omi-eikyo/src/g_player.c

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

#include <Doominati.h>

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

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

//
// G_Player_applyVelocity
//
static void G_Player_applyVelocity(DGE_Entity ent)
{
   DGE_Point2R 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);

   ent.vx = ent.vx + c * mag * 1.1;
   ent.vy = ent.vy - s * mag * 1.1;

   // TODO: apply animation based on X velocity here
}

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

//
// G_Player_Think
//
DGE_Callback
void G_Player_Think(DGE_Entity ent)
{
   DGE_Object_RefAdd(ent.id);

   for(;;)
   {
      if(ent.health <= 0)
         break;

      G_Player_applyVelocity(ent);

      DGE_Task_Sleep(0, 1);
   }

   DGE_Object_RefSub(ent.id);
}

// EOF