93 lines
2.1 KiB
C++
93 lines
2.1 KiB
C++
/* +------------------------------------------------------+
|
|
____/ \____ /| - Open source game framework licensed to freely use, |
|
|
\ / / | copy, modify and sell without restriction |
|
|
+--\ ^__^ /--+ | |
|
|
| ~/ \~ | | - created for <https://foam.shampoo.ooo> |
|
|
| ~~~~~~~~~~~~ | +------------------------------------------------------+
|
|
| SPACE ~~~~~ | /
|
|
| ~~~~~~~ BOX |/
|
|
+-------------*/
|
|
|
|
#pragma once
|
|
|
|
#include <cstdint>
|
|
#include <iterator>
|
|
|
|
#define GLM_ENABLE_EXPERIMENTAL
|
|
#include "glm/common.hpp"
|
|
#include "glm/gtx/integer.hpp"
|
|
|
|
namespace sb
|
|
{
|
|
|
|
template<typename Container>
|
|
class Selection
|
|
{
|
|
|
|
private:
|
|
|
|
std::uint32_t offset = 0;
|
|
const Container& container;
|
|
|
|
public:
|
|
|
|
Selection(const Container& container) : container(container) {}
|
|
|
|
auto current() const
|
|
{
|
|
auto location = container.begin();
|
|
if (location != container.end())
|
|
{
|
|
std::advance(location, offset);
|
|
return location;
|
|
}
|
|
else
|
|
{
|
|
throw std::out_of_range("No options currently in selection");
|
|
}
|
|
}
|
|
|
|
void next()
|
|
{
|
|
offset = ++offset % container.size();
|
|
}
|
|
|
|
void previous()
|
|
{
|
|
offset = glm::mod(--offset, container.size());
|
|
}
|
|
|
|
void increment(int amount)
|
|
{
|
|
offset = glm::mod(offset + amount, container.size());
|
|
}
|
|
|
|
void beginning()
|
|
{
|
|
offset = 0;
|
|
}
|
|
|
|
void end()
|
|
{
|
|
offset = container.size() - 1;
|
|
}
|
|
|
|
/*!
|
|
* @return true if the selection currently points to the location at the beginning of the container
|
|
*/
|
|
bool at_beginning() const
|
|
{
|
|
return offset == 0;
|
|
}
|
|
|
|
/*!
|
|
* @return true if the selection currently points to the location at the end of the container
|
|
*/
|
|
bool at_end()
|
|
{
|
|
return offset >= container.size() - 1;
|
|
}
|
|
|
|
};
|
|
}
|