91 lines
2.3 KiB
C++
91 lines
2.3 KiB
C++
/* +------------------------------------------------------+
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____/ \____ /| - Open source game framework licensed to freely use, |
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\ / / | copy, modify and sell without restriction |
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+--\ ^__^ /--+ | |
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| ~/ \~ | | - created for <https://foam.shampoo.ooo> |
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| ~~~~~~~~~~~~ | +------------------------------------------------------+
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| SPACE ~~~~~ | /
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| ~~~~~~~ BOX |/
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+-------------*/
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#pragma once
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#include <cstdint>
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#include <iterator>
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#define GLM_ENABLE_EXPERIMENTAL
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#include "glm/common.hpp"
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#include "glm/gtx/integer.hpp"
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namespace sb
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{
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class Carousel
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{
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private:
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std::uint32_t offset = 0;
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public:
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template<typename Container>
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auto current(Container& container) const
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{
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auto location = container.begin();
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if (location != container.end())
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{
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std::advance(location, offset);
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return location;
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}
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else
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{
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throw std::out_of_range("Container is empty");
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}
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}
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template<typename Container>
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void next(const Container& container)
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{
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offset = ++offset % container.size();
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}
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template<typename Container>
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void previous(const Container& container)
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{
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offset = glm::mod(--offset, container.size());
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}
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template<typename Container>
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void increment(const Container& container, int amount)
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{
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offset = glm::mod(offset + amount, container.size());
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}
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void beginning()
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{
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offset = 0;
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}
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template<typename Container>
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void end(const Container& container)
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{
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offset = container.size() - 1;
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}
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/* Return true if the carousel currently points to the location at the beginning of the container. */
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bool at_beginning() const
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{
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return offset == 0;
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}
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/* Return true if the carousel currently points to the location at the end of the container. */
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template<typename Container>
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bool at_end(const Container& container)
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{
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return offset >= container.size() - 1;
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}
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};
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}
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