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#include "scenery.hpp"
#include "anim-atlas.hpp"
#include "chunk.hpp"
#include "compat/assert.hpp"
#include "rotation.inl"
#include <algorithm>
namespace floormat {
scenery_proto::scenery_proto() noexcept = default;
scenery_proto::scenery_proto(const std::shared_ptr<anim_atlas>& atlas, const scenery& frame) noexcept :
atlas{atlas}, frame{frame}
{}
scenery_proto& scenery_proto::operator=(const scenery_proto&) noexcept = default;
scenery_proto::scenery_proto(const scenery_proto&) noexcept = default;
scenery_proto::operator bool() const noexcept { return atlas != nullptr; }
scenery_ref::scenery_ref(struct chunk& c, std::size_t i) noexcept :
atlas{c.scenery_atlas_at(i)}, frame{c.scenery_at(i)},
c{&c}, idx{std::uint8_t(i)}
{}
scenery_ref::scenery_ref(const scenery_ref&) noexcept = default;
scenery_ref::scenery_ref(scenery_ref&&) noexcept = default;
struct chunk& scenery_ref::chunk() noexcept { return *c; }
std::uint8_t scenery_ref::index() const noexcept { return idx; }
scenery_ref& scenery_ref::operator=(const scenery_proto& proto) noexcept
{
atlas = proto.atlas;
frame = proto.frame;
return *this;
}
scenery_ref::operator scenery_proto() const noexcept { return { atlas, frame }; }
scenery_ref::operator bool() const noexcept { return atlas != nullptr; }
scenery::scenery(generic_tag_t, const anim_atlas& atlas, rotation r, frame_t frame,
pass_mode passability, bool active, bool interactive,
Vector2b offset, Vector2b bbox_offset, Vector2ub bbox_size) :
frame{frame},
offset{offset},
bbox_offset{rotate_point(bbox_offset, atlas.first_rotation(), r)},
bbox_size{rotate_size(bbox_size, atlas.first_rotation(), r)},
r{r}, type{scenery_type::generic},
passability{passability},
active{active}, interactive{interactive}
{
fm_assert(r < rotation_COUNT);
fm_assert(frame < atlas.group(r).frames.size());
}
scenery::scenery(door_tag_t, const anim_atlas& atlas, rotation r, bool is_open,
Vector2b offset, Vector2b bbox_offset, Vector2ub bbox_size) :
frame{frame_t(is_open ? 0 : atlas.group(r).frames.size()-1)},
offset{offset},
bbox_offset{rotate_point(bbox_offset, atlas.first_rotation(), r)},
bbox_size{rotate_size(bbox_size, atlas.first_rotation(), r)},
r{r}, type{scenery_type::door},
passability{is_open ? pass_mode::pass : pass_mode::blocked},
interactive{true}
{
fm_assert(r < rotation_COUNT);
fm_assert(atlas.group(r).frames.size() >= 2);
}
void scenery_ref::rotate(rotation new_r)
{
c->with_scenery_bbox_update(idx, [&] {
auto& s = frame;
s.bbox_offset = rotate_point(s.bbox_offset, s.r, new_r);
s.bbox_size = rotate_size(s.bbox_size, s.r, new_r);
s.r = new_r;
});
}
bool scenery_ref::can_activate() const noexcept
{
return frame.interactive;
}
void scenery_ref::update(float dt)
{
auto& s = frame;
if (!s.active)
return;
switch (s.type)
{
default:
case scenery_type::none:
case scenery_type::generic:
break;
case scenery_type::door:
fm_assert(atlas);
auto& anim = *atlas;
const auto hz = std::uint8_t(atlas->info().fps);
const auto nframes = (int)anim.info().nframes;
fm_debug_assert(anim.info().fps > 0 && anim.info().fps <= 0xff);
auto delta_ = int(s.delta) + int(65535u * dt);
delta_ = std::min(65535, delta_);
const auto frame_time = int(1.f/hz * 65535);
const auto n = (std::uint8_t)std::clamp(delta_ / frame_time, 0, 255);
s.delta = (std::uint16_t)std::clamp(delta_ - frame_time*n, 0, 65535);
fm_debug_assert(s.delta >= 0);
const std::int8_t dir = s.closing ? 1 : -1;
const int fr = s.frame + dir*n;
s.active = fr > 0 && fr < nframes-1;
if (fr <= 0)
s.passability = pass_mode::pass;
else if (fr >= nframes-1)
s.passability = pass_mode::blocked;
else
s.passability = pass_mode::see_through;
s.frame = (scenery::frame_t)std::clamp(fr, 0, nframes-1);
if (!s.active)
s.delta = s.closing = 0;
break;
}
}
bool scenery_ref::activate()
{
auto& s = frame;
if (!*this || s.active)
return false;
switch (s.type)
{
default:
case scenery_type::none:
case scenery_type::generic:
break;
case scenery_type::door:
fm_assert(s.frame == 0 || s.frame == atlas->info().nframes-1);
s.closing = s.frame == 0;
s.frame += s.closing ? 1 : -1;
s.active = true;
return true;
}
return false;
}
#ifdef __GNUG__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wfloat-equal"
#endif
bool scenery::operator==(const scenery&) const noexcept = default;
#ifdef __GNUG__
#pragma GCC diagnostic pop
#endif
} // namespace floormat
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