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package mt
type MapBlkFlags uint8
const (
BlkIsUnderground MapBlkFlags = 1 << iota
BlkDayNightDiff
BlkLightExpired
BlkNotGenerated
)
type LitFromBlks uint16
const AlwaysLitFrom LitFromBlks = 0xf000
func LitFrom(d Dir, b LightBank) LitFromBlks {
return 1 << (uint8(d) + uint8(6*b))
}
type MapBlk struct {
Flags MapBlkFlags
LitFrom LitFromBlks
//mt:const uint8(2) // Size of param0 in bytes.
//mt:const uint8(1 + 1) // Size of param1 and param2 combined, in bytes.
Param0 [4096]Content
Param1 [4096]uint8
Param2 [4096]uint8
NodeMetas map[uint16]*NodeMeta
}
// Pos2BlkPos converts a node position to a MapBlk position and index.
func Pos2Blkpos(pos [3]int16) (blkpos [3]int16, i uint16) {
for j := range pos {
blkpos[j] = pos[j] >> 4
i |= uint16(pos[j]&0xf) << (4 * j)
}
return
}
// BlkPos2Pos converts a MapBlk position and index to a node position.
func Blkpos2Pos(blkpos [3]int16, i uint16) (pos [3]int16) {
for j := range pos {
pos[j] = blkpos[j]<<4 | int16(i>>(4*j)&0xf)
}
return
}
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