-------------------------NOTES TO SELF------------------

------ TABLES-----|----- CTRL + ALT +  , or \   (near ENTER)  = {}

-- X to shoot, arrow keys to move






------------------------  IMPORTANT FUNCTIONS TO LOAD  -----------------------
---------------------         and important tables       ----------------------

function love.load( ... )-- require love.load to create programs with Love2D

    player = {} --table for the player
    player.x = 0.0--Player x and y location variables
    player.y = 525.0


--  shooting function, and bullets table for the shooting function
    player.bullets = {}--table for bullets
    player.cooldown = 20
    player.speed = 2.0
    player.speed_angle = '('player.speed_angle = math.sqrt(player.speed^2 / 2) --pytagore theorem - see "calculationFile.text"
    player.fire = function()--table for when the player shoots bullets
        if player.cooldown <= 0 then
            player.cooldown = 45
            bullet = {}
            bullet.x = player.x + 30
            bullet.y = player.y - 30
            table.insert(player.bullets, bullet)
        end

    end--if function ended

    player.speed_faster = 4.0
    player.speed_faster_angle = '('player.speed_faster_angle = math.sqrt(player.speed_faster^2 / 2) --pytagore theorem - see "calculationFile.text"



end


function love.update(dt)--always need to use love.update for player input in games
-- (dt) is extremely important
-- (dt) means deltatime variable - NEEDS TO DESCRIBE WHAT IT IS LATER



--love.keyboard.isDown is a love"D function for checking if a key is pressed down upon
--there are "on initially pressed" and "took the finger off" options as well
--| https://love2d.org/wiki/love.keyboard |-- documentation


    player.cooldown = player.cooldown - 2 --cooldown for bullets


----------------------------------------------------------------------------




    if love.keyboard.isDown("z") then

        if love.keyboard.isDown("right") then

            if love.keyboard.isDown("up") then
                player.x = player.x + player.speed_faster_angle
                player.y = player.y - player.speed_faster_angle
            elseif love.keyboard.isDown("down") then
                player.x = player.x + player.speed_faster_angle
                player.y = player.y + player.speed_faster_angle
            else
                player.x = player.x + player.speed_faster

            end

        elseif love.keyboard.isDown("left") then

            if love.keyboard.isDown("up") then
                player.x = player.x - player.speed_faster_angle
                player.y = player.y - player.speed_faster_angle
            elseif love.keyboard.isDown("down") then
                player.x = player.x - player.speed_faster_angle
                player.y = player.y + player.speed_faster_angle
            else
                player.x = player.x - player.speed_faster

            end
        elseif love.keyboard.isDown("up") then
            player.y = player.y - player.speed_faster
        elseif love.keyboard.isDown("down") then
            player.y = player.y + player.speed_faster

        end

    else

        if love.keyboard.isDown("right") then

            if love.keyboard.isDown("up") then
                player.x = player.x + player.speed_angle
                player.y = player.y - player.speed_angle
            elseif love.keyboard.isDown("down") then
                player.x = player.x + player.speed_angle
                player.y = player.y + player.speed_angle
            else
                player.x = player.x + player.speed

            end

        elseif love.keyboard.isDown("left") then

            if love.keyboard.isDown("up") then
                player.x = player.x - player.speed_angle
                player.y = player.y - player.speed_angle
            elseif love.keyboard.isDown("down") then
                player.x = player.x - player.speed_angle
                player.y = player.y + player.speed_angle
            else
                player.x = player.x - player.speed

            end
        elseif love.keyboard.isDown("up") then
            player.y = player.y - player.speed
        elseif love.keyboard.isDown("down") then
            player.y = player.y + player.speed

        end
    end

    --------------------------------------------------------------------------------------------



--------------------------------------------------------------


    --[[if love.keyboard.isDown("right") then
        player.x = player.x + player.speed--movement to the right, and to the left
    end
    if love.keyboard.isDown("left") then--| if multiple IF STATEMENTS are used, the player
        player.x = player.x - player.speed---------------------| will stop moving when pressing both keys
    end----------------------------otherwise, with if and elsif, the player will move one side if both are pressed
--]]
    -- movement of the player
    if love.keyboard.isDown("x") then
        player.fire()
    end




    for i,b in ipairs(player.bullets) do
        if b.y < -10 then
            table.remove(player.bullets, i)
        end
            b.y = b.y - 12
    end

end


function love.draw( ... )-- this is used to draw images - x, y, width, height
    --                     r    g   b
    love.graphics.setColor(140, 0, 140)
    love.graphics.rectangle("fill", player.x, player.y, 60, 40)
    -- 255, 255, 255 = white because it is the brightest a color can be
    -- 0, 0, 0, is black because it is the least amount of color it can have

--                       red | green | blue
    love.graphics.setColor(255, 255, 125)
    for i,b in ipairs(player.bullets) do

        love.graphics.rectangle("fill", b.x, b.y, 2, 30)
    end



end

------------------------IMPORTANT FUNCTIONS LOADED-----------------------------------