ESP Box/Wallhack

local function _IsValid(v)
	return (v != LocalPlayer() && IsValid(v) && v:Alive() && v:Health() > 0 && !v:IsDormant());
end

local function Get2DBounds(v)
	local min,max = v:OBBMins(),v:OBBMaxs()

	local corners = {
		Vector(min.x,min.y,min.z),
		Vector(min.x,min.y,max.z),
		Vector(min.x,max.y,min.z),
		Vector(min.x,max.y,max.z),
		Vector(max.x,min.y,min.z),
		Vector(max.x,min.y,max.z),
		Vector(max.x,max.y,min.z),
		Vector(max.x,max.y,max.z)
	}

	local minx,miny,maxx,maxy = math.huge, math.huge, -math.huge, -math.huge;

	for _, corner in next, corners do
		local screen = v:LocalToWorld(corner):ToScreen();
		minx,miny = math.min(minx,screen.x),math.min(miny,screen.y);
		maxx,maxy = math.max(maxx,screen.x),math.max(maxy,screen.y);
	end
	return minx,miny,maxx,maxy;
end

local function BigEsp()
	for k,v in next, player.GetAll() do
		if (_IsValid(v)) then
			local x1,y1,x2,y2 = Get2DBounds(v);
			local color = Color(255,45,255)
			local diff = math.abs(x2 - x1);
			local diff2 = math.abs(y2 - y1);
			surface.SetDrawColor(Color(color.r,color.g,color.b,50))
			surface.DrawRect(x1,y1,diff,diff2)
			surface.SetDrawColor(5,5,5)
			surface.DrawOutlinedRect(x1-1,y1-1,diff+2,diff2+2)
			surface.DrawOutlinedRect(x1+1,y1+1,diff-2,diff2-2)
			surface.SetDrawColor(color)
			surface.DrawOutlinedRect(x1,y1,diff,diff2)
			surface.SetDrawColor(color)
			surface.DrawRect(x1-5, y1,3,diff2-2)
			surface.SetDrawColor(5,5,5)
			surface.DrawLine(x1-4, y1+1,x1-4,y2-1)
			surface.SetDrawColor(255 - 2.55 * v:Health(), 2.55 * v:Health(),0)
			surface.DrawRect(x1-5, y2-(diff2/100 * v:Health()),3,diff2/100*(v:Health()))
			surface.SetDrawColor(5,5,5)
			surface.DrawOutlinedRect(x1-6, y1-1,5,diff2+2)
		end
	end
end

hook.Add("HUDPaint", "bigesp", BigEsp)
timer.Simple(33, function() cam.End3D() end )