enemy.gui_script

local global = require "main.global"  -- Import the module



function init(self)
	self.health_bar_node = gui.get_node("bar") 
	self.owner = nil
	self.camera_position = vmath.vector3(0, 0, 0)
	self.global_pos = vmath.vector3()
	msg.post(".", "release_input_focus")
end

function on_message(self, message_id, message, sender)
	if message_id == hash("update_health") then

		self.global_pos = global.convert_click_pos(message.position, self.camera_position) 
		self.global_pos.y = self.global_pos.y + 15

		local health_ratio = math.max(0, math.min(message.health / message.max_health, 1)) -- Ensure range [0,1]
		local red = 1 - health_ratio  -- More red when health is low
		local green = health_ratio     -- More green when health is high
		local color = vmath.vector4(red, green, 0, 1) -- RGB with full opacity

		gui.set_position(self.health_bar_node, self.global_pos)
		local max_width = 100  -- Set max width of the bar
		local new_width = max_width * health_ratio
		local size = gui.get_size(self.health_bar_node)
		size.x = new_width*2
		gui.set_size(self.health_bar_node, size)
		gui.set_color(self.health_bar_node, color)

	elseif message_id == hash("offset") then
		-- Update the camera position
		self.camera_position = message.pos
		if self.owner then
			local owner_position = go.get_position(self.owner)  -- Get owner's new position
			self.global_pos = global.convert_click_pos(owner_position, self.camera_position)
			--gui.set_position(self.health_node, self.global_pos)
		end
	end
end