微信小程序实现拼图功能

微信小程序实现拼图

效果示例
功能描述
代码示例

效果示例

微信小程序碎片拼图

功能描述

在微信小程序中，实现一个简单的拼图小游戏。用户需要将四张碎片图片拖动到目标图片的正确位置，具体功能如下：

拖动功能：

用户可以通过手指拖动碎片图片，自由移动到目标图片的任意位置。

位置匹配：

如果碎片被拖动到正确的位置（即与目标图片的预定区域完全重叠或匹配），碎片会自动吸附到目标图片的指定位置，并显示为已完成。

如果碎片被拖动到错误的位置（未能与目标区域匹配），碎片会自动返回到初始位置。

完成检测：

当所有碎片都被正确放置后，触发完成拼图的效果（如显示完整图片、播放动画或提示成功信息）。

代码示例

html

<!-- 下方的碎片 --> <!-- 添加 data-index 以传递碎片的索引 -->
<view class="pieces">
  <view class="piece" wx:for="{{pieces}}" wx:key="id" 
    id="{{item.id}}" 
    style="left: {{item.left}}px; top: {{item.top}}px;" 
    data-id="{{item.id}}" 
    data-index="{{index}}"  
    bindtouchstart="onTouchStart" 
    bindtouchmove="onTouchMove" 
    bindtouchend="onTouchEnd"
    wx:if="{{!item.hidden}}"> <!-- 只有当 hidden 为 false 时才显示碎片 -->
    <image src="{{item.image}}"></image>
  </view>
</view>

</view>

css

/* pages/cssCase/puzzle1/index.wxss */
.container {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
height: 100%;
}

.puzzle-box {
margin: 20rpx;
border: 1px solid #ccc;
display: flex;
align-items: center;
justify-content: center;
flex-wrap: wrap;
padding: 20rpx;
box-sizing: border-box;
}

.puzzle-cell {
width: 300rpx;
height: 300rpx;
border: 1rpx solid #ccc;
position: relative;
}
.target-image {
width: 300rpx;
height: 300rpx;
}

.pieces {
display: flex;
justify-content: space-between;
width: 100%;
padding: 0 10rpx;
}

.piece {
width: 150rpx;
height: 150rpx;
position: absolute;
}

.piece image {
width: 100%;
height: 100%;
}

// pages/cssCase/puzzle1/index.js
Page({
data: {
puzzleCells: [
{ id: 'cell-1', image: '', correctPieceId: 'piece-1' },
{ id: 'cell-2', image: '', correctPieceId: 'piece-2' },
{ id: 'cell-3', image: '', correctPieceId: 'piece-3' },
{ id: 'cell-4', image: '', correctPieceId: 'piece-4' },
],
pieces: [
{ id: 'piece-1', image: 'https://static.sprucesmart.com/activity/shandong/jigsawPuzzle20250109/ce1.jpeg', left: 10, top: 380, originalLeft: 10, originalTop: 380, hidden: false },
{ id: 'piece-2', image: 'https://static.sprucesmart.com/activity/shandong/jigsawPuzzle20250109/ce2.jpeg', left: 120, top: 380, originalLeft: 120, originalTop: 380, hidden: false },
{ id: 'piece-3', image: 'https://static.sprucesmart.com/activity/shandong/jigsawPuzzle20250109/ce3.jpeg', left: 210, top: 380, originalLeft: 210, originalTop: 380, hidden: false },
{ id: 'piece-4', image: 'https://static.sprucesmart.com/activity/shandong/jigsawPuzzle20250109/ce4.jpeg', left: 300, top: 380, originalLeft: 300, originalTop: 380, hidden: false },
],
draggingPiece: null,
draggingPieceIndex: null, // 用于记录当前拖拽的碎片在 pieces 中的索引
},

onTouchStart(e) {
  const { id, index } = e.currentTarget.dataset;
  this.setData({
    draggingPiece: id,
    draggingPieceIndex: index,
  });
},

onTouchMove(e) {
  const { pageX, pageY } = e.touches[0];
  const updatedPieces = this.data.pieces.map((piece, index) => {
    if (index === this.data.draggingPieceIndex) {
      return { ...piece, left: pageX - 75, top: pageY - 75 }; // 让碎片跟随手指移动
    }
    return piece;
  });
  this.setData({ pieces: updatedPieces });
},

onTouchEnd(e) {
  const { draggingPiece, draggingPieceIndex } = this.data;
  if (!draggingPiece) return;

  const query = wx.createSelectorQuery();
  this.data.puzzleCells.forEach((cell) => {
    query.select(`#${cell.id}`).boundingClientRect();
  });
  query.select(`#${draggingPiece}`).boundingClientRect();

  query.exec((res) => {
    const cellRects = res.slice(0, this.data.puzzleCells.length);
    const pieceRect = res[res.length - 1];

    let placed = false;
    cellRects.forEach((cellRect, index) => {
      const cell = this.data.puzzleCells[index];
      if (cell.correctPieceId === draggingPiece && this.checkOverlap(cellRect, pieceRect)) {
        placed = true;
        this.updatePuzzleCellImage(index, this.data.pieces[draggingPieceIndex].image);
        this.hidePiece(draggingPieceIndex);
        this.updatePiecePosition(draggingPieceIndex, cellRect.left, cellRect.top);
      }
    });

    if (!placed) {
      this.resetPiecePosition(draggingPieceIndex);
    }

    this.setData({ draggingPiece: null });

    // 检查是否完成拼图
    this.checkCompletion();
  });
},

checkOverlap(box1, box2) {
  return (
    box1.left < box2.left + box2.width &&
    box1.left + box1.width > box2.left &&
    box1.top < box2.top + box2.height &&
    box1.top + box1.height > box2.top
  );
},

updatePuzzleCellImage(cellIndex, image) {
  const updatedCells = [...this.data.puzzleCells];
  updatedCells[cellIndex].image = image;
  this.setData({ puzzleCells: updatedCells });
},

hidePiece(pieceIndex) {
  const updatedPieces = this.data.pieces.map((piece, index) => {
    if (index === pieceIndex) {
      return { ...piece, hidden: true }; // 设置碎片为隐藏
    }
    return piece;
  });
  this.setData({ pieces: updatedPieces });
},

updatePiecePosition(pieceIndex, left, top) {
  const updatedPieces = this.data.pieces.map((piece, index) => {
    if (index === pieceIndex) {
      return { ...piece, left, top };
    }
    return piece;
  });
  this.setData({ pieces: updatedPieces });
},

resetPiecePosition(pieceIndex) {
  const updatedPieces = this.data.pieces.map((piece, index) => {
    if (index === pieceIndex) {
      return { ...piece, left: piece.originalLeft, top: piece.originalTop };
    }
    return piece;
  });
  this.setData({ pieces: updatedPieces });
},

// 检查拼图是否完成
checkCompletion() {
  const allPiecesPlaced = this.data.pieces.every((piece) => piece.hidden);
  if (allPiecesPlaced) {
    wx.showToast({
      title: '拼图完成！',
      icon: 'success',
      duration: 2000,
    });
  }
},

});

微信小程序 实现拼图功能

微信小程序 实现拼图

效果示例

功能描述

代码示例

微信小程序实现拼图功能

微信小程序实现拼图