/
encode.go
89 lines (78 loc) · 2.14 KB
/
encode.go
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package q3bsp
import (
"encoding/binary"
"fmt"
"io"
)
func (b *BSP) Encode(w io.WriteSeeker) error {
err := binary.Write(w, binary.LittleEndian, b.header)
if err != nil {
return fmt.Errorf("write header: %w", err)
}
err = binary.Write(w, binary.LittleEndian, int32(8024))
if err != nil {
return fmt.Errorf("entity direntries: %w", err)
}
offset := int32(0)
size := int32(len(b.EntityInfo))
offset += size
err = binary.Write(w, binary.LittleEndian, offset)
if err != nil {
return fmt.Errorf("entity offset: %w", err)
}
err = binary.Write(w, binary.LittleEndian, size)
if err != nil {
return fmt.Errorf("entity size: %w", err)
}
size = int32(len(b.Textures) * dirEntryTexturesSize)
offset += size
err = binary.Write(w, binary.LittleEndian, offset)
if err != nil {
return fmt.Errorf("texture offset: %w", err)
}
err = binary.Write(w, binary.LittleEndian, size)
if err != nil {
return fmt.Errorf("texture size: %w", err)
}
size = int32(len(b.Planes) * dirEntryPlanesSize)
offset += size
err = binary.Write(w, binary.LittleEndian, offset)
if err != nil {
return fmt.Errorf("plane offset: %w", err)
}
err = binary.Write(w, binary.LittleEndian, size)
if err != nil {
return fmt.Errorf("plane size: %w", err)
}
size = int32(len(b.Leaves) * dirEntryLeafsSize)
offset += size
err = binary.Write(w, binary.LittleEndian, offset)
if err != nil {
return fmt.Errorf("leaf offset: %w", err)
}
err = binary.Write(w, binary.LittleEndian, size)
if err != nil {
return fmt.Errorf("leaf size: %w", err)
}
size = int32(len(b.LeafFaces) * dirEntryLeaffacesSize)
offset += size
err = binary.Write(w, binary.LittleEndian, offset)
if err != nil {
return fmt.Errorf("leafface offset: %w", err)
}
err = binary.Write(w, binary.LittleEndian, size)
if err != nil {
return fmt.Errorf("leafface size: %w", err)
}
size = int32(len(b.LeafBrushes) * dirEntryLeafbrushesSize)
offset += size
err = binary.Write(w, binary.LittleEndian, offset)
if err != nil {
return fmt.Errorf("leafbrush offset: %w", err)
}
err = binary.Write(w, binary.LittleEndian, size)
if err != nil {
return fmt.Errorf("leafbrush size: %w", err)
}
return nil
}