FILES
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items\active\effects\chain.lua

DIFFS
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items\active\effects\chain.lua
14,16c14,15
<     local segmentCount = math.floor((vec2.mag(chainVec) / chain.segmentSize) + 0.5)
<     local chainAngle = vec2.angle(chainVec)
<     if chainVec[1] < 0 then chainAngle = math.pi - chainAngle end
---
>     local chainDirection = chainVec[1] < 0 and -1 or 1
>     local chainLength = vec2.mag(chainVec)
18,25c17,50
<     local segmentOffset = vec2.mul(vec2.norm(chainVec), chain.segmentSize)
<     local thisOffset = vec2.add(startPosition, vec2.mul(segmentOffset, 0.5))
<     for i = 1, segmentCount do
<       local image = chain.segmentImage
<       if i == segmentCount and chain.endSegmentImage then image = chain.endSegmentImage end
<       if chain.taper then
<         local taperFactor = 1 - ((i - 1) / segmentCount) * chain.taper
<         image = image .. "?scale=1.0=" .. util.round(taperFactor, 5)
---
>     local arcAngle = 0
>     if chain.arcRadius then
>       arcAngle = chainDirection * 2 * math.asin(chainLength / (2 * chain.arcRadius))
>       chainLength = chainDirection * arcAngle * chain.arcRadius
>     end
> 
>     local segmentCount = math.floor((chainLength / chain.segmentSize) + 0.5)
>     if segmentCount > 0 then
>       local chainStartAngle = vec2.angle(chainVec) - arcAngle / 2
>       if chainVec[1] < 0 then chainStartAngle = math.pi - chainStartAngle end
> 
>       local segmentOffset = vec2.mul(vec2.norm(chainVec), chain.segmentSize)
>       segmentOffset = vec2.rotate(segmentOffset, -arcAngle / 2)
>       local thisOffset = vec2.add(startPosition, vec2.mul(segmentOffset, 0.5))
>       local lastDrawnSegment = chain.drawPercentage and math.ceil(segmentCount * chain.drawPercentage) or segmentCount
>       for i = 1, lastDrawnSegment do
>         local image = chain.segmentImage
>         if i == lastDrawnSegment and chain.endSegmentImage then image = chain.endSegmentImage end
>         if chain.taper then
>           local taperFactor = 1 - ((i - 1) / lastDrawnSegment) * chain.taper
>           image = image .. "?scale=1.0=" .. util.round(taperFactor, 5)
>         end
>         local drawable = {
>           image = image,
>           centered = true,
>           mirrored = chainVec[1] < 0,
>           rotation = chainStartAngle + (i - 1) * chainDirection * (arcAngle / segmentCount),
>           position = thisOffset,
>           fullbright = chain.fullbright or false
>         }
>         table.insert(drawables, {drawable})
> 
>         segmentOffset = vec2.rotate(segmentOffset, arcAngle / segmentCount)
>         thisOffset = vec2.add(thisOffset, segmentOffset)
27,36d51
<       local drawable = {
<         image = image,
<         centered = true,
<         mirrored = chainVec[1] < 0,
<         rotation = chainAngle,
<         position = thisOffset,
<         fullbright = chain.fullbright or false
<       }
<       table.insert(drawables, {drawable})
<       thisOffset = vec2.add(thisOffset, segmentOffset)