-- Copyright (C) 2007, 2010 - Bit-Blot
--
-- This file is part of Aquaria.
--
-- Aquaria is free software; you can redistribute it and/or
-- modify it under the terms of the GNU General Public License
-- as published by the Free Software Foundation; either version 2
-- of the License, or (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
--
-- See the GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

if not v then v = {} end
if not AQUARIA_VERSION then dofile("scripts/entities/entityinclude.lua") end

-- ================================================================================================
-- N A U P L I U S
-- ================================================================================================

-- ================================================================================================
-- S T A T E S
-- ================================================================================================

local MOVE_STATE_UP = 0
local MOVE_STATE_DOWN = 1

-- ================================================================================================
-- L O C A L  V A R I A B L E S 
-- ================================================================================================

v.blupTimer = 0
v.dirTimer = 0
v.blupTime = 3.0

v.fireDelay = 2
v.moveTimer = 0
v.maxShots = 3
v.lastShot = v.maxShots

-- ================================================================================================
-- F U N C T I O N S
-- ================================================================================================

v.sz = 1.0
v.dir = 0

v.moveState = 0
v.moveTimer = 0
v.velx = 0

v.soundDelay = 0

v.dir = ORIENT_UP

local function doIdleScale(me)	
	entity_scale(me, 1.0*v.sz, 0.80*v.sz, v.blupTime, -1, 1, 1)
end

function init(me)
	setupBasicEntity(
	me,
	"nauplius",						-- texture
	4,								-- health
	2,								-- manaballamount
	2,								-- exp
	10,								-- money
	32,								-- collideRadius (for hitting entities + spells)
	STATE_IDLE,						-- initState
	128,							-- sprite width	
	128,							-- sprite height
	1,								-- particle "explosion" type, 0 = none
	0,								-- 0/1 hit other entities off/on (uses collideRadius)
	4000,							-- updateCull -1: disabled, default: 4000
	1
	)
	
	entity_setEntityType(me, ET_ENEMY)
	
	entity_setDeathParticleEffect(me, "PurpleExplode")
	entity_setDropChance(me, 5)
	entity_setEatType(me, EAT_FILE, "Jelly")
	
	entity_initHair(me, 40, 5, 30, "nauplius-tentacles")
	
	entity_scale(me, 0.75*v.sz, 1*v.sz)
	doIdleScale(me)
	
	entity_exertHairForce(me, 0, 400, 1)
	
	entity_setState(me, STATE_IDLE)	
end

function update(me, dt)
	dt = dt * 1.5
	if avatar_isBursting() or entity_getRiding(getNaija())~=0 then
		local e = entity_getRiding(getNaija())
		if entity_touchAvatarDamage(me, 32, 0, 400) then
			if e~=0 then
				local x,y = entity_getVectorToEntity(me, e)
				x,y = vector_setLength(x, y, 500)
				entity_addVel(e, x, y)
			end
			local len = 500
			local x,y = entity_getVectorToEntity(getNaija(), me)
			x,y = vector_setLength(x, y, len)
			entity_push(me, x, y, 0.2, len, 0)
			entity_sound(me, "JellyBlup", 800)
		end	
	else
		if entity_touchAvatarDamage(me, 32, 0, 1000) then		
			entity_sound(me, "JellyBlup", 800)
		end
	end
	entity_handleShotCollisions(me)
	v.sx,v.sy = entity_getScale(me)
		
		
	-- Quick HACK to handle getting bumped out of the water.  --achurch
	if not entity_isUnderWater(me) then
		v.moveState = MOVE_STATE_DOWN
		v.moveTimer = 5 + math.random(200)/100.0 + math.random(3)
		entity_setMaxSpeed(me, 500)
		entity_setMaxSpeedLerp(me, 1, 0)
		entity_addVel(me, 0, 500*dt)
		entity_updateMovement(me, dt)
		entity_setHairHeadPosition(me, entity_x(me), entity_y(me))
		entity_updateHair(me, dt)
		return
	elseif not entity_isState(me, STATE_PUSH) then
		entity_setMaxSpeed(me, 50)
	end
	
	v.moveTimer = v.moveTimer - dt
	if v.moveTimer < 0 then
		if v.moveState == MOVE_STATE_DOWN then		
			v.moveState = MOVE_STATE_UP
			v.fireDelay = 0.5
			entity_setMaxSpeedLerp(me, 1.5, 0.2)
			entity_scale(me, 0.80, 1, 1, 1, 1)
			v.moveTimer = 3 + math.random(200)/100.0
			entity_sound(me, "JellyBlup")
		elseif v.moveState == MOVE_STATE_UP then
			v.moveState = MOVE_STATE_DOWN
			doIdleScale(me)
			entity_setMaxSpeedLerp(me, 1, 1)
			v.moveTimer = math.random(4) + math.random(200)/100.0
		end
	end
	
	
	if v.moveState == MOVE_STATE_UP then
	
		if v.dir == ORIENT_UP then
			entity_addVel(me, 0, -4000*dt)
			if isObstructed(entity_x(me), entity_y(me)-40) then
				v.dir = ORIENT_DOWN
			end
		elseif v.dir == ORIENT_DOWN then
			entity_addVel(me, 0, 4000*dt)
			if isObstructed(entity_x(me), entity_y(me)+40) then
				v.dir = ORIENT_UP
			end
		end
		

		--entity_rotateToVel(me, 1)

		if not(entity_hasTarget(me)) then
			entity_findTarget(me, 1200)
		else
			if v.fireDelay > 0 then
				v.fireDelay = v.fireDelay - dt
				if v.fireDelay < 0 then
					spawnParticleEffect("ArmaShot", entity_x(me), entity_y(me) - 80)
					local s = createShot("Raspberry", me, entity_getTarget(me), entity_x(me), entity_y(me) - 20)
					shot_setAimVector(s, entity_getNormal(me))
					shot_setOut(s, 64)
				
					if v.lastShot <= 1 then
						v.fireDelay = 4
						v.lastShot = v.maxShots
					else
						v.fireDelay = 0.5
						v.lastShot = v.lastShot - 1
					end				
				end
			end
		end

	elseif v.moveState == MOVE_STATE_DOWN then
		entity_addVel(me, 0, 50*dt)
		--entity_rotateTo(me, 0, 3)

		entity_exertHairForce(me, 0, 200, dt*0.6, -1)
	end

	
	entity_doEntityAvoidance(me, dt, 32, 1.0)
	entity_doCollisionAvoidance(me, 1.0, 8, 1.0)
	entity_updateCurrents(me, dt)
	entity_updateMovement(me, dt)
	
	entity_setHairHeadPosition(me, entity_x(me), entity_y(me))
	entity_updateHair(me, dt)

end

function hitSurface(me)
end

function dieNormal(me)
end

function enterState(me)
	if entity_isState(me, STATE_IDLE) then
		entity_setMaxSpeed(me, 50)
	elseif entity_isState(me, STATE_DEAD) then
	end
end

function damage(me, attacker, bone, damageType, dmg)
	if entity_isName(attacker, "Nauplius") then
		return false
	end

	if damageType == DT_AVATAR_BITE then
		entity_changeHealth(me, -dmg)
	end
	return true
end

function exitState(me)
end