hitmarkers.cpp

#include "hitmarkers.h"

bool Settings::ESP::Hitmarker::enabled = false;
bool Settings::ESP::Hitmarker::enemies = false;
bool Settings::ESP::Hitmarker::allies = false;
ColorVar Settings::ESP::Hitmarker::color = ImColor(240, 10, 10, 255);
int Settings::ESP::Hitmarker::duration = 2000;
int Settings::ESP::Hitmarker::size = 16;
int Settings::ESP::Hitmarker::innerGap = 5;
bool Settings::ESP::Hitmarker::Damage::enabled = false;

// int - damage dealt, long - timestamp
std::vector<std::pair<int, long>> damages;
long lastHitmarkerTimestamp = 0;

void Hitmarkers::Paint()
{
	if (!Settings::ESP::enabled || !Settings::ESP::Hitmarker::enabled)
		return;

	if (!engine->IsInGame())
		return;

	C_BasePlayer* localplayer = (C_BasePlayer*) entityList->GetClientEntity(engine->GetLocalPlayer());
	if (!localplayer)
		return;

	if (!localplayer->GetAlive())
		return;

	int duration = Settings::ESP::Hitmarker::duration;
	long now = Util::GetEpochTime();

	long diff = lastHitmarkerTimestamp + duration - now;
	if (diff <= 0)
		return;

	int width, height;
	engine->GetScreenSize(width, height);

	Color color = Color::FromImColor(Settings::ESP::Hitmarker::color.Color());
	color.a = std::min(color.a, (int)(diff * color.a / duration * 2));

	int sides[4][2] = { {-1, -1}, {1, 1}, {-1, 1}, {1, -1} };
	for (auto& it : sides)
		Draw::Line(width / 2 + (Settings::ESP::Hitmarker::innerGap * it[0]), height / 2 + (Settings::ESP::Hitmarker::innerGap * it[1]), width / 2 + (Settings::ESP::Hitmarker::size * it[0]), height / 2 + (Settings::ESP::Hitmarker::size * it[1]), color);

	if (!Settings::ESP::Hitmarker::Damage::enabled)
		return;

	float textHeight = Draw::GetTextSize("[cool]", esp_font).y;

	for (unsigned int i = 0; i < damages.size(); i++)
	{
		long timestamp = damages[i].second;
		long hitDiff = timestamp + duration - now;

		if (hitDiff <= 0)
		{
			damages.erase(damages.begin() + i);
			continue;
		}

		Vector2D pos = Vector2D(
				width / 2 + Settings::ESP::Hitmarker::size + 4,
				height / 2 - Settings::ESP::Hitmarker::size - textHeight * i + 4
		);

		int damage = damages[i].first;
		std::string damageStr = '-' + std::to_string(damage);

		color.a = Color::FromImColor(Settings::ESP::Hitmarker::color.Color()).a;
		color.a = std::min(color.a, (int)(hitDiff * color.a / duration * 2));

		Draw::Text(pos, damageStr.c_str(), esp_font, color);
	}
}

void Hitmarkers::FireGameEvent(IGameEvent* event)
{
	if (!Settings::ESP::Hitmarker::enabled)
		return;

	if (!engine->IsInGame())
		return;

	if (strcmp(event->GetName(), "player_hurt") != 0)
		return;

	int hurt_player_id = event->GetInt("userid");
	int attacker_id = event->GetInt("attacker");

	if (engine->GetPlayerForUserID(hurt_player_id) == engine->GetLocalPlayer())
		return;

	// TODO: show hitmarks while spectating?
	if (engine->GetPlayerForUserID(attacker_id) != engine->GetLocalPlayer())
		return;

	C_BasePlayer* localplayer = (C_BasePlayer*) entityList->GetClientEntity(engine->GetLocalPlayer());
	if (!localplayer)
		return;

	C_BasePlayer* hurt_player = (C_BasePlayer*) entityList->GetClientEntity(engine->GetPlayerForUserID(hurt_player_id));
	if (!hurt_player)
		return;

	if (hurt_player->GetTeam() == localplayer->GetTeam() && !Settings::ESP::Hitmarker::allies)
		return;

	if (hurt_player->GetTeam() != localplayer->GetTeam() && !Settings::ESP::Hitmarker::enemies)
		return;

	long now = Util::GetEpochTime();
	lastHitmarkerTimestamp = now;
	damages.insert(damages.begin(), std::pair<int, long>(event->GetInt("dmg_health"), now));
}