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///////////////////////////////////////////////////////////////
//SS13 Optimized Map loader
//////////////////////////////////////////////////////////////
#define SPACE_KEY "space"
/datum/grid_set
var/xcrd
var/ycrd
var/zcrd
var/gridLines
/datum/parsed_map
var/original_path
var/key_len = 0
var/list/grid_models = list()
var/list/gridSets = list()
var/list/modelCache
/// Unoffset bounds. Null on parse failure.
var/list/parsed_bounds
/// Offset bounds. Same as parsed_bounds until load().
var/list/bounds
// raw strings used to represent regexes more accurately
// '' used to avoid confusing syntax highlighting
var/static/regex/dmmRegex = new(@'"([a-zA-Z]+)" = \(((?:.|\n)*?)\)\n(?!\t)|\((\d+),(\d+),(\d+)\) = \{"([a-zA-Z\n]*)"\}', "g")
var/static/regex/trimQuotesRegex = new(@'^[\s\n]+"?|"?[\s\n]+$|^"|"$', "g")
var/static/regex/trimRegex = new(@'^[\s\n]+|[\s\n]+$', "g")
#ifdef TESTING
var/turfsSkipped = 0
#endif
/// Shortcut function to parse a map and apply it to the world.
///
/// - `dmm_file`: A .dmm file to load (Required).
/// - `x_offset`, `y_offset`, `z_offset`: Positions representign where to load the map (Optional).
/// - `cropMap`: When true, the map will be cropped to fit the existing world dimensions (Optional).
/// - `measureOnly`: When true, no changes will be made to the world (Optional).
/// - `no_changeturf`: When true, [turf/AfterChange] won't be called on loaded turfs
/// - `x_lower`, `x_upper`, `y_lower`, `y_upper`: Coordinates (relative to the map) to crop to (Optional).
/// - `placeOnTop`: Whether to use [turf/PlaceOnTop] rather than [turf/ChangeTurf] (Optional).
/proc/load_map(dmm_file as file, x_offset as num, y_offset as num, z_offset as num, cropMap as num, measureOnly as num, no_changeturf as num, x_lower = -INFINITY as num, x_upper = INFINITY as num, y_lower = -INFINITY as num, y_upper = INFINITY as num, placeOnTop = FALSE as num)
var/datum/parsed_map/parsed = new(dmm_file, x_lower, x_upper, y_lower, y_upper, measureOnly)
if(parsed.bounds && !measureOnly)
parsed.load(x_offset, y_offset, z_offset, cropMap, no_changeturf, x_lower, x_upper, y_lower, y_upper, placeOnTop)
return parsed
/// Parse a map, possibly cropping it.
/datum/parsed_map/New(tfile, x_lower = -INFINITY, x_upper = INFINITY, y_lower = -INFINITY, y_upper=INFINITY, measureOnly=FALSE)
if(isfile(tfile))
original_path = "[tfile]"
tfile = file2text(tfile)
else if(isnull(tfile))
// create a new datum without loading a map
return
bounds = parsed_bounds = list(1.#INF, 1.#INF, 1.#INF, -1.#INF, -1.#INF, -1.#INF)
var/stored_index = 1
//multiz lool
while(dmmRegex.Find(tfile, stored_index))
stored_index = dmmRegex.next
// "aa" = (/type{vars=blah})
if(dmmRegex.group[1]) // Model
var/key = dmmRegex.group[1]
if(grid_models[key]) // Duplicate model keys are ignored in DMMs
continue
if(key_len != length(key))
if(!key_len)
key_len = length(key)
else
CRASH("Inconsistent key length in DMM")
if(!measureOnly)
grid_models[key] = dmmRegex.group[2]
// (1,1,1) = {"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"}
else if(dmmRegex.group[3]) // Coords
if(!key_len)
CRASH("Coords before model definition in DMM")
var/curr_x = text2num(dmmRegex.group[3])
if(curr_x < x_lower || curr_x > x_upper)
continue
var/datum/grid_set/gridSet = new
gridSet.xcrd = curr_x
//position of the currently processed square
gridSet.ycrd = text2num(dmmRegex.group[4])
gridSet.zcrd = text2num(dmmRegex.group[5])
bounds[MAP_MINX] = min(bounds[MAP_MINX], clamp(gridSet.xcrd, x_lower, x_upper))
bounds[MAP_MINZ] = min(bounds[MAP_MINZ], gridSet.zcrd)
bounds[MAP_MAXZ] = max(bounds[MAP_MAXZ], gridSet.zcrd)
var/list/gridLines = splittext(dmmRegex.group[6], "\n")
gridSet.gridLines = gridLines
var/leadingBlanks = 0
while(leadingBlanks < gridLines.len && gridLines[++leadingBlanks] == "")
if(leadingBlanks > 1)
gridLines.Cut(1, leadingBlanks) // Remove all leading blank lines.
if(!gridLines.len) // Skip it if only blank lines exist.
continue
gridSets += gridSet
if(gridLines.len && gridLines[gridLines.len] == "")
gridLines.Cut(gridLines.len) // Remove only one blank line at the end.
bounds[MAP_MINY] = min(bounds[MAP_MINY], clamp(gridSet.ycrd, y_lower, y_upper))
gridSet.ycrd += gridLines.len - 1 // Start at the top and work down
bounds[MAP_MAXY] = max(bounds[MAP_MAXY], clamp(gridSet.ycrd, y_lower, y_upper))
var/maxx = gridSet.xcrd
if(gridLines.len) //Not an empty map
maxx = max(maxx, gridSet.xcrd + length(gridLines[1]) / key_len - 1)
bounds[MAP_MAXX] = clamp(max(bounds[MAP_MAXX], maxx), x_lower, x_upper)
CHECK_TICK
// Indicate failure to parse any coordinates by nulling bounds
if(bounds[1] == 1.#INF)
bounds = null
parsed_bounds = bounds
/// Load the parsed map into the world. See [/proc/load_map] for arguments.
/datum/parsed_map/proc/load(x_offset, y_offset, z_offset, cropMap, no_changeturf, x_lower, x_upper, y_lower, y_upper, placeOnTop)
//How I wish for RAII
Master.StartLoadingMap()
. = _load_impl(x_offset, y_offset, z_offset, cropMap, no_changeturf, x_lower, x_upper, y_lower, y_upper, placeOnTop)
Master.StopLoadingMap()
// Do not call except via load() above.
/datum/parsed_map/proc/_load_impl(x_offset = 1, y_offset = 1, z_offset = world.maxz + 1, cropMap = FALSE, no_changeturf = FALSE, x_lower = -INFINITY, x_upper = INFINITY, y_lower = -INFINITY, y_upper = INFINITY, placeOnTop = FALSE)
PRIVATE_PROC(TRUE)
var/list/areaCache = list()
var/list/modelCache = build_cache(no_changeturf)
var/space_key = modelCache[SPACE_KEY]
var/list/bounds
var/did_expand = FALSE
src.bounds = bounds = list(1.#INF, 1.#INF, 1.#INF, -1.#INF, -1.#INF, -1.#INF)
for(var/I in gridSets)
var/datum/grid_set/gset = I
var/ycrd = gset.ycrd + y_offset - 1
var/zcrd = gset.zcrd + z_offset - 1
if(!cropMap && ycrd > world.maxy)
world.maxy = ycrd // Expand Y here. X is expanded in the loop below
did_expand = TRUE
var/zexpansion = zcrd > world.maxz
if(zexpansion)
if(cropMap)
continue
else
while (zcrd > world.maxz) //create a new z_level if needed
world.incrementMaxZ()
did_expand = FALSE
if(!no_changeturf)
WARNING("Z-level expansion occurred without no_changeturf set, this may cause problems when /turf/AfterChange is called")
for(var/line in gset.gridLines)
if((ycrd - y_offset + 1) < y_lower || (ycrd - y_offset + 1) > y_upper) //Reverse operation and check if it is out of bounds of cropping.
--ycrd
continue
if(ycrd <= world.maxy && ycrd >= 1)
var/xcrd = gset.xcrd + x_offset - 1
for(var/tpos = 1 to length(line) - key_len + 1 step key_len)
if((xcrd - x_offset + 1) < x_lower || (xcrd - x_offset + 1) > x_upper) //Same as above.
++xcrd
continue //X cropping.
if(xcrd > world.maxx)
if(cropMap)
break
else
world.maxx = xcrd
did_expand = TRUE
if(xcrd >= 1)
var/model_key = copytext(line, tpos, tpos + key_len)
var/no_afterchange = no_changeturf || zexpansion
if(!no_afterchange || (model_key != space_key))
var/list/cache = modelCache[model_key]
if(!cache)
CRASH("Undefined model key in DMM: [model_key]")
build_coordinate(areaCache, cache, locate(xcrd, ycrd, zcrd), no_afterchange, placeOnTop)
// only bother with bounds that actually exist
bounds[MAP_MINX] = min(bounds[MAP_MINX], xcrd)
bounds[MAP_MINY] = min(bounds[MAP_MINY], ycrd)
bounds[MAP_MINZ] = min(bounds[MAP_MINZ], zcrd)
bounds[MAP_MAXX] = max(bounds[MAP_MAXX], xcrd)
bounds[MAP_MAXY] = max(bounds[MAP_MAXY], ycrd)
bounds[MAP_MAXZ] = max(bounds[MAP_MAXZ], zcrd)
#ifdef TESTING
else
++turfsSkipped
#endif
CHECK_TICK
++xcrd
--ycrd
CHECK_TICK
if(!no_changeturf)
for(var/t in block(locate(bounds[MAP_MINX], bounds[MAP_MINY], bounds[MAP_MINZ]), locate(bounds[MAP_MAXX], bounds[MAP_MAXY], bounds[MAP_MAXZ])))
var/turf/T = t
//we do this after we load everything in. if we don't; we'll have weird atmos bugs regarding atmos adjacent turfs
T.AfterChange(CHANGETURF_IGNORE_AIR)
#ifdef TESTING
if(turfsSkipped)
testing("Skipped loading [turfsSkipped] default turfs")
#endif
if(did_expand)
world.refresh_atmos_grid()
return TRUE
/datum/parsed_map/proc/build_cache(no_changeturf, bad_paths=null)
if(modelCache && !bad_paths)
return modelCache
. = modelCache = list()
var/list/grid_models = src.grid_models
for(var/model_key in grid_models)
var/model = grid_models[model_key]
var/list/members = list() //will contain all members (paths) in model (in our example : /turf/unsimulated/wall and /area/mine/explored)
var/list/members_attributes = list() //will contain lists filled with corresponding variables, if any (in our example : list(icon_state = "rock") and list())
/////////////////////////////////////////////////////////
//Constructing members and corresponding variables lists
////////////////////////////////////////////////////////
var/index = 1
var/old_position = 1
var/dpos
while(dpos != 0)
//finding next member (e.g /turf/unsimulated/wall{icon_state = "rock"} or /area/mine/explored)
dpos = find_next_delimiter_position(model, old_position, ",", "{", "}") //find next delimiter (comma here) that's not within {...}
var/full_def = trim_text(copytext(model, old_position, dpos)) //full definition, e.g : /obj/foo/bar{variables=derp}
var/variables_start = findtext(full_def, "{")
var/path_text = trim_text(copytext(full_def, 1, variables_start))
var/atom_def = text2path(path_text) //path definition, e.g /obj/foo/bar
if(dpos)
old_position = dpos + length(model[dpos])
if(!ispath(atom_def, /atom)) // Skip the item if the path does not exist. Fix your crap, mappers!
if(bad_paths)
LAZYOR(bad_paths[path_text], model_key)
continue
members.Add(atom_def)
//transform the variables in text format into a list (e.g {var1="derp"; var2; var3=7} => list(var1="derp", var2, var3=7))
var/list/fields = list()
if(variables_start)//if there's any variable
full_def = copytext(full_def, variables_start + length(full_def[variables_start]), -length(copytext_char(full_def, -1))) //removing the last '}'
fields = readlist(full_def, ";")
if(fields.len)
if(!trim(fields[fields.len]))
--fields.len
for(var/I in fields)
var/value = fields[I]
if(istext(value))
fields[I] = apply_text_macros(value)
//then fill the members_attributes list with the corresponding variables
members_attributes.len++
members_attributes[index++] = fields
CHECK_TICK
//check and see if we can just skip this turf
//So you don't have to understand this horrid statement, we can do this if
// 1. no_changeturf is set
// 2. the space_key isn't set yet
// 3. there are exactly 2 members
// 4. with no attributes
// 5. and the members are world.turf and world.area
// Basically, if we find an entry like this: "XXX" = (/turf/default, /area/default)
// We can skip calling this proc every time we see XXX
if(no_changeturf \
&& !(.[SPACE_KEY]) \
&& members.len == 2 \
&& members_attributes.len == 2 \
&& length(members_attributes[1]) == 0 \
&& length(members_attributes[2]) == 0 \
&& (world.area in members) \
&& (world.turf in members))
.[SPACE_KEY] = model_key
continue
.[model_key] = list(members, members_attributes)
/datum/parsed_map/proc/build_coordinate(list/areaCache, list/model, turf/crds, no_changeturf as num, placeOnTop as num)
var/index
var/list/members = model[1]
var/list/members_attributes = model[2]
////////////////
//Instanciation
////////////////
//The next part of the code assumes there's ALWAYS an /area AND a /turf on a given tile
//first instance the /area and remove it from the members list
index = members.len
if(members[index] != /area/template_noop)
var/atype = members[index]
world.preloader_setup(members_attributes[index], atype)//preloader for assigning set variables on atom creation
var/atom/instance = areaCache[atype]
if (!instance)
instance = GLOB.areas_by_type[atype]
if (!instance)
instance = new atype(null)
areaCache[atype] = instance
if(crds)
instance.contents.Add(crds)
if(GLOB.use_preloader && instance)
world.preloader_load(instance)
//then instance the /turf and, if multiple tiles are presents, simulates the DMM underlays piling effect
var/first_turf_index = 1
while(!ispath(members[first_turf_index], /turf)) //find first /turf object in members
first_turf_index++
//turn off base new Initialization until the whole thing is loaded
SSatoms.map_loader_begin()
//instanciate the first /turf
var/turf/T
if(members[first_turf_index] != /turf/template_noop)
T = instance_atom(members[first_turf_index],members_attributes[first_turf_index],crds,no_changeturf,placeOnTop)
if(T)
//if others /turf are presents, simulates the underlays piling effect
index = first_turf_index + 1
while(index <= members.len - 1) // Last item is an /area
var/underlay = T.appearance
T = instance_atom(members[index],members_attributes[index],crds,no_changeturf,placeOnTop)//instance new turf
T.underlays += underlay
index++
//finally instance all remainings objects/mobs
for(index in 1 to first_turf_index-1)
instance_atom(members[index],members_attributes[index],crds,no_changeturf,placeOnTop)
//Restore initialization to the previous value
SSatoms.map_loader_stop()
////////////////
//Helpers procs
////////////////
//Instance an atom at (x,y,z) and gives it the variables in attributes
/datum/parsed_map/proc/instance_atom(path,list/attributes, turf/crds, no_changeturf, placeOnTop)
world.preloader_setup(attributes, path)
if(crds)
if(ispath(path, /turf))
if(placeOnTop)
. = crds.PlaceOnTop(null, path, CHANGETURF_DEFER_CHANGE | (no_changeturf ? CHANGETURF_SKIP : NONE))
else if(!no_changeturf)
. = crds.ChangeTurf(path, null, CHANGETURF_DEFER_CHANGE)
else
. = create_atom(path, crds)//first preloader pass
else
. = create_atom(path, crds)//first preloader pass
if(GLOB.use_preloader && .)//second preloader pass, for those atoms that don't ..() in New()
world.preloader_load(.)
//custom CHECK_TICK here because we don't want things created while we're sleeping to not initialize
if(TICK_CHECK)
SSatoms.map_loader_stop()
stoplag()
SSatoms.map_loader_begin()
/datum/parsed_map/proc/create_atom(path, crds)
set waitfor = FALSE
. = new path (crds)
//text trimming (both directions) helper proc
//optionally removes quotes before and after the text (for variable name)
/datum/parsed_map/proc/trim_text(what as text,trim_quotes=0)
if(trim_quotes)
return trimQuotesRegex.Replace(what, "")
else
return trimRegex.Replace(what, "")
//find the position of the next delimiter,skipping whatever is comprised between opening_escape and closing_escape
//returns 0 if reached the last delimiter
/datum/parsed_map/proc/find_next_delimiter_position(text as text,initial_position as num, delimiter=",",opening_escape="\"",closing_escape="\"")
var/position = initial_position
var/next_delimiter = findtext(text,delimiter,position,0)
var/next_opening = findtext(text,opening_escape,position,0)
while((next_opening != 0) && (next_opening < next_delimiter))
position = findtext(text,closing_escape,next_opening + 1,0)+1
next_delimiter = findtext(text,delimiter,position,0)
next_opening = findtext(text,opening_escape,position,0)
return next_delimiter
//build a list from variables in text form (e.g {var1="derp"; var2; var3=7} => list(var1="derp", var2, var3=7))
//return the filled list
/datum/parsed_map/proc/readlist(text as text, delimiter=",")
. = list()
if (!text)
return
var/position
var/old_position = 1
while(position != 0)
// find next delimiter that is not within "..."
position = find_next_delimiter_position(text,old_position,delimiter)
// check if this is a simple variable (as in list(var1, var2)) or an associative one (as in list(var1="foo",var2=7))
var/equal_position = findtext(text,"=",old_position, position)
var/trim_left = trim_text(copytext(text,old_position,(equal_position ? equal_position : position)))
var/left_constant = delimiter == ";" ? trim_left : parse_constant(trim_left)
if(position)
old_position = position + length(text[position])
if(equal_position && !isnum(left_constant))
// Associative var, so do the association.
// Note that numbers cannot be keys - the RHS is dropped if so.
var/trim_right = trim_text(copytext(text, equal_position + length(text[equal_position]), position))
var/right_constant = parse_constant(trim_right)
.[left_constant] = right_constant
else // simple var
. += list(left_constant)
/datum/parsed_map/proc/parse_constant(text)
// number
var/num = text2num(text)
if(isnum(num))
return num
// string
if(text[1] == "\"")
return copytext(text, length(text[1]) + 1, findtext(text, "\"", length(text[1]) + 1))
// list
if(copytext(text, 1, 6) == "list(")//6 == length("list(") + 1
return readlist(copytext(text, 6, -1))
// typepath
var/path = text2path(text)
if(ispath(path))
return path
// file
if(text[1] == "'")
return file(copytext_char(text, 2, -1))
// null
if(text == "null")
return null
// not parsed:
// - pops: /obj{name="foo"}
// - new(), newlist(), icon(), matrix(), sound()
// fallback: string
return text
/datum/parsed_map/Destroy()
..()
return QDEL_HINT_HARDDEL_NOW
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