/
LuaPathFinder.cpp
374 lines (289 loc) · 8.68 KB
/
LuaPathFinder.cpp
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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "System/mmgr.h"
#include "LuaPathFinder.h"
#include "LuaInclude.h"
#include "LuaHandle.h"
#include "LuaUtils.h"
#include "Sim/Path/IPathManager.h"
#include "Sim/MoveTypes/MoveDefHandler.h"
#include <stdlib.h>
#include <algorithm>
#include <vector>
struct NodeCostOverlay {
NodeCostOverlay(): sizex(0), sizez(0) {}
void Init(unsigned int sx, unsigned int sz) {
costs.resize(sx * sz, 0.0f);
sizex = sx;
sizez = sz;
}
void Clear() { costs.clear(); }
bool Empty() const { return costs.empty(); }
unsigned int Size() const { return costs.size(); }
std::vector<float> costs;
unsigned int sizex;
unsigned int sizez;
};
static std::map<unsigned int, NodeCostOverlay> costArrayMapSynced;
static std::map<unsigned int, NodeCostOverlay> costArrayMapUnsynced;
static void CreatePathMetatable(lua_State* L);
/******************************************************************************/
/******************************************************************************/
bool LuaPathFinder::PushEntries(lua_State* L)
{
CreatePathMetatable(L);
#define REGISTER_LUA_CFUNC(x) \
lua_pushstring(L, #x); \
lua_pushcfunction(L, x); \
lua_rawset(L, -3)
REGISTER_LUA_CFUNC(RequestPath);
REGISTER_LUA_CFUNC(InitPathNodeCostsArray);
REGISTER_LUA_CFUNC(FreePathNodeCostsArray);
REGISTER_LUA_CFUNC(SetPathNodeCosts);
REGISTER_LUA_CFUNC(GetPathNodeCosts);
REGISTER_LUA_CFUNC(SetPathNodeCost);
REGISTER_LUA_CFUNC(GetPathNodeCost);
return true;
}
int LuaPathFinder::PushPathNodes(lua_State* L, const int pathID)
{
if (pathID == 0) {
return 0;
}
vector<float3> points;
vector<int> starts;
pathManager->GetPathWayPoints(pathID, points, starts);
const int pointCount = points.size();
const int startCount = starts.size();
{
lua_newtable(L);
for (int i = 0; i < pointCount; i++) {
lua_pushnumber(L, i + 1);
lua_newtable(L); {
const float3& p = points[i];
lua_pushnumber(L, 1); lua_pushnumber(L, p.x); lua_rawset(L, -3);
lua_pushnumber(L, 2); lua_pushnumber(L, p.y); lua_rawset(L, -3);
lua_pushnumber(L, 3); lua_pushnumber(L, p.z); lua_rawset(L, -3);
}
lua_rawset(L, -3);
}
}
{
lua_newtable(L);
for (int i = 0; i < startCount; i++) {
lua_pushnumber(L, i + 1);
lua_pushnumber(L, starts[i] + 1);
lua_rawset(L, -3);
}
}
return 2;
}
/******************************************************************************/
static int path_next(lua_State* L)
{
const int* idPtr = (int*)luaL_checkudata(L, 1, "Path");
const int pathID = *idPtr;
if (pathID == 0) {
return 0;
}
const int args = lua_gettop(L);
float3 callerPos = ZeroVector;
if (args >= 4) {
callerPos.x = luaL_checkfloat(L, 2);
callerPos.y = luaL_checkfloat(L, 3);
callerPos.z = luaL_checkfloat(L, 4);
}
const float minDist = luaL_optfloat(L, 5, 0.0f);
const bool synced = CLuaHandle::GetHandleSynced(L);
const float3 point = pathManager->NextWayPoint(pathID, callerPos, minDist, 0, 0, synced);
if ((point.x == -1.0f) &&
(point.y == -1.0f) &&
(point.z == -1.0f)) {
return 0;
}
lua_pushnumber(L, point.x);
lua_pushnumber(L, point.y);
lua_pushnumber(L, point.z);
return 3;
}
static int path_nodes(lua_State* L)
{
const int* idPtr = (int*)luaL_checkudata(L, 1, "Path");
const int pathID = *idPtr;
return (LuaPathFinder::PushPathNodes(L, pathID));
}
static int path_index(lua_State* L)
{
const int* idPtr = (int*)luaL_checkudata(L, 1, "Path");
const int pathID = *idPtr;
if (pathID == 0) {
return 0;
}
const string key = luaL_checkstring(L, 2);
if (key == "Next") {
lua_pushcfunction(L, path_next);
return 1;
}
else if (key == "GetPathWayPoints") {
lua_pushcfunction(L, path_nodes);
return 1;
}
return 0;
}
static int path_newindex(lua_State* L)
{
return 0;
}
static int path_gc(lua_State* L)
{
int* idPtr = (int*)luaL_checkudata(L, 1, "Path");
const int pathID = *idPtr;
if (pathID == 0) {
return 0;
}
pathManager->DeletePath(*idPtr);
*idPtr = 0;
return 0;
}
static void CreatePathMetatable(lua_State* L)
{
luaL_newmetatable(L, "Path");
HSTR_PUSH_CFUNC(L, "__gc", path_gc);
HSTR_PUSH_CFUNC(L, "__index", path_index);
HSTR_PUSH_CFUNC(L, "__newindex", path_newindex);
lua_pop(L, 1);
}
/******************************************************************************/
/******************************************************************************/
int LuaPathFinder::RequestPath(lua_State* L)
{
const MoveDef* moveDef = NULL;
if (lua_israwstring(L, 1)) {
moveDef = moveDefHandler->GetMoveDefFromName(lua_tostring(L, 1));
} else {
const int moveID = luaL_checkint(L, 1);
if ((moveID < 0) || ((size_t)moveID >= moveDefHandler->moveDefs.size())) {
luaL_error(L, "Invalid moveID passed to RequestPath");
}
moveDef = moveDefHandler->moveDefs[moveID];
}
if (moveDef == NULL) {
return 0;
}
const float3 start(luaL_checkfloat(L, 2),
luaL_checkfloat(L, 3),
luaL_checkfloat(L, 4));
const float3 end(luaL_checkfloat(L, 5),
luaL_checkfloat(L, 6),
luaL_checkfloat(L, 7));
const float radius = luaL_optfloat(L, 8, 8.0f);
const bool synced = CLuaHandle::GetHandleSynced(L);
const int pathID = pathManager->RequestPath(moveDef, start, end, radius, NULL, synced);
if (pathID == 0) {
return 0;
}
int* idPtr = (int*)lua_newuserdata(L, sizeof(int));
luaL_getmetatable(L, "Path");
lua_setmetatable(L, -2);
*idPtr = pathID;
return 1;
}
int LuaPathFinder::InitPathNodeCostsArray(lua_State* L)
{
const unsigned int array = luaL_checkint(L, 1);
const unsigned int sizex = luaL_checkint(L, 2);
const unsigned int sizez = luaL_checkint(L, 3);
const bool synced = CLuaHandle::GetHandleSynced(L);
std::map<unsigned int, NodeCostOverlay>& map = synced?
costArrayMapSynced:
costArrayMapUnsynced;
NodeCostOverlay& overlay = map[array];
if (sizex == 0 || sizez == 0) {
lua_pushboolean(L, false);
return 1;
}
if (!overlay.Empty()) {
// no resizing of existing overlays
lua_pushboolean(L, false);
return 1;
}
overlay.Init(sizex, sizez);
lua_pushboolean(L, true);
return 1;
}
int LuaPathFinder::FreePathNodeCostsArray(lua_State* L)
{
const unsigned int array = luaL_checkint(L, 1);
const bool synced = CLuaHandle::GetHandleSynced(L);
std::map<unsigned int, NodeCostOverlay>& map = synced?
costArrayMapSynced:
costArrayMapUnsynced;
NodeCostOverlay& overlay = map[array];
if (overlay.Empty()) {
// not an existing overlay
lua_pushboolean(L, false);
return 1;
}
// nullify the active cost-overlay if we are freeing it
if (pathManager->GetNodeExtraCosts(synced) == &overlay.costs[0]) {
pathManager->SetNodeExtraCosts(NULL, 1, 1, synced);
}
overlay.Clear();
map.erase(array);
lua_pushboolean(L, true);
return 1;
}
int LuaPathFinder::SetPathNodeCosts(lua_State* L)
{
const unsigned int array = luaL_checkint(L, 1);
const bool synced = CLuaHandle::GetHandleSynced(L);
std::map<unsigned int, NodeCostOverlay>& map = synced?
costArrayMapSynced:
costArrayMapUnsynced;
NodeCostOverlay& overlay = map[array];
if (overlay.Empty()) {
lua_pushboolean(L, false);
return 1;
}
// set the active cost-overlay to <overlay>
lua_pushboolean(L, pathManager->SetNodeExtraCosts(&overlay.costs[0], overlay.sizex, overlay.sizez, synced));
return 1;
}
int LuaPathFinder::GetPathNodeCosts(lua_State* L)
{
// not implemented
return 0;
}
int LuaPathFinder::SetPathNodeCost(lua_State* L)
{
const unsigned int array = luaL_checkint(L, 1);
const unsigned int index = luaL_checkint(L, 2);
const float cost = luaL_checkfloat(L, 3);
const bool synced = CLuaHandle::GetHandleSynced(L);
std::map<unsigned int, NodeCostOverlay>& map = synced?
costArrayMapSynced:
costArrayMapUnsynced;
NodeCostOverlay& overlay = map[array];
if (overlay.Empty()) {
// invalid array ID (possibly created through map::operator[]), fallback
// lua_pushboolean(L, pathManager->SetNodeExtraCost(hmx, hmz, cost, synced));
lua_pushboolean(L, false);
} else {
// modify only the cost-overlay (whether it is active or not)
if (index < overlay.Size())
overlay.costs[index] = cost;
lua_pushboolean(L, (index < overlay.Size()));
}
return 1;
}
int LuaPathFinder::GetPathNodeCost(lua_State* L)
{
const unsigned int hmx = luaL_checkint(L, 1);
const unsigned int hmz = luaL_checkint(L, 2);
const bool synced = CLuaHandle::GetHandleSynced(L);
// reads from overlay if PathNodeStateBuffer::extraCosts != NULL
const float cost = pathManager->GetNodeExtraCost(hmx, hmz, synced);
lua_pushnumber(L, cost);
return 1;
}
/******************************************************************************/
/******************************************************************************/