @see cz.robyer.gamework.scenario.BaseObject#onScenarioLoaded()
   */
  @Override
  public boolean onScenarioLoaded() {
    var = getScenario().getVariable(variable);
    if (var == null)
      Log.e(TAG, String.format("Variable '%s' is null", variable));
    else {
      // prepare corect type of value for optimalization
      if (var instanceof BooleanVariable) {
        val = Boolean.parseBoolean(value);
      } else if (var instanceof DecimalVariable) {
        val = Integer.parseInt(value);
      } else {
        // no known type, use classic string representation
        val = value;
      }
    }
    
    return var != null;
  }

  /* (non-Javadoc)
   * @see cz.robyer.gamework.scenario.reaction.Reaction#action()
   */
  @Override
  public void action() {
    if (var == null) {
      Log.e(TAG, String.format("Variable '%s' is null", variable));
      return;
    }
    
    var.modify(type, val);
  }

}

Java Source Code List