// The following code is licensed under Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)
// See: http://creativecommons.org/licenses/by-nc/3.0/
// Credit MUST be given to Saul Rennison and the CSProMod Team.

static ConVar cl_player_shadows("cl_player_shadows", "1", FCVAR_CHEAT, "Enable player shadows", true, 0, true, 1);

ShadowType_t C_BasePlayer::ShadowCastType()
{
	if(cl_player_shadows.GetBool())
		return SHADOWS_SIMPLE; // blob shadows
	
	return SHADOWS_NONE;
}

bool C_BasePlayer::GetShadowCastDirection(Vector *pDirection, ShadowType_t shadowType ) const
{
	// Force player shadows to be straight down
	*pDirection = Vector(0, 0, -1);
	return true;
}

bool C_BasePlayer::ShouldDraw()
{
	return BaseClass::ShouldDraw();
}

static ConVar cl_legs("cl_legs", "1", FCVAR_CHEAT, "Enable or disable player leg rendering", true, 0, true, 1);
static ConVar cl_legs_origin_shift("cl_legs_origin_shift", "-16.5", FCVAR_CHEAT, "Amount in game units to shift the player model relative to the direction the player is facing");
static ConVar cl_legs_clip_height("cl_legs_clip_height", "0", FCVAR_CHEAT, "Amount in game units of the player model to render up to [0 = disable]", true, 0, false, 0);

const Vector& C_BasePlayer::GetRenderOrigin( void )
{
	// If we're not observing this player, or if we're not drawing it at the
	// moment then use the normal absolute origin.
	// NOTE: the GetCurrentlyDrawingEntity check is here to make sure the
	// shadow is rendered from the correct origin
	if(!IsInEye() || view->GetCurrentlyDrawingEntity() != this)
		return BaseClass::GetRenderOrigin();

	// Get the forward vector
	static Vector forward; // static because this method returns a reference
	AngleVectors(GetRenderAngles(), &forward);

	// Shift the render origin by a fixed amount
	forward *= cl_legs_origin_shift.GetFloat();
	forward += GetAbsOrigin();

	return forward;
}

int C_BasePlayer::DrawModel( int flags )
{
	// No need for clipping or render origin shifting if we aren't a local
	// player
	if(!IsInEye())
		return BaseClass::DrawModel(flags);

	// If we aren't drawing legs, return
	if(!cl_legs.GetBool())
		return 0;

	CMatRenderContextPtr context(materials);

	// Don't render above a certain height of the body
	if(cl_legs_clip_height.GetInt() > 0)
	{
		context->SetHeightClipMode(MATERIAL_HEIGHTCLIPMODE_RENDER_BELOW_HEIGHT);
		context->SetHeightClipZ(GetAbsOrigin().z+cl_legs_clip_height.GetFloat());
	}

	// Draw the model
	int nDrawRes = BaseClass::DrawModel(flags);
	
	// Remove height clipping
	context->SetHeightClipMode(MATERIAL_HEIGHTCLIPMODE_DISABLE);

	return nDrawRes;
}