local Gauss
local C4Distance = 0
local box = gui.Groupbox(gui.Reference('VISUALS', "OTHER", "Options"), "Lethal C4 Radius", 0, 280, 213, 290); --change "280" to a higher number if its overlaps with some other groupbox
local check = gui.Checkbox(box, "check", "Active", 1)
local health_wanted = gui.Slider(box, "health_wanted", "Health Left in % from Current Health", 1, 0, 100);
local slider_r = gui.Slider(box, "slider_r", "Red", 221, 0, 255);
local slider_g = gui.Slider(box, "slider_g", "Green", 33, 0, 255);
local slider_b = gui.Slider(box, "slider_b", "Blue", 33, 0, 255);
local slider_a = gui.Slider(box, "slider_a", "Alpha", 80, 0, 255);

function calc_dmg(Bomb, Player,BombZ,PlayerZ)

local bro_idk = 1
if(engine.GetMapName() == "de_nuke") then
bro_idk = 2.135
else
bro_idk = 1
end

	Gauss = (math.sqrt((C4Distance^2)+((BombZ-PlayerZ)^2)) - 75.68) / 789.2
	local flDamage = 450.7/bro_idk * math.exp(-Gauss * Gauss);

	if Player:GetProp("m_ArmorValue") > 0 then
		local flArmorRatio = 0.5;
		local flArmorBonus = 0.5;

		if Player:GetProp("m_ArmorValue") > 0 then
			local flNew = flDamage * flArmorRatio;
			local flArmor = (flDamage - flNew) * flArmorBonus;

			if flArmor > Player:GetProp("m_ArmorValue") then
				flArmor = Player:GetProp("m_ArmorValue") * (1 / flArmorBonus);
				flNew = flDamage - flArmor;
			end

			flDamage = flNew;
		end
	end

	return math.max(flDamage, 0);
end

local function drawCircle(x, y, z, radius, thickness, quality)
	local quality = quality or 20
	local thickness = thickness or 8
	local Screen_X_Line_Old, Screen_Y_Line_Old
	for rot = 0, 360, quality do
		local rot_temp = math.rad(rot)
		local LineX, LineY, LineZ = radius * math.cos(rot_temp) + x, radius * math.sin(rot_temp) + y, z
		local Screen_X_Line, Screen_Y_Line = client.WorldToScreen(LineX, LineY, LineZ)
		if Screen_X_Line ~= nil and Screen_X_Line_Old ~= nil then
			draw.SetFont(draw.CreateFont("Tahoma", 12));
			draw.Line(Screen_X_Line, Screen_Y_Line, Screen_X_Line_Old, Screen_Y_Line_Old)
			for i = 0, thickness do
				draw.Line(Screen_X_Line, Screen_Y_Line + i, Screen_X_Line_Old, Screen_Y_Line_Old + i)
			end
		end
		Screen_X_Line_Old, Screen_Y_Line_Old = Screen_X_Line, Screen_Y_Line
	end
end

callbacks.Register("Draw", function()

	if check:GetValue() then
	 local healthW = math.floor(health_wanted:GetValue())/100
		local local_player = entities.GetLocalPlayer();
		local bomb = entities.FindByClass("CPlantedC4")[1];

		if (bomb == nil or local_player == nil or not local_player:IsAlive()) then return end

		if not (bomb:GetProp("m_bBombTicking") and bomb:GetProp("m_bBombDefused") == 0 and globals.CurTime() < bomb:GetProp("m_flC4Blow")) then
			return
		end
		local bomb_origin_x, bomb_origin_y, bomb_origin_z = bomb:GetAbsOrigin()
		local player_origin_x, player_origin_y, player_origin_z = local_player:GetAbsOrigin()
		local damage
		local radius = 0


		repeat
			damage = calc_dmg(bomb, local_player,bomb_origin_z,player_origin_z)
			health_left = local_player:GetHealth() - damage
			print(local_player:GetHealth()*healthW,math.floor(health_left+0.5))
			if math.floor(health_left) < local_player:GetHealth()*healthW then
				C4Distance = C4Distance + 1
			end

			if math.floor(health_left) > local_player:GetHealth()*healthW and math.floor(health_left) ~= local_player:GetHealth()*healthW  then
			C4Distance = C4Distance - 1
			end
		until (C4Distance == 1500 or health_left > 0)

		radius = C4Distance

		-- thick circle
		--print(C4Distance,(math.sqrt((C4Distance^2)+((bomb_origin_z-player_origin_z)^2))),health_left)
		draw.Color(slider_r:GetValue(), slider_g:GetValue(), slider_b:GetValue(), slider_a:GetValue());
		drawCircle(bomb_origin_x, bomb_origin_y, player_origin_z, radius, 10, 1)
	end
end)

client.AllowListener('bomb_exploded')
client.AllowListener('round_start')
callbacks.Register('FireGameEvent', function(event)
	if (event:GetName() == "bomb_exploded" or event:GetName() == "round_start") then
		C4Distance = 0
	end
end)