//Lua扩展函数，取得对象位置x,y,z = GetUnitPosition("player")
int lua_GetUnitPosition( void* l ){
float v[6];
if( Lua_isstring(l,1) ){
size_t len;
const char * name = Lua_tolstring(l,1,&len);
void* punit = GetUnitByName( name );
if( punit ){
GetUnitPosition( punit,v );
Lua_pushnumber(l,v[0]);
Lua_pushnumber(l,v[1]);
Lua_pushnumber(l,v[2]);
return 3;
}else if(g_pFocusID&&strcmp(name,"focus")==0){
punit = GetUnit(*g_pFocusID,1);
if( punit ){
GetUnitPosition( punit,v );
Lua_pushnumber(l,v[0]);
Lua_pushnumber(l,v[1]);
Lua_pushnumber(l,v[2]);
return 3;
}
}
}
Lua_pushnil(l);
return 1;
}
//计算x,y,z和你的角度a=GetAngle(x,y,z)
int lua_GetAngle( void* l ){
float uv[3],pv[3],av[3],sv[3];
bool isok = true;
if( Lua_isnumber(l,1) ){
uv[0] = (float)Lua_tonumber(l,1);
}else isok = false;
if( Lua_isnumber(l,2) ){
uv[1] = (float)Lua_tonumber(l,2);
}else isok = false;
if( Lua_isnumber(l,3) ){
uv[2] = (float)Lua_tonumber(l,3);
}else isok = false;
if( isok ){
size_t len;
const char * name = Lua_tolstring(l,1,&len);
void* pplayer = GetUnitByName(sPlayer);
if( pplayer ){
GetUnitPosition( pplayer,pv );
GetUnitDirection( pplayer,av );
vector_sub( sv,uv,pv );
sv[2] = 0;
double a = vector_angle(av,sv);
a *= 180/M_PI;
Lua_pushnumber( l,a );
return 1;
}
}
Lua_pushnil(l);
return 1;
}
//计算x,y,z和你的距离d=GetDistance(x,y,z)
int lua_GetDistance( void* l ){
float uv[3],pv[3],v[3];
bool isok = true;
if( Lua_isnumber(l,1) ){
uv[0] = (float)Lua_tonumber(l,1);
}else isok = false;
if( Lua_isnumber(l,2) ){
uv[1] = (float)Lua_tonumber(l,2);
}else isok = false;
if( Lua_isnumber(l,3) ){
uv[2] = (float)Lua_tonumber(l,3);
}else isok = false;
if( isok ){
size_t len;
const char * name = Lua_tolstring(l,1,&len);
void* pplayer = GetUnitByName(sPlayer);
if( pplayer ){
GetUnitPosition( pplayer,pv );
// pv[2] = 0;
// uv[2] = 0;
vector_sub(v,pv,uv);
Lua_pushnumber( l,vector_mod( v ) );
return 1;
}
}
Lua_pushnil(l);
return 1;
}
/** Generates a pseudo-random unit vector, uniformly distributed over all directions. */
FVector4 GetUnitVector(FLMRandomStream& RandomStream)
{
return GetUnitPosition(RandomStream).GetUnsafeNormal3();
}