Ben Anderson
117 lines
3.9 KiB
C++
117 lines
3.9 KiB
C++
#include "global.h"
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#include "PlayerAI.h"
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#include "RageUtil.h"
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#include "IniFile.h"
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#include "RageException.h"
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#include "GameState.h"
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#include "PlayerState.h"
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#define AI_PATH "Data/AI.ini"
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struct TapScoreDistribution
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{
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float fPercent[NUM_TAP_NOTE_SCORES];
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TapNoteScore GetTapNoteScore()
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{
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float fRand = randomf(0,1);
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float fCumulativePercent = 0;
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for( int i=0; i<=TNS_MARVELOUS; i++ )
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{
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fCumulativePercent += fPercent[i];
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if( fRand <= fCumulativePercent+1e-4 ) /* rounding error */
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return (TapNoteScore)i;
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}
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ASSERT(0); // the fCumulativePercents must sum to 1.0, so we should never get here!
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return TNS_MARVELOUS;
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}
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};
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static TapScoreDistribution g_Distributions[NUM_SKILL_LEVELS];
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void PlayerAI::InitFromDisk()
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{
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IniFile ini;
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ini.ReadFile( AI_PATH );
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for( int i=0; i<NUM_SKILL_LEVELS; i++ )
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{
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CString sKey = ssprintf("Skill%d", i);
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XNode* pNode = ini.GetChild(sKey);
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if( pNode == NULL )
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RageException::Throw( "AI.ini: '%s' doesn't exist.", sKey.c_str() );
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TapScoreDistribution& dist = g_Distributions[i];
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dist.fPercent[TNS_NONE] = 0;
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pNode->GetAttrValue( "MissWeight", dist.fPercent[TNS_MISS] );
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pNode->GetAttrValue( "BooWeight", dist.fPercent[TNS_BOO] );
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pNode->GetAttrValue( "GoodWeight", dist.fPercent[TNS_GOOD] );
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pNode->GetAttrValue( "GreatWeight", dist.fPercent[TNS_GREAT] );
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pNode->GetAttrValue( "PerfectWeight", dist.fPercent[TNS_PERFECT] );
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pNode->GetAttrValue( "MarvelousWeight", dist.fPercent[TNS_MARVELOUS] );
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float fSum = 0;
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for( int j=0; j<NUM_TAP_NOTE_SCORES; j++ )
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fSum += dist.fPercent[j];
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for( int j=0; j<NUM_TAP_NOTE_SCORES; j++ )
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dist.fPercent[j] /= fSum;
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}
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}
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TapNoteScore PlayerAI::GetTapNoteScore( const PlayerState* pPlayerState )
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{
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if( pPlayerState->m_PlayerController == PC_AUTOPLAY )
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return TNS_MARVELOUS;
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int iCpuSkill = pPlayerState->m_iCpuSkill;
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/* If we're in battle mode, reduce the skill based on the number of modifier attacks
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* against us. If we're in demonstration or jukebox mode with modifiers attached,
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* don't make demonstration miss a lot. */
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if( !GAMESTATE->m_bDemonstrationOrJukebox )
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{
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int iSumOfAttackLevels =
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pPlayerState->m_fSecondsUntilAttacksPhasedOut > 0 ?
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pPlayerState->m_iLastPositiveSumOfAttackLevels :
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0;
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ASSERT_M( iCpuSkill>=0 && iCpuSkill<NUM_SKILL_LEVELS, ssprintf("%i", iCpuSkill) );
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ASSERT_M( pPlayerState->m_PlayerController == PC_CPU, ssprintf("%i", pPlayerState->m_PlayerController) );
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iCpuSkill -= iSumOfAttackLevels*3;
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CLAMP( iCpuSkill, 0, NUM_SKILL_LEVELS-1 );
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}
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TapScoreDistribution& distribution = g_Distributions[iCpuSkill];
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return distribution.GetTapNoteScore();
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}
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/*
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* (c) 2003-2004 Chris Danford
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, and/or sell copies of the Software, and to permit persons to
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* whom the Software is furnished to do so, provided that the above
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* copyright notice(s) and this permission notice appear in all copies of
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* the Software and that both the above copyright notice(s) and this
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* permission notice appear in supporting documentation.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
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* THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
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* INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
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* OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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