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448 lines (386 loc) · 16 KB
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#include <stack>
#include "Debug.h"
#include "Error.h"
#include "PluginManager.h"
#include "PluginLua.h"
#include "TileTypes.h"
#include "df/building_type.h"
#include "df/building_hatchst.h"
#include "df/building_bars_floorst.h"
#include "df/building_grate_floorst.h"
#include "df/tile_building_occ.h"
#include "modules/Buildings.h"
#include "modules/Gui.h"
#include "modules/Maps.h"
#include "modules/Screen.h"
#include "modules/Textures.h"
#include "df/building_tradedepotst.h"
#include "df/init.h"
#include "df/plotinfost.h"
#include "df/world.h"
using namespace DFHack;
using std::stack;
using std::unordered_set;
DFHACK_PLUGIN("pathable");
REQUIRE_GLOBAL(init);
REQUIRE_GLOBAL(plotinfo);
REQUIRE_GLOBAL(window_x);
REQUIRE_GLOBAL(window_y);
REQUIRE_GLOBAL(window_z);
REQUIRE_GLOBAL(world);
namespace DFHack {
DBG_DECLARE(pathable, log, DebugCategory::LINFO);
}
static std::vector<TexposHandle> textures;
DFhackCExport command_result plugin_init(color_ostream &out, std::vector<PluginCommand> &commands) {
textures = Textures::loadTileset(Core::getInstance().getHackPath() / "data" / "art" / "pathable.png", 32, 32, true);
return CR_OK;
}
DFhackCExport command_result plugin_shutdown(color_ostream &out) {
return CR_OK;
}
struct PaintCtx {
bool use_graphics;
int selected_tile_texpos;
long pathable_tile_texpos;
long unpathable_tile_texpos;
PaintCtx() {
use_graphics = Screen::inGraphicsMode();
selected_tile_texpos = 0;
Screen::findGraphicsTile("CURSORS", 4, 3, &selected_tile_texpos);
pathable_tile_texpos = init->load_bar_texpos[1];
unpathable_tile_texpos = init->load_bar_texpos[4];
long on_off_texpos = Textures::getTexposByHandle(textures[0]);
if (on_off_texpos > 0) {
pathable_tile_texpos = on_off_texpos;
unpathable_tile_texpos = Textures::getTexposByHandle(textures[1]);
}
}
};
static void paint_screen(const PaintCtx & ctx, const unordered_set<df::coord> & targets,
bool show_hidden, std::function<bool(const df::coord & pos)> get_can_walk)
{
auto dims = Gui::getDwarfmodeViewDims().map();
for (int y = dims.first.y; y <= dims.second.y; ++y) {
for (int x = dims.first.x; x <= dims.second.x; ++x) {
df::coord map_pos(*window_x + x, *window_y + y, *window_z);
if (!Maps::isValidTilePos(map_pos))
continue;
if (!show_hidden && !Maps::isTileVisible(map_pos)) {
TRACE(log).print("skipping hidden tile\n");
continue;
}
DEBUG(log).print("scanning map tile at offset {}, {}\n", x, y);
Screen::Pen cur_tile = Screen::readTile(x, y, true);
DEBUG(log).print("tile data: ch={}, fg={}, bg={}, bold={}\n",
cur_tile.ch, cur_tile.fg, cur_tile.bg, cur_tile.bold ? "true" : "false");
DEBUG(log).print("tile data: tile={}, tile_mode={}, tile_fg={}, tile_bg={}\n",
cur_tile.tile, static_cast<int>(cur_tile.tile_mode), cur_tile.tile_fg, cur_tile.tile_bg);
if (!cur_tile.valid()) {
DEBUG(log).print("cannot read tile at offset {}, {}\n", x, y);
continue;
}
bool can_walk = get_can_walk(map_pos);
DEBUG(log).print("tile is {}walkable at offset {}, {}\n",
can_walk ? "" : "not ", x, y);
if (ctx.use_graphics) {
if (targets.contains(map_pos)) {
cur_tile.tile = ctx.selected_tile_texpos;
} else{
cur_tile.tile = can_walk ?
ctx.pathable_tile_texpos : ctx.unpathable_tile_texpos;
}
} else {
int color = can_walk ? COLOR_GREEN : COLOR_RED;
if (targets.contains(map_pos))
color = COLOR_CYAN;
if (cur_tile.fg && cur_tile.ch != ' ') {
cur_tile.fg = color;
cur_tile.bg = 0;
} else {
cur_tile.fg = 0;
cur_tile.bg = color;
}
cur_tile.bold = false;
if (cur_tile.tile)
cur_tile.tile_mode = Screen::Pen::CharColor;
}
Screen::paintTile(cur_tile, x, y, true);
}
}
}
static void paintScreenPathable(df::coord target, bool show_hidden = false) {
DEBUG(log).print("entering paintScreen\n");
PaintCtx ctx;
unordered_set<df::coord> targets;
targets.emplace(target);
paint_screen(ctx, targets, show_hidden, [&](const df::coord & pos){
return Maps::canWalkBetween(target, pos);
});
}
static bool get_depot_coords(color_ostream &out, unordered_set<df::coord> * depot_coords) {
CHECK_NULL_POINTER(depot_coords);
depot_coords->clear();
for (auto bld : world->buildings.other.TRADE_DEPOT){
DEBUG(log,out).print("found depot at ({}, {}, {})\n", bld->centerx, bld->centery, bld->z);
depot_coords->emplace(bld->centerx, bld->centery, bld->z);
}
return !depot_coords->empty();
}
static bool get_pathability_groups(color_ostream &out, unordered_set<uint16_t> * depot_pathability_groups,
const unordered_set<df::coord> & depot_coords)
{
CHECK_NULL_POINTER(depot_pathability_groups);
for (auto pos : depot_coords) {
auto wgroup = Maps::getWalkableGroup(pos);
if (wgroup) {
DEBUG(log,out).print("walkability group at ({}, {}, {}) is {}\n", pos.x, pos.y, pos.z, wgroup);
depot_pathability_groups->emplace(wgroup);
}
}
return !depot_pathability_groups->empty();
}
// if entry_tiles is given, it is filled with the surface edge tiles that match one of the given
// depot pathability groups. If entry_tiles is NULL, just returns true if such a tile is found.
// returns false if no tiles are found
static bool get_entry_tiles(unordered_set<df::coord> * entry_tiles, const unordered_set<uint16_t> & depot_pathability_groups) {
auto & edge = plotinfo->map_edge;
size_t num_edge_tiles = edge.surface_x.size();
uint32_t count_x, count_y, count_z;
Maps::getTileSize(count_x, count_y, count_z);
if (!count_x || !count_y)
return false;
uint16_t max_x = count_x - 1;
uint16_t max_y = count_y - 1;
bool found = false;
for (size_t idx = 0; idx < num_edge_tiles; ++idx) {
df::coord pos(edge.surface_x[idx], edge.surface_y[idx], edge.surface_z[idx]);
auto wgroup = Maps::getWalkableGroup(pos);
if (depot_pathability_groups.contains(wgroup) &&
(pos.x == 0 || pos.y == 0 || pos.x == max_x || pos.y == max_y)) {
found = true;
if (!entry_tiles)
break;
entry_tiles->emplace(pos);
}
}
return found;
}
static bool getDepotAccessibleByAnimals(color_ostream &out) {
unordered_set<df::coord> depot_coords;
if (!get_depot_coords(out, &depot_coords))
return false;
unordered_set<uint16_t> depot_pathability_groups;
if (!get_pathability_groups(out, &depot_pathability_groups, depot_coords))
return false;
return get_entry_tiles(NULL, depot_pathability_groups);
}
struct FloodCtx {
uint16_t wgroup;
unordered_set<df::coord> & wagon_path;
unordered_set<df::coord> seen; // contains tiles that should not be added to search_edge
stack<df::coord> search_edge; // contains tiles that can be successfully moved into
const unordered_set<df::coord> & entry_tiles;
FloodCtx(uint16_t wgroup, unordered_set<df::coord> & wagon_path, const unordered_set<df::coord> & entry_tiles)
: wgroup(wgroup), wagon_path(wagon_path), entry_tiles(entry_tiles) {}
};
static bool is_wagon_dynamic_traversible(df::tiletype_shape shape, const df::coord & pos) {
auto bld = Buildings::findAtTile(pos);
if (!bld) return false;
auto btype = bld->getType();
// open hatch should be inaccessible regardless of the tile it sits on
if (btype == df::building_type::Hatch) {
if (shape == df::tiletype_shape::RAMP_TOP)
return false;
auto& hatch = *static_cast<df::building_hatchst*>(bld);
if (hatch.door_flags.bits.closed)
return true;
// open floor grate/bar should be inaccessible regardless of the tile it sits on
} else if (btype == df::building_type::GrateFloor) {
auto& b = *static_cast<df::building_grate_floorst*>(bld);
if (b.gate_flags.bits.closed)
return true;
} else if (btype == df::building_type::BarsFloor) {
auto& b = *static_cast<df::building_bars_floorst*>(bld);
if (b.gate_flags.bits.closed)
return true;
}
// Doors, traps..etc
return false;
}
// NOTE: When i.e. tracks, stairs have a bridge over them, the tile will have
// an occupancy of floored.
static bool is_wagon_tile_traversible(df::tiletype tt) {
auto shape = tileShape(tt);
auto special = tileSpecial(tt);
auto material = tileMaterial(tt);
// Allow ramps (murky pool and river tiles are blocked except for ramps)
if (shape == df::tiletype_shape::RAMP_TOP)
return true;
// NOTE: smoothing a boulder turns it into a smoothed floor
else if (shape == df::tiletype_shape::STAIR_UP || shape == df::tiletype_shape::STAIR_DOWN ||
shape == df::tiletype_shape::STAIR_UPDOWN || shape == df::tiletype_shape::BOULDER ||
shape == df::tiletype_shape::EMPTY || shape == df::tiletype_shape::NONE)
return false;
else if (special == df::tiletype_special::TRACK)
return false;
// Fires seem to have their own path group, and group for lava is 0
// According to wiki, the wagon won't path thru pool and river tiles, but ramps are ok
else if (material == df::tiletype_material::POOL || material == df::tiletype_material::RIVER)
return false;
return true;
}
static bool is_wagon_traversible(FloodCtx & ctx, const df::coord & pos, const df::coord & prev_pos) {
auto tt = Maps::getTileType(pos);
if (!tt)
return false;
auto shape = tileShape(*tt);
auto occp = Maps::getTileOccupancy(pos);
if (!occp)
return false;
auto & occ = *occp;
switch (occ.bits.building) {
case tile_building_occ::Obstacle: // Statues, windmills (middle tile)
//FALLTHROUGH
case tile_building_occ::Well:
//FALLTHROUGH
case tile_building_occ::Impassable: // Raised bridges
return false;
case tile_building_occ::Dynamic:
// doors(block), levers (block), traps (block), hatches (OK, but block on down ramp)
// closed floor grates (OK), closed floor bars (OK)
if (is_wagon_dynamic_traversible(shape, pos) == false)
return false;
break;
case tile_building_occ::None: // Not occupied by a building
//FALLTHROUGH
case tile_building_occ::Planned:
//FALLTHROUGH
case tile_building_occ::Passable:
// Any tile with no building or a passable building including
// beds, supports, rollers, armor/weapon stands, cages (not traps),
// open wall grate/vertical bars, retracted bridges, open floodgates,
// workshops (tiles with open space are handled by the tile check)
if (is_wagon_tile_traversible(*tt) == false)
return false;
break;
case tile_building_occ::Floored:
// depot, lowered bridges or retractable bridges, forbidden hatches
break;
}
if (ctx.wgroup == Maps::getWalkableGroup(pos))
return true;
if (shape == df::tiletype_shape::RAMP_TOP ) {
df::coord pos_below = pos + df::coord(0, 0, -1);
if (Maps::getWalkableGroup(pos_below)) {
ctx.search_edge.emplace(pos_below);
return true;
}
} else if (shape == df::tiletype_shape::WALL) {
auto prev_tt = Maps::getTileType(prev_pos);
if (prev_tt && tileShape(*prev_tt) == df::tiletype_shape::RAMP) {
df::coord pos_above = pos + df::coord(0, 0, 1);
if (Maps::getWalkableGroup(pos_above)) {
ctx.search_edge.emplace(pos_above);
return true;
}
}
}
return false;
}
static void check_wagon_tile(FloodCtx & ctx, const df::coord & pos) {
if (ctx.seen.contains(pos))
return;
ctx.seen.emplace(pos);
if (ctx.entry_tiles.contains(pos)) {
ctx.wagon_path.emplace(pos); // Is this needed?
ctx.search_edge.emplace(pos);
return;
}
if (is_wagon_traversible(ctx, pos, pos) &&
is_wagon_traversible(ctx, pos+df::coord(-1, -1, 0), pos) &&
is_wagon_traversible(ctx, pos+df::coord( 0, -1, 0), pos) &&
is_wagon_traversible(ctx, pos+df::coord( 1, -1, 0), pos) &&
is_wagon_traversible(ctx, pos+df::coord(-1, 0, 0), pos) &&
is_wagon_traversible(ctx, pos+df::coord( 1, 0, 0), pos) &&
is_wagon_traversible(ctx, pos+df::coord(-1, 1, 0), pos) &&
is_wagon_traversible(ctx, pos+df::coord( 0, 1, 0), pos) &&
is_wagon_traversible(ctx, pos+df::coord( 1, 1, 0), pos))
{
ctx.wagon_path.emplace(pos);
ctx.search_edge.emplace(pos);
}
}
// returns true if a continuous 3-wide path can be found to an entry tile
// assumes:
// - wagons can only move in orthogonal directions
// - if three adjacent tiles are in the same pathability group, then they are traversible by a wagon
// - a wagon needs a single ramp to move elevations as long as the adjacent tiles are walkable
// TODO: cannot traverse doors, up stairs, or up/down stairs
static bool wagon_flood(color_ostream &out, unordered_set<df::coord> * wagon_path, const df::coord & depot_pos,
const unordered_set<df::coord> & entry_tiles)
{
unordered_set<df::coord> temp_wagon_path;
FloodCtx ctx(Maps::getWalkableGroup(depot_pos), wagon_path ? *wagon_path : temp_wagon_path, entry_tiles);
if (!ctx.wgroup)
return false;
bool found = false;
ctx.wagon_path.emplace(depot_pos);
ctx.seen.emplace(depot_pos);
ctx.search_edge.emplace(depot_pos);
while (!ctx.search_edge.empty()) {
df::coord pos = ctx.search_edge.top();
ctx.search_edge.pop();
TRACE(log,out).print("checking tile: ({}, {}, {}); pathability group: {}\n", pos.x, pos.y, pos.z,
Maps::getWalkableGroup(pos));
if (entry_tiles.contains(pos)) {
found = true;
if (!wagon_path)
break;
continue;
}
check_wagon_tile(ctx, pos+df::coord( 0, -1, 0));
check_wagon_tile(ctx, pos+df::coord( 0, 1, 0));
check_wagon_tile(ctx, pos+df::coord(-1, 0, 0));
check_wagon_tile(ctx, pos+df::coord( 1, 0, 0));
}
return found;
}
static unordered_set<df::coord> wagon_path;
static unordered_set<df::coord> entry_tiles;
static bool getDepotAccessibleByWagons(color_ostream &out, bool cache_scan_for_painting) {
if (cache_scan_for_painting) {
entry_tiles.clear();
wagon_path.clear();
}
unordered_set<df::coord> depot_coords;
if (!get_depot_coords(out, &depot_coords))
return false;
unordered_set<uint16_t> depot_pathability_groups;
if (!get_pathability_groups(out, &depot_pathability_groups, depot_coords))
return false;
if (!get_entry_tiles(&entry_tiles, depot_pathability_groups))
return false;
bool found_edge = false;
for (auto depot_pos : depot_coords) {
if (wagon_flood(out, cache_scan_for_painting ? &wagon_path : NULL, depot_pos, entry_tiles)) {
found_edge = true;
if (!cache_scan_for_painting)
break;
}
}
return found_edge;
}
static void paintScreenDepotAccess() {
PaintCtx ctx;
paint_screen(ctx, entry_tiles, false, [&](const df::coord & pos){
return wagon_path.contains(pos);
});
}
DFHACK_PLUGIN_LUA_FUNCTIONS {
DFHACK_LUA_FUNCTION(paintScreenPathable),
DFHACK_LUA_FUNCTION(getDepotAccessibleByAnimals),
DFHACK_LUA_FUNCTION(getDepotAccessibleByWagons),
DFHACK_LUA_FUNCTION(paintScreenDepotAccess),
DFHACK_LUA_END
};
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