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class_name GATFormat
## Byte Length: 4 [br]
## GRAT
var signature: String = "GRAT"
## Byte Type: u8 [br]
## Byte Length: 2
var version: Version
## Byte Type: i32 [br]
## Byte Length: 4
var map_width: int
## Byte Type: i32 [br]
## Byte Length: 4
var map_height: int
## Byte Length: [member map_width] * [member map_height]
var tiles: Array[Tile]
static func from_bytes(bytes: ByteStream) -> GATFormat:
var gat_format = GATFormat.new()
bytes.advance(gat_format.signature.length())
@warning_ignore("shadowed_variable")
var version = Version.new()
version.major = bytes.decode_u8()
version.minor = bytes.decode_u8()
gat_format.version = version
gat_format.map_width = bytes.decode_s32()
gat_format.map_height = bytes.decode_s32()
gat_format.tiles = [] as Array[Tile]
for _n in gat_format.map_width * gat_format.map_height:
gat_format.tiles.append(Tile.from_bytes(bytes))
return gat_format
class Tile:
## Byte Type: f32 [br]
## Byte Length: 4 [br]
## Orignal Coordinates: (0, 0)
var bottom_left_altitude: int
## Byte Type: f32 [br]
## Byte Length: 4 [br]
## Orignal Coordinates: (1, 0)
var bottom_right_altitude: int
## Byte Type: f32 [br]
## Byte Length: 4 [br]
## Orignal Coordinates: (0, 1)
var top_left_altitude: int
## Byte Type: f32 [br]
## Byte Length: 4 [br]
## Orignal Coordinates: (1, 1)
var top_right_altitude: int
## Byte Type: u32 ?[br]
## Byte Length: 4 ?
var terrain_type: int
func get_height_map() -> Dictionary: # Dictionary[Vector2, int]
return {
Vector2(0, 0): top_left_altitude,
Vector2(1, 0): top_right_altitude,
Vector2(0, 1): bottom_left_altitude,
Vector2(1, 1): bottom_right_altitude,
}
static func from_bytes(bytes: ByteStream) -> Tile:
var tile = Tile.new()
tile.bottom_left_altitude = bytes.decode_float()
tile.bottom_right_altitude = bytes.decode_float()
tile.top_left_altitude = bytes.decode_float()
tile.top_right_altitude = bytes.decode_float()
tile.terrain_type = bytes.decode_u32()
return tile
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