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#include "StdAfx.h"
// LuaPathFinder.cpp: implementation of the LuaPathFinder class.
//
//////////////////////////////////////////////////////////////////////
#include <stdlib.h>
#include <algorithm>
#include "mmgr.h"
using namespace std;
#include "LuaPathFinder.h"
#include "LuaInclude.h"
#include "LuaHandle.h"
#include "LuaUtils.h"
#include "Sim/MoveTypes/MoveInfo.h"
#include "Sim/Path/PathManager.h"
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);
return true;
}
/******************************************************************************/
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 float3 point = pathManager->NextWaypoint(pathID, callerPos, minDist);
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_estimates(lua_State* L)
{
const int* idPtr = (int*)luaL_checkudata(L, 1, "Path");
const int pathID = *idPtr;
if (pathID == 0) {
return 0;
}
vector<float3> points;
vector<int> starts;
pathManager->GetEstimatedPath(pathID, points, starts);
const int pointCount = (int)points.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);
}
const int startCount = (int)starts.size();
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_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 == "GetEstimatedPath") {
lua_pushcfunction(L, path_estimates);
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 MoveData* moveData = NULL;
if (lua_israwstring(L, 1)) {
const string moveName = lua_tostring(L, 1);
moveData = moveinfo->GetMoveDataFromName(moveName);
}
else {
const int moveID = luaL_checkint(L, 1);
if ((moveID < 0) || ((size_t)moveID >= moveinfo->moveData.size())) {
luaL_error(L, "Invalid moveID passed to RequestPath");
}
moveData = moveinfo->moveData[moveID];
}
if (moveData == 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 int pathID =
pathManager->RequestPath(moveData, start, end, radius, NULL);
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;
}
/******************************************************************************/
/******************************************************************************/
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