///
/// Read entity data from all layers in a .lvl file.
/// Callbacks are used so that the caller can handle the creation
/// of new layers and instantiate new game objects using the entity
/// data from the file.
///
public bool ReadAll(
Action <LvlLayer> create_layer_callback,
Action <LvlEntity, Vector2Int> create_entity_callback,
out LvlHeader header)
{
if (!TryReadHeader(out header))
{
return(false);
}
for (int layer = 0; layer < header.layers; layer++)
{
create_layer_callback(ReadLayer());
for (int i = 0; i < header.width; i++)
{
for (int j = 0; j < header.height; j++)
{
var pos = new Vector2Int(i, j);
var entity = ReadEntity();
if (entity.empty)
{
// Don't invoke callback unless there is data
continue;
}
create_entity_callback(entity, pos);
}
}
}
return(true);
}
public bool WriteHeader(LvlHeader header)
{
if (!ValidState(State.Header))
{
return(false);
}
writer.Write(LvlHeader.SIGNATURE_VERSION);
writer.Write(header.layers);
writer.Write(header.palette);
writer.Write(header.width);
writer.Write(header.height);
writer.Write(header.camera.x);
writer.Write(header.camera.y);
writer.Write(header.camera.z);
writer.Write(header.camera.ortho_size);
writer.Write(header.camera.set_color);
writer.Write(header.camera.r);
writer.Write(header.camera.g);
writer.Write(header.camera.b);
writer.Write(header.name);
writer.Write(header.author);
state = State.Layer;
return(true);
}
public bool TryReadHeader(out LvlHeader header)
{
header = new LvlHeader();
int sign = reader.ReadInt32();
if (sign != (LvlHeader.SIGNATURE_VERSION))
{
Debug.LogErrorFormat("[lvl2d] Incompatible version {0:X8}", sign);
return(false);
}
header.layers = reader.ReadUInt16();
header.palette = reader.ReadUInt16();
header.width = reader.ReadUInt16();
header.height = reader.ReadUInt16();
header.camera = new LvlHeader.Camera()
{
x = reader.ReadSingle(),
y = reader.ReadSingle(),
z = reader.ReadSingle(),
ortho_size = reader.ReadSingle(),
set_color = reader.ReadBoolean(),
r = reader.ReadByte(),
g = reader.ReadByte(),
b = reader.ReadByte()
};
header.name = reader.ReadString();
header.author = reader.ReadString();
return(true);
}
public bool WriteAll(
LvlHeader header,
Func <int, LvlLayer> layer_callback,
Func <int, Vector2Int, GameObject> entity_callback,
Func <GameObject, int> find_palette_index_callback)
{
if (!WriteHeader(header))
{
return(false);
}
int map_size = header.width * header.height;
for (int layer = 0; layer < header.layers; layer++)
{
if (!WriteLayer(layer_callback(layer)))
{
return(false);
}
for (int i = 0; i < header.width; i++)
{
for (int j = 0; j < header.height; j++)
{
var entity = entity_callback(layer, new Vector2Int(i, j));
int palette_index;
if (entity)
{
palette_index = find_palette_index_callback(entity);
}
else
{
palette_index = -1;
}
if (!WriteEntity(entity, palette_index, map_size))
{
return(false);
}
}
}
}
return(true);
}
