Get SaW maps displaying

This seems like a significant performance boost. I get 60fps now \o/

cmd/loader/main.go

@@ -127,13 +127,14 @@ func loadMapsFrom(part string) {
 
 	log.Printf("Maps in %s:", mapsPath)
 	for key, gameMap := range gameMaps {
+		rect := gameMap.Rect()
 		hdr := gameMap.Header
 		fmt.Printf(
 			"    * `%s`: IsCampaignMap=%v W=%v:%v L=%v:%v SetName=%s\n",
 			key,
 			hdr.IsCampaignMap,
-			hdr.MinWidth, hdr.MaxWidth,
+			rect.Min.X, rect.Max.X,
-			hdr.MinLength, hdr.MaxLength,
+			rect.Min.Y, rect.Max.Y,
 			string(hdr.SetName[:]),
 		)
 	}

cmd/view-minimap/main.go

@@ -172,18 +172,15 @@ func (e *env) Update(screenX, screenY int) error {
 
 func (e *env) Draw(screen *ebiten.Image) error {
 	gameMap := e.gameMap
-	imd, err := ebiten.NewImage(
+	rect := gameMap.Rect()
-		int(gameMap.MaxWidth),
+	imd, err := ebiten.NewImage(rect.Dx(), rect.Dy(), ebiten.FilterDefault)
-		int(gameMap.MaxLength),
-		ebiten.FilterDefault,
-	)
 
 	if err != nil {
 		return err
 	}
 
-	for y := int(gameMap.MinLength); y < int(gameMap.MaxLength); y++ {
+	for y := int(rect.Min.Y); y < int(rect.Max.Y); y++ {
-		for x := int(gameMap.MinWidth); x < int(gameMap.MaxWidth); x++ {
+		for x := int(rect.Min.X); x < int(rect.Max.X); x++ {
 			cell := gameMap.Cells.At(x, y, int(e.state.zIdx))
 			imd.Set(x, y, makeColour(&cell, e.state.cellIdx))
 		}

go.mod

@@ -1,11 +1,11 @@
 module code.ur.gs/lupine/ordoor
 
-go 1.12
+go 1.14
 
 require (
 	github.com/BurntSushi/toml v0.3.1
 	github.com/emef/bitfield v0.0.0-20170503144143-7d3f8f823065
-	github.com/hajimehoshi/ebiten v1.11.0
+	github.com/hajimehoshi/ebiten v1.11.1
 	github.com/jfreymuth/oggvorbis v1.0.1 // indirect
 	github.com/kr/text v0.2.0 // indirect
 	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect

go.sum

@@ -19,6 +19,8 @@ github.com/hajimehoshi/ebiten v1.11.0-alpha.2.0.20200101150127-38815ba801a5 h1:h
 github.com/hajimehoshi/ebiten v1.11.0-alpha.2.0.20200101150127-38815ba801a5/go.mod h1:0SLvfr8iI2NxzpNB/olBM+dLN9Ur5a9szG13wOgQ0nQ=
 github.com/hajimehoshi/ebiten v1.11.0 h1:+pIxfzfVgRbHGM7wBAJtgzPiWiZopA7lyIKNQqc9amk=
 github.com/hajimehoshi/ebiten v1.11.0/go.mod h1:aDEhx0K9gSpXw3Cxf2hCXDxPSoF8vgjNqKxrZa/B4Dg=
+github.com/hajimehoshi/ebiten v1.11.1 h1:7gy2bHBDNtfTh3GlcUAilk3lNWW9fTLaP7iZAodS9F8=
+github.com/hajimehoshi/ebiten v1.11.1/go.mod h1:aDEhx0K9gSpXw3Cxf2hCXDxPSoF8vgjNqKxrZa/B4Dg=
 github.com/hajimehoshi/go-mp3 v0.2.1 h1:DH4ns3cPv39n3cs8MPcAlWqPeAwLCK8iNgqvg0QBWI8=
 github.com/hajimehoshi/go-mp3 v0.2.1/go.mod h1:Rr+2P46iH6PwTPVgSsEwBkon0CK5DxCAeX/Rp65DCTE=
 github.com/hajimehoshi/oto v0.3.4/go.mod h1:PgjqsBJff0efqL2nlMJidJgVJywLn6M4y8PI4TfeWfA=

internal/maps/maps.go

@@ -15,8 +15,8 @@ import (
 )
 
 var (
-	expectedMagic         = []byte("\x08\x00WHMAP\x00")
+	expectedMagic         = []byte("\x15\x00AMB_MAP\x00")
-	expectedSetNameOffset = uint32(0x34)
+	expectedSetNameOffset = uint32(0x10)
 	notImplemented        = fmt.Errorf("Not implemented")
 )
 
@@ -25,35 +25,25 @@ const (
 	MaxLength = 100 // Y coordinate
 	MaxWidth  = 130 // X coordinate
 
-	CellSize = 16 // seems to be
+	CellSize = 13 // seems to be
 
-	cellDataOffset = 0x110 // definitely
+	cellDataOffset = 0xc0
 	cellCount      = MaxHeight * MaxLength * MaxWidth
 )
 
 type Header struct {
-	IsCampaignMap uint32 // Tentatively: 0 = no, 1 = yes
+	Magic   [10]byte // "\x15\x00AMB_MAP\x00"
-	MinWidth      uint32
-	MinLength     uint32
-	MaxWidth      uint32
-	MaxLength     uint32
-	Unknown1      uint32
-	Unknown2      uint32
-	Unknown3      uint32
-	Unknown4      uint32
-	Magic         [8]byte // "\x08\x00WHMAP\x00"
-	Unknown5      uint32
-	Unknown6      uint32
 	SetName [8]byte  // Links to a filename in `/Sets/*.set`
 	// Need to investigate the rest of the header too
+	IsCampaignMap byte
 }
 
 func (h Header) Width() int {
-	return int(h.MaxWidth - h.MinWidth)
+	return MaxWidth
 }
 
 func (h Header) Length() int {
-	return int(h.MaxLength - h.MinLength)
+	return MaxLength
 }
 
 func (h Header) Height() int {
@@ -80,7 +70,7 @@ type ObjRef struct {
 
 // The index into a set palette to retrieve the object
 func (o ObjRef) Index() int {
-	return int(o.AreaByte)
+	return int(o.AreaByte & 0x7f)
 }
 
 func (o ObjRef) Sprite() int {
@@ -91,12 +81,13 @@ func (o ObjRef) Sprite() int {
 // The top bit seems to say whether we should draw or not.
 func (o ObjRef) IsActive() bool {
 	return (o.SpriteAndFlagByte & 0x80) == 0x80
-}
+} // PARIS is 78 x 60 x 7
-
+//          4E   3C   7
+/*
 type Cell struct {
 	DoorAndCanisterRelated    byte
-	DoorLockAndReactorRelated byte
+//	DoorLockAndReactorRelated byte
-	Unknown2                  byte
+//	Unknown2                  byte
 	Surface                   ObjRef
 	Left                      ObjRef
 	Right                     ObjRef
@@ -105,43 +96,60 @@ type Cell struct {
 	Unknown12                 byte
 	Unknown13                 byte
 	Unknown14                 byte
-	SquadRelated              byte
+//	SquadRelated              byte
+}*/
+
+type Cell struct {
+	Unknown1 byte
+	Surface  ObjRef
+	Left     ObjRef
+	Right    ObjRef
+	Center   ObjRef
+	Unknown2 [4]byte
+
+	/*
+	   	DoorAndCanisterRelated    byte
+	   //	DoorLockAndReactorRelated byte
+	   //	Unknown2                  byte
+	   	Surface                   ObjRef
+	   	Left                      ObjRef
+	   	Right                     ObjRef
+	   	Center                    ObjRef
+	   	Unknown11                 byte
+	   	Unknown12                 byte
+	   	Unknown13                 byte
+	   	Unknown14                 byte
+	   	SquadRelated              byte*/
 }
 
 func (c *Cell) At(n int) byte {
 	switch n {
 	case 0:
-		return c.DoorAndCanisterRelated
+		return c.Unknown1
 	case 1:
-		return c.DoorLockAndReactorRelated
-	case 2:
-		return c.Unknown2
-	case 3:
 		return c.Surface.AreaByte
-	case 4:
+	case 2:
 		return c.Surface.SpriteAndFlagByte
-	case 5:
+	case 3:
 		return c.Left.AreaByte
-	case 6:
+	case 4:
 		return c.Left.SpriteAndFlagByte
-	case 7:
+	case 5:
 		return c.Right.AreaByte
-	case 8:
+	case 6:
 		return c.Right.SpriteAndFlagByte
-	case 9:
+	case 7:
 		return c.Center.AreaByte
-	case 10:
+	case 8:
 		return c.Center.SpriteAndFlagByte
+	case 9:
+		return c.Unknown2[0]
+	case 10:
+		return c.Unknown2[1]
 	case 11:
-		return c.Unknown11
+		return c.Unknown2[2]
 	case 12:
-		return c.Unknown12
+		return c.Unknown2[3]
-	case 13:
-		return c.Unknown13
-	case 14:
-		return c.Unknown14
-	case 15:
-		return c.SquadRelated
 	}
 
 	return 0
@@ -150,15 +158,23 @@ func (c *Cell) At(n int) byte {
 // Cells is always a fixed size; use At to get a cell according to x,y,z
 type Cells []Cell
 
+// 6 Possibilities for being laid out in memory. Most likely:
+// XXYYZZ
+// OR
+// XYZXYZ
+
 func (c Cells) At(x, y, z int) Cell {
-	return c[(z*MaxLength*MaxWidth)+(y*MaxWidth)+x]
+	//	log.Printf("At (%v,%v,%v)=%v", x, y, z, x*y*z)
+	return c[(z*MaxLength*MaxWidth)+
+		(y*MaxWidth)+
+		x]
 }
 
 func (h Header) Check() []error {
 	var out []error
-	if h.IsCampaignMap > 1 {
+	//	if h.IsCampaignMap > 1 {
-		out = append(out, fmt.Errorf("Expected 0 or 1 for IsCampaignMap, got %v", h.IsCampaignMap))
+	//		out = append(out, fmt.Errorf("Expected 0 or 1 for IsCampaignMap, got %v", h.IsCampaignMap))
-	}
+	//	}
 
 	if bytes.Compare(expectedMagic, h.Magic[:]) != 0 {
 		out = append(out, fmt.Errorf("Unexpected magic value: %v", h.Magic))
@@ -176,10 +192,10 @@ type GameMap struct {
 
 func (m *GameMap) Rect() image.Rectangle {
 	return image.Rect(
-		int(m.Header.MinWidth),
+		int(0),
-		int(m.Header.MinLength),
+		int(0),
-		int(m.Header.MaxWidth),
+		int(m.Width()-1),
-		int(m.Header.MaxLength),
+		int(m.Length()-1),
 	)
 }
 

internal/palettes/palettes.go

@@ -6,7 +6,7 @@ import (
 )
 
 // Override this to change the palette globally
-const DefaultPaletteName = "ChaosGate"
+const DefaultPaletteName = "SoldiersAtWar"
 
 var (
 	Transparent = color.RGBA{R: 0, G: 0, B: 0, A: 0}