graphics-menu-state.cpp

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/*
 * Copyright (C) 2023  Christopher J. Howard
 *
 * This file is part of Antkeeper source code.
 *
 * Antkeeper source code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Antkeeper source code is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Antkeeper source code.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "game/states/graphics-menu-state.hpp"
#include "game/states/options-menu-state.hpp"
#include "game/controls.hpp"
#include <engine/scene/text.hpp>
#include <engine/debug/log.hpp>
#include "game/fonts.hpp"
#include "game/menu.hpp"
#include "game/graphics.hpp"
#include <engine/animation/timeline.hpp>
#include "game/strings.hpp"
#include <engine/utility/hash/fnv1a.hpp>
 
using namespace hash::literals;
 
 
graphics_menu_state::graphics_menu_state(::game& ctx):
    game_state(ctx)
{
    debug::log_trace("Entering graphics menu state...");
    
    // Construct menu item texts
    fullscreen_name_text = std::make_unique<scene::text>();
    fullscreen_value_text = std::make_unique<scene::text>();
    resolution_name_text = std::make_unique<scene::text>();
    resolution_value_text = std::make_unique<scene::text>();
    v_sync_name_text = std::make_unique<scene::text>();
    v_sync_value_text = std::make_unique<scene::text>();
    aa_method_name_text = std::make_unique<scene::text>();
    aa_method_value_text = std::make_unique<scene::text>();
    font_scale_name_text = std::make_unique<scene::text>();
    font_scale_value_text = std::make_unique<scene::text>();
    dyslexia_font_name_text = std::make_unique<scene::text>();
    dyslexia_font_value_text = std::make_unique<scene::text>();
    back_text = std::make_unique<scene::text>();
    
    // Build list of menu item texts
    ctx.menu_item_texts.push_back({fullscreen_name_text.get(), fullscreen_value_text.get()});
    ctx.menu_item_texts.push_back({resolution_name_text.get(), resolution_value_text.get()});
    ctx.menu_item_texts.push_back({v_sync_name_text.get(), v_sync_value_text.get()});
    ctx.menu_item_texts.push_back({aa_method_name_text.get(), aa_method_value_text.get()});
    ctx.menu_item_texts.push_back({font_scale_name_text.get(), font_scale_value_text.get()});
    ctx.menu_item_texts.push_back({dyslexia_font_name_text.get(), dyslexia_font_value_text.get()});
    ctx.menu_item_texts.push_back({back_text.get(), nullptr});
    
    // Set content of menu item texts
    fullscreen_name_text->set_content(get_string(ctx, "graphics_menu_fullscreen"));
    resolution_name_text->set_content(get_string(ctx, "graphics_menu_resolution"));
    v_sync_name_text->set_content(get_string(ctx, "graphics_menu_v_sync"));
    aa_method_name_text->set_content(get_string(ctx, "graphics_menu_aa_method"));
    font_scale_name_text->set_content(get_string(ctx, "graphics_menu_font_scale"));
    dyslexia_font_name_text->set_content(get_string(ctx, "graphics_menu_dyslexia_font"));
    back_text->set_content(get_string(ctx, "back"));
    update_value_text_content();
    
    // Init menu item index
    ::menu::init_menu_item_index(ctx, "graphics");
    
    ::menu::update_text_color(ctx);
    ::menu::update_text_font(ctx);
    ::menu::align_text(ctx);
    ::menu::add_text_to_ui(ctx);
    ::menu::setup_animations(ctx);
    
    // Construct menu item callbacks
    auto toggle_fullscreen_callback = [this, &ctx]()
    {
        bool fullscreen = !ctx.window->is_fullscreen();
        
        ctx.window->set_fullscreen(fullscreen);
        
        this->update_value_text_content();
        ::menu::align_text(ctx);
        
        // Update fullscreen settings
        (*ctx.settings)["fullscreen"] = fullscreen;
    };
    
    auto increase_resolution_callback = [this, &ctx]()
    {
        // Increase resolution
        if (ctx.menu_modifier_action.is_active())
            ctx.render_scale += 0.05f;
        else
            ctx.render_scale += 0.25f;
        
        // Limit resolution
        if (ctx.render_scale > 2.0f)
            ctx.render_scale = 2.0f;
        
        // Update render scale setting
        (*ctx.settings)["render_scale"] = ctx.render_scale;
        
        // Resize framebuffers
        ::graphics::change_render_resolution(ctx, ctx.render_scale);
        
        // Update text
        this->update_value_text_content();
        ::menu::align_text(ctx);
    };
    
    auto decrease_resolution_callback = [this, &ctx]()
    {
        // Increase resolution
        if (ctx.menu_modifier_action.is_active())
            ctx.render_scale -= 0.05f;
        else
            ctx.render_scale -= 0.25f;
        
        // Limit resolution
        if (ctx.render_scale < 0.25f)
            ctx.render_scale = 0.25f;
        
        // Update render scale setting
        (*ctx.settings)["render_scale"] = ctx.render_scale;
        
        // Resize framebuffers
        ::graphics::change_render_resolution(ctx, ctx.render_scale);
        
        // Update text
        this->update_value_text_content();
        ::menu::align_text(ctx);
    };
    
    auto toggle_v_sync_callback = [this, &ctx]()
    {
        bool v_sync = !ctx.window->get_v_sync();
        
        // Update v-sync setting
        (*ctx.settings)["v_sync"] = v_sync;
        
        ctx.window->set_v_sync(v_sync);
        
        this->update_value_text_content();
        ::menu::align_text(ctx);
    };
    
    auto next_aa_method_callback = [this, &ctx]()
    {
        switch (ctx.anti_aliasing_method)
        {
            case render::anti_aliasing_method::none:
                ctx.anti_aliasing_method = render::anti_aliasing_method::fxaa;
                break;
            
            case render::anti_aliasing_method::fxaa:
                ctx.anti_aliasing_method = render::anti_aliasing_method::none;
                break;
        }
        
        // Update anti-aliasing method setting
        (*ctx.settings)["anti_aliasing_method"] = std::to_underlying(ctx.anti_aliasing_method);
        
        ::graphics::select_anti_aliasing_method(ctx, ctx.anti_aliasing_method);
        
        // Update value text
        this->update_value_text_content();
        
        // Refresh and realign text
        ::menu::refresh_text(ctx);
        ::menu::align_text(ctx);
    };
    
    auto previous_aa_method_callback = [this, &ctx]()
    {
        switch (ctx.anti_aliasing_method)
        {
            case render::anti_aliasing_method::none:
                ctx.anti_aliasing_method = render::anti_aliasing_method::fxaa;
                break;
            
            case render::anti_aliasing_method::fxaa:
                ctx.anti_aliasing_method = render::anti_aliasing_method::none;
                break;
        }
        
        // Update anti-aliasing method setting
        (*ctx.settings)["anti_aliasing_method"] = std::to_underlying(ctx.anti_aliasing_method);
        
        ::graphics::select_anti_aliasing_method(ctx, ctx.anti_aliasing_method);
        
        // Update value text
        this->update_value_text_content();
        
        // Refresh and realign text
        ::menu::refresh_text(ctx);
        ::menu::align_text(ctx);
    };
    
    auto increase_font_scale_callback = [this, &ctx]()
    {
        // Increase font scale
        if (ctx.menu_modifier_action.is_active())
            ctx.font_scale += 0.01f;
        else
            ctx.font_scale += 0.1f;
        
        // Limit font scale
        if (ctx.font_scale > 2.0f)
            ctx.font_scale = 2.0f;
        
        // Update font scale setting
        (*ctx.settings)["font_scale"] = ctx.font_scale;
        
        // Update value text
        this->update_value_text_content();
        
        // Reload fonts
        debug::log_trace("Reloading fonts...");
        ::load_fonts(ctx);
        debug::log_trace("Reloaded fonts");
        
        // Refresh and realign text
        ::menu::refresh_text(ctx);
        ::menu::align_text(ctx);
    };
    
    auto decrease_font_scale_callback = [this, &ctx]()
    {
        // Decrease font scale
        if (ctx.menu_modifier_action.is_active())
            ctx.font_scale -= 0.01f;
        else
            ctx.font_scale -= 0.1f;
        
        // Limit font scale
        if (ctx.font_scale < 0.1f)
            ctx.font_scale = 0.1f;
        
        // Update font scale setting
        (*ctx.settings)["font_scale"] = ctx.font_scale;
        
        // Update value text
        this->update_value_text_content();
        
        // Reload fonts
        debug::log_trace("Reloading fonts...");
        ::load_fonts(ctx);
        debug::log_trace("Reloaded fonts");
        
        // Refresh and realign text
        ::menu::refresh_text(ctx);
        ::menu::align_text(ctx);
    };
    
    auto toggle_dyslexia_font_callback = [this, &ctx]()
    {
        ctx.dyslexia_font = !ctx.dyslexia_font;
        
        // Update value text
        this->update_value_text_content();
        
        // Save dyslexia font setting
        (*ctx.settings)["dyslexia_font"] = ctx.dyslexia_font;
        
        // Reload fonts
        debug::log_trace("Reloading fonts...");
        ::load_fonts(ctx);
        debug::log_trace("Reloaded fonts");
        
        // Refresh and realign text
        ::menu::refresh_text(ctx);
        ::menu::align_text(ctx);
    };
    auto select_back_callback = [&ctx]()
    {
        // Disable menu controls
        ctx.function_queue.push(std::bind(::disable_menu_controls, std::ref(ctx)));
        
        ::menu::fade_out
        (
            ctx,
            [&ctx]()
            {
                // Queue change to options menu state
                ctx.function_queue.push
                (
                    [&ctx]()
                    {
                        ctx.state_machine.pop();
                        ctx.state_machine.emplace(std::make_unique<options_menu_state>(ctx));
                    }
                );
            }
        );
    };
    
    // Build list of menu select callbacks
    ctx.menu_select_callbacks.push_back(toggle_fullscreen_callback);
    ctx.menu_select_callbacks.push_back(increase_resolution_callback);
    ctx.menu_select_callbacks.push_back(toggle_v_sync_callback);
    ctx.menu_select_callbacks.push_back(next_aa_method_callback);
    ctx.menu_select_callbacks.push_back(increase_font_scale_callback);
    ctx.menu_select_callbacks.push_back(toggle_dyslexia_font_callback);
    ctx.menu_select_callbacks.push_back(select_back_callback);
    
    // Build list of menu left callbacks
    ctx.menu_left_callbacks.push_back(toggle_fullscreen_callback);
    ctx.menu_left_callbacks.push_back(decrease_resolution_callback);
    ctx.menu_left_callbacks.push_back(toggle_v_sync_callback);
    ctx.menu_left_callbacks.push_back(previous_aa_method_callback);
    ctx.menu_left_callbacks.push_back(decrease_font_scale_callback);
    ctx.menu_left_callbacks.push_back(toggle_dyslexia_font_callback);
    ctx.menu_left_callbacks.push_back(nullptr);
    
    // Build list of menu right callbacks
    ctx.menu_right_callbacks.push_back(toggle_fullscreen_callback);
    ctx.menu_right_callbacks.push_back(increase_resolution_callback);
    ctx.menu_right_callbacks.push_back(toggle_v_sync_callback);
    ctx.menu_right_callbacks.push_back(next_aa_method_callback);
    ctx.menu_right_callbacks.push_back(increase_font_scale_callback);
    ctx.menu_right_callbacks.push_back(toggle_dyslexia_font_callback);
    ctx.menu_right_callbacks.push_back(nullptr);
    
    // Set menu back callback
    ctx.menu_back_callback = select_back_callback;
    
    // Enable menu controls next frame
    ctx.function_queue.push(std::bind(::enable_menu_controls, std::ref(ctx)));
    
    // Fade in menu
    ::menu::fade_in(ctx, nullptr);
    
    debug::log_trace("Entered graphics menu state");
}
 
graphics_menu_state::~graphics_menu_state()
{
    debug::log_trace("Exiting graphics menu state...");
    
    // Destruct menu
    ::disable_menu_controls(ctx);
    ::menu::clear_callbacks(ctx);
    ::menu::delete_animations(ctx);
    ::menu::remove_text_from_ui(ctx);
    ::menu::delete_text(ctx);
    
    debug::log_trace("Exited graphics menu state");
}
 
void graphics_menu_state::update_value_text_content()
{
    const bool fullscreen = ctx.window->is_fullscreen();
    const float render_scale = ctx.render_scale;
    const bool v_sync = ctx.window->get_v_sync();
    const int aa_method_index = static_cast<int>(ctx.anti_aliasing_method);
    const float font_scale = ctx.font_scale;
    const bool dyslexia_font = ctx.dyslexia_font;
    
    const std::string string_on = get_string(ctx, "on");
    const std::string string_off = get_string(ctx, "off");
    
    /*
    const std::string string_quality[4] = 
    {
        (*ctx.strings)["off"],
        (*ctx.strings)["quality_low"],
        (*ctx.strings)["quality_medium"],
        (*ctx.strings)["quality_high"]
    };
    */
    
    const std::string string_aa_methods[2] = 
    {
        get_string(ctx, "graphics_menu_aa_method_none"),
        get_string(ctx, "graphics_menu_aa_method_fxaa")
    };
    
    std::get<1>(ctx.menu_item_texts[0])->set_content((fullscreen) ? string_on : string_off);
    std::get<1>(ctx.menu_item_texts[1])->set_content(std::to_string(static_cast<int>(std::round(render_scale * 100.0f))) + "%");
    std::get<1>(ctx.menu_item_texts[2])->set_content((v_sync) ? string_on : string_off);
    std::get<1>(ctx.menu_item_texts[3])->set_content(string_aa_methods[aa_method_index]);
    std::get<1>(ctx.menu_item_texts[4])->set_content(std::to_string(static_cast<int>(std::round(font_scale * 100.0f))) + "%");
    std::get<1>(ctx.menu_item_texts[5])->set_content((dyslexia_font) ? string_on : string_off);
}