laMonster.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: laMonster.cpp
//
// Copyright (C) 2007-2013 Atanas Laskov, <latanas@gmail.com>
//
#include "stdafx.h"
#include "Core-Level-JR.h"

laTexture laMonster::_texInRange;
laTexture laMonster::_texNPCInRange;

// Constructor
//
laMonster::laMonster(void):
    laFightingCreature()
{
    _dDeltaL = _dDeltaR = M_UNIT;

    // Setup attack indicator
    //
    _IndicatorAttack.setColor(laColor(200,200,200));
    _IndicatorAttack.setSize(M_HPBAR_W, M_HPBAR_H/2);
    _IndicatorAttack.setMaxValue( 1 );

    // Agressive by default
    _bAgressiveMode = M_TRUE;
    enableBattleGUI(M_TRUE);
    enableNPCGUI(M_FALSE);
}

laMonster::~laMonster(void) {
}

// Respawn monster
//
void laMonster::respawn()
{
    laFightingCreature::respawn();

    // Extract creature properties
    //_pSheet->load( getObject()->getChild("rpg-sheet") );
}

// Load from level file
//
void  laMonster::load(class laFileParser *fp)
{
    ERRORLEVEL_BEGIN;
    laFightingCreature::load(fp);

    // Load territory range
    //
    fp->readDouble(&_dDeltaL);
    fp->readDouble(&_dDeltaR);

    _dDeltaL *= M_UNIT;
    _dDeltaR *= M_UNIT;

    // Extract creature properties
    //_pSheet->load( getObject()->getChild("rpg-sheet") );

    // Setup GUI
    //
    _IndicatorHP.setColor(laColor(200,0,0));
    _IndicatorHP.setSize(M_HPBAR_W, M_HPBAR_H);
    _IndicatorHP.setMaxValue( ((rpgSheet_Fighter*)_pSheet)->properties()->nHP_Max );

    if(_texInRange.id()==NULL)
        _texInRange.load("gui\\within_range_marker.png", M_TEX_TMAP);

    if(_texNPCInRange.id()==NULL)
        _texNPCInRange.load("gui\\within_range_marker_NPC.gif"/*, M_TEX_TMAP*/);

    // Disable trail FX for monsters
    _fxTrail.enable(M_FALSE);

    ERRORLEVEL_END;
}

// Execute AI: update percepts & call handlers
//
void laMonster::_execute_ai(laTimer &t)
{
    ERRORLEVEL_BEGIN;
    laPlayer *pPlayer = (laPlayer*)( getLevelObject()->getPlayer() );
    laLine2 ln(pPlayer->getPosition(), _ptPivot);
    double dPlayer = ln.lenght();

    if( (M_ABS(pPlayer->getMonsterDistance() /*- M_PLAYER_ATTACK_RANGE*/) > dPlayer) && isAlive() )
    {
        if( _ptPivot.x() > pPlayer->getPivot()->x() ) pPlayer->setMonsterDistance(dPlayer);
        else pPlayer->setMonsterDistance( -1*dPlayer );
    }

    // Perceive player actions only if on the same level along Y
    //
    if( M_ABS( pPlayer->getPosition().y() - _ptPivot.y() ) < M_UNIT*3 )
    {
        // Check if the player is in contact with the monster
        //
        if( pPlayer->boundingRect().intersecting(boundingRect()) )
        {
            _ai.perceive(P__PLAYER_TOUCHED);
        }

        // Check if the player is commencing an attack
        //
        if( _isInRange(pPlayer, this) && pPlayer->attackIsCharged() &&
            (( (pPlayer->getFaceDirection()<0) && (pPlayer->getPosition().x()>_ptPivot.x()) )
            || ( (pPlayer->getFaceDirection()>0) && (pPlayer->getPosition().x()<_ptPivot.x()) ))    )
        {
            _ai.perceive(P__PLAYER_ATTACKS);
        }

        // Check if the player is in our attack range
        //
        // NOTE: Calculating the attack range only along X;
        // this works better for flying mobs
        //
        if( _isInRange(this, pPlayer) )
        {
            _ai.perceive(P__PLAYER_IN_RANGE);
            _ai.perceive(P__PLAYER_IN_TERRITORY);
        }
        else
        {
            //Check if the player is inside the bounds of our teritory
            //
            if( (pPlayer->getPosition().x() >= (_ptOriginPos.x() - _dDeltaL)) &&
                (pPlayer->getPosition().x() <= (_ptOriginPos.x() + _dDeltaR)) )
            {
                _ai.perceive(P__PLAYER_IN_TERRITORY);
            }
        }
    }

    //Default
    laFightingCreature::_execute_ai(t);

    ERRORLEVEL_END;
}

M_BOOL laMonster::_isInRange(laFightingCreature* pAgressor, laFightingCreature* pTarget)
{
    // NOTE: Calculating the attack range only along X; works better for flying mobs
    // (dPlayer < M_MATTACK_RANGE)

    rpgAttack atk = pAgressor->selectedAttack();

    if( M_ABS(pAgressor->getPosition().x() - pTarget->getPosition().x()) > atk.dRange ) return M_FALSE;
    if( M_ABS(pAgressor->getPosition().y() - pTarget->getPosition().y()) > 1.5 * M_UNIT ) return M_FALSE;

    return M_TRUE;
}

// Draw FX
//
void laMonster::_drawFx_positioned(laRenderer *r)
{
    // Draw monster-specific GUI (in 3D)
    //
    if(isAlive())
    {
        laPoint3 ptCamAng = r->getCameraAngles();

        r->transPush();
        r->transRotate(-1*ptCamAng.y(), laPoint3(0,1,0));       //< Make camera facing - compensate for camera angle
        r->modeDepthBuffer(M_FALSE);

        if(_bEnable_Battle_GUI) _draw_battle_gui(r);
        if(_bEnable_NPC_GUI) _draw_npc_gui(r);

        r->modeDepthBuffer(M_TRUE);
        r->transPop();
    }

    laFightingCreature::_drawFx_positioned(r);
}

// Draw 2D interface
//
void laMonster::drawInterface(laRenderer *r, laPoint3 ptBasePos) {
    laFightingCreature::drawInterface(r, ptBasePos);
}

// Draw battle GUI
//
void laMonster::_draw_battle_gui(laRenderer *r)
{
    // Battle icon
    //
    laPoint3 pos(M_BATTLEICON_SZ/2,  _ptPivot.size.y() + M_HPBAR_HOVER + M_HPBAR_H + M_BATTLEICON_SZ*1.1+ 0.24*M_UNIT);
    pos *= -1;

    r->vquadsMakeXYRect(0, pos, laPoint3(M_BATTLEICON_SZ, M_BATTLEICON_SZ), laPoint2(), laPoint2(1,1));
    _texInRange.use();
    r->styleSet(laColor(255));
    r->vquadsDrawSingle();

    // HP Bar
    //
    pos = laPoint3(M_HPBAR_W/2, _ptPivot.size.y() + M_HPBAR_HOVER + M_HPBAR_H + 0.24*M_UNIT);
    pos *= -1;

    r->modeTexture(M_FALSE);
    _IndicatorHP.value( ((rpgSheet_Fighter*)_pSheet)->properties()->nHP );
    _IndicatorHP.draw(r, pos);

    // Attack charge bar
    //
    if( _ttAttackCharge.isEnabled() || _ttAttack.isEnabled() )
    {
        pos.y( pos.y() + M_UNIT/6.0);
        _IndicatorAttack.value( 1 - _ttAttackCharge.reminder() );
        _IndicatorAttack.draw(r, pos);
    }
}

// Draw NPC GUI
//
void laMonster::_draw_npc_gui(laRenderer *r)
{
    laPoint3 pos(M_BATTLEICON_SZ/2,  _ptPivot.size.y() + M_HPBAR_HOVER + M_HPBAR_H + M_BATTLEICON_SZ*1.1+ 0.24*M_UNIT);
    pos *= -1;

    r->vquadsMakeXYRect(0, pos, laPoint3(M_BATTLEICON_SZ, M_BATTLEICON_SZ), laPoint2(), laPoint2(1,1));
    _texNPCInRange.use();
    r->styleSet(laColor(255));
    r->vquadsDrawSingle();
}