mirror of
https://github.com/OpenDiablo2/OpenDiablo2
synced 2024-06-11 18:20:42 +00:00
894c60f77a
* Fixed NaN on normalize 0 vector. * Tentative implementation in getStepLength. * mapEntity.TileX/Y removed. * Fixed Position and Target not being initialised in createMapEntity. * mapEntity.Position is no longer embedded. * mapEntity.LocationX/Y no longer used outside map_entity.go. * mapEntity.subCellX/Y removed. * mapEntity.LocationX/Y removed. * mapEntity.OffsetX/Y and TargetX/Y removed. * Direction method added to Vector, returns 0-64 direction. * Moved Vector.Direction() to Position.DirectionTo and refactored. * Renamed RenderOffset from SubCell and tested IsZero. * d2math.WrapInt added for use with directions. * Tidied up position and tests. * Refactored d2common.AdjustWithRemainder into d2mapEntity. * Tidying up d2mapEntity. * Final cleanup. * Lint warnings. * Spelling correction.
88 lines
1.4 KiB
Go
88 lines
1.4 KiB
Go
package d2common
|
|
|
|
import (
|
|
"math"
|
|
)
|
|
|
|
// MinInt returns the minimum of the given values
|
|
func MinInt(a, b int) int {
|
|
if a < b {
|
|
return a
|
|
}
|
|
|
|
return b
|
|
}
|
|
|
|
// MaxInt returns the maximum of the given values
|
|
func MaxInt(a, b int) int {
|
|
if a > b {
|
|
return a
|
|
}
|
|
|
|
return b
|
|
}
|
|
|
|
// Min returns the lower of two values
|
|
func Min(a, b uint32) uint32 {
|
|
if a < b {
|
|
return a
|
|
}
|
|
|
|
return b
|
|
}
|
|
|
|
// Max returns the higher of two values
|
|
func Max(a, b uint32) uint32 {
|
|
if a > b {
|
|
return a
|
|
}
|
|
|
|
return b
|
|
}
|
|
|
|
// MaxInt32 returns the higher of two values
|
|
func MaxInt32(a, b int32) int32 {
|
|
if a > b {
|
|
return a
|
|
}
|
|
|
|
return b
|
|
}
|
|
|
|
// AbsInt32 returns the absolute of the given int32
|
|
func AbsInt32(a int32) int32 {
|
|
if a < 0 {
|
|
return -a
|
|
}
|
|
|
|
return a
|
|
}
|
|
|
|
// MinInt32 returns the higher of two values
|
|
func MinInt32(a, b int32) int32 {
|
|
if a < b {
|
|
return a
|
|
}
|
|
|
|
return b
|
|
}
|
|
|
|
// BytesToInt32 converts 4 bytes to int32
|
|
|
|
// IsoToScreen converts isometric coordinates to screenspace coordinates
|
|
|
|
// ScreenToIso converts screenspace coordinates to isometric coordinates
|
|
|
|
// GetRadiansBetween returns the radians between two points. 0rad is facing to the right.
|
|
func GetRadiansBetween(p1X, p1Y, p2X, p2Y float64) float64 {
|
|
deltaY := p2Y - p1Y
|
|
deltaX := p2X - p1X
|
|
|
|
return math.Atan2(deltaY, deltaX)
|
|
}
|
|
|
|
// AlmostEqual returns true if two values are within threshold from each other
|
|
func AlmostEqual(a, b, threshold float64) bool {
|
|
return math.Abs(a-b) <= threshold
|
|
}
|