565 lines
17 KiB
JavaScript
565 lines
17 KiB
JavaScript
/**
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* 首页场景
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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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this.currentTab = 0; // 0: 首页, 1: 发现, 2: 我的
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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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// 存储分类标签位置（用于点击判定）
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this.categoryRects = [];
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}
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async init() {
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// 加载故事列表
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this.storyList = this.main.storyManager.storyList;
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this.calculateMaxScroll();
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}
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// 获取过滤后的故事列表
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getFilteredStories() {
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if (this.selectedCategory === 0) {
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return this.storyList; // 全部
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}
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const categoryName = this.categories[this.selectedCategory];
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return this.storyList.filter(s => s.category === categoryName);
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}
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calculateMaxScroll() {
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// 计算最大滚动距离
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const stories = this.getFilteredStories();
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const cardHeight = 120;
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const gap = 15;
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const startY = 150; // 故事列表起始位置
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const tabHeight = 65;
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// 内容总高度
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const contentBottom = startY + stories.length * (cardHeight + gap);
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// 可视区域底部（减去底部Tab栏）
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const visibleBottom = this.screenHeight - tabHeight;
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// 最大滚动距离 = 内容超出可视区域的部分
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this.maxScrollY = Math.max(0, contentBottom - visibleBottom);
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}
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update() {
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// 滚动惯性
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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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// 边界检查
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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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// 绘制背景渐变（深紫蓝色调）
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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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// 添加星空装饰点
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this.renderStars(ctx);
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// 绘制顶部标题栏
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this.renderHeader(ctx);
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// 绘制分类标签
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this.renderCategories(ctx);
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// 绘制故事列表
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this.renderStoryList(ctx);
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// 绘制底部Tab栏
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this.renderTabBar(ctx);
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}
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renderStars(ctx) {
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ctx.fillStyle = 'rgba(255,255,255,0.3)';
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const stars = [[30, 80], [80, 30], [150, 60], [200, 25], [280, 70], [320, 40]];
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stars.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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// 标题带渐变
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const titleGradient = ctx.createLinearGradient(20, 30, 200, 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 26px sans-serif';
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ctx.textAlign = 'left';
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ctx.fillText('星域故事汇', 20, 50);
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// 副标题
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ctx.fillStyle = 'rgba(255,255,255,0.6)';
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ctx.font = '13px sans-serif';
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ctx.fillText('每个选择，都是一个新世界', 20, 75);
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// AI创作入口按钮
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const btnWidth = 80;
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const btnHeight = 32;
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const btnX = this.screenWidth - btnWidth - 15;
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const btnY = 35;
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const btnGradient = ctx.createLinearGradient(btnX, btnY, btnX + btnWidth, btnY);
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btnGradient.addColorStop(0, '#a855f7');
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btnGradient.addColorStop(1, '#ec4899');
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ctx.fillStyle = btnGradient;
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this.roundRect(ctx, btnX, btnY, btnWidth, btnHeight, 16);
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ctx.fill();
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ctx.fillStyle = '#ffffff';
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ctx.font = 'bold 12px sans-serif';
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ctx.textAlign = 'center';
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ctx.fillText('✨ AI创作', btnX + btnWidth / 2, btnY + 21);
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this.aiCreateBtnRect = { x: btnX, y: btnY, width: btnWidth, height: btnHeight };
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}
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renderCategories(ctx) {
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const startY = 95;
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const tagHeight = 30;
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let x = 15 - this.categoryScrollX;
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const y = startY;
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// 计算总宽度用于滚动限制
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ctx.font = '13px 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 + 28 + 12;
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});
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this.maxCategoryScrollX = Math.max(0, totalWidth - this.screenWidth + 15);
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// 清空并重新记录位置
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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 + 28;
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// 记录每个标签的位置
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this.categoryRects.push({
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left: x + this.categoryScrollX,
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right: x + this.categoryScrollX + textWidth,
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index: index
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});
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// 只渲染可见的标签
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if (x + textWidth > 0 && x < this.screenWidth) {
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if (isSelected) {
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// 选中态：渐变背景
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const tagGradient = ctx.createLinearGradient(x, y, x + textWidth, y);
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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, y, textWidth, tagHeight, 15);
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ctx.fill();
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// 未选中态加边框
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if (!isSelected) {
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ctx.strokeStyle = 'rgba(255,255,255,0.15)';
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ctx.lineWidth = 1;
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this.roundRect(ctx, x, y, textWidth, tagHeight, 15);
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ctx.stroke();
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}
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// 标签文字
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ctx.fillStyle = isSelected ? '#ffffff' : 'rgba(255,255,255,0.7)';
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ctx.font = isSelected ? 'bold 13px sans-serif' : '13px sans-serif';
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ctx.textAlign = 'center';
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ctx.fillText(cat, x + textWidth / 2, y + 20);
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}
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x += textWidth + 12;
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});
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}
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renderStoryList(ctx) {
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const startY = 150;
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const cardHeight = 120;
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const cardPadding = 15;
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const cardMargin = 15;
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const stories = this.getFilteredStories();
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if (stories.length === 0) {
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ctx.fillStyle = '#666666';
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ctx.font = '14px sans-serif';
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ctx.textAlign = 'center';
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ctx.fillText('暂无该分类的故事', this.screenWidth / 2, 250);
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return;
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}
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// 设置裁剪区域，防止卡片渲染到分类标签区域
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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 - 65);
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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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// 只渲染可见区域的卡片
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if (y > startY - cardHeight && y < this.screenHeight - 65) {
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this.renderStoryCard(ctx, story, cardMargin, y, this.screenWidth - cardMargin * 2, 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 - 毛玻璃效果
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ctx.fillStyle = 'rgba(255,255,255,0.06)';
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this.roundRect(ctx, x, y, width, height, 16);
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ctx.fill();
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// 卡片高光边框
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ctx.strokeStyle = 'rgba(255,255,255,0.1)';
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ctx.lineWidth = 1;
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this.roundRect(ctx, x, y, width, height, 16);
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ctx.stroke();
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// 封面区域 - 渐变色
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const coverWidth = 85;
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const coverHeight = height - 24;
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const coverGradient = ctx.createLinearGradient(x + 12, y + 12, x + 12 + coverWidth, y + 12 + coverHeight);
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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 + 12, y + 12, coverWidth, coverHeight, 12);
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ctx.fill();
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// 封面上的分类名
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ctx.fillStyle = 'rgba(255,255,255,0.9)';
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ctx.font = 'bold 11px sans-serif';
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ctx.textAlign = 'center';
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ctx.fillText(story.category || '故事', x + 12 + coverWidth / 2, y + 12 + coverHeight / 2 + 4);
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// 故事标题
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ctx.fillStyle = '#ffffff';
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ctx.font = 'bold 17px sans-serif';
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ctx.textAlign = 'left';
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const titleX = x + 110;
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const maxTextWidth = width - 120; // 可用文字宽度
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const title = this.truncateText(ctx, story.title, maxTextWidth);
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ctx.fillText(title, titleX, y + 35);
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// 故事简介
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ctx.fillStyle = 'rgba(255,255,255,0.5)';
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ctx.font = '12px sans-serif';
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const desc = story.description || '';
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const shortDesc = this.truncateText(ctx, desc, maxTextWidth);
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ctx.fillText(shortDesc, titleX, y + 58);
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// 统计信息带图标
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ctx.fillStyle = 'rgba(255,255,255,0.4)';
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ctx.font = '11px sans-serif';
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const playText = `▶ ${this.formatNumber(story.play_count)}`;
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const likeText = `♥ ${this.formatNumber(story.like_count)}`;
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ctx.fillText(playText, titleX, y + 90);
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ctx.fillText(likeText, titleX + 70, y + 90);
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// 精选标签 - 更醒目
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if (story.is_featured) {
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const tagGradient = ctx.createLinearGradient(x + width - 55, y + 12, x + width - 10, y + 12);
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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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this.roundRect(ctx, x + width - 55, y + 12, 45, 22, 11);
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ctx.fill();
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ctx.fillStyle = '#ffffff';
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ctx.font = 'bold 10px sans-serif';
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ctx.textAlign = 'center';
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ctx.fillText('精选', x + width - 32, y + 27);
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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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renderTabBar(ctx) {
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const tabHeight = 65;
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const y = this.screenHeight - tabHeight;
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// Tab栏背景 - 毛玻璃
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ctx.fillStyle = 'rgba(15, 12, 41, 0.95)';
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ctx.fillRect(0, y, this.screenWidth, tabHeight);
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// 顶部高光线
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const lineGradient = ctx.createLinearGradient(0, y, this.screenWidth, y);
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lineGradient.addColorStop(0, 'rgba(255,107,107,0.3)');
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lineGradient.addColorStop(0.5, 'rgba(255,215,0,0.3)');
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lineGradient.addColorStop(1, 'rgba(255,107,107,0.3)');
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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: '我的' }
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];
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const tabWidth = this.screenWidth / tabs.length;
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tabs.forEach((tab, index) => {
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const centerX = index * tabWidth + tabWidth / 2;
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const isActive = index === this.currentTab;
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// 选中态指示器
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if (isActive) {
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const indicatorGradient = ctx.createLinearGradient(centerX - 20, y + 3, centerX + 20, y + 3);
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indicatorGradient.addColorStop(0, '#ff6b6b');
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indicatorGradient.addColorStop(1, '#ffd700');
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ctx.fillStyle = indicatorGradient;
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this.roundRect(ctx, centerX - 20, y + 2, 40, 3, 1.5);
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ctx.fill();
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}
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// 图标
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ctx.font = '22px sans-serif';
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ctx.textAlign = 'center';
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ctx.fillText(tab.icon, centerX, y + 32);
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// 标签文字
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ctx.fillStyle = isActive ? '#ffffff' : 'rgba(255,255,255,0.4)';
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ctx.font = isActive ? 'bold 11px sans-serif' : '11px sans-serif';
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ctx.fillText(tab.label, centerX, y + 52);
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});
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}
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// 获取分类颜色
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getCategoryColor(category) {
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const colors = {
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'都市言情': '#e94560',
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'悬疑推理': '#4a90d9',
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'古风宫廷': '#d4a574',
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'校园青春': '#7ed957',
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'修仙玄幻': '#9b59b6',
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'穿越重生': '#f39c12',
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'职场商战': '#3498db',
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'科幻未来': '#1abc9c',
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'恐怖惊悚': '#2c3e50',
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'搞笑轻喜': '#f1c40f'
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};
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return colors[category] || '#666666';
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}
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// 格式化数字
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formatNumber(num) {
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if (num >= 10000) {
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return (num / 10000).toFixed(1) + 'w';
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}
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if (num >= 1000) {
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return (num / 1000).toFixed(1) + 'k';
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}
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return num.toString();
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}
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// 截断文字以适应宽度
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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) {
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return text;
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}
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let truncated = text;
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while (truncated.length > 0 && ctx.measureText(truncated + '...').width > maxWidth) {
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truncated = truncated.slice(0, -1);
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}
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return truncated + '...';
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}
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// 绘制圆角矩形
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roundRect(ctx, x, y, width, height, radius) {
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ctx.beginPath();
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ctx.moveTo(x + radius, y);
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ctx.lineTo(x + width - radius, y);
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ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
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ctx.lineTo(x + width, y + height - radius);
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ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
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ctx.lineTo(x + radius, y + height);
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ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
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ctx.lineTo(x, y + radius);
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ctx.quadraticCurveTo(x, y, x + radius, 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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// 判断是否在分类区域（y: 90-140）
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if (touch.clientY >= 90 && touch.clientY <= 140) {
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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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// 分类区域横向滑动
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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) {
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this.hasMoved = true;
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}
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this.categoryScrollX += deltaX;
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this.categoryScrollX = Math.max(0, Math.min(this.categoryScrollX, this.maxCategoryScrollX));
|
||
this.lastTouchX = touch.clientX;
|
||
return;
|
||
}
|
||
|
||
// 故事列表纵向滑动
|
||
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;
|
||
|
||
// 如果有滑动，不处理点击
|
||
if (this.hasMoved) {
|
||
return;
|
||
}
|
||
|
||
// 检测点击
|
||
const touch = e.changedTouches[0];
|
||
const x = touch.clientX;
|
||
const y = touch.clientY;
|
||
|
||
// 检测AI创作按钮点击
|
||
if (this.aiCreateBtnRect) {
|
||
const btn = this.aiCreateBtnRect;
|
||
if (x >= btn.x && x <= btn.x + btn.width && y >= btn.y && y <= btn.y + btn.height) {
|
||
this.main.sceneManager.switchScene('aiCreate');
|
||
return;
|
||
}
|
||
}
|
||
|
||
// 检测Tab栏点击
|
||
if (y > this.screenHeight - 65) {
|
||
const tabWidth = this.screenWidth / 3;
|
||
const tabIndex = Math.floor(x / tabWidth);
|
||
this.handleTabClick(tabIndex);
|
||
return;
|
||
}
|
||
|
||
// 检测分类标签点击
|
||
if (y >= 90 && y <= 140) {
|
||
this.handleCategoryClick(x);
|
||
return;
|
||
}
|
||
|
||
// 检测故事卡片点击
|
||
this.handleStoryClick(x, y);
|
||
}
|
||
|
||
handleCategoryClick(x) {
|
||
// 考虑横向滚动偏移
|
||
const adjustedX = x + this.categoryScrollX;
|
||
|
||
// 使用保存的实际位置判断
|
||
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();
|
||
console.log('选中分类:', this.categories[rect.index]);
|
||
}
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
handleTabClick(tabIndex) {
|
||
if (tabIndex === this.currentTab) return;
|
||
|
||
this.currentTab = tabIndex;
|
||
|
||
if (tabIndex === 2) {
|
||
// 切换到个人中心
|
||
this.main.sceneManager.switchScene('profile');
|
||
}
|
||
}
|
||
|
||
handleStoryClick(x, y) {
|
||
const startY = 150;
|
||
const cardHeight = 120;
|
||
const cardMargin = 15;
|
||
|
||
const stories = this.getFilteredStories();
|
||
|
||
// 计算点击的是哪个故事
|
||
const adjustedY = y + this.scrollY;
|
||
const index = Math.floor((adjustedY - startY) / (cardHeight + cardMargin));
|
||
|
||
if (index >= 0 && index < stories.length) {
|
||
const story = stories[index];
|
||
// 跳转到故事播放场景
|
||
this.main.sceneManager.switchScene('story', { storyId: story.id });
|
||
}
|
||
}
|
||
}
|