- /*
- * 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/credits-state.hpp"
- #include "game/states/extras-menu-state.hpp"
- #include "game/game.hpp"
- #include <engine/animation/ease.hpp>
- #include <engine/animation/animation.hpp>
- #include <engine/animation/animator.hpp>
- #include <engine/scene/text.hpp>
- #include <engine/debug/log.hpp>
- #include "game/strings.hpp"
- #include <engine/utility/hash/fnv1a.hpp>
- #include <engine/math/vector.hpp>
-
- credits_state::credits_state(::game& ctx):
- game_state(ctx)
- {
- debug::log_trace("Entering credits state...");
-
- const math::fvec2 viewport_size = math::fvec2(ctx.window->get_viewport_size());
- const math::fvec2 viewport_center = viewport_size * 0.5f;
-
- // Construct credits text
- credits_text.set_material(ctx.menu_font_material);
- credits_text.set_font(&ctx.menu_font);
- credits_text.set_color({1.0f, 1.0f, 1.0f, 0.0f});
- credits_text.set_content(get_string(ctx, "credits"));
-
- // Align credits text
- const auto& credits_aabb = credits_text.get_bounds();
- float credits_w = credits_aabb.max.x() - credits_aabb.min.x();
- float credits_h = credits_aabb.max.y() - credits_aabb.min.y();
- credits_text.set_translation({std::round(viewport_center.x() - credits_w * 0.5f), std::round(viewport_center.y() - credits_h * 0.5f), 0.0f});
-
- // Set up animation timing configuration
- const float credits_fade_in_duration = 0.5;
- const float credits_scroll_duration = 5.0;
-
- auto set_credits_opacity = [this](int channel, const float& opacity)
- {
- this->credits_text.set_color({1.0f, 1.0f, 1.0f, opacity});
- };
-
- // Build credits fade in animation
- credits_fade_in_animation.set_interpolator(ease<float>::in_quad);
- animation_channel<float>* credits_fade_in_opacity_channel = credits_fade_in_animation.add_channel(0);
- credits_fade_in_opacity_channel->insert_keyframe({0.0f, 0.0f});
- credits_fade_in_opacity_channel->insert_keyframe({credits_fade_in_duration, 1.0f});
- credits_fade_in_animation.set_frame_callback(set_credits_opacity);
-
- // Add credits animations to animator
- ctx.animator->add_animation(&credits_fade_in_animation);
-
- // Start credits fade in animation
- credits_fade_in_animation.play();
-
- // Setup window resized callback
- window_resized_subscription = ctx.window->get_resized_channel().subscribe
- (
- [&](const auto& event)
- {
- const math::fvec2 viewport_size = math::fvec2(event.window->get_viewport_size());
- const math::fvec2 viewport_center = viewport_size * 0.5f;
- const auto& credits_aabb = credits_text.get_bounds();
- float credits_w = credits_aabb.max.x() - credits_aabb.min.x();
- float credits_h = credits_aabb.max.y() - credits_aabb.min.y();
- credits_text.set_translation({std::round(viewport_center.x() - credits_w * 0.5f), std::round(viewport_center.y() - credits_h * 0.5f), 0.0f});
- }
- );
-
- // Construct credits skip function
- auto skip = [&](const auto& event)
- {
- ctx.function_queue.emplace
- (
- [&]()
- {
- // Change to extras menu state
- ctx.state_machine.pop();
- ctx.state_machine.emplace(std::make_unique<extras_menu_state>(ctx));
- }
- );
- };
-
- // Set up credits skippers
- input_mapped_subscriptions.emplace_back
- (
- ctx.input_mapper.get_gamepad_button_mapped_channel().subscribe
- (
- skip
- )
- );
- input_mapped_subscriptions.emplace_back
- (
- ctx.input_mapper.get_key_mapped_channel().subscribe
- (
- skip
- )
- );
- input_mapped_subscriptions.emplace_back
- (
- ctx.input_mapper.get_mouse_button_mapped_channel().subscribe
- (
- skip
- )
- );
-
- // Enable credits skippers next frame
- ctx.function_queue.push
- (
- [&]()
- {
- ctx.input_mapper.connect(ctx.input_manager->get_event_dispatcher());
- }
- );
-
- ctx.ui_scene->add_object(credits_text);
-
- debug::log_trace("Entered credits state");
- }
-
- credits_state::~credits_state()
- {
- debug::log_trace("Exiting credits state...");
-
- // Disable credits skippers
- ctx.input_mapper.disconnect();
- input_mapped_subscriptions.clear();
-
- // Destruct credits text
- ctx.ui_scene->remove_object(credits_text);
-
- // Destruct credits animations
- ctx.animator->remove_animation(&credits_fade_in_animation);
-
- debug::log_trace("Exited credits state");
- }
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