1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//=============================================================================//
#include "cbase.h"
#include "proxyentity.h"
#include "materialsystem/imaterial.h"
#include "materialsystem/imaterialvar.h"
#include "c_baseobject.h"
#include <KeyValues.h>
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
class CObjectBuildAlphaProxy : public CEntityMaterialProxy
{
public:
CObjectBuildAlphaProxy();
virtual ~CObjectBuildAlphaProxy();
virtual bool Init( IMaterial *pMaterial, KeyValues* pKeyValues );
virtual void OnBind( C_BaseEntity *pC_BaseEntity );
private:
IMaterialVar* m_pAlphaVar;
float buildstart;
float buildend;
};
//-----------------------------------------------------------------------------
// Constructor, destructor
//-----------------------------------------------------------------------------
CObjectBuildAlphaProxy::CObjectBuildAlphaProxy()
{
m_pAlphaVar = 0;
}
CObjectBuildAlphaProxy::~CObjectBuildAlphaProxy()
{
}
//-----------------------------------------------------------------------------
// Init baby...
//-----------------------------------------------------------------------------
bool CObjectBuildAlphaProxy::Init( IMaterial *pMaterial, KeyValues* pKeyValues )
{
bool foundVar;
m_pAlphaVar = pMaterial->FindVar( "$alpha", &foundVar, false );
if( !foundVar )
{
m_pAlphaVar = 0;
}
buildstart = pKeyValues->GetFloat( "buildstart", 1.0f );
buildend = pKeyValues->GetFloat( "buildfinish", 1.0f );
return true;
}
//-----------------------------------------------------------------------------
// Set the appropriate texture...
//-----------------------------------------------------------------------------
void CObjectBuildAlphaProxy::OnBind( C_BaseEntity *pEntity )
{
if( !m_pAlphaVar )
return;
// It needs to be a TF2 C_BaseObject to have this proxy applied
C_BaseObject *pObject = dynamic_cast< C_BaseObject * >( pEntity );
if ( !pObject )
return;
float build_amount = pObject->GetCycle(); //pObject->GetPercentageConstructed();
float frac;
if ( build_amount <= buildstart )
{
frac = 0.0f;
}
else if ( build_amount >= buildend )
{
frac = 1.0f;
}
else
{
// Avoid div by zero
if ( buildend == buildstart )
{
frac = 1.0f;
}
else
{
frac = ( build_amount - buildstart ) / ( buildend - buildstart );
frac = clamp( frac, 0.0f, 1.0f );
}
}
if ( !pObject->IsBuilding() )
{
frac = 1.0f;
}
m_pAlphaVar->SetFloatValue( frac );
}
EXPOSE_INTERFACE( CObjectBuildAlphaProxy, IMaterialProxy, "TFObjectBuildAlpha" IMATERIAL_PROXY_INTERFACE_VERSION );
|