#include "Sprite.h"
#include "EngineCore/Game.h"
#include "Text.h"
#include "EngineFrame/Render/RenderManager.h"

void Sprite::GenerateRenderMatrix() const
{
    Matrix3x2 RenderBuffer = Matrix3x2::Translation(glm::vec2(m_texture->getPos().x, m_texture->getPos().y)) * GetTransformMatrix();

    // 构造OpenGl渲染矩阵
    render_matrix_ = glm::mat4(1.0f);
    // 填充旋转+缩放分量（2D 变换核心，对应 4x4 矩阵左上 2x2 区域）
    render_matrix_[0][0] = RenderBuffer[0]; // _11 → x轴缩放+旋转
    render_matrix_[0][1] = RenderBuffer[1]; // _12 → 影响y轴方向的旋转分量
    render_matrix_[1][0] = RenderBuffer[2]; // _21 → 影响x轴方向的旋转分量
    render_matrix_[1][1] = RenderBuffer[3]; // _22 → y轴缩放+旋转
    // 填充平移分量（对应 4x4 矩阵最后一行前两列，z轴平移为0）
    render_matrix_[3][0] = RenderBuffer[4]; // _31 → x方向平移（世界坐标）
    render_matrix_[3][1] = RenderBuffer[5]; // _32 → y方向平移（世界坐标）
}

void Sprite::Init()
{
    SetSize(m_texture->getSize());
}

void Sprite::SetTexture(RefPtr<Texture> texture)
{
    m_texture = texture;
    Init();
}

Sprite::Sprite(std::string imgPath, int Index)
{
    this->imgPath = imgPath;
    this->Index = Index;
    m_texture = new Texture();
    m_texture->Init(imgPath, Index);
    Init();
}

Sprite::Sprite(std::string PngPath)
{
    m_texture = new Texture();
    m_texture->Init(PngPath);
    Init();
}

Sprite::~Sprite()
{
}

RefPtr<Texture> Sprite::GetTexture()
{
    return m_texture;
}

void Sprite::OnRender()
{
    if (!m_texture || !IsVisible())
        return;

    RenderManager *renderer = Game::GetInstance().GetRenderer();
    if (this->_BlendMode != NONE)
    {
        renderer->SetBlendMode(this->_BlendMode);
    }
    renderer->DrawTexture(m_texture);
    if (this->_BlendMode != NONE)
    {
        renderer->SetBlendMode(NONE);
    }
}