546 lines
17 KiB
JavaScript
546 lines
17 KiB
JavaScript
/**
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* 首页场景 - 支持UGC
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*/
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import BaseScene from './BaseScene';
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export default class HomeScene extends BaseScene {
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constructor(main, params) {
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super(main, params);
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this.storyList = [];
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this.scrollY = 0;
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this.maxScrollY = 0;
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this.isDragging = false;
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this.lastTouchY = 0;
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this.scrollVelocity = 0;
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// 底部Tab: 首页/发现/创作/我的
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this.bottomTab = 0;
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// 内容源Tab: 推荐/关注/最新/排行
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this.contentTab = 0;
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this.contentTabs = ['推荐', '关注', '最新', '排行'];
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// 分类标签
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this.categories = ['全部', '都市言情', '悬疑推理', '古风宫廷', '校园青春', '修仙玄幻', '穿越重生', '职场商战', '科幻未来', '恐怖惊悚', '搞笑轻喜'];
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this.selectedCategory = 0;
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// 分类横向滚动
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this.categoryScrollX = 0;
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this.maxCategoryScrollX = 0;
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this.isCategoryDragging = false;
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this.lastTouchX = 0;
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this.categoryRects = [];
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}
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async init() {
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this.storyList = this.main.storyManager.storyList;
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this.calculateMaxScroll();
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}
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getFilteredStories() {
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let stories = this.storyList;
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// 按内容源筛选
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if (this.contentTab === 1) {
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// 关注：暂时返回空（需要后端支持）
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stories = [];
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} else if (this.contentTab === 2) {
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// 最新：按时间排序
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stories = [...stories].sort((a, b) => new Date(b.created_at) - new Date(a.created_at));
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} else if (this.contentTab === 3) {
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// 排行：按播放量排序
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stories = [...stories].sort((a, b) => b.play_count - a.play_count);
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}
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// 按分类筛选
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if (this.selectedCategory > 0) {
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const categoryName = this.categories[this.selectedCategory];
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stories = stories.filter(s => s.category === categoryName);
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}
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return stories;
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}
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calculateMaxScroll() {
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const stories = this.getFilteredStories();
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const cardHeight = 130;
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const gap = 12;
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const startY = 175;
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const tabHeight = 60;
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const contentBottom = startY + stories.length * (cardHeight + gap);
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const visibleBottom = this.screenHeight - tabHeight;
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this.maxScrollY = Math.max(0, contentBottom - visibleBottom);
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}
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update() {
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if (!this.isDragging && Math.abs(this.scrollVelocity) > 0.5) {
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this.scrollY += this.scrollVelocity;
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this.scrollVelocity *= 0.95;
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this.scrollY = Math.max(0, Math.min(this.scrollY, this.maxScrollY));
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}
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}
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render(ctx) {
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this.renderBackground(ctx);
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this.renderHeader(ctx);
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this.renderContentTabs(ctx);
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this.renderCategories(ctx);
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this.renderStoryList(ctx);
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this.renderBottomTabBar(ctx);
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}
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renderBackground(ctx) {
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const gradient = ctx.createLinearGradient(0, 0, 0, this.screenHeight);
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gradient.addColorStop(0, '#0f0c29');
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gradient.addColorStop(0.5, '#302b63');
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gradient.addColorStop(1, '#24243e');
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ctx.fillStyle = gradient;
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ctx.fillRect(0, 0, this.screenWidth, this.screenHeight);
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// 星空点缀
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ctx.fillStyle = 'rgba(255,255,255,0.3)';
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[[30, 80], [80, 30], [150, 60], [200, 25], [280, 70], [320, 40]].forEach(([x, y]) => {
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ctx.beginPath();
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ctx.arc(x, y, 1, 0, Math.PI * 2);
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ctx.fill();
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});
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}
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renderHeader(ctx) {
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// 标题
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const titleGradient = ctx.createLinearGradient(15, 30, 180, 30);
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titleGradient.addColorStop(0, '#ffd700');
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titleGradient.addColorStop(1, '#ff6b6b');
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ctx.fillStyle = titleGradient;
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ctx.font = 'bold 22px sans-serif';
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ctx.textAlign = 'left';
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ctx.fillText('星域故事汇', 15, 42);
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// 搜索按钮
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const searchX = this.screenWidth - 45;
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ctx.fillStyle = 'rgba(255,255,255,0.1)';
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ctx.beginPath();
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ctx.arc(searchX, 35, 18, 0, Math.PI * 2);
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ctx.fill();
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ctx.fillStyle = 'rgba(255,255,255,0.7)';
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ctx.font = '16px sans-serif';
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ctx.textAlign = 'center';
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ctx.fillText('🔍', searchX, 41);
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this.searchBtnRect = { x: searchX - 18, y: 17, width: 36, height: 36 };
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}
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renderContentTabs(ctx) {
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const tabY = 60;
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const tabWidth = (this.screenWidth - 30) / 4;
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const padding = 15;
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this.contentTabRects = [];
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this.contentTabs.forEach((tab, index) => {
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const x = padding + index * tabWidth;
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const isActive = index === this.contentTab;
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// 文字
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ctx.fillStyle = isActive ? '#ffffff' : 'rgba(255,255,255,0.5)';
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ctx.font = isActive ? 'bold 14px sans-serif' : '14px sans-serif';
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ctx.textAlign = 'center';
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ctx.fillText(tab, x + tabWidth / 2, tabY + 12);
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// 下划线指示器
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if (isActive) {
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const lineGradient = ctx.createLinearGradient(x + tabWidth / 2 - 12, tabY + 20, x + tabWidth / 2 + 12, tabY + 20);
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lineGradient.addColorStop(0, '#ff6b6b');
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lineGradient.addColorStop(1, '#ffd700');
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ctx.fillStyle = lineGradient;
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this.roundRect(ctx, x + tabWidth / 2 - 12, tabY + 18, 24, 3, 1.5);
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ctx.fill();
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}
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this.contentTabRects.push({ x, y: tabY - 5, width: tabWidth, height: 30, index });
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});
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}
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renderCategories(ctx) {
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const startY = 95;
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const tagHeight = 28;
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let x = 15 - this.categoryScrollX;
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ctx.font = '12px sans-serif';
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let totalWidth = 15;
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this.categories.forEach((cat) => {
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totalWidth += ctx.measureText(cat).width + 24 + 10;
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});
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this.maxCategoryScrollX = Math.max(0, totalWidth - this.screenWidth + 15);
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this.categoryRects = [];
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this.categories.forEach((cat, index) => {
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const isSelected = index === this.selectedCategory;
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const textWidth = ctx.measureText(cat).width + 24;
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this.categoryRects.push({ left: x + this.categoryScrollX, right: x + this.categoryScrollX + textWidth, index });
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if (x + textWidth > 0 && x < this.screenWidth) {
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if (isSelected) {
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const tagGradient = ctx.createLinearGradient(x, startY, x + textWidth, startY);
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tagGradient.addColorStop(0, '#ff6b6b');
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tagGradient.addColorStop(1, '#ffd700');
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ctx.fillStyle = tagGradient;
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} else {
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ctx.fillStyle = 'rgba(255,255,255,0.08)';
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}
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this.roundRect(ctx, x, startY, textWidth, tagHeight, 14);
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ctx.fill();
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if (!isSelected) {
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ctx.strokeStyle = 'rgba(255,255,255,0.12)';
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ctx.lineWidth = 1;
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this.roundRect(ctx, x, startY, textWidth, tagHeight, 14);
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ctx.stroke();
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}
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ctx.fillStyle = isSelected ? '#ffffff' : 'rgba(255,255,255,0.6)';
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ctx.font = isSelected ? 'bold 12px sans-serif' : '12px sans-serif';
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ctx.textAlign = 'center';
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ctx.fillText(cat, x + textWidth / 2, startY + 18);
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}
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x += textWidth + 10;
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});
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}
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renderStoryList(ctx) {
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const startY = 140;
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const cardHeight = 130;
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const cardMargin = 12;
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const stories = this.getFilteredStories();
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if (stories.length === 0) {
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ctx.fillStyle = 'rgba(255,255,255,0.4)';
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ctx.font = '14px sans-serif';
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ctx.textAlign = 'center';
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const emptyText = this.contentTab === 1 ? '关注作者后，这里会显示他们的故事' : '暂无故事';
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ctx.fillText(emptyText, this.screenWidth / 2, 280);
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return;
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}
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ctx.save();
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ctx.beginPath();
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ctx.rect(0, startY, this.screenWidth, this.screenHeight - startY - 60);
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ctx.clip();
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stories.forEach((story, index) => {
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const y = startY + index * (cardHeight + cardMargin) - this.scrollY;
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if (y > startY - cardHeight && y < this.screenHeight - 60) {
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this.renderStoryCard(ctx, story, 12, y, this.screenWidth - 24, cardHeight);
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}
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});
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ctx.restore();
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}
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renderStoryCard(ctx, story, x, y, width, height) {
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// 卡片背景
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ctx.fillStyle = 'rgba(255,255,255,0.06)';
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this.roundRect(ctx, x, y, width, height, 14);
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ctx.fill();
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ctx.strokeStyle = 'rgba(255,255,255,0.08)';
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ctx.lineWidth = 1;
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this.roundRect(ctx, x, y, width, height, 14);
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ctx.stroke();
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// 封面
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const coverW = 80, coverH = height - 20;
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const coverGradient = ctx.createLinearGradient(x + 10, y + 10, x + 10 + coverW, y + 10 + coverH);
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const colors = this.getCategoryGradient(story.category);
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coverGradient.addColorStop(0, colors[0]);
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coverGradient.addColorStop(1, colors[1]);
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ctx.fillStyle = coverGradient;
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this.roundRect(ctx, x + 10, y + 10, coverW, coverH, 10);
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ctx.fill();
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ctx.fillStyle = 'rgba(255,255,255,0.85)';
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ctx.font = 'bold 10px sans-serif';
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ctx.textAlign = 'center';
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ctx.fillText(story.category || '故事', x + 10 + coverW / 2, y + 10 + coverH / 2 + 4);
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const textX = x + 100;
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const maxW = width - 115;
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// 故事标题
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ctx.fillStyle = '#ffffff';
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ctx.font = 'bold 15px sans-serif';
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ctx.textAlign = 'left';
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ctx.fillText(this.truncateText(ctx, story.title, maxW), textX, y + 28);
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// 作者信息
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ctx.fillStyle = 'rgba(255,255,255,0.6)';
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ctx.font = '11px sans-serif';
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const authorName = story.author_name || '官方';
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ctx.fillText(`@${authorName}`, textX, y + 48);
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// 来源标签
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const isOfficial = !story.source_type || story.source_type === 'official';
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const tagText = isOfficial ? '官方' : (story.source_type === 'ai' ? 'AI' : 'UGC');
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const tagColor = isOfficial ? '#ffd700' : (story.source_type === 'ai' ? '#a855f7' : '#4ade80');
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const tagW = ctx.measureText(tagText).width + 12;
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const tagX = textX + ctx.measureText(`@${authorName}`).width + 8;
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ctx.fillStyle = tagColor + '22';
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this.roundRect(ctx, tagX, y + 38, tagW, 16, 8);
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ctx.fill();
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ctx.fillStyle = tagColor;
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ctx.font = 'bold 9px sans-serif';
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ctx.textAlign = 'center';
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ctx.fillText(tagText, tagX + tagW / 2, y + 49);
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// 简介
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ctx.fillStyle = 'rgba(255,255,255,0.45)';
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ctx.font = '11px sans-serif';
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ctx.textAlign = 'left';
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ctx.fillText(this.truncateText(ctx, story.description || '', maxW), textX, y + 72);
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// 统计
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ctx.fillStyle = 'rgba(255,255,255,0.4)';
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ctx.font = '10px sans-serif';
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ctx.fillText(`▶ ${this.formatNumber(story.play_count || 0)}`, textX, y + 100);
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ctx.fillText(`♥ ${this.formatNumber(story.like_count || 0)}`, textX + 55, y + 100);
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ctx.fillText(`💬 ${this.formatNumber(story.comment_count || 0)}`, textX + 105, y + 100);
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// 精选标签
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if (story.is_featured) {
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const fGradient = ctx.createLinearGradient(x + width - 50, y + 10, x + width - 10, y + 10);
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fGradient.addColorStop(0, '#ff6b6b');
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fGradient.addColorStop(1, '#ffd700');
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ctx.fillStyle = fGradient;
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this.roundRect(ctx, x + width - 50, y + 10, 40, 20, 10);
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ctx.fill();
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ctx.fillStyle = '#ffffff';
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ctx.font = 'bold 9px sans-serif';
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ctx.textAlign = 'center';
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ctx.fillText('精选', x + width - 30, y + 24);
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}
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}
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renderBottomTabBar(ctx) {
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const tabH = 60;
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const y = this.screenHeight - tabH;
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ctx.fillStyle = 'rgba(15, 12, 41, 0.98)';
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ctx.fillRect(0, y, this.screenWidth, tabH);
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const lineGradient = ctx.createLinearGradient(0, y, this.screenWidth, y);
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lineGradient.addColorStop(0, 'rgba(255,107,107,0.2)');
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lineGradient.addColorStop(0.5, 'rgba(255,215,0,0.2)');
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lineGradient.addColorStop(1, 'rgba(255,107,107,0.2)');
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ctx.strokeStyle = lineGradient;
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ctx.lineWidth = 1;
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ctx.beginPath();
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ctx.moveTo(0, y);
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ctx.lineTo(this.screenWidth, y);
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ctx.stroke();
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const tabs = [
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{ icon: '🏠', label: '首页' },
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{ icon: '🔥', label: '发现' },
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{ icon: '✨', label: '创作' },
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{ icon: '👤', label: '我的' }
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];
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const tabW = this.screenWidth / tabs.length;
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this.bottomTabRects = [];
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tabs.forEach((tab, index) => {
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const centerX = index * tabW + tabW / 2;
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const isActive = index === this.bottomTab;
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if (isActive) {
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const indGradient = ctx.createLinearGradient(centerX - 16, y + 2, centerX + 16, y + 2);
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indGradient.addColorStop(0, '#ff6b6b');
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indGradient.addColorStop(1, '#ffd700');
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ctx.fillStyle = indGradient;
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this.roundRect(ctx, centerX - 16, y + 2, 32, 3, 1.5);
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ctx.fill();
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}
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ctx.font = index === 2 ? '24px sans-serif' : '20px sans-serif';
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ctx.textAlign = 'center';
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ctx.fillText(tab.icon, centerX, y + 28);
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ctx.fillStyle = isActive ? '#ffffff' : 'rgba(255,255,255,0.4)';
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ctx.font = isActive ? 'bold 10px sans-serif' : '10px sans-serif';
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ctx.fillText(tab.label, centerX, y + 48);
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this.bottomTabRects.push({ x: index * tabW, y, width: tabW, height: tabH, index });
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});
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}
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getCategoryGradient(category) {
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const gradients = {
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'都市言情': ['#ff758c', '#ff7eb3'],
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'悬疑推理': ['#667eea', '#764ba2'],
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'古风宫廷': ['#f093fb', '#f5576c'],
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'校园青春': ['#4facfe', '#00f2fe'],
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'修仙玄幻': ['#43e97b', '#38f9d7'],
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'穿越重生': ['#fa709a', '#fee140'],
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'职场商战': ['#30cfd0', '#330867'],
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'科幻未来': ['#a8edea', '#fed6e3'],
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'恐怖惊悚': ['#434343', '#000000'],
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'搞笑轻喜': ['#f6d365', '#fda085']
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};
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return gradients[category] || ['#667eea', '#764ba2'];
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}
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formatNumber(num) {
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if (!num) return '0';
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if (num >= 10000) return (num / 10000).toFixed(1) + 'w';
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if (num >= 1000) return (num / 1000).toFixed(1) + 'k';
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return num.toString();
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}
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truncateText(ctx, text, maxWidth) {
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if (!text) return '';
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if (ctx.measureText(text).width <= maxWidth) return text;
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let t = text;
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while (t.length > 0 && ctx.measureText(t + '...').width > maxWidth) t = t.slice(0, -1);
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return t + '...';
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}
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roundRect(ctx, x, y, w, h, r) {
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ctx.beginPath();
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ctx.moveTo(x + r, y);
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ctx.lineTo(x + w - r, y);
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ctx.quadraticCurveTo(x + w, y, x + w, y + r);
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ctx.lineTo(x + w, y + h - r);
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ctx.quadraticCurveTo(x + w, y + h, x + w - r, y + h);
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ctx.lineTo(x + r, y + h);
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ctx.quadraticCurveTo(x, y + h, x, y + h - r);
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ctx.lineTo(x, y + r);
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ctx.quadraticCurveTo(x, y, x + r, y);
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ctx.closePath();
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}
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onTouchStart(e) {
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const touch = e.touches[0];
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this.lastTouchY = touch.clientY;
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this.lastTouchX = touch.clientX;
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this.touchStartX = touch.clientX;
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this.touchStartY = touch.clientY;
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this.hasMoved = false;
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if (touch.clientY >= 90 && touch.clientY <= 130) {
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this.isCategoryDragging = true;
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this.isDragging = false;
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} else {
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this.isCategoryDragging = false;
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this.isDragging = true;
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}
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this.scrollVelocity = 0;
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}
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onTouchMove(e) {
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const touch = e.touches[0];
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if (this.isCategoryDragging) {
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const deltaX = this.lastTouchX - touch.clientX;
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if (Math.abs(deltaX) > 2) this.hasMoved = true;
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this.categoryScrollX += deltaX;
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this.categoryScrollX = Math.max(0, Math.min(this.categoryScrollX, this.maxCategoryScrollX));
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this.lastTouchX = touch.clientX;
|
|
return;
|
|
}
|
|
|
|
if (this.isDragging) {
|
|
const deltaY = this.lastTouchY - touch.clientY;
|
|
if (Math.abs(touch.clientY - this.touchStartY) > 5) this.hasMoved = true;
|
|
this.scrollVelocity = deltaY;
|
|
this.scrollY += deltaY;
|
|
this.scrollY = Math.max(0, Math.min(this.scrollY, this.maxScrollY));
|
|
this.lastTouchY = touch.clientY;
|
|
}
|
|
}
|
|
|
|
onTouchEnd(e) {
|
|
this.isDragging = false;
|
|
this.isCategoryDragging = false;
|
|
if (this.hasMoved) return;
|
|
|
|
const touch = e.changedTouches[0];
|
|
const x = touch.clientX;
|
|
const y = touch.clientY;
|
|
|
|
// 底部Tab点击
|
|
if (y > this.screenHeight - 60) {
|
|
const tabW = this.screenWidth / 4;
|
|
const tabIndex = Math.floor(x / tabW);
|
|
this.handleBottomTabClick(tabIndex);
|
|
return;
|
|
}
|
|
|
|
// 内容源Tab点击
|
|
if (this.contentTabRects) {
|
|
for (const rect of this.contentTabRects) {
|
|
if (x >= rect.x && x <= rect.x + rect.width && y >= rect.y && y <= rect.y + rect.height) {
|
|
if (this.contentTab !== rect.index) {
|
|
this.contentTab = rect.index;
|
|
this.scrollY = 0;
|
|
this.calculateMaxScroll();
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
// 分类点击
|
|
if (y >= 90 && y <= 130) {
|
|
this.handleCategoryClick(x);
|
|
return;
|
|
}
|
|
|
|
// 故事卡片点击
|
|
this.handleStoryClick(x, y);
|
|
}
|
|
|
|
handleCategoryClick(x) {
|
|
const adjustedX = x + this.categoryScrollX;
|
|
for (const rect of this.categoryRects) {
|
|
if (adjustedX >= rect.left && adjustedX <= rect.right) {
|
|
if (this.selectedCategory !== rect.index) {
|
|
this.selectedCategory = rect.index;
|
|
this.scrollY = 0;
|
|
this.calculateMaxScroll();
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
handleBottomTabClick(tabIndex) {
|
|
if (tabIndex === this.bottomTab && tabIndex === 0) return;
|
|
|
|
if (tabIndex === 0) {
|
|
this.bottomTab = 0;
|
|
} else if (tabIndex === 1) {
|
|
// 发现页（可跳转或在本页切换）
|
|
this.bottomTab = 1;
|
|
} else if (tabIndex === 2) {
|
|
// 创作页
|
|
this.main.sceneManager.switchScene('aiCreate');
|
|
} else if (tabIndex === 3) {
|
|
// 我的
|
|
this.main.sceneManager.switchScene('profile');
|
|
}
|
|
}
|
|
|
|
handleStoryClick(x, y) {
|
|
const startY = 140;
|
|
const cardHeight = 130;
|
|
const cardMargin = 12;
|
|
const stories = this.getFilteredStories();
|
|
const adjustedY = y + this.scrollY;
|
|
const index = Math.floor((adjustedY - startY) / (cardHeight + cardMargin));
|
|
|
|
if (index >= 0 && index < stories.length) {
|
|
const story = stories[index];
|
|
this.main.sceneManager.switchScene('story', { storyId: story.id });
|
|
}
|
|
}
|
|
}
|