| index : btroops | |
| Virtual board game-aid for BattleTroops, an infantry combat simulator wargame published by FASA in 1989. |
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| author | Catalin Mititiuc <Catalin.Mititiuc@gmail.com> | 2024-03-22 16:49:57 -0700 |
|---|---|---|
| committer | Catalin Mititiuc <Catalin.Mititiuc@gmail.com> | 2024-03-22 16:49:57 -0700 |
| commit | 6ac0473a10cf56d361b21ce11824fa97357e7b52 (patch) | |
| tree | 09355d0944c149b9943753247c74b5e4a8cbacf8 | |
| parent | afadb8022dcaca2310e88e3e56079cea575e8c48 (diff) | |
Fill firing arcs to map edge
| -rw-r--r-- | index.js | 69 |
1 files changed, 65 insertions, 4 deletions
@@ -175,15 +175,76 @@ rect.addEventListener('mousemove', e => { [newX1, newY1] = edgePoint(x1px, y1px, newX1, newY1, maxXpx, maxYpx); [newX2, newY2] = edgePoint(x1px, y1px, newX2, newY2, maxXpx, maxYpx); - // var sameEdgeConditions = [ + let oppositeEdgeConditions = [ + newX1 == 0 && newX2 == maxXpx, + newX2 == 0 && newX1 == maxXpx, + newY1 == 0 && newY2 == maxYpx, + newY2 == 0 && newY1 == maxYpx + ] + + let orthogonalEdgeConditions = [ + (newX1 == 0 || newX1 == maxXpx) && (newY2 == 0 || newY2 == maxYpx), + (newX2 == 0 || newX2 == maxXpx) && (newY1 == 0 || newY1 == maxYpx), + ] + + let points; + + xDiff = x2px - x1px; + yDiff = y2px - y1px; + + if (oppositeEdgeConditions.some(e => e)) { + let cornerPoints; + + if (xDiff > 0 && yDiff > 0) { + if ((newY1 == 0 && newY2 == maxYpx) || (newY1 == maxYpx && newY2 == 0)) { + cornerPoints = [[maxXpx, 0], [maxXpx, maxYpx]]; + } else { + cornerPoints = [[maxXpx, maxYpx], [0, maxYpx]]; + } + + points = `${newX1},${newY1} ${x1px},${y1px} ${newX2},${newY2} ${cornerPoints[0]} ${cornerPoints[1]}`; + } else if (xDiff > 0 && yDiff < 0) { + if ((newY1 == 0 && newY2 == maxYpx) || (newY1 == maxYpx && newY2 == 0)) { + cornerPoints = [[maxXpx, 0], [maxXpx, maxYpx]]; + } else { + cornerPoints = [[0, 0], [maxXpx, 0]]; + } + + points = `${newX1},${newY1} ${x1px},${y1px} ${newX2},${newY2} ${cornerPoints[0]} ${cornerPoints[1]}`; + } else if (xDiff < 0 && yDiff > 0) { + if ((newY1 == 0 && newY2 == maxYpx) || (newY1 == maxYpx && newY2 == 0)) { + cornerPoints = [[0, maxYpx], [0, 0]]; + } else { + cornerPoints = [[maxXpx, maxYpx], [0, maxYpx]]; + } + + points = `${newX1},${newY1} ${x1px},${y1px} ${newX2},${newY2} ${cornerPoints[0]} ${cornerPoints[1]}`; + } else { + if ((newY1 == 0 && newY2 == maxYpx) || (newY1 == maxYpx && newY2 == 0)) { + cornerPoints = [[0, maxYpx], [0, 0]]; + } else { + cornerPoints = [[0, 0], [maxXpx, 0]]; + } + + points = `${newX1},${newY1} ${x1px},${y1px} ${newX2},${newY2} ${cornerPoints[0]} ${cornerPoints[1]}`; + } + } else if (orthogonalEdgeConditions.some(e => e)) { + let cornerPoint; - // ] + if (newX1 == 0 || newX1 == maxXpx) { + cornerPoint = [newX1, newY2]; + } else { + cornerPoint = [newX2, newY1]; + } - // if (sameEdgeConditions) + points = `${newX1},${newY1} ${x1px},${y1px} ${newX2},${newY2} ${cornerPoint}`; + } else { + points = `${newX1},${newY1} ${x1px},${y1px} ${newX2},${newY2}`; + } // p.setAttributeNS(null, 'points', `${newX},${newY} ${x1px},${y1px} ${newX},${newY}`); // p.setAttributeNS(null, 'points', `${x2px},${y2px} ${x1px},${y1px} ${x2px},${y2px}`); - p.setAttributeNS(null, 'points', `${newX1},${newY1} ${x1px},${y1px} ${newX2},${newY2}`); + p.setAttributeNS(null, 'points', points); let [newX, newY] = edgePoint(x1, y1, x2, y2, maxX, maxY); |