--Gamestates/Game.lua
--by Fallstar

local Game = {}
local Gui = require "Quickie"

function Game:enter()
    Previous = "Gamestates/Menu"
end

local foes = {}
local nbFoes = 5 --Number of foes
local won = false
local turrets = {}
local nbTurrets = 4
local deadFoes = 0


function Game:reset()
    for i=1, nbFoes do
        table.insert(foes, { x = -i*20, y = 256, hp = 100})
    end
end


function Game:init()
    Game:reset()
end

function Game:mousepressed(x, y, button)
        if #turrets < nbTurrets then
                table.insert(turrets, { x = x } )
        end
end

function Game:update(dt)

    if not won and #turrets==nbTurrets then
        for i, foe in ipairs(foes) do
                for j, turret in ipairs(turrets) do
                    if foe and foe.x > turret.x-50 and foe.x < turret.x+51 and i % #turrets == j-1 then
                        foe.hp =foe.hp-1
                        if foe.hp <=0 then
                            foes[i]=false
                        end
                        end
                end
                if foe then
                    foe.x = foe.x+1
                end
        end
    elseif won then
        Gui.group.push{grow = "down", pos = {50,5}}
        Gui.Label{ text = "Bravo"}
        Gui.group.pop{}
    end


    if Game:tableSize(foes)==0 then
        won=true
    end
end

function Game:tableSize(tab)
    local cpt=0
    for i, val in ipairs(tab) do
        if val then
            cpt=cpt+1
        end
    end
    return cpt
end



function Game:draw()
    love.graphics.setBackgroundColor(100, 050, 200)
    for i, turret in ipairs(turrets) do
        if turret then
        love.graphics.setColor(255, 0, 0, 100)
        love.graphics.rectangle("fill", turret.x-50, 0, 100, 600)
        end
    end
    if not won then
        for i, foe in ipairs(foes) do
            if foe then
                love.graphics.setColor(0,0,0,255)
                love.graphics.circle("fill", foe.x, 300, 5, 100) --show foe i if it has hp
                love.graphics.print(foe.hp, foe.x, 400) --shows hp
            end
            love.graphics.print(Game:tableSize(foes), 300, 500)
        end
    end
    Gui.core.draw() --Draw Gui
end

return Game