刘宇飞
d393302388
Adds level prefabs, theme assets, audio, extensions, and deployment scripts for the Unity WebGL migration. Co-authored-by: Cursor <cursoragent@cursor.com>
88 lines
2.2 KiB
JavaScript
88 lines
2.2 KiB
JavaScript
'use strict';
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/** 与 Unity PPU=100、Grid CellSize (1,0.5,1) 一致（世界坐标 Y 向上） */
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const CELL_PIXEL = 100;
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const HALF_W = CELL_PIXEL * 0.5;
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const HALF_H = CELL_PIXEL * 0.25;
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const PANEL_HALF_W = HALF_W;
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const PANEL_HALF_H = HALF_H;
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function worldToCellXY(wx, wy) {
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const cx = (wy / HALF_H + wx / HALF_W) * 0.5;
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const cy = (wy / HALF_H - wx / HALF_W) * 0.5;
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return { x: Math.round(cx), y: Math.round(cy) };
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}
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/** 世界坐标为格子中心时 → 格子索引（与 cellCenterCanvas 互逆） */
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function worldCenterToCellXY(wx, wy) {
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return worldToCellXY(wx, wy - HALF_H);
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}
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function cellToWorldXY(cx, cy) {
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return {
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x: (cx - cy) * HALF_W,
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y: (cx + cy) * HALF_H,
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};
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}
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function cellCenterWorldXY(cx, cy) {
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const w = cellToWorldXY(cx, cy);
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return { x: w.x, y: w.y + HALF_H };
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}
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function cellKey(x, y) {
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return `${x},${y}`;
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}
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/** 世界坐标 → Canvas（Y 向下，与 Unity/Cocos 预览一致） */
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function worldToCanvasXY(wx, wy, offsetX, offsetY) {
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return {
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x: offsetX + wx,
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y: offsetY - wy,
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};
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}
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/** 格子底顶点（Grid.CellToWorld） */
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function cellAnchorCanvas(cx, cy, offsetX, offsetY) {
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const w = cellToWorldXY(cx, cy);
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return worldToCanvasXY(w.x, w.y, offsetX, offsetY);
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}
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/** 格子中心（Unity Tilemap m_TileAnchor 0.5,0.5 → 精灵 pivot 对齐点） */
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function cellCenterCanvas(cx, cy, offsetX, offsetY) {
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const w = cellToWorldXY(cx, cy);
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return worldToCanvasXY(w.x, w.y + HALF_H, offsetX, offsetY);
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}
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/** 鼠标拾取：与贴图 pivot 相同，使用格子中心（worldCenterToCell） */
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function cellFromCanvas(mx, my, offsetX, offsetY) {
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const wx = mx - offsetX;
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const wyCenter = offsetY - my;
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const c = worldCenterToCellXY(wx, wyCenter);
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return { x: c.x, y: c.y, key: cellKey(c.x, c.y) };
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}
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function cellToCanvas(cx, cy, offsetX, offsetY) {
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const a = cellAnchorCanvas(cx, cy, offsetX, offsetY);
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return { px: a.x, py: a.y };
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}
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module.exports = {
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CELL_PIXEL,
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HALF_W,
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HALF_H,
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PANEL_HALF_W,
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PANEL_HALF_H,
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worldToCellXY,
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worldCenterToCellXY,
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cellToWorldXY,
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cellCenterWorldXY,
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cellKey,
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worldToCanvasXY,
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cellAnchorCanvas,
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cellCenterCanvas,
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cellFromCanvas,
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cellToCanvas,
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};
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