75 lines
1.8 KiB
Go
75 lines
1.8 KiB
Go
package d2ds1
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import (
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2datautils"
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)
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const (
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prop1Bitmask = 0x000000FF
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prop1Offset = 0
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prop1Length = 8
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sequenceBitmask = 0x00003F00
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sequenceOffset = 8
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sequenceLength = 6
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unknown1Bitmask = 0x000FC000
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unknown1Offset = 14
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unknown1Length = 6
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styleBitmask = 0x03F00000
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styleOffset = 20
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styleLength = 6
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unknown2Bitmask = 0x7C000000
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unknown2Offset = 26
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unknown2Length = 5
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hiddenBitmask = 0x80000000
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hiddenOffset = 31
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hiddenLength = 1
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)
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type floorShadow struct {
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Prop1 byte
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Sequence byte
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Unknown1 byte
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Style byte
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Unknown2 byte
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HiddenBytes byte
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RandomIndex byte
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Animated bool
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YAdjust int
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}
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// Floor represents a floor record in a DS1 file. (it is just an alias of floorShadow).
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type Floor = floorShadow
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// Shadow represents a shadow record in a DS1 file. (it is just an alias of floorShadow).
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type Shadow = floorShadow
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// Hidden returns if floor/shadow is hidden
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func (f *Floor) Hidden() bool {
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return f.HiddenBytes > 0
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}
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// Decode decodes floor-shadow record
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func (f *floorShadow) Decode(dw uint32) {
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f.Prop1 = byte((dw & prop1Bitmask) >> prop1Offset)
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f.Sequence = byte((dw & sequenceBitmask) >> sequenceOffset)
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f.Unknown1 = byte((dw & unknown1Bitmask) >> unknown1Offset)
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f.Style = byte((dw & styleBitmask) >> styleOffset)
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f.Unknown2 = byte((dw & unknown2Bitmask) >> unknown2Offset)
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f.HiddenBytes = byte((dw & hiddenBitmask) >> hiddenOffset)
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}
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// Encode adds Floor's bits to stream writter given
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func (f *floorShadow) Encode(sw *d2datautils.StreamWriter) {
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sw.PushBits32(uint32(f.Prop1), prop1Length)
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sw.PushBits32(uint32(f.Sequence), sequenceLength)
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sw.PushBits32(uint32(f.Unknown1), unknown1Length)
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sw.PushBits32(uint32(f.Style), styleLength)
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sw.PushBits32(uint32(f.Unknown2), unknown2Length)
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sw.PushBits32(uint32(f.HiddenBytes), hiddenLength)
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}
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