(Solved) The Player sprite disappears when the sprite is flipped to face left

[p4nu]

I have made a little different approach with the order of code declaration (I have took the example from official raylib demo source code). Here I begin drawing graphics only when I’m drawing it, but I guess there is some bug left. I just can’t find it.

Here’s the main.cpp:

/******************************************************************************
 * main.cpp
 *
 * Copyright (c) 2023 Panu Valtanen
 ******************************************************************************/

#include "raylib.h"
#include "raymath.h"

int main()
{
  // Initialization
  //----------------------------------------------------------------------------
  // screen setup
  const int screenWidth = 384;
  const int screenHeight = 384;
  InitWindow(screenWidth, screenHeight, "Top Down!");

  // Define world map
  Texture2D worldMap = LoadTexture("nature_tileset/OpenWorldMap24x24.png");
  Vector2 worldMapPosition = {0, 0};
  float worldMapScrollSpeed = 4.f;

  // Define player
  Texture2D player = LoadTexture("characters/knight_idle_spritesheet.png");
  Vector2 playerPosition = {
      screenWidth / 2 - 4.f * (0.5f * player.width / 6),
      screenHeight / 2 - 4.f * (0.5f * player.height)};
  // 1: facing right, -1: facing left
  float playerFacingRightLeft = 1.f;

  SetTargetFPS(60);
  //----------------------------------------------------------------------------

  // Main game loop
  while (!WindowShouldClose())
  {
    // Initialization (reset values)
    //--------------------------------------------------------------------------
    Vector2 moveDirection = {};
    //--------------------------------------------------------------------------

    // Update
    //--------------------------------------------------------------------------
    float deltaTime = GetFrameTime();

    if (IsKeyDown(KEY_A))
    {
      moveDirection.x -= 1.0f;
    }
    if (IsKeyDown(KEY_D))
    {
      moveDirection.x += 1.0f;
    }
    if (IsKeyDown(KEY_W))
    {
      moveDirection.y -= 1.0f;
    }
    if (IsKeyDown(KEY_S))
    {
      moveDirection.y += 1.0f;
    }

    if (Vector2Length(moveDirection) != 0.0f)
    {
      worldMapPosition =
          Vector2Subtract(worldMapPosition,
                          Vector2Scale(
                              Vector2Normalize(moveDirection),
                              worldMapScrollSpeed));
      moveDirection.x < 0.f ? playerFacingRightLeft = -1.f : playerFacingRightLeft = 1.f;
    }

    Rectangle source = {0.f, 0.f, (playerFacingRightLeft * (float)player.width) / 6.f, (float)player.height};
    Rectangle dest = {playerPosition.x, playerPosition.y, source.width * 4, source.height * 4};

    //--------------------------------------------------------------------------

    // Draw
    //--------------------------------------------------------------------------
    BeginDrawing();
    ClearBackground(WHITE);

    DrawTextureEx(worldMap, worldMapPosition, 0, 4, WHITE);
    DrawTexturePro(player, source, dest, Vector2{}, 0.f, WHITE);

    EndDrawing();
    //--------------------------------------------------------------------------
  }

  // De-Initialization
  //----------------------------------------------------------------------------
  UnloadTexture(player);
  UnloadTexture(worldMap);
  CloseWindow();
  //----------------------------------------------------------------------------

  return 0;
}

[p4nu]

Found it: it was this line:

Rectangle dest = {playerPosition.x, playerPosition.y, source.width * 4, source.height * 4};

I should have calculated the rectangle’s width again with this:

Rectangle dest = {playerPosition.x, playerPosition.y, (float)player.width / 6.f * 4, source.height * 4};

[Tuomo_T]

Great work on finding the solution!