g3d = require "g3d"



function love.load()
	-- GRAPHICS
		-- GOOD PIXEL
	love.graphics.setDefaultFilter("nearest")
		-- FONTS
	DefaultFont = love.graphics.newImageFont("default_font.png",
   " abcdefghijklmnopqrstuvwxyz" ..
   "ABCDEFGHIJKLMNOPQRSTUVWXYZ0" ..
	 "123456789.,!?-+/():;%&`'*#=[]\"")
	love.graphics.setFont(DefaultFont)
	
	g3d.camera.position = { (math.random(-1.5,-0.5)-1)*2 , -1, (math.random(-1.5,-0.5)-1)*2 }

	speed = 0
	require "objects"
	require "levels"
	current_level = levels.main_menu

end

function love.mousemoved(x,y, dx,dy)

	if not game_pause then
		g3d.camera.firstPersonLook(dx,dy)
	end

end

function love.update(dt)
	-- run, walk, slow?
	if love.keyboard.isDown("lshift") then 
		speed = 2 
	elseif love.keyboard.isDown("lctrl") then
		speed = 6
	else
		 speed = 4
	end 
	
	if not game_pause then
		g3d.camera.firstPersonMovement(dt,speed)
	end
	
end

function love.keypressed(key)
	-- pause the game and free the mouse
	if key == "escape" then 
		if game_pause then
			game_pause = false
			love.mouse.setRelativeMode(true)
		else
			game_pause = true
			love.mouse.setRelativeMode(false)
			love.mouse.setPosition(game_width/2,game_height/2)
		end
	end
	
end
 
function love.draw()
	-- get drawing globals
	game_width = love.graphics.getWidth()
	game_height = love.graphics.getHeight()

	-- draw everything
	local obj_count = 0
	for _, obj in pairs(current_level.obj_list) do
		obj_count = obj_count + 1
		if obj.model ~= nil then
		
			-- do animated models
			if obj.is_animated == true and obj.anim_path ~= nil then
				-- try to animate
				obj.anim_subframe = obj.anim_subframe + 1
				if obj.anim_subframe >= obj.anim_speed then
					obj.anim_frame = obj.anim_frame + 1
					obj.anim_subframe = obj.anim_subframe - obj.anim_speed
				end
				-- cycle
				if obj.anim_frame >= obj.anim_frames+1 then obj.anim_frame = obj.anim_frame - obj.anim_frames end
				-- change
				obj.model.mesh:setTexture(obj.anim_imgs[obj.anim_frame])
			end
			
			-- do rotating models
			if obj.rotate_mode ~= nil and obj.rotate_mode ~= "none" then
				local rm = obj.rotate_mode
					
				if rm == "cam_xz" then
				
					local sin = g3d.camera.position[1]-obj.model.translation[1]
					local cos = g3d.camera.position[3]-obj.model.translation[3]
					
					local angle = math.atan2(sin,cos)-math.rad(180)
					
					obj.model:setRotation(0,angle,0)
				end
			end
			
			obj.model:draw()
		else		
			obj:draw()
		end
	end
	-- print coords

	if game_pause then
		draw_pause_menu(30,30)
	else
		love.graphics.print("x: "..math.floor(g3d.camera.position[1])..", y: "..math.floor(g3d.camera.position[2])..", z: "..math.floor(g3d.camera.position[3]), x, y)
	end
	
	for _, obj in pairs(current_level.obj_list) do
		if obj.model ~= nil then
			if obj.is_animated then
				love.graphics.print("["..obj.name.."] frame: "..obj.anim_frame.."/"..obj.anim_frames..", rm: \""..obj.rotate_mode.."\"",20,20)
				love.graphics.print("["..obj.name.."] animation: "..obj.anim_path,20,40)
			end
		end
	end
end

function draw_pause_menu(x,y)
		love.graphics.setColor(1,1,1,0.3)
			love.graphics.rectangle("fill", x, y, game_width-2*x, game_height-2*y)
		love.graphics.setColor(1,1,1,1)
end