laLevel__draw_anim.cpp

/*

Jump'n'Run Engine
http://www.atanaslaskov.com/jnr/

BSD LICENSE
Copyright (c) 2007-2013, Atanas Laskov
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL ATANAS LASKOV BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

//
// FILE: laLevel.cpp
//
// This class represents the entire level; Each level is
// composed of several sequential segments, arragned along the X
// axis; Segments are organized as a list of laSecment objects
//
// The level object manages this list, as well as dynamic object
// and the tileset object (laTitleset)
//
// Copyright (C) 2007-2013 Atanas Laskov, <latanas@gmail.com>
//
#include "stdafx.h"
#include "Core-Level-JR.h"
#include "laStagesJR.h"

void laLevel::drawSky(laRenderer *r) {
    double dOldFilter = r->modeBlendFilter(0);      // get rid of the default GUI alpha filter for the sky
    _pTileSet->getSky()->draw(r);
    r->modeBlendFilter(dOldFilter);
}

void laLevel::drawInterface(laRenderer *r, laPoint3 ptBasePos) {
    ERRORLEVEL_BEGIN;

    for(unsigned i=0; i<_nObjCnt; i++)
        _arObjects[i]->drawInterface(r, ptBasePos);

    ERRORLEVEL_END;
}

void laLevel::draw(laRenderer *r, laSegment* pfirst, unsigned nSegments)
{
    ERRORLEVEL_BEGIN;
    PROFILE_REN(laLevel_draw);
    ASSERT(pfirst, "Nil first segment");
    ASSERT(nSegments, "Zero semgnets to draw, must be at least one");
    static laSegment *ps;
    static unsigned n;

    r->transPush();
    _setup_scene(r);
    getTS()->getBackgroundElement()->drawGeometry(r);
    _scroll_view(r);

    // Pass 1 - Background, Terrain, Object geometry
    //
    ps = pfirst; n = nSegments;
    _draw_pass_1( r );

    laPoint3 ofs1(  (ps->_nSegmentIndex)*M_UNIT*M_SEGW, 0, 0 ), ofs( M_UNIT*M_SEGW, 0, 0 );
    r->transPush();
    r->transTranslate( ofs1 );

    do{
        getTS()->getElement( ps->getBackgroundElement() )->drawGeometry(r, 0);
        ps->drawTerrain(r);
        r->transTranslate( ofs );
        ps = ps->next();
    } while( ps && (--n) );

    r->transPop();

    // Pass 1a - Object geometry
    // NOTE: Fog and vtex should be disabled; Some of the light setup could be different
    //
    ps = pfirst; n = nSegments;
    _draw_pass_1a( r );

    do{
        ps->drawObjects(r);
        ps = ps->next();
    } while( ps && (--n) );

    // Pass 2 - Fx, shadows, etc. pransparent stuff
    //
    ps = pfirst; n = nSegments;
    _draw_pass_2( r );

    do{
        // NOTE: Can't really Translate segments here, because objects are also drawn in the same call
        // and they are not positioned on segment boundaries
        //
        laPoint3 pos( (ps->_nSegmentIndex)*M_UNIT*M_SEGW, 0, 0 );
        r->transPush();
        r->transTranslate(pos);
        getTS()->getElement( ps->getBackgroundElement() )->drawFx(r);
        r->transPop();
        ps->drawFx(r, pos);
        ps = ps->next();
    } while( ps && (--n) );

    r->transPop();
    getTS()->getBackgroundElement()->drawFx(r);

    ERRORLEVEL_END;
}

void laLevel::_setup_scene(laRenderer *r)
{
    // Directional light
    //
    r->lightMakeSunlight(0,_pTileSet->getLightElement()->getPoint("light-vector"));

    r->lightAmbient(0, _pTileSet->getLightElement()->getColor("light-ambient") );
    r->lightDiffuse(0, _pTileSet->getLightElement()->getColor("light-diffuse") );
    r->lightSpecular(0, _pTileSet->getLightElement()->getColor("light-specular") );

    // Secondary light source follows the player
    // NOTE: Pre-renderend terrain cant use this?
    //
    /*double dZOfs = terrainZOffset(getPlayer()->getPosition().x() / M_UNIT ) + 4*M_UNIT;
    double dAng = terrainAngle(getPlayer()->getPosition().x() / M_UNIT );

    laPoint3 o(0, -1*M_UNIT, dZOfs);
    laPoint3 v(-M_UNIT*sin(dAng), 1*M_UNIT, -M_UNIT*cos(dAng));
    r->lightMakeProjector(1, o,v, 360);

    r->lightAmbient(1, laColor(0,0,0));
    r->lightDiffuse(1,  _pTileSet->getLightElement()->getColor("light-spotlight") );
    r->lightSpecular(1, _pTileSet->getLightElement()->getColor("light-spotlight") );
    r->lightAttenuation(1, 4*M_UNIT);
    r->drawLine( o, o + v );*/
}

// Pass 1 - Terrain
//
void laLevel::_draw_pass_1( laRenderer *r )
{
    PROFILE_REN(laLevel__draw_pass_1);

    r->modeLight(M_TRUE);

    // Set a blend filter for mobs and other objects that have transparent areas in the texture
    // This prevents some blending problems
    // NOTE: This is off for modeWorld by default
    //
    r->modeBlendFilter(0.15);

    // Setup noise/defect texture and style to white
    //
    r->vtex(_pNoiseTex, getTS()->getBackgroundElement()->getDouble("terrain-noise-scale"));
    r->styleSet( laColor(255,255,255,255) );
    r->modeOutline( laOutline(M_FALSE) );

    // Fog
    //
    laElement *pef = _pTileSet->getFogElement();

    r->modeFog(M_TRUE);
    r->fogColor( pef->getColor("fog-color") );
    r->fogRange( pef->getDouble("foreground-fog-near")*M_UNIT ,pef->getDouble("foreground-fog-far")*M_UNIT);
}

// Pass 1a - Objects
//
void laLevel::_draw_pass_1a( laRenderer *r )
{
    PROFILE_REN(laLevel__draw_pass_1a);

    r->modeFog(M_FALSE);
    r->vtex(NULL);
    r->lightAmbient(0, getTS()->getLightElement()->getColor("light-ambient-obj"));  // NOTE: Obj are brigter
}

void laLevel::_draw_pass_2( laRenderer *r )
{
    PROFILE_REN(laLevel__draw_pass_2);

    r->modeLight(M_FALSE);
    r->modeOutline( laOutline(M_FALSE) );

    // Blend iflter is off by default for drawing the Fx
    // NOTE: Particle Fx set and restore a custom value where needed
    //
    double dOldFIlter = r->modeBlendFilter(0);
    //r->modeBlendFilter(dOldFIlter);
}

// Animate a segment range
//
//void laLevel::animate(laTimer &t, unsigned index, unsigned nleft, unsigned nright)
void laLevel::animate(laTimer &t, laSegment* pfirst, unsigned nSegments)
{
    ERRORLEVEL_BEGIN;
    PROFILE_ANIM(laLevel_animate);
    ASSERT(pfirst, "Nil first segment");
    ASSERT(nSegments, "Zero semgnets to animate, must be at least one");

    laSegment *ps = pfirst;

    do{
        ps->animate(t);
        ps = ps->next();
    } while( ps && (--nSegments) );

    // Animate the tileset
    getTS()->animate(t);

    ERRORLEVEL_END;
}