// Copyright © 2017 Project Golan, all rights reserved.
// See COPYING for more information.
#define _GNU_SOURCE // Required for sincos(3). See feature_test_macros(7)
#include "g_player.h"

#include "g_stage.h"
#include "g_missile.h"
#include "m_math.h"
#include "m_str.h"

#include <Doominati.h>

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

// Extern Objects ------------------------------------------------------------|

int G_Player_Count;

// Static Functions ----------------------------------------------------------|

//
// G_Player_applyVelocity
//
static void G_Player_applyVelocity(G_enttype const *ty, G_player th)
{
   DGE_Point3R ax = DGE_Input_GetAxis(1);
   accum vx = (accum)ax.x, vy = (accum)ax.y;

   float mag = sqrtf(vx * vx + vy * vy);
   float ang = atan2f(vy, vx);
   float s, c;

   sincosf(ang, &s, &c);

   if(mag >  1) mag =  1;
   if(mag < -1) mag = -1;

   th.vx = th.vx + c * mag * 5;
   th.vy = th.vy - s * mag * 5;

        if(th.vx  < 0) th.setAnim(ty->getAnim("Left"));
   else if(th.vx  > 0) th.setAnim(ty->getAnim("Righ"));
   else if(th.lvx < 0) th.setAnim(ty->getAnim("FLef"));
   else if(th.lvx > 0) th.setAnim(ty->getAnim("FRig"));

   th.lvx = th.vx;
}

// Extern Functions ----------------------------------------------------------|

//
// G_Player_Think
//
DGE_Callback
void G_Player_Think(G_enttype const *ty, unsigned id)
{
   G_player   th   = {id};
   G_renderth shot = {DGE_RenderThinker_Create(0)};

   shot.rsx = 30;
   shot.rsy = 24;

   th.lives = 5;

   th.setAnim(ty->getAnim("Idle"));

   DGE_Object_RefAdd(id);
   DGE_Object_RefAdd(shot.id);

   while(th.health > 0)
   {
      G_Player_applyVelocity(ty, th);

      if(G_Time < 70)
         th.y = th.y + log(G_Time / 70.0) * 0.7hk;

      else if(th.nextfire < G_Time)
      {
         shot.fsetAnim(G_ObjDef_GetAnim("PlayerShot"));
         G_Missile_Fire(missile_p_basicL, th.id, -18, -7, 0, 0);
         G_Missile_Fire(missile_p_basicR, th.id, +18, -7, 0, 0);
         th.nextfire = G_Time + 3;
      }

      shot.x = th.x;
      shot.y = th.y - 20;
      shot.z = th.z;

      shot.animate();
      th  .animate();

      DGE_Task_Sleep(0, 1);
   }

   DGE_Object_RefSub(id);
   DGE_Object_RefSub(shot.id);

   DGE_Thinker_Unlink(shot.id);
}

// EOF