//spycams.c
void drawGrenadeCam() {
	vec3_t angles, forward, viewpos;

	trajectory_t grenadeTrajectory;
	grenadeTrajectory.trType = TR_GRAVITY;
	grenadeTrajectory.trTime = eth.cg_time;
	VectorCopy(eth.muzzle, grenadeTrajectory.trBase);
	VectorCopy(grenadeTrajectory.trBase, viewpos);

	VectorCopy(eth.cg_snap->ps.viewangles, angles);
	AngleVectors(angles, forward, NULL,NULL);
	viewpos[2] += eth.cg_snap->ps.viewheight;
	VectorMA(viewpos, 32, forward, viewpos);
	VectorScale(forward, 2000, forward);

	VectorCopy(forward, grenadeTrajectory.trDelta);
	SnapVector(grenadeTrajectory.trDelta);

	// Calculate Gre impact
	int timeOffset = 0;
	trace_t grenadeTrace;
	vec3_t grenadeImpact;
	VectorCopy(grenadeTrajectory.trBase, grenadeImpact);
	#define TIME_STEPP 50
	int maxTime = 2000;
	int totalFly = 0;

	while (timeOffset < maxTime) {
		vec3_t nextPos;
		timeOffset += TIME_STEPP;
		totalFly += TIME_STEPP;

		eth.BG_EvaluateTrajectory(&grenadeTrajectory, eth.cg_time + timeOffset, nextPos, qfalse, 0);
		eth.CG_Trace(&grenadeTrace, grenadeImpact, 0, 0, nextPos, eth.cg_snap->ps.clientNum, MASK_MISSILESHOT);

		// check for hit 
		if (grenadeTrace.startsolid || grenadeTrace.fraction != 1) {
			// When a nade flies for over 750ms and hits something, it'll explode
			if (totalFly > 350)
				break;

			// calculate reflect angle (forward axis)
			int hitTime = eth.cg_time + totalFly - TIME_STEPP + TIME_STEPP * grenadeTrace.fraction;
			eth_BG_EvaluateTrajectoryDelta(&grenadeTrajectory, hitTime, grenadeTrajectory.trDelta, qfalse, 0);
			float dot = DotProduct(grenadeTrajectory.trDelta, grenadeTrace.plane.normal);
			VectorMA(grenadeTrajectory.trDelta, -2*dot, grenadeTrace.plane.normal, grenadeTrajectory.trDelta);

			VectorScale(grenadeTrajectory.trDelta, 0.15, grenadeTrajectory.trDelta);

			if (grenadeTrace.surfaceFlags == 0)
				VectorScale(grenadeTrajectory.trDelta, 0.5, grenadeTrajectory.trDelta);

			// calc new max time and reset trTime
			maxTime -= timeOffset;
			timeOffset = 0;
			grenadeTrajectory.trTime = eth.cg_time;

			// new base origins 
			VectorCopy(grenadeTrace.endpos, grenadeTrajectory.trBase);
			
			SnapVector(grenadeTrajectory.trDelta);
			SnapVector(grenadeTrajectory.trBase);
		} else {
			VectorCopy(nextPos, grenadeImpact);
       		#define POINT_SIZE 2
			int x, y;
       		if (worldToScreen(nextPos, &x, &y)) {
		  		if (isVisible(nextPos))
					drawFillRect(x - (POINT_SIZE / 2), y - (POINT_SIZE / 2), POINT_SIZE, POINT_SIZE, colorGreen);
				else 
					drawFillRect(x - (POINT_SIZE / 2), y - (POINT_SIZE / 2), POINT_SIZE, POINT_SIZE, colorBlue);
			}
		}
	}

	// Set the view
	refdef_t camRefDef;
	// fov
	camRefDef.fov_x = 80;
	camRefDef.fov_y = 80;
	// origin
	VectorCopy(grenadeImpact, camRefDef.vieworg);
	camRefDef.vieworg[ROLL] += seth.value[VAR_GRENADECAM_H];		// Up the cam
	// angle
	vec3_t camAngle;
	VectorCopy(eth.cg_refdefViewAngles, camAngle);
	camAngle[PITCH] = 80;	// Look down
	AnglesToAxis(camAngle, camRefDef.viewaxis);

	// Draw the grenadecam
	drawSpyCam(10, 10, 180, 200, &camRefDef, eth.enemyMortarShader, eth.friendMortarShader, qtrue);

	// Draw impact time	
	char str[128];
	sprintf(str, "^2%.1f ^3s", (float)totalFly / 1000.0f);
	drawText(10 + (250 - sizeTextWidth(0.19f, str, &eth.fontVariable)) / 2, 10 + 250 - 15, 0.19f, str, colorWhite, qfalse, qtrue, &eth.fontVariable);
}

//engine.c
                                case WP_GRENADE_PINEAPPLE:
				case WP_GRENADE_LAUNCHER:
					if (seth.value[VAR_GRENADECAM])
						drawGrenadeCam();
					break;

//menu.h
	VAR_GRENADECAM,
	VAR_GRENADECAM_H,
//menu.c
seth.vars[VAR_GRENADECAM] = (ethVars_t) { "Show grenade cam", qfalse, "grenadecam", CAT_SPYCAM, qfalse,
		{ { "Off", qfalse }, { "On", qtrue } } };
	seth.vars[VAR_GRENADECAM_H] = (ethVars_t) { "Grenade cam height", 500.0f, "grenadecam_h", CAT_SPYCAM, qfalse,
		{ { "300", 300.0f }, { "400", 400.0f }, { "500", 500.0f }, { "600", 600.0f }, { "800", 800.0f }, { "900", 900.0f }, { "1000", 1000.0f } } };