/**
 * Copyright (c) 2025 Dominic Masters
 * 
 * This software is released under the MIT License.
 * https://opensource.org/licenses/MIT
 */

#include "direction.h"
#include "assert/assert.h"

float_t directionToAngle(const direction_t dir) {
  switch(dir) {
    case DIRECTION_NORTH: return (M_PI_2);
    case DIRECTION_SOUTH: return -(M_PI_2);
    case DIRECTION_EAST: return 0;
    case DIRECTION_WEST: return (M_PI);
    default: return 0; // Should never happen
  }
}

void directionGetVec2(const direction_t dir, vec2 out) {
  assertNotNull(out, "Output vector cannot be NULL");

  switch(dir) {
    case DIRECTION_NORTH:
      out[0] = 0.0f;
      out[1] = 1.0f;
      break;

    case DIRECTION_SOUTH:
      out[0] = 0.0f;
      out[1] = -1.0f;
      break;

    case DIRECTION_EAST:
      out[0] = 1.0f;
      out[1] = 0.0f;
      break;

    case DIRECTION_WEST:
      out[0] = -1.0f;
      out[1] = 0.0f;
      break;

    default:
      assertUnreachable("Invalid direction");
  }
}