#include "type.h"

evader::evader(){}

void evader::initialize(){
  for(int i=0;i<10;i++){
    pastx[i]=x;
    pasty[i]=y;
    }
  predictedx = x;
  predictedy = y;
  }

void evader::predict(){
  double tempx = D.head->x-x;
  double tempy = D.head->y-y;
  if((tempx*tempx+tempy*tempy)< CLOSE_KILL){
    predictedx = x;
    predictedy = y;
    }
  else{
    tempx = D.head->x-predictedx;
    tempy = D.head->y-predictedy;
    if((tempx*tempx+tempy*tempy)< CLOSE_KILL){
      predictedx = x;
      predictedy = y;
      }
    else{
      tempx = pastx[0]-pastx[9];
      tempy = pasty[0]-pasty[9];
      if((tempx*tempx+tempy*tempy) > PRED_STEP){
        predictedx = x+tempx;
        predictedy = y+tempy;
        }
      }
    }
  }

void evader::setx(double a){
  for(int i=8;i>=0;i--){
    pastx[i+1]=pastx[i];
    }
  pastx[0]=a;
  x = a;
 }

void evader::sety(double a){
  for(int i=8;i>=0;i--){
    pasty[i+1]=pasty[i];
    }
  pasty[0] = a;
  y = a;
  }

double evader::getx(){
  return x;
  }

double evader::gety(){
  return y;
  }

void evader::setpt(double a, double b){
  for(int i=8;i>=0;i--){
    pastx[i+1]=pastx[i];
    pasty[i+1]=pasty[i];
    }
  pastx[0] = a;
  pasty[0] = b;
  x = a;
  y = b;
  }