blob: 47c5c34cc72ed445e95c652f29fc6eda5c3804a2 (
plain)
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
|
#pragma once
#include "types.h"
namespace crepe {
class ComponentManager;
/**
* \brief Base class for all components
*
* This class is the base class for all components. It provides a common interface for all
* components.
*/
class Component {
public:
//! Whether the component is active
bool active = true;
/**
* \brief The id of the GameObject this component belongs to
*
* \note Only systems are supposed to use this member, but since friend
* relations aren't inherited this needs to be public.
*/
const game_object_id_t game_object_id;
protected:
/**
* \param id The id of the GameObject this component belongs to
*/
Component(game_object_id_t id);
//! Only ComponentManager can create components
friend class ComponentManager;
// create snapshot
Component(const Component &) = default;
// restore snapshot
virtual Component & operator=(const Component &);
// components are never moved
Component(Component &&) = delete;
virtual Component & operator=(Component &&) = delete;
public:
virtual ~Component() = default;
public:
/**
* \brief Get the maximum number of instances for this component
*
* This method returns -1 by default, which means that there is no limit for the number of
* instances. Concrete components can override this method to set a limit.
*
* \return The maximum number of instances for this component
*/
virtual int get_instances_max() const { return -1; }
};
} // namespace crepe
|