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#include "app.hpp"
#include "floormat/main.hpp"
#include "floormat/events.hpp"
#include "src/world.hpp"
#include "keys.hpp"
#include <utility>
#include <Magnum/Platform/Sdl2Application.h>
#include <Magnum/ImGuiIntegration/Context.hpp>
#include <SDL_keycode.h>
#include <SDL_events.h>
namespace floormat {
void app::on_focus_in() noexcept {}
void app::on_mouse_enter() noexcept {}
void app::on_any_event(const any_event&) noexcept {}
#define accessor(type, name) \
type m_##name = {}; auto name() const noexcept { return m_##name; }
static constexpr int fixup_mods_(int mods, int value, int mask)
{
return !!(mods & mask) * value;
}
static constexpr int fixup_mods(int mods)
{
int ret = 0;
ret |= fixup_mods_(mods, kmod_ctrl, KMOD_CTRL);
ret |= fixup_mods_(mods, kmod_shift, KMOD_SHIFT);
ret |= fixup_mods_(mods, kmod_alt, KMOD_ALT);
ret |= fixup_mods_(mods, kmod_super, KMOD_GUI);
return ret;
}
void app::clear_keys(key min_inclusive, key max_exclusive)
{
using key_type = decltype(keys)::value_type;
for (key_type i = key_type(min_inclusive); i < key_type(max_exclusive); i++)
{
const auto idx = key(i);
keys[idx] = false;
key_modifiers[i] = kmod_none;
}
}
void app::clear_keys()
{
keys.reset();
key_modifiers = {};
}
void app::on_mouse_move(const mouse_move_event& event) noexcept
{
struct {
accessor(Vector2i, position)
} e = {event.position};
cursor.in_imgui = _imgui.handleMouseMoveEvent(e);
update_cursor_tile(event.position);
do_mouse_move(fixup_mods(event.mods));
}
void app::on_mouse_up_down(const mouse_button_event& event, bool is_down) noexcept
{
enum class Button_ : std::underlying_type_t<mouse_button> {
Left = mouse_button_left,
Right = mouse_button_right,
Middle = mouse_button_middle,
};
const auto button = std::uint8_t(1 << (event.button-1));
struct ev {
using Button = Button_;
accessor(Vector2i, position)
accessor(Button, button)
} e = {event.position, Button_(button)};
if (!(cursor.in_imgui = is_down ? _imgui.handleMousePressEvent(e) : _imgui.handleMouseReleaseEvent(e)))
do_mouse_up_down(button, is_down, fixup_mods(event.mods));
}
void app::on_mouse_scroll(const mouse_scroll_event& event) noexcept
{
struct {
accessor(Vector2, offset)
accessor(Vector2i, position)
} e = {event.offset, event.position};
_imgui.handleMouseScrollEvent(e);
}
auto app::resolve_keybinding(int k_, int mods_) const -> std::tuple<key, int>
{
[[maybe_unused]] constexpr int CTRL = kmod_ctrl;
[[maybe_unused]] constexpr int SHIFT = kmod_shift;
[[maybe_unused]] constexpr int ALT = kmod_alt;
[[maybe_unused]] constexpr int SUPER = kmod_super;
const int k = k_ | fixup_mods(mods_);
constexpr kmod list[] = { kmod_none, kmod_super, kmod_alt, kmod_shift, kmod_ctrl, };
int last = ~0;
for (int k1 = k; kmod mod1 : list)
{
k1 &= ~mod1;
for (int k2 = k1; kmod mod2 : list)
{
k2 &= ~mod2;
if (k2 == last)
continue;
last = k2;
switch (int mods = k2 & kmod_mask; k2)
{
default: continue;
case SDLK_w: return { key_camera_up, mods };
case SDLK_a: return { key_camera_left, mods };
case SDLK_s: return { key_camera_down, mods };
case SDLK_d: return { key_camera_right, mods };
case SDLK_HOME: return { key_camera_reset, mods };
case SDLK_r: return { key_rotate_tile, mods };
case SDLK_1: return { key_mode_none, mods };
case SDLK_2: return { key_mode_floor, mods };
case SDLK_3: return { key_mode_walls, mods };
case SDLK_F5: return { key_quicksave, mods };
case SDLK_F9: return { key_quickload, mods };
case SDLK_q | CTRL: return { key_quit, mods };
}
}
}
return { key_COUNT, k & kmod_mask };
}
void app::on_key_up_down(const key_event& event, bool is_down) noexcept
{
using KeyEvent = Platform::Sdl2Application::KeyEvent;
struct Ev final {
using Key = KeyEvent::Key;
using Modifier = KeyEvent::Modifier;
using Modifiers = KeyEvent::Modifiers;
accessor(Key, key)
accessor(Modifiers, modifiers)
} e = {Ev::Key(event.key), Ev::Modifier(event.mods)};
auto [x, mods] = resolve_keybinding(event.key, event.mods);
if (x == key_COUNT)
void();
else if (x >= key_NO_REPEAT)
is_down && !event.is_repeated ? do_key(x, mods) : void();
else if (is_down ? _imgui.handleKeyPressEvent(e) : _imgui.handleKeyReleaseEvent(e))
clear_non_global_keys();
else {
keys[x] = is_down;
key_modifiers[std::size_t(x)] = mods;
}
}
void app::on_text_input_event(const text_input_event& event) noexcept
{
struct {
accessor(Containers::StringView, text)
} e = {event.text};
if (_imgui.handleTextInputEvent(e))
clear_non_global_keys();
}
void app::on_viewport_event(const Math::Vector2<int>& size) noexcept
{
init_imgui(size);
}
void app::on_focus_out() noexcept
{
update_cursor_tile(std::nullopt);
clear_keys();
}
void app::on_mouse_leave() noexcept
{
update_cursor_tile(std::nullopt);
}
void app::do_key(floormat::key k)
{
do_key(k, get_key_modifiers());
}
int app::get_key_modifiers()
{
return fixup_mods(SDL_GetModState());
}
} // namespace floormat
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