ml
73 lines
2.5 KiB
Go
73 lines
2.5 KiB
Go
package level
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// TileTextureInfo describes the textures used for a map tile.
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type TileTextureInfo uint16
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// WallTextureIndex returns the texture index into the texture atlas for the walls.
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// Valid range [0..63].
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// This property is only valid in real world.
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func (info TileTextureInfo) WallTextureIndex() AtlasIndex {
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return AtlasIndex(info & 0x003F)
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}
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// WithWallTextureIndex returns an info with given index set.
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// Values outside valid range are ignored.
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func (info TileTextureInfo) WithWallTextureIndex(value AtlasIndex) TileTextureInfo {
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if value >= 64 {
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return info
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}
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return TileTextureInfo(uint16(info&^0x003F) | uint16(value&0x003F))
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}
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// CeilingTextureIndex returns the texture index into the texture atlas for the ceiling.
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// Valid range [0..31].
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// This property is only valid in real world.
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func (info TileTextureInfo) CeilingTextureIndex() AtlasIndex {
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return AtlasIndex((info & 0x07C0) >> 6)
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}
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// WithCeilingTextureIndex returns an info with given index set.
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// Values outside valid range are ignored.
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func (info TileTextureInfo) WithCeilingTextureIndex(value AtlasIndex) TileTextureInfo {
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if value >= FloorCeilingTextureLimit {
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return info
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}
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return TileTextureInfo(uint16(info&^0x07C0) | (uint16(value&0x001F) << 6))
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}
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// FloorTextureIndex returns the texture index into the texture atlas for the floor.
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// Valid range [0..31].
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// This property is only valid in real world.
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func (info TileTextureInfo) FloorTextureIndex() AtlasIndex {
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return AtlasIndex((info & 0xF800) >> 11)
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}
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// WithFloorTextureIndex returns an info with given index set.
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// Values outside valid range are ignored.
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func (info TileTextureInfo) WithFloorTextureIndex(value AtlasIndex) TileTextureInfo {
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if value >= FloorCeilingTextureLimit {
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return info
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}
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return TileTextureInfo(uint16(info&^0xF800) | (uint16(value&0x001F) << 11))
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}
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// FloorPaletteIndex returns the palette index for the floor in cyberspace.
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func (info TileTextureInfo) FloorPaletteIndex() byte {
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return byte(info)
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}
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// WithFloorPaletteIndex returns an info with given index set.
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func (info TileTextureInfo) WithFloorPaletteIndex(value byte) TileTextureInfo {
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return TileTextureInfo(uint16(info&0xFF00) | uint16(value))
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}
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// CeilingPaletteIndex returns the palette index for the ceiling in cyberspace.
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func (info TileTextureInfo) CeilingPaletteIndex() byte {
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return byte(info >> 8)
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}
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// WithCeilingPaletteIndex returns an info with given index set.
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func (info TileTextureInfo) WithCeilingPaletteIndex(value byte) TileTextureInfo {
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return TileTextureInfo(uint16(info&0x00FF) | (uint16(value) << 8))
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}
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