/*
===========================================================================
Copyright (C) 2023 the OpenMoHAA team

This file is part of OpenMoHAA source code.

OpenMoHAA source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.

OpenMoHAA source code is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with OpenMoHAA source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/

#include "cg_local.h"
#include "cg_radar.h"

void CG_InitRadar()
{
	int i;

	cg.radarShaders[0] = cgi.R_RegisterShader("textures/hud/radar_allies.tga");
	cg.radarShaders[1] = cgi.R_RegisterShader("textures/hud/radar_axis.tga");

	for (i = 0; i < MAX_CLIENTS; i++)
	{
		cg.radars[i].time = 0;
		cg.radars[i].lastSpeakTime = 0;
	}

	cgi.CL_InitRadar(cg.radars, cg.radarShaders, cg.snap->ps.clientNum);
}

bool CG_InTeamGame(centity_t *ent)
{
	return ent->currentState.solid && cg.clientinfo[ent->currentState.number].team;
}

bool CG_SameTeam(centity_t *ent)
{
	return cg.clientinfo[ent->currentState.number].team == cg.clientinfo[cg.snap->ps.clientNum].team;
}

bool CG_IsTeamGame()
{
	return cgs.gametype >= GT_TEAM;
}

bool CG_ValidRadarClient(centity_t *ent)
{
	if (!cg.snap) {
		return qfalse;
	}

	if (!CG_IsTeamGame()) {
		return false;
	}

	if (!CG_InTeamGame(&cg_entities[cg.snap->ps.clientNum])) {
		return false;
	}

	if (!CG_InTeamGame(ent)) {
		return false;
	}

	return CG_SameTeam(ent);
}

int CG_RadarIcon()
{
	switch (cg.clientinfo[cg.snap->ps.clientNum].team)
	{
	case TEAM_ALLIES:
		return 0;
	default:
	case TEAM_AXIS:
		return 1;
	}
}

void CG_UpdateRadarClient(centity_t* ent)
{
	radarClient_t* radar;

	radar = &cg.radars[ent->currentState.number];
	if (!CG_ValidRadarClient(ent)) {
		radar->time = 0;
		return;
	}

	radar->time = cg.time;
	radar->teamShader = CG_RadarIcon();
	if (cg.snap->ps.clientNum == ent->currentState.number)
	{
		radar->origin[0] = cg.refdef.vieworg[0];
		radar->origin[1] = cg.refdef.vieworg[1];
		radar->axis[0] = cg.refdef.viewaxis[0][0];
		radar->axis[1] = cg.refdef.viewaxis[0][1];
		VectorNormalize2D(radar->axis);
	}
	else
	{
		float axis[2];

		radar->origin[0] = ent->currentState.origin[0];
		radar->origin[1] = ent->currentState.origin[1];
		YawToAxis(ent->currentState.angles[1], axis);

		radar->axis[0] = axis[0];
		radar->axis[1] = axis[1];
		VectorNormalize2D(radar->axis);
	}
}

void CG_ReadNonPVSClient(radarUnpacked_t* radarUnpacked)
{
	radarClient_t* radar;
	float axis[2];

	if (!CG_ValidRadarClient(&cg_entities[radarUnpacked->clientNum])) {
		return;
	}

	radar = &cg.radars[radarUnpacked->clientNum];
	radar->time = cg.time;
	radar->teamShader = CG_RadarIcon();
	// copy origin
	radar->origin[0] = radarUnpacked->x;
	radar->origin[1] = radarUnpacked->y;
	// copy yaw
	YawToAxis(radarUnpacked->yaw, axis);
	radar->axis[0] = axis[0];
	radar->axis[1] = axis[1];
	VectorNormalize2D(radar->axis);
}

void CG_UpdateRadar()
{
	int i;

	for (i = 0; i < MAX_CLIENTS; i++)
	{
		if (cg.radars[i].time)
		{
			if (!CG_ValidRadarClient(&cg_entities[i])) {
				cg.radars[i].time = 0;
			}
		}
	}
}

void CG_RadarClientSpeaks(int num)
{
	if (!CG_ValidRadarClient(&cg_entities[num])) {
		return;
	}

	cg.radars[num].lastSpeakTime = cg.time;
}