#include "settings.h"
#include "hitmarkers.h"

bool Config::Visuals::HitMarkers::Enable = true;
float Config::Visuals::HitMarkers::ExpireTime = 0.5f;
float Config::Visuals::HitMarkers::MarkerSize = 12.f;
float Config::Visuals::HitMarkers::TravelDistance = 24.f;

DamageListener::DamageListener()
{
    if (!Interfaces::GameEventManager->AddListener(this, "player_hurt", false))
        Utilities::Error("Unable to add player_hurt listener.");
    else
        Utilities::Log("GameEvent player_hurt registered successfully.");
}

DamageListener::~DamageListener()
{
    Interfaces::GameEventManager->RemoveListener(this);
}

void DamageListener::FireGameEvent(IGameEvent* event)
{
    if (!strcmp(event->GetName(), "player_hurt"))
        if (Interfaces::Engine->GetPlayerForUserID(event->GetInt("attacker")) == Interfaces::Engine->GetLocalPlayer())
        {
            HitMarker_t temp = { Interfaces::globalVars->curtime + Config::Visuals::HitMarkers::ExpireTime, event->GetInt("dmg_health") };

            if (temp.damage > 0 && temp.damage < 100)
                HitMarkers.push_back(temp);
        }
}

int DamageListener::GetEventDebugID(void)
{
    return EVENT_DEBUG_ID_INIT;
}

void DamageListener::PaintTraverse()
{
    static int width = 0;
    static int height = 0;
    if (height == 0 || width == 0)
        Interfaces::Engine->GetScreenSize(width, height);

    float alpha = 0.f;

    for (size_t i = 0; i < HitMarkers.size(); i++)
    {
        float timeDiff = HitMarkers[i].expireTime - Interfaces::Globals->curtime;

        if (timeDiff < 0.f)
        {
            HitMarkers.erase(HitMarkers.begin() + i);
            continue;
        }

        int moveDist = (int)Config::Visuals::HitMarkers::TravelDistance;

        float ratio = 1.f - (timeDiff / Config::Visuals::HitMarkers::ExpireTime);
        alpha = (timeDiff / Config::Visuals::HitMarkers::ExpireTime) * 2.f;
        Render::Text(width / 2 + 6 + ratio * moveDist / 2, height / 2 + 6 + ratio * moveDist, oldColors::FOOTSTEPS_TEAM.CustomAlpha(alpha), Render::Fonts::tahoma16, std::to_string(HitMarkers[i].damage).c_str());
    }

    if (HitMarkers.size() > 0)
    {
        int lineSize = (int)Config::Visuals::HitMarkers::MarkerSize;
        Render::Line(width / 2 - lineSize / 2, height / 2 - lineSize / 2, width / 2 + lineSize / 2, height / 2 + lineSize / 2, oldColors::WHITE40.CustomAlpha(alpha));
        Render::Line(width / 2 + lineSize / 2, height / 2 - lineSize / 2, width / 2 - lineSize / 2, height / 2 + lineSize / 2, oldColors::WHITE40.CustomAlpha(alpha));
    }
}