AI Turret

turret.lua

local sentry = {
	body = {},
	x = 100,
	y = 200
}
local bullet = ''
local area = 300

function eventLoop()
	for n,player in pairs(tfm.get.room.playerList) do
		px, py = tfm.get.room.playerList[n].x, tfm.get.room.playerList[n].y
		lx, ly = math.abs(sentry.x-px), math.abs(sentry.y-py)
		R = area
		if lx^2 + ly^2 <= R^2 then
			local c, a, b = math.sqrt(((px-(sentry.x+area))^2)+((py-sentry.y)^2)), math.sqrt(((px-sentry.x)^2)+((py-sentry.y)^2)), area
			angle = math.deg(math.acos(((c^2)-(a^2)-(b^2))/(-2*a*b)))
			rad = math.acos(((c^2)-(a^2)-(b^2))/(-2*a*b))
			tfm.exec.removeObject(bullet)
			if px>sentry.x and py>sentry.y then
				angle, sx, sy = angle, 50*(1.5-rad), 50*(rad)
			elseif px<sentry.x and py>sentry.y then
				angle, sx, sy = angle, 50*(1.5-rad), 50*(3-rad)
			elseif px<sentry.x and py<sentry.y then
				angle, sx, sy = 360-angle, -50*(1.5-(3-rad)), -50*((3-rad))
			elseif px>sentry.x and py<sentry.y then
				angle, sx, sy = 360-angle, -50*(1.5-(3-rad)),-50*(3-(3-rad))
			end
			bullet = tfm.exec.addShamanObject(35,sentry.x,sentry.y,angle,sx,sy,false)
		end
	end
	for i = 1, 360, 10 do
		local angle = i*math.pi/180
		local mtx, mty = sentry.x+R*math.cos(angle), sentry.y+R*math.sin(angle)
		tfm.exec.displayParticle(0,mtx,mty,0,0,0,0,nil)
	end
	tfm.exec.displayParticle(1,sentry.x,sentry.y,0,0,0,0,nil)
end