Draw text on screen

Questions
1

Hey, i have a code that draws random cards when you tap the pack.
But i want some specific cards when they flipped over you get a text drawn in the screen.

This is my main code

-- Use this function to perform your initial setup
function setup()
    --b=Backup("Cards v105")
    img=readImage("Documents:cb") --image for back of card
    numDecks = 1
    deal()
    print("Turn the card!")
end

function touched(touched)
    -- this examines if the touch is within the rectangle's boundraries:
    if touched.state == ENDED then
        if CurrentTouch.x > 308 and CurrentTouch.x < 494 and CurrentTouch.y > 317 and CurrentTouch.y < 602 then
            cards[((52*numDecks)+1)-#p.pack]=p:nextCard()
        end
    end
end

function deal()
    c=Card(250,img)  --big cards 
    p=Pack(numDecks)
    cards={}
end



-- This function gets called once every frame
function draw()
    -- This sets a background
    -- ipad size:2048,1536
    sprite("Documents:bg1", 512, 384, 1024, 768)
   -- sprite("Documents:pause", 50, 718, 50, 50)
   -- sprite("Documents:cb", 401, 462, 186, 290)
    -- This sets the line thickness
    strokeWidth(5)

    -- Do your drawing here
    --draw our hand of cards
    --spread out cards to look nice
    for i,card in ipairs(cards) do
    c:draw(541+((i-1)%4)*2,555,card.cardIndex,true)
    end
    --draw a pack face down
    for i=1,math.min(5,#p.pack) do
       c:draw(312+i*2,590-i*2,1,false) 
end
end
2

Use font(choose with font picker) to set the font, fontSize(size in points) to set the font size, and then text(string, x, y) to draw it to the screen. Also, when you draw the background, I would recommend using WIDTH and HEIGHT when specifying the size and position of the image, as it changes depending if you’re on an iPad, iPad Mini, iPhone, etc.

3

Is it possible when an ace is flipped over, it draws some text on the screen"reverse" and whenyou flipthe next card the drawn text is gone?

Here is my card drawing code

--# Card
Card = class()
--[[this class builds and draws the card images from scratch and provides some utilities
 
--]]
 
--class initialises by creating card design
--Parameters:
--height of card in pixels
--the image to be used on the back
--background color on the face of the card
--(optional) background color on the back of the card
-- (optional) color along the border ofthe card
 
--returns nothing
function Card:init(height,backImg,faceColor,backColor,borderColor)
    self.height = height
    self.backImg=backImg
    self.f=height/200 --scale font size to card size
    self.faceColor=faceColor or color(255)
    local x=100    --default border color
    self.borderColor=borderColor or color(x, x, x, 255)
    x=x*1.5 --corners are drawn with circles which appear darker than lines, so lighten colour for them
    self.cornerColor=borderColor or color(x,x,x, 150)
    self.backColor=backColor or color(240, 239, 237, 255)
    self:createCard()
    self:createSuits()
    self.value={"A","2","3","4","5","6","7","8","9","10","J","Q","K"}
    self.suit={"S","H","D","C"}
end
 
--this and the next function build just the front and back of the card itself
--the main problem is rounded corners
--this is done by drawing circles at the corners and then overlapping rectangles forthe final effect
function Card:createCard()
    self.cardFace=self:createOutline(true)
    self.cardBack=self:createOutline(false)
end
 
function Card:createOutline(face)
    --use standard 25/35 ratio
    self.width=math.floor(self.height*30/45+.5)
    local img=image(self.width,self.height)
    --create rounded corner on top right
    local corner=0,05 --distance from end of card as percent of height
    local c=math.floor(corner*self.height+0.5)
    setContext(img)
    pushStyle()
    strokeWidth(1)
    stroke(self.cornerColor)
    --set background colour
    if face then fill(self.faceColor) else fill(self.backColor) end
    --draw small circles at corners
    ellipse(self.width-c+1,self.height-c+1,c*2)
    ellipse(self.width-c+1,c-1,c*2)
    ellipse(c-1,self.height-c+1,c*2)
    ellipse(c-1,c-1,c*2)
    if face then stroke(self.faceColor) else stroke(self.backColor) end
    --now rectangles to fill in thre centre of the card
    rect(0,c,self.width,self.height-c*2)
    rect(c,0,self.width-c*2,self.height)
    --now a border round the card
    stroke(self.borderColor)
    line(0,c,0,self.height-c)
    line(c,0,self.width-c,0)
    line(self.width,c,self.width,self.height-c)
    line(c,self.height,self.width-c,self.height)
    --do picture on back 
    if face~=true then
        sprite("Documents:cb",img.width/2,img.height/2,img.width*.9)
    end
    popStyle()
    setContext()
    return img
end
 
--the suit images come from emoji
function Card:createSuits()
    font("AppleColorEmoji")
    self.suits={unicode2UTF8(9824),unicode2UTF8(9829),unicode2UTF8(9830),unicode2UTF8(9827)}
end
 
--draws a card at x,y with value of card (1-52), face=true if face up, a=angle in degrees (default 0)
function Card:draw(x,y,card,face,a)
    pushMatrix()
    translate(x+self.width/2,y-self.height/2)
    if a==nil then a=0 end
    rotate(a)
    if face then 
        if card>0 then self:drawDetails(card) else sprite(self.cardFace,0,0) end
    else
        sprite(self.cardBack,0,0)
    end
    popMatrix()
end
 
--draws the numbers and symbols on the front of the card
--one parameter = card value
function Card:drawDetails(card)
    sprite(self.cardFace,0,0)
    pushStyle()
    font("SourceSansPro-Regular")
    fontSize(24*self.f)
    --calculate suit and value of card
    card=card-1
    local v=card%13 
    local s=(card-v)/13+1
    v=v+1
    local w=self.cardFace.width
    local h=self.cardFace.height
    if s==1 or s==4 then fill(0,0, 0, 255) else fill(255,0,0,255) end   --fill is red or black
    
    --half the images on a card are upside down
    --so we do them in two loops, turning the card upside down between them
    --where the card is not exactly symmetrical, eg for odd numbers, we only draw on the first loop
    for i=1,2 do
        if i==2 then rotate(180) end --turn 180 degrees to do second loop
        local u=self.suits[s]
        text(self.value[v],-w*.4,h*.4) --text in corner of card
        fontSize(16*self.f)
        text(u,-w*.4,h*.28) --suit image
        fontSize(28*self.f)
        local ss=.13*h
        --now all the symbols arranged in the middle of the card
        if v==1 then
            if i==1 then text(u,0,0) end
        elseif v==2 then
            text(u,0,.3*h)
        elseif v==3 then
            if i==1 then text(u,0,0) end
            text(u,0,.3*h)
        elseif v==4 then
            text(u,-w*.18,.15*h)
            text(u,w*.18,.15*h)
        elseif v==5 then
            text(u,-w*.18,.3*h)
            text(u,w*.18,.3*h)
            if i==1 then text(u,0,0) end
        elseif v==6 then
            text(u,-w*.18,.3*h)
            text(u,w*.18,.3*h)
            text(u,-w*.18,0) 
        elseif v==7 then
            text(u,-w*.18,.3*h)
            text(u,w*.18,.3*h)
            text(u,-w*.18,0) 
            if i==1 then text(u,0,.15*h) end
        elseif v==8 then
            text(u,-w*.18,.3*h)
            text(u,w*.18,.3*h)
            text(u,-w*.18,0)
            text(u,0,.15*h)
        elseif v==9 then 
            text(u,-w*.18,.3*h)
            text(u,w*.18,.3*h)
            if i==1 then text(u,0,0) end
            text(u,-w*.18,.1*h)
            text(u,w*.18,.1*h)
        elseif v==10 then
            text(u,-w*.18,.3*h)
            text(u,w*.18,.3*h)
            text(u,-w*.18,.1*h)
            text(u,w*.18,.1*h)
            text(u,0,.2*h)
        else --royalty
            pushStyle()
            font("AppleColorEmoji")
            fill(255) 
            fontSize(84*self.f)
            if i==1 then 
                if v==11 then text(unicode2UTF8(128113)) 
                elseif v==12 then text(unicode2UTF8(128120)) 
                else text(unicode2UTF8(128116)) 
                end
            end
            popStyle()
        end
    end
    popStyle()
end
 
--used by Main and other classes
--given a value 1-52, it returns the value and suit in text and numbers, eg S,J,1,11
function Card:SuitValue(c)
    local v=(c-1)%13
    local s=(c-1-v)/13+1
    v = v + 1
    return self.value[v],self.suit[s],v,s
end
 
function unicode2UTF8(u) --needed for emoji
    u = math.max(0, math.floor(u)) -- A positive integer
    local UTF8
    if u < 0x80 then          -- less than  8 bits
        UTF8 = string.char(u)
    elseif u < 0x800 then     -- less than 12 bits
        local b2 = u % 0x40 + 0x80
        local b1 = math.floor(u/0x40) + 0xC0
        UTF8 = string.char(b1, b2)
    elseif u < 0x10000 then   -- less than 16 bits
        local b3 = u % 0x40 + 0x80
        local b2 = math.floor(u/0x40) % 0x40 + 0x80
        local b1 = math.floor(u/0x1000) + 0xE0
        UTF8 = string.char(b1, b2, b3)
    elseif u < 0x200000 then  -- less than 22 bits
        local b4 = u % 0x40 + 0x80
        local b3 = math.floor(u/0x40) % 0x40 + 0x80
        local b2 = math.floor(u/0x1000) % 0x40 + 0x80
        local b1 = math.floor(u/0x40000) + 0xF0
        UTF8 = string.char(b1, b2, b3, b4)
    elseif u < 0x800000 then -- less than 24 bits
        local b5 = u % 0x40 + 0x80
        local b4 = math.floor(u/0x40) % 0x40 + 0x80
        local b3 = math.floor(u/0x1000) % 0x40 + 0x80
        local b2 = math.floor(u/0x40000) % 0x40 + 0x80
        local b1 = math.floor(u/0x1000000) + 0xF8
        UTF8 = string.char(b1, b2, b3, b4, b5)
    else
        print("Error: Code point too large for Codea's Lua.")
    end
    return UTF8
end