mirror of
https://github.com/OpenDiablo2/OpenDiablo2
synced 2024-09-05 19:14:14 -04:00
67 lines
1.1 KiB
Go
67 lines
1.1 KiB
Go
package d2helper
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// Min returns the lower of two values
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func Min(a, b uint32) uint32 {
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if a < b {
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return a
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}
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return b
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}
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// Max returns the higher of two values
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func Max(a, b uint32) uint32 {
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if a > b {
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return a
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}
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return b
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}
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// MaxInt32 returns the higher of two values
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func MaxInt32(a, b int32) int32 {
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if a > b {
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return a
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}
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return b
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}
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func NextPow2(x int32) int32 {
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result := int32(1)
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for result < x {
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result *= 2
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}
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return result
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}
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func AbsInt32(a int32) int32 {
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if a < 0 {
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return -a
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}
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return a
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}
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// MinInt32 returns the higher of two values
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func MinInt32(a, b int32) int32 {
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if a < b {
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return a
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}
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return b
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}
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// BytesToInt32 converts 4 bytes to int32
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func BytesToInt32(b []byte) int32 {
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// equivalnt of return int32(binary.LittleEndian.Uint32(b))
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return int32(uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24)
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}
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func IsoToScreen(isoX, isoY, modX, modY int) (int, int) {
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screenX := (isoX - isoY) * 80
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screenY := (isoX + isoY) * 40
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return screenX + modX, screenY + modY
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}
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func ScreenToIso(sx, sy float64) (float64, float64) {
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x := (sx/80 + sy/40) / 2
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y := (sy/40 - (sx / 80)) / 2
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return x, y
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}
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