/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */
/* If you are missing that file, acquire a complete release at teeworlds.com.                */
#include <engine/textrender.h>
#include <engine/shared/config.h>
#include <game/generated/protocol.h>
#include <game/generated/client_data.h>

#include <game/client/gameclient.h>
#include <game/client/animstate.h>
#include "nameplates.h"
#include "controls.h"

void CNamePlates::RenderNameplate(
	const CNetObj_Character *pPrevChar,
	const CNetObj_Character *pPlayerChar,
	const CNetObj_PlayerInfo *pPlayerInfo
	)
{
	float IntraTick = Client()->IntraGameTick();

	vec2 Position = mix(vec2(pPrevChar->m_X, pPrevChar->m_Y), vec2(pPlayerChar->m_X, pPlayerChar->m_Y), IntraTick);

	bool OtherTeam;

	if (m_pClient->m_aClients[m_pClient->m_Snap.m_LocalClientID].m_Team == TEAM_SPECTATORS && m_pClient->m_Snap.m_SpecInfo.m_SpectatorID == SPEC_FREEVIEW)
		OtherTeam = false;
	else if (m_pClient->m_Snap.m_SpecInfo.m_Active && m_pClient->m_Snap.m_SpecInfo.m_SpectatorID != SPEC_FREEVIEW)
		OtherTeam = m_pClient->m_Teams.Team(pPlayerInfo->m_ClientID) != m_pClient->m_Teams.Team(m_pClient->m_Snap.m_SpecInfo.m_SpectatorID);
	else
		OtherTeam = m_pClient->m_Teams.Team(pPlayerInfo->m_ClientID) != m_pClient->m_Teams.Team(m_pClient->m_Snap.m_LocalClientID);

	float FontSize = 18.0f + 20.0f * g_Config.m_ClNameplatesSize / 100.0f;
	// render name plate
	if(!pPlayerInfo->m_Local)
	{
		float a = 1;
		if(g_Config.m_ClNameplatesAlways == 0)
			a = clamp(1-powf(distance(m_pClient->m_pControls->m_TargetPos[g_Config.m_ClDummy], Position)/200.0f,16.0f), 0.0f, 1.0f);

		const char *pName = m_pClient->m_aClients[pPlayerInfo->m_ClientID].m_aName;
		const char *pClan = m_pClient->m_aClients[pPlayerInfo->m_ClientID].m_aClan;
		float tw = TextRender()->TextWidth(0, FontSize, pName, -1);
		float tw_clan = TextRender()->TextWidth(0, FontSize, pClan, -1);

		vec3 rgb = vec3(1.0f, 1.0f, 1.0f);
		if(g_Config.m_ClNameplatesTeamcolors && m_pClient->m_Teams.Team(pPlayerInfo->m_ClientID))
			rgb = HslToRgb(vec3(m_pClient->m_Teams.Team(pPlayerInfo->m_ClientID) / 64.0f, 1.0f, 0.75f));

		if (OtherTeam)
		{
			TextRender()->TextOutlineColor(0.0f, 0.0f, 0.0f, 0.2f);
			TextRender()->TextColor(rgb.r, rgb.g, rgb.b, g_Config.m_ClShowOthersAlpha / 100.0f);
		}
		else
		{
			TextRender()->TextOutlineColor(0.0f, 0.0f, 0.0f, 0.5f*a);
			TextRender()->TextColor(rgb.r, rgb.g, rgb.b, a);
		}
		if(g_Config.m_ClNameplatesTeamcolors && m_pClient->m_Snap.m_pGameInfoObj && m_pClient->m_Snap.m_pGameInfoObj->m_GameFlags&GAMEFLAG_TEAMS)
		{
			if(pPlayerInfo->m_Team == TEAM_RED)
				TextRender()->TextColor(1.0f, 0.5f, 0.5f, a);
			else if(pPlayerInfo->m_Team == TEAM_BLUE)
				TextRender()->TextColor(0.7f, 0.7f, 1.0f, a);
		}

		TextRender()->Text(0, Position.x-tw/2.0f, Position.y-FontSize-38.0f, FontSize, pName, -1);

		if(g_Config.m_ClNameplatesClan)
			TextRender()->Text(0, Position.x-tw_clan/2.0f, Position.y-FontSize*2-38.0f, FontSize, pClan, -1);

		if(g_Config.m_Debug) // render client id when in debug aswell
		{
			char aBuf[128];
			str_format(aBuf, sizeof(aBuf),"%d", pPlayerInfo->m_ClientID);
			float Offset = g_Config.m_ClNameplatesClan ? FontSize * 3 : FontSize * 2;
			float tw_id = TextRender()->TextWidth(0, FontSize, aBuf, -1);
			TextRender()->Text(0, Position.x-tw_id/2.0f, Position.y-Offset-38.0f, 28.0f, aBuf, -1);
		}

		TextRender()->TextColor(1,1,1,1);
		TextRender()->TextOutlineColor(0.0f, 0.0f, 0.0f, 0.3f);
	}
}

void CNamePlates::OnRender()
{
	if (!g_Config.m_ClNameplates || g_Config.m_ClAntiPingPlayers)
		return;

	for(int i = 0; i < MAX_CLIENTS; i++)
	{
		// only render active characters
		if(!m_pClient->m_Snap.m_aCharacters[i].m_Active)
			continue;

		const void *pInfo = Client()->SnapFindItem(IClient::SNAP_CURRENT, NETOBJTYPE_PLAYERINFO, i);

		if(pInfo)
		{
			RenderNameplate(
				&m_pClient->m_Snap.m_aCharacters[i].m_Prev,
				&m_pClient->m_Snap.m_aCharacters[i].m_Cur,
				(const CNetObj_PlayerInfo *)pInfo);
		}
	}
}