slime.lua

require("lovepunk.entity")
require("helpfuldog")
require("hiteffect")
Slime = Enemy.new(0, 0, 18, 18)
Slime.__index = Slime

shader = love.graphics.newShader[[
extern float WhiteFactor;

vec4 effect(vec4 vcolor, Image tex, vec2 texcoord, vec2 pixcoord)
{
    vec4 outputcolor = Texel(tex, texcoord) * vcolor;
    outputcolor.rgb += vec3(WhiteFactor);
    return outputcolor;
}
]]

function Slime.new(x, y, player)
	local self = setmetatable({}, Slime)
	self.x = x
	self.y = y
	self.player = player
	self.v = {x=0.5, y=0}
	local rand = randomRange(1, 2)

	self.type = "enemy"
	self.image = love.graphics.newImage("assets/img/slime.png")

	local anim8 = require "libs.anim8"
	local grid = anim8.newGrid(24, 24, self.image:getWidth(), self.image:getHeight())
	self.anim = anim8.newAnimation(grid('1-4', 1), 0.1)
	self.stunAnim = anim8.newAnimation(grid(5, 1), 0.1)
	self.currentAnim = self.anim
	self.damageCounter = 0
	self.flickerCounter = 0
	self.flickerAmt = 5
	self.oldDir = 0

	self.friction = 0.9
	self.gravity = 0.5
	self.health = 10
	self.stunned = false
	self.canBeSucked = false
	self.suckType = SUCKTYPE_SLIME
	self.originY = 6
	return self

end
function Slime:update(dt)
	Enemy.update(self, dt)

	self.damageCounter = self.damageCounter - 1

	if (not self.stunned) then
		local distToAdd = 0
		if (self.v.x > 0) then distToAdd = distToAdd + self.width end

		local items, len = self.scene.bumpWorld:queryRect(self.x + distToAdd, self.y + self.height + 1, 2, 2) -- 1 pixel below the left bottom corner of the object
		local foundLevel = false
		for i, v in ipairs(items) do
			if (v.type == "level") then foundLevel = true end
		end
		if self:collide("level", self.x + self.v.x, self.y-1) or not foundLevel then
			self.v.x = self.v.x * -1
		end
	end

	local ball = self:collide("dustball", self.x, self.y)
	if ball then
		self.scene:remove(ball)
		self:takeDamage(ball, 1)
	end
	self:updateAnimation(dt)

end

function Slime:draw()
	if self.damageCounter > 0 then
		love.graphics.setShader(shader)
		shader:send("WhiteFactor", 0.5)
	end
	Enemy.draw(self)
	self.currentAnim:draw(self.image, self.x, self.y, 0, self.scaleX, self.scaleY, self.originX, self.originY)
	love.graphics.setShader()
end
function Slime:updateAnimation(dt)

	self.currentAnim:update(dt)
	self:flip(self.v.x<0)
end
function Slime:takeDamage(e, amt)

	if self.damageCounter > 0 or self.stunned then return end
	local push = normalize(e.v, 1)
	self.oldDir = self.v.x
	--self.v.x = push.x
	--self.v.y = push.y
	self.health = self.health - amt
	if self.health == 0 then self:stun() end
	self.damageCounter = 5
end
function Slime:die()
	self.scene:add(HitFx.new(self.x, self.y))
	self.scene:remove(self)
end
function Slime:stun()
	self.isSuckable = true
	self.scene:add(HitFx.new(self.x+self.width/2, self.y+self.height/2))
	self.stunned = true
	self.currentAnim = self.stunAnim
	self.v.x = 0
	self.v.y = 0
	self.isSuckable = true
end
function Slime:flip(reverse)
	if (reverse) then
		self.originX = self.width+4
	else
		self.originX = 4
	end
	Enemy.flip(self, reverse)
end