💿🐜 Antkeeper source code
https://antkeeper.com
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222 lines
8.5 KiB
222 lines
8.5 KiB
/*
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* Copyright (C) 2021 Christopher J. Howard
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*
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* This file is part of Antkeeper source code.
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*
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* Antkeeper source code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "game/states/title.hpp"
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#include "game/states/main-menu.hpp"
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#include "animation/screen-transition.hpp"
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#include "animation/ease.hpp"
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#include "animation/animation.hpp"
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#include "animation/animator.hpp"
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#include "application.hpp"
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#include "scene/text.hpp"
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#include "configuration.hpp"
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#include "render/passes/clear-pass.hpp"
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namespace game {
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namespace state {
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namespace title {
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void enter(game::context* ctx)
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{
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ctx->ui_clear_pass->set_cleared_buffers(true, true, false);
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// Construct title text
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ctx->title_text = new scene::text();
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ctx->title_text->set_material(&ctx->title_font_material);
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ctx->title_text->set_font(&ctx->title_font);
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ctx->title_text->set_color({1.0f, 1.0f, 1.0f, 0.0f});
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ctx->title_text->set_content((*ctx->strings)["title_antkeeper"]);
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// Construct "Press any key" text
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ctx->title_press_any_key_text = new scene::text();
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ctx->title_press_any_key_text->set_material(&ctx->menu_font_material);
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ctx->title_press_any_key_text->set_font(&ctx->menu_font);
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ctx->title_press_any_key_text->set_color({1.0f, 1.0f, 1.0f, 0.0f});
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ctx->title_press_any_key_text->set_content((*ctx->strings)["title_press_any_key"]);
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int window_height = std::get<1>(ctx->app->get_viewport_dimensions());
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// Align title text
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const auto& title_aabb = static_cast<const geom::aabb<float>&>(ctx->title_text->get_local_bounds());
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float title_w = title_aabb.max_point.x - title_aabb.min_point.x;
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float title_h = title_aabb.max_point.y - title_aabb.min_point.y;
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ctx->title_text->set_translation({std::round(-title_w * 0.5f), std::round(-title_h * 0.5f + (window_height / 3) / 2), 0.0f});
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// Align "Press any key" text
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const auto& any_key_aabb = static_cast<const geom::aabb<float>&>(ctx->title_press_any_key_text->get_local_bounds());
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float any_key_w = any_key_aabb.max_point.x - any_key_aabb.min_point.x;
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float any_key_h = any_key_aabb.max_point.y - any_key_aabb.min_point.y;
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ctx->title_press_any_key_text->set_translation({std::round(-any_key_w * 0.5f), std::round(-any_key_h * 0.5f - (window_height / 3) / 2), 0.0f});
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// Load animation timing configuration
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double title_fade_in_duration = 0.0;
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double title_fade_out_duration = 0.0;
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double title_press_any_key_duration = 0.0;
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double title_press_any_key_delay = 0.0;
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if (ctx->config->contains("title_fade_in_duration"))
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title_fade_in_duration = (*ctx->config)["title_fade_in_duration"].get<double>();
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if (ctx->config->contains("title_fade_out_duration"))
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title_fade_out_duration = (*ctx->config)["title_fade_out_duration"].get<double>();
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if (ctx->config->contains("title_press_any_key_duration"))
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title_press_any_key_duration = (*ctx->config)["title_press_any_key_duration"].get<double>();
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if (ctx->config->contains("title_press_any_key_delay"))
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title_press_any_key_delay = (*ctx->config)["title_press_any_key_delay"].get<double>();
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auto set_title_opacity = [ctx](int channel, const float& opacity)
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{
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ctx->title_text->set_color({1.0f, 1.0f, 1.0f, opacity});
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};
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// Build title fade in animation
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ctx->title_fade_in_animation = new animation<float>();
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animation_channel<float>* title_fade_in_opacity_channel = ctx->title_fade_in_animation->add_channel(0);
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ctx->title_fade_in_animation->set_interpolator(ease<float>::in_quad);
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title_fade_in_opacity_channel->insert_keyframe({0.0, 0.0f});
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title_fade_in_opacity_channel->insert_keyframe({title_fade_in_duration, 1.0f});
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title_fade_in_opacity_channel->insert_keyframe({title_fade_in_duration + title_press_any_key_delay, 1.0f});
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ctx->title_fade_in_animation->set_frame_callback(set_title_opacity);
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// Trigger "Press any key" animation after title fade in animation ends
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ctx->title_fade_in_animation->set_end_callback
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(
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[ctx]()
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{
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ctx->title_press_any_key_animation->play();
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}
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);
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// Build title fade out animation
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ctx->title_fade_out_animation = new animation<float>();
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animation_channel<float>* title_fade_out_opacity_channel = ctx->title_fade_out_animation->add_channel(0);
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ctx->title_fade_out_animation->set_interpolator(ease<float>::out_quad);
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title_fade_out_opacity_channel->insert_keyframe({0.0, 1.0f});
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title_fade_out_opacity_channel->insert_keyframe({title_fade_out_duration, 0.0f});
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ctx->title_fade_out_animation->set_frame_callback(set_title_opacity);
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// Trigger a state change when the title fade out animation ends
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ctx->title_fade_out_animation->set_end_callback
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(
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[ctx]()
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{
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application::state next_state;
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next_state.name = "main_menu";
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next_state.enter = std::bind(game::state::main_menu::enter, ctx, 0);
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next_state.exit = std::bind(game::state::main_menu::exit, ctx);
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ctx->app->queue_state(next_state);
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}
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);
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// Build "Press any key" animation
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ctx->title_press_any_key_animation = new animation<float>();
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ctx->title_press_any_key_animation->loop(true);
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animation_channel<float>* title_press_any_key_opacity_channel = ctx->title_press_any_key_animation->add_channel(0);
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ctx->title_press_any_key_animation->set_interpolator(math::lerp<float, double>);
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title_press_any_key_opacity_channel->insert_keyframe({0.0, 0.0f});
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title_press_any_key_opacity_channel->insert_keyframe({title_press_any_key_duration * 0.5, 1.0f});
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title_press_any_key_opacity_channel->insert_keyframe({title_press_any_key_duration, 0.0f});
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ctx->title_press_any_key_animation->set_frame_callback
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(
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[ctx](int channel, const float& opacity)
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{
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ctx->title_press_any_key_text->set_color({1.0f, 1.0f, 1.0f, 0.5f * ease<float>::out_cubic(0.0f, 1.0f, opacity)});
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}
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);
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// Add title fade animations to animator
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ctx->animator->add_animation(ctx->title_fade_in_animation);
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ctx->animator->add_animation(ctx->title_fade_out_animation);
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ctx->animator->add_animation(ctx->title_press_any_key_animation);
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// Start title fade in animation
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ctx->title_fade_in_animation->play();
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// Set up title skipper
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ctx->input_listener->set_callback
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(
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[ctx](const event_base& event)
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{
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auto id = event.get_event_type_id();
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if (id != mouse_moved_event::event_type_id && id != mouse_wheel_scrolled_event::event_type_id && id != gamepad_axis_moved_event::event_type_id)
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{
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/*
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if (ctx->title_fade_in_animation->is_stopped())
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{
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ctx->title_fade_out_animation->play();
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ctx->input_listener->set_enabled(false);
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}
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*/
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if (ctx->title_text->get_color()[3] > 0.0f)
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{
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ctx->input_listener->set_enabled(false);
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// Black out screen
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ctx->rasterizer->set_clear_color(0.0f, 0.0f, 0.0f, 1.0f);
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ctx->rasterizer->clear_framebuffer(true, false, false);
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ctx->app->swap_buffers();
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// Change state
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application::state next_state;
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next_state.name = "main_menu";
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next_state.enter = std::bind(game::state::main_menu::enter, ctx, 0);
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next_state.exit = std::bind(game::state::main_menu::exit, ctx);
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ctx->app->change_state(next_state);
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}
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}
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}
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);
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ctx->input_listener->set_enabled(true);
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ctx->ui_scene->add_object(ctx->title_text);
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ctx->title_text->update_tweens();
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ctx->ui_scene->add_object(ctx->title_press_any_key_text);
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ctx->title_press_any_key_text->update_tweens();
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}
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void exit(game::context* ctx)
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{
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// Remove title text
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ctx->ui_scene->remove_object(ctx->title_text);
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ctx->ui_scene->remove_object(ctx->title_press_any_key_text);
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// Disable title skipper
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ctx->input_listener->set_enabled(false);
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ctx->input_listener->set_callback(nullptr);
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// Destruct title animations
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ctx->animator->remove_animation(ctx->title_fade_in_animation);
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ctx->animator->remove_animation(ctx->title_fade_out_animation);
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ctx->animator->remove_animation(ctx->title_press_any_key_animation);
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delete ctx->title_fade_in_animation;
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delete ctx->title_fade_out_animation;
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delete ctx->title_press_any_key_animation;
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ctx->title_fade_in_animation = nullptr;
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ctx->title_fade_out_animation = nullptr;
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ctx->title_press_any_key_animation = nullptr;
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ctx->ui_clear_pass->set_cleared_buffers(false, true, false);
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}
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} // namespace title
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} // namespace state
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} // namespace game
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