noot

palette.go

@@ -5,15 +5,16 @@ import (
 	"fmt"
 	"image/color"
 	"io"
+	"log"
 )
 
 type PaletteSection struct {
-	Version    uint32
-	Params     [4]uint32
-	Divided    bool
-	DataLength uint32
-	Palette    [256]color.Color
-	MainBound  [2]uint32
+	Version          uint32
+	Params           [4]uint32
+	OpaqueIndexCount uint32
+	DataLength       uint32
+	Palette          [256]*color.RGBA
+	MainBounds       [2]uint32
 
 	lastSignature [4]byte
 }
@@ -25,18 +26,16 @@ func (p *PaletteSection) Decode(rd io.Reader) error {
 	if sig, target := string(p.lastSignature[:]), "PAL_"; sig != target {
 		return fmt.Errorf("bad sig: want %s, got %s", target, sig)
 	}
-	p.Palette = [256]color.Color{}
+	p.Palette = [256]*color.RGBA{}
 	if err := binary.Read(rd, end, &p.Version); err != nil {
 		return err
 	}
 	if err := binary.Read(rd, end, p.Params[:]); err != nil {
 		return err
 	}
-	var cast uint32
-	if err := binary.Read(rd, end, &cast); err != nil {
+	if err := binary.Read(rd, end, &p.OpaqueIndexCount); err != nil {
 		return err
 	}
-	p.Divided = (cast > 0)
 	if err := binary.Read(rd, end, &p.DataLength); err != nil {
 		return err
 	}
@@ -58,10 +57,30 @@ func (p *PaletteSection) Decode(rd io.Reader) error {
 			alpha,
 		}
 	}
-	if p.Divided {
-		if err := binary.Read(rd, end, p.MainBound[:]); err != nil {
+
+	for i := uint32(0); i < p.OpaqueIndexCount; i++ {
+		var first uint32
+		if err := binary.Read(rd, end, &first); err != nil {
 			return err
 		}
+
+		var last uint32
+		if err := binary.Read(rd, end, &last); err != nil {
+			return err
+		}
+		log.Println("oic", p.OpaqueIndexCount, i, first, last)
+		// TODO: figure out what setBoard actually does
+		//p.setBoard(first, last, 255)
 	}
 	return nil
 }
+
+func (p *PaletteSection) setBoard(start uint32, end uint32, alpha int32) {
+	if !(start >= 0 && end >= 0 && start < 256 && end < 256) {
+		return
+	}
+
+	for i := start; i <= end; i++ {
+		p.Palette[i].A = uint8(alpha)
+	}
+}