#include "Client.h"
#include "../engine/GameEngine.h"
#include <cmath>

Client* Client::instance;

void Client::start()
{
    GameEngine::start(1024, 620, "Test Game", []()
    {
        Client::instance = new Client();
    }, []() 
    {
        Client::instance->tick();
    }, [](float lag) 
    {
        Client::instance->renderTick(lag);
    });
    delete instance;
}

void Client::stop()
{
    GameEngine::stop();
}


Client::Client() : chunk(0, 0), texture("resources/textures.png")
{    
    //chunk.init();
    
    position.set(0, 0, -2);
    GameEngine::get()->getShader().setCamera(position.getX(), position.getY(), position.getZ(), 0, 0);
    GameEngine::get()->getShader().storeCamera();
    
    GameEngine::get()->getKeyManager().map(KEY_LEFT, GLFW_KEY_A);
    GameEngine::get()->getKeyManager().map(KEY_RIGHT, GLFW_KEY_D);
    GameEngine::get()->getKeyManager().map(KEY_UP, GLFW_KEY_W);
    GameEngine::get()->getKeyManager().map(KEY_DOWN, GLFW_KEY_S);
    GameEngine::get()->getKeyManager().map(KEY_JUMP, GLFW_KEY_SPACE);
    GameEngine::get()->getKeyManager().map(KEY_SNEAK, GLFW_KEY_LEFT_SHIFT);
    GameEngine::get()->getKeyManager().map(KEY_CAM_LEFT, GLFW_KEY_H);
    GameEngine::get()->getKeyManager().map(KEY_CAM_RIGHT, GLFW_KEY_K);
    GameEngine::get()->getKeyManager().map(KEY_CAM_UP, GLFW_KEY_U);
    GameEngine::get()->getKeyManager().map(KEY_CAM_DOWN, GLFW_KEY_J);
}

Client::~Client()
{
}

float oldTicker = 0;
float ticker = 0;

void Client::tick()
{
    oldTicker = ticker;
    ticker += 1;
    if(ticker >= 360)
    {
        oldTicker = 0;
        ticker = 0;
    }
    
    Shader& c = GameEngine::get()->getShader();
    c.storeCamera();
    
    KeyManager& key = GameEngine::get()->getKeyManager();
    
    float factor = 0.125f;
    if(key.isDown(KEY_LEFT))
    {
        position.addMul(c.getLeft(), factor);
    }
    if(key.isDown(KEY_RIGHT))
    {
        position.addMul(c.getRight(), factor);
    }
    if(key.isDown(KEY_UP))
    {
        position.addMul(c.getFront(), factor);
    }
    if(key.isDown(KEY_DOWN))
    {
        position.addMul(c.getBack(), factor);
    }
    if(key.isDown(KEY_JUMP))
    {
        position.addMul(c.getUp(), factor);
    }
    if(key.isDown(KEY_SNEAK))
    {
        position.addMul(c.getDown(), factor);
    }
    
    if(key.isDown(KEY_CAM_LEFT))
    {
        lengthAngle += 2;
    }
    if(key.isDown(KEY_CAM_RIGHT))
    {
        lengthAngle -= 2;
    }
    if(key.isDown(KEY_CAM_UP))
    {
        widthAngle += 2;
    }
    if(key.isDown(KEY_CAM_DOWN))
    {
        widthAngle -= 2;
    }
    
    c.setCamera(position.getX(), position.getY(), position.getZ(), lengthAngle, widthAngle);
}

void Client::renderTick(float lag)
{
    /*GameEngine::getCamera().updateView(lag);
    texture.bind();
    GameEngine::setColorEnabled(false);
    GameEngine::setUseBlending(false);
    GameEngine::setTextureEnabled(true);
    chunk.renderTick(lag);*/
    
    GameEngine::get()->getShader().set2DMode();
    GameEngine::get()->getShader().setToIdentity();
    GameEngine::get()->getShader().translateTo(200, 200, 0);
    GameEngine::get()->getShader().rotateZ(interpolate(lag, oldTicker, ticker));
    GameEngine::get()->getShader().updateModelMatrix();
    GameEngine::get()->getShader().setTextMode();
    string wusi;
    float y = 30;
    wusi = "FPS: " + to_string(GameEngine::get()->getFramesPerSecond());
    y = GameEngine::get()->getDirectRenderer().drawString(30, y, true, wusi);
}