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float fsnap(float val,float fsize)
{
return rint(val / fsize) * fsize;
}
vector vsnap(vector point,float fsize)
{
vector vret;
vret_x = rint(point_x / fsize) * fsize;
vret_y = rint(point_y / fsize) * fsize;
vret_z = ceil(point_z / fsize) * fsize;
return vret;
}
float location_isok(vector point, float water_isok, float air_isok)
{
float pc,pc2;
if(trace_dphitq3surfaceflags & Q3SURFACEFLAG_SKY)
return 0;
pc = pointcontents(point);
pc2 = pointcontents(point - '0 0 1');
switch(pc)
{
case CONTENT_SOLID:
break;
case CONTENT_SLIME:
break;
case CONTENT_LAVA:
break;
case CONTENT_SKY:
break;
case CONTENT_EMPTY:
if (pc2 == CONTENT_SOLID)
return 1;
if (pc2 == CONTENT_EMPTY)
if(air_isok)
return 1;
if (pc2 == CONTENT_WATER)
if(water_isok)
return 1;
break;
case CONTENT_WATER:
if (water_isok)
return 1;
break;
}
return 0;
}
entity pathlib_nodeatpoint(vector where)
{
entity node;
++pathlib_searched_cnt;
where_x = fsnap(where_x,pathlib_gridsize);
where_y = fsnap(where_y,pathlib_gridsize);
node = findradius(where,pathlib_gridsize * 0.5);
while(node)
{
if(node.is_path_node == TRUE)
return node;
node = node.chain;
}
return world;
}
float tile_check_cross(vector where)
{
vector p,f,r;
f = PLIB_FORWARD * tile_check_size;
r = PLIB_RIGHT * tile_check_size;
// forward-right
p = where + f + r;
traceline(p+tile_check_up,p-tile_check_down,MOVE_WORLDONLY,self);
if not (location_isok(trace_endpos,1,0))
return 0;
// Forward-left
p = where + f - r;
traceline(p+tile_check_up,p-tile_check_down,MOVE_WORLDONLY,self);
if not (location_isok(trace_endpos,1,0))
return 0;
// Back-right
p = where - f + r;
traceline(p+tile_check_up,p-tile_check_down,MOVE_WORLDONLY,self);
if not (location_isok(trace_endpos,1,0))
return 0;
//Back-left
p = where - f - r;
traceline(p+tile_check_up,p-tile_check_down,MOVE_WORLDONLY,self);
if not (location_isok(trace_endpos,1,0))
return 0;
return 1;
}
float tile_check_plus(vector where)
{
vector p,f,r;
f = PLIB_FORWARD * tile_check_size;
r = PLIB_RIGHT * tile_check_size;
// forward
p = where + f;
traceline(p+tile_check_up,p-tile_check_down,MOVE_WORLDONLY,self);
if not (location_isok(trace_endpos,1,0))
return 0;
//left
p = where - r;
traceline(p+tile_check_up,p-tile_check_down,MOVE_WORLDONLY,self);
if not (location_isok(trace_endpos,1,0))
return 0;
// Right
p = where + r;
traceline(p+tile_check_up,p-tile_check_down,MOVE_WORLDONLY,self);
if not (location_isok(trace_endpos,1,0))
return 0;
//Back
p = where - f;
traceline(p+tile_check_up,p-tile_check_down,MOVE_WORLDONLY,self);
if not (location_isok(trace_endpos,1,0))
return 0;
return 1;
}
float tile_check_star(vector where)
{
if(tile_check_plus(where))
return tile_check_cross(where);
return 0;
}
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