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#include "collision.hpp"
#include "compat/assert.hpp"
#include "src/chunk.hpp"
#include "compat/LooseQuadtree-impl.h"
#include <utility>
namespace floormat {
void collision_bb_extractor::ExtractBoundingBox(const collision_bbox* x, BB* bbox)
{
*bbox = { x->left, x->top, std::int16_t(x->width), std::int16_t(x->height) };
}
collision_iterator::collision_iterator() noexcept : q{nullptr} {}
collision_iterator::collision_iterator(Query* q) noexcept : q{q} {}
collision_iterator::~collision_iterator() noexcept
{
if (q)
while (!q->EndOfQuery())
q->Next();
}
collision_iterator& collision_iterator::operator++() noexcept
{
fm_debug_assert(q != nullptr && !q->EndOfQuery());
q->Next();
return *this;
}
auto collision_iterator::operator++(int) noexcept -> const collision_bbox*
{
fm_debug_assert(q != nullptr && !q->EndOfQuery());
auto* bbox = q->GetCurrent();
fm_debug_assert(bbox != nullptr);
operator++();
return bbox;
}
auto collision_iterator::operator*() const noexcept -> const collision_bbox&
{
return *operator->();
}
auto collision_iterator::operator->() const noexcept -> const collision_bbox*
{
fm_debug_assert(q != nullptr && !q->EndOfQuery());
auto* ptr = q->GetCurrent();
fm_debug_assert(ptr != nullptr);
return ptr;
}
bool collision_iterator::operator==(const collision_iterator& other) const noexcept
{
if (q && !other.q) [[likely]]
return q->EndOfQuery();
else if (!q && !other.q)
return true;
else if (!q)
return other.q->EndOfQuery();
else
return q == other.q;
}
collision_iterator::operator bool() const noexcept
{
return q && !q->EndOfQuery();
}
collision_query::collision_query(collision_query::Query&& q) noexcept : q{std::move(q)} {}
collision_iterator collision_query::begin() noexcept { return collision_iterator{&q}; }
collision_iterator collision_query::end() noexcept { return collision_iterator{nullptr}; }
collision_bbox::operator BB() const noexcept
{
return BB{left, top, (Short)width, (Short)height};
}
bool collision_bbox::intersects(BB bb) const noexcept
{
return BB(*this).Intersects(bb);
}
bool collision_bbox::intersects(collision_bbox bb) const noexcept
{
return BB(*this).Intersects(bb);
}
} // namespace floormat
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