SwitchGame/source/EngineFrame/Render/Texture.cpp

#include "EngineFrame/Render/Texture.h"
#include "EngineCore/Asset_ImagePack.h"
#include "EngineCore/Game.h"
#include "Texture.h"

Texture::Texture()
{
}

Texture::Texture(std::string PngPath)
{
    SDL_Surface *surface = IMG_Load(PngPath.c_str());
    if (!surface)
    {
        SDL_Log("无法加载图片: %s", SDL_GetError());
        return;
    }

    m_texture = SDL_CreateTextureFromSurface(Game::GetInstance().GetRenderer(), surface);
    if (!m_texture)
    {
        SDL_Log("无法创建纹理: %s", SDL_GetError());
        SDL_FreeSurface(surface); // 记得释放surface
        return;
    }

    this->TextureSize.width = surface->w;
    this->TextureSize.height = surface->h;
    this->TextureFramepos.width = surface->w;
    this->TextureFramepos.height = surface->h;
    SDL_FreeSurface(surface);
}

Texture::Texture(std::string imgPath, int Index)
{
    Asset_ImagePack::IMG *Info = Asset_ImagePack::GetInstance().GetIMG(imgPath);
    if (Info->lpImgName == "sprite/interface/base.img")
        return;
    Asset_ImagePack::ImgInfo &Buf = Info->lp_lplist[Index];

    m_texture = SDL_CreateTexture(
        Game::GetInstance().GetRenderer(),
        SDL_PIXELFORMAT_ARGB8888, // 匹配RGBA数据格式
        SDL_TEXTUREACCESS_STREAMING,
        Buf.Width, Buf.Height);
    if (!m_texture)
    {
        SDL_Log("纹理创建失败: %s", SDL_GetError());
    }
    int pitch = Buf.Width * 4;
    SDL_UpdateTexture(m_texture, NULL, Buf.PNGdata, pitch);
    SDL_SetTextureBlendMode(m_texture, SDL_BLENDMODE_BLEND);

    this->TexturePos.x = Buf.Xpos;
    this->TexturePos.y = Buf.Ypos;
    this->TextureSize.width = Buf.Width;
    this->TextureSize.height = Buf.Height;
    this->TextureFramepos.width = Buf.FrameXpos;
    this->TextureFramepos.height = Buf.FrameYpos;
}

Texture::~Texture()
{
    SDL_DestroyTexture(m_texture);
}

SDL_Texture *Texture::GetTexture()
{
    return m_texture;
}

void Texture::SetBlendMode(SDL_BlendMode blendMode)
{
    SDL_SetTextureBlendMode(m_texture, blendMode);
}

SDL_BlendMode Texture::GetBlendMode()
{
    SDL_BlendMode blendMode;
    SDL_GetTextureBlendMode(m_texture, &blendMode);
    return blendMode;
}