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#include "../tests-private.hpp"
#include "compat/limits.hpp"
#include "compat/shared-ptr-wrapper.hpp"
#include "editor/app.hpp"
#include "src/world.hpp"
#include "src/critter.hpp"
#include "src/point.inl"
#include "src/anim-atlas.hpp"
#include "src/nanosecond.hpp"
#include "floormat/main.hpp"
#include "../imgui-raii.hpp"
#include <mg/Functions.h>
namespace floormat::tests {
using namespace floormat::imgui;
namespace {
struct step_s
{
uint32_t count;
Vector2b direction;
};
constexpr step_s next_stepʹ(Vector2i vec_in)
{
const auto vec = Vector2ui(Math::abs(vec_in));
const auto signs = Vector2b(Math::sign(vec_in));
if (vec.x() == vec.y())
return { vec.x(), Vector2b{1, 1} * signs };
else if (vec.y() == 0)
return { vec.x(), Vector2b{1, 0} * signs };
else if (vec.x() == 0)
return { vec.y(), Vector2b{0, 1} * signs };
else
{
uint32_t major_idx, minor_idx;
if (vec.x() > vec.y())
{
major_idx = 0;
minor_idx = 1;
}
else
{
major_idx = 1;
minor_idx = 0;
}
const auto major = vec[major_idx], minor = vec[minor_idx];
const auto num_axis_aligned = (uint32_t)Math::abs((int)major - (int)minor);
auto axis_aligned = Vector2b{};
axis_aligned[major_idx] = 1;
return { num_axis_aligned, axis_aligned * signs };
}
}
constexpr rotation dir_from_step(step_s step)
{
if (step.direction.isZero()) [[unlikely]]
return rotation_COUNT;
auto x = step.direction.x() + 1;
auto y = step.direction.y() + 1;
fm_debug_assert((x & 3) == x && (y & 3) == y);
auto val = x << 2 | y;
switch (val)
{
using enum rotation;
case 0 << 2 | 0: /* -1 -1 */ return NW;
case 0 << 2 | 1: /* -1 0 */ return W;
case 0 << 2 | 2: /* -1 1 */ return SW;
case 1 << 2 | 0: /* 0 -1 */ return N;
case 1 << 2 | 1: /* 0 0 */ return rotation_COUNT;
case 1 << 2 | 2: /* 0 1 */ return S;
case 2 << 2 | 0: /* 1 -1 */ return NE;
case 2 << 2 | 1: /* 1 0 */ return E;
case 2 << 2 | 2: /* 1 1 */ return SE;
default: return rotation_COUNT;
}
}
struct pending_s
{
point dest;
bool has_value : 1 = false;
};
struct pf_test final : base_test
{
pending_s current;
~pf_test() noexcept override = default;
bool handle_key(app& a, const key_event& e, bool is_down) override;
bool handle_mouse_click(app& a, const mouse_button_event& e, bool is_down) override;
bool handle_mouse_move(app& a, const mouse_move_event& e) override;
void draw_overlay(app& a) override;
void draw_ui(app& a, float menu_bar_height) override;
void update_pre(app& a, const Ns& dt) override;
void update_post(app&, const Ns&) override {}
};
constexpr step_s next_step(point from, point to)
{
fm_debug_assert(from.chunk3().z == to.chunk3().z);
const auto vec = to - from;
fm_debug_assert(!vec.isZero());
return next_stepʹ(vec);
}
constexpr float step_magnitude(Vector2b vec)
{
constexpr double cʹ = critter::move_speed * critter::frame_time;
constexpr double dʹ = cʹ / Vector2d{1, 1}.length();
constexpr auto c = (float)cʹ, d = (float)dʹ;
if (vec.x() * vec.y() != 0)
// diagonal
return c;
else
// axis-aligned
return d;
}
bool pf_test::handle_key(app& a, const key_event& e, bool is_down)
{
(void) a; (void)e; (void)is_down;
return false;
}
bool pf_test::handle_mouse_click(app& a, const mouse_button_event& e, bool is_down)
{
if (e.button == mouse_button_left && is_down)
{
if (auto ptʹ = a.cursor_state().point())
{
current = {
.dest = *ptʹ,
.has_value = true,
};
return true;
}
}
else if (e.button == mouse_button_right && is_down)
current = {};
return false;
}
bool pf_test::handle_mouse_move(floormat::app &a, const mouse_move_event& e)
{
if (e.buttons & mouse_button_left)
return handle_mouse_click(a, {e.position, e.mods, mouse_button_left, 1}, true);
else
return false;
}
void pf_test::draw_overlay(app& a)
{
(void)a;
}
void pf_test::draw_ui(app& a, float)
{
(void)a;
}
void pf_test::update_pre(app& a, const Ns& dt)
{
if (!current.has_value)
return;
auto& m = a.main();
auto& C = *a.ensure_player_character(m.world()).ptr;
fm_assert(C.is_dynamic());
if (C.movement.L | C.movement.R | C.movement.U | C.movement.D) [[unlikely]]
{
current.has_value = false;
return;
}
const auto& info = C.atlas->info();
const auto nframes = C.alloc_frame_time(dt, C.delta, info.fps, C.speed);
if (nframes == 0)
return;
C.set_keys(false, false, false, false);
auto index = C.index();
bool ok = true;
for (uint32_t i = 0; i < nframes; i++)
{
C.chunk().ensure_passability();
const auto from = C.position();
if (from == current.dest)
{
current.has_value = false;
//Debug{} << "done!" << from;
C.set_keys(false, false, false, false);
return;
}
const auto step = next_step(from, current.dest);
//Debug{} << "step" << step.direction << step.count << "|" << C.position();
C.set_keys_auto();
if (step.direction == Vector2b{})
{
//Debug{} << "no dir break";
ok = false;
break;
}
fm_assert(step.count > 0);
const auto new_r = dir_from_step(step);
using Frac = decltype(critter::offset_frac)::Type;
constexpr auto frac = (float{limits<Frac>::max}+1)/2;
constexpr auto inv_frac = 1 / frac;
const auto mag = step_magnitude(step.direction);
const auto vec = Vector2(step.direction) * mag;
const auto sign_vec = Math::sign(vec);
auto offset_ = vec + Vector2(C.offset_frac) * sign_vec * inv_frac;
auto off_i = Vector2i(offset_);
//Debug{} << "vec" << vec << "mag" << mag << "off_i" << off_i << "offset_" << Vector2(C.offset_frac) * sign_vec * inv_frac;
if (!off_i.isZero())
{
C.offset_frac = Math::Vector2<Frac>(Math::abs(Math::fmod(offset_, 1.f)) * frac);
if (C.can_move_to(off_i))
{
C.move_to(index, off_i, new_r);
++C.frame %= info.nframes;
}
else
{
ok = false;
break;
}
}
else
C.offset_frac = Math::Vector2<Frac>(Math::min({2.f,2.f}, Math::abs(offset_)) * frac);
}
if (!ok) [[unlikely]]
{
C.set_keys(false, false, false, false);
C.delta = {};
C.offset_frac = {};
current.has_value = false;
}
}
} // namespace
Pointer<base_test> tests_data::make_test_walk() { return Pointer<pf_test>{InPlaceInit}; }
} // namespace floormat::tests
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