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Light.cpp
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1 /* Project nGenEx
2  Destroyer Studios LLC
3  Copyright © 1997-2004. All Rights Reserved.
4 
5  SUBSYSTEM: nGenEx.lib
6  FILE: Light.cpp
7  AUTHOR: John DiCamillo
8 
9 
10  OVERVIEW
11  ========
12  Dynamic Light Source
13 */
14 
15 #include "MemDebug.h"
16 #include "Light.h"
17 #include "Scene.h"
18 
19 // +--------------------------------------------------------------------+
20 
21 int Light::id_key = 1;
22 
23 // +--------------------------------------------------------------------+
24 
25 Light::Light(float l, float dl, int time)
26 : id(id_key++), type(LIGHT_POINT), life(time),
27 light(l), dldt(dl), color(255,255,255),
28 active(true), shadow(false), scene(0)
29 { }
30 
31 // +--------------------------------------------------------------------+
32 
33 Light::~Light()
34 { }
35 
36 // +--------------------------------------------------------------------+
37 
38 void
39 Light::Update()
40 {
41  if (dldt < 1.0f)
42  light *= dldt;
43 
44  if (life > 0) life--;
45 }
46 
47 // +--------------------------------------------------------------------+
48 
49 void
50 Light::Destroy()
51 {
52  if (scene)
53  scene->DelLight(this);
54 
55  delete this;
56 }
57 
58 // +--------------------------------------------------------------------+
59 
60 void
61 Light::MoveTo(const Point& dst)
62 {
63  //if (type != LIGHT_DIRECTIONAL)
64  loc = dst;
65 }
66 
67 void
68 Light::TranslateBy(const Point& ref)
69 {
70  if (type != LIGHT_DIRECTIONAL)
71  loc = loc - ref;
72 }