Chris Danford
76 lines
2.0 KiB
C++
76 lines
2.0 KiB
C++
#include "global.h"
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/*
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-----------------------------------------------------------------------------
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Class: PlayerAI
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Desc: See header.
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Copyright (c) 2001-2002 by the person(s) listed below. All rights reserved.
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Chris Danford
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-----------------------------------------------------------------------------
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*/
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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 <math.h>
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struct TapScoreDistribution
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{
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float fCumulativeProbability[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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for( int i=TNS_MISS; i<=TNS_MARVELOUS; i++ )
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if( fRand <= fCumulativeProbability[i] )
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return (TapNoteScore)i;
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ASSERT(0); // the last probability must be 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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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.SetPath( "AI.ini" );
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ini.ReadFile();
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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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if( ini.GetKey(sKey)==NULL )
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RageException::Throw( "AI.ini: '%s' doesn't exist.", sKey.GetString() );
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TapScoreDistribution& dist = g_Distributions[i];
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dist.fCumulativeProbability[TNS_NONE] = 0;
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ini.GetValueF( sKey, "MissCum", dist.fCumulativeProbability[TNS_MISS] );
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ini.GetValueF( sKey, "BooCum", dist.fCumulativeProbability[TNS_BOO] );
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ini.GetValueF( sKey, "GoodCum", dist.fCumulativeProbability[TNS_GOOD] );
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ini.GetValueF( sKey, "GreatCum", dist.fCumulativeProbability[TNS_GREAT] );
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ini.GetValueF( sKey, "PerfectCum", dist.fCumulativeProbability[TNS_PERFECT] );
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dist.fCumulativeProbability[TNS_MARVELOUS] = 1;
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}
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}
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TapNoteScore PlayerAI::GetTapNoteScore( int iCpuSkill, int iSumOfAttackLevels )
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{
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// shouldn't call this unless we're CPU controlled
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ASSERT( iCpuSkill>=0 && iCpuSkill<NUM_SKILL_LEVELS );
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iCpuSkill -= iSumOfAttackLevels;
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CLAMP( iCpuSkill, 0, NUM_SKILL_LEVELS-1 );
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TapScoreDistribution& distribution = g_Distributions[iCpuSkill];
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return distribution.GetTapNoteScore();
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}
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