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
|
#ifndef EFFECT_HPP
#define EFFECT_HPP
////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/Graphics.hpp>
#include <cassert>
#include <string>
////////////////////////////////////////////////////////////
// Base class for effects
////////////////////////////////////////////////////////////
class Effect : public sf::Drawable
{
public :
virtual ~Effect()
{
}
static void setFont(const sf::Font& font)
{
s_font = &font;
}
const std::string& getName() const
{
return m_name;
}
void load()
{
m_isLoaded = sf::Shader::isAvailable() && onLoad();
}
void update(float time, float x, float y)
{
if (m_isLoaded)
onUpdate(time, x, y);
}
void draw(sf::RenderTarget& target, sf::RenderStates states) const
{
if (m_isLoaded)
{
onDraw(target, states);
}
else
{
sf::Text error("Shader not\nsupported", getFont());
error.setPosition(320.f, 200.f);
error.setCharacterSize(36);
target.draw(error, states);
}
}
protected :
Effect(const std::string& name) :
m_name(name),
m_isLoaded(false)
{
}
static const sf::Font& getFont()
{
assert(s_font != NULL);
return *s_font;
}
private :
// Virtual functions to be implemented in derived effects
virtual bool onLoad() = 0;
virtual void onUpdate(float time, float x, float y) = 0;
virtual void onDraw(sf::RenderTarget& target, sf::RenderStates states) const = 0;
private :
std::string m_name;
bool m_isLoaded;
static const sf::Font* s_font;
};
#endif // EFFECT_HPP
|
