openmohaa/code/cgame/cg_playerstate.c

/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.

This file is part of Quake III Arena source code.

Quake III Arena 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.

Quake III Arena 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 Quake III Arena source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/
//
// cg_playerstate.c -- this file acts on changes in a new playerState_t
// With normal play, this will be done after local prediction, but when
// following another player or playing back a demo, it will be checked
// when the snapshot transitions like all the other entities

#include "cg_local.h"

/*
==============
CG_DamageFeedback
==============
*/
void CG_DamageFeedback( int yawByte, int pitchByte, int damage ) {
	float		left, front, up;
	float		kick;
	int			health;
	float		scale;
	vec3_t		dir;
	vec3_t		angles;
	float		dist;
	float		yaw, pitch;

	// show the attacking player's head and name in corner
	cg.attackerTime = cg.time;

	// the lower on health you are, the greater the view kick will be
	health = cg.snap->ps.stats[STAT_HEALTH];
	if ( health < 40 ) {
		scale = 1;
	} else {
		scale = 40.0 / health;
	}
	kick = damage * scale;

	if (kick < 5)
		kick = 5;
	if (kick > 10)
		kick = 10;

	// if yaw and pitch are both 255, make the damage always centered (falling, etc)
	if ( yawByte == 255 && pitchByte == 255 ) {
		cg.damageX = 0;
		cg.damageY = 0;
		cg.v_dmg_roll = 0;
		cg.v_dmg_pitch = -kick;
	} else {
		// positional
		pitch = pitchByte / 255.0 * 360;
		yaw = yawByte / 255.0 * 360;

		angles[PITCH] = pitch;
		angles[YAW] = yaw;
		angles[ROLL] = 0;

		AngleVectors( angles, dir, NULL, NULL );
		VectorSubtract( vec3_origin, dir, dir );

		front = DotProduct (dir, cg.refdef.viewaxis[0] );
		left = DotProduct (dir, cg.refdef.viewaxis[1] );
		up = DotProduct (dir, cg.refdef.viewaxis[2] );

		dir[0] = front;
		dir[1] = left;
		dir[2] = 0;
		dist = VectorLength( dir );
		if ( dist < 0.1 ) {
			dist = 0.1f;
		}

		cg.v_dmg_roll = kick * left;
		
		cg.v_dmg_pitch = -kick * front;

		if ( front <= 0.1 ) {
			front = 0.1f;
		}
		cg.damageX = -left / front;
		cg.damageY = up / dist;
	}

	// clamp the position
	if ( cg.damageX > 1.0 ) {
		cg.damageX = 1.0;
	}
	if ( cg.damageX < - 1.0 ) {
		cg.damageX = -1.0;
	}

	if ( cg.damageY > 1.0 ) {
		cg.damageY = 1.0;
	}
	if ( cg.damageY < - 1.0 ) {
		cg.damageY = -1.0;
	}

	// don't let the screen flashes vary as much
	if ( kick > 10 ) {
		kick = 10;
	}
	cg.damageValue = kick;
	cg.v_dmg_time = cg.time + DAMAGE_TIME;
	cg.damageTime = cg.snap->serverTime;
}




/*
================
CG_Respawn

A respawn happened this snapshot
================
*/
void CG_Respawn( void ) {
	// no error decay on player movement
	cg.thisFrameTeleport = qtrue;

	// display weapons available
	cg.weaponSelectTime = cg.time;
}

/*
===============
CG_TransitionPlayerState

===============
*/
void CG_TransitionPlayerState( playerState_t *ps, playerState_t *ops ) {
	// check for changing follow mode
	if ( ps->clientNum != ops->clientNum ) {
		cg.thisFrameTeleport = qtrue;
		// make sure we don't get any unwanted transition effects
		*ops = *ps;
	}

	// damage events (player is getting wounded)
	//if ( ps->damageEvent != ops->damageEvent && ps->damageCount ) {
	//	CG_DamageFeedback( ps->damageYaw, ps->damagePitch, ps->damageCount );
	//}

	// respawning - TODO
	//if ( ps->persistant[PERS_SPAWN_COUNT] != ops->persistant[PERS_SPAWN_COUNT] ) {
	//	CG_Respawn();
	//}

	if ( cg.mapRestart ) {
		CG_Respawn();
		cg.mapRestart = qfalse;
	}

	// smooth the ducking viewheight change
	if ( ps->viewheight != ops->viewheight ) {
		cg.duckChange = ps->viewheight - ops->viewheight;
		cg.duckTime = cg.time;
	}
}