Some flys here

lupino8211 · August 2014

Hi guys, it's my first topic and this is my simple game (if I can say that) http://pastebin.com/0qcVKgjW . I make it for 2-3 hours and i have some unsolved problems : 1. How can I spawn more flys then I tap this one? (I read ignatz book, but "balloon" example don't work for me. Maybe I'm dumb for programming) 2. Maybe there is some shorter way o make button on this fly ?(now I take roundrect and button classes from example projects) 3. Is there some elegant way to animate my sprites?

Ps. Sorry for my English . And wasting your time

Ignatz · August 2014

@lupino8211 - welcome. And you're not wasting our time. We like helping people like you. It's too late at night for me, but I'm sure you'll get help here.

Ignatz · August 2014

@lupino8211 - and don't be sorry for your English. I can't speak any of your language! Also, we come from all around the world.

As long as we can understand what you are saying, we can help you.

lupino8211 · August 2014

@Ignatz thank you. I'm very interested in making games, and you books are very helpful for me .

Jmv38 · August 2014

@lupino8211 difficult to make a detailed answer to your question. You could look at this code: it draws 300 butterfies, which are touch sensitive, and the drawing is efficient (if not 'elegant'). Managing many buttefies is done by creatin a 'butterfly' class. Maybe this example can help you?


--# Butterflies
Butterflies = class()

function Butterflies:init(n)
    self.colorList = {}

    self.colorList[1] = color(253, 255, 0, 255) 
    self.colorList[2] = color(255, 188, 0, 255) 
    self.colorList[3] = color(255, 75, 0, 255) 
    self.colorList[4] = color(255, 0, 157, 255) 
    self.colorList[5] = color(252, 0, 255, 255) 

    self.colorList[6] = color(138, 0, 255, 255) 
    self.colorList[7] = color(0, 159, 255, 255) 
    self.colorList[8] = color(0, 247, 255, 255) 
    self.colorList[9] = color(0, 255, 158, 255) 
    self.colorList[10] = color(41, 255, 0, 255) 

    self.n = n
    local id = {}
    local ms = mesh()
    print(ms)
    print(#ms.vertices)
    self.id = id
    self.ms = ms
    for i =1,n do
        local c = self.colorList [rnd(10)]
        local j = (i-1)*12
        id[i] = Butterfly(ms,c)
    end
end

function Butterflies:draw()
    self.ms:draw()
    for i,p in ipairs(self.id) do
        p:draw()
    end
end

function Butterflies:touched(touch)
    for i,p in ipairs(self.id) do
        p:touched(touch)
    end
end

--# Butterfly
Butterfly = class()

rnd = math.random
cos = math.cos
sin = math.sin
pi = math.pi

function Butterfly:init(ms,c)
    local x,y,z,w,h,o,r,j
    local xc,yc = WIDTH/2,HEIGHT/2
    local shape = {}
    x = (rnd()-0.5)*WIDTH*0.9 + xc
    y = (rnd()-0.5)*HEIGHT*0.9 + yc
    z = 0
    w = (rnd()+2)*4
    h = w
    o = 1  -- this is the opening of the wings
    r = rnd()*2*math.pi
    j = #ms.vertices
    ms:addRect(x,y,w,h,r)
    ms:addRect(x,y,w,h,r)
    self.ms = ms
    local p =self
    p.j, p.shape, p.r, p.c, p.w, p.h, p.o, p.x, p.y = j,shape,r,c,w,h,o,x,y
    p.beat, p.maxBeat = 0,1
    self:redraw()
end

function Butterfly:redraw()
    local p= self
    local j,shape,r,c0,w,h,o,x,y = p.j, p.shape, p.r, p.c, p.w, p.h, p.o, p.x, p.y
    local ms = self.ms
        shape[1]=vec2(0,0):rotate(r)
        shape[2]=vec2(w*o*1.3,h):rotate(r)
        shape[3]=vec2(w*o/2,-h):rotate(r)
        shape[4]=vec2(0,0):rotate(r)
        shape[5]=vec2(-w*o*1.3,h):rotate(r)
        shape[6]=vec2(-w*o/2,-h):rotate(r)
        c = color(0,0,0,128)
        local d,s
        if self.flying then d=10 s=1.1 else d=4 s=1 end
        for k=1,6 do 
            ms:vertex(j+k,shape[k]*s+vec2(x+d,y-d))
            ms:color(j+k,c) 
        end

        for k=1,6 do 
            ms:vertex(j+k+6,shape[k]*s+vec2(x,y)) 
            ms:color(j+k+6,c0) 
        end
end

function Butterfly:draw()
    local rnd = math.random

    if rnd(500)==1 then self:turn() end
    if rnd(500)==1 then self:wingBeat(rnd(20)+10) end
    if rnd(10000)==1 then self:fly("random") end
    self:wingBeat()
    if self.flying then self:fly() end
end

function Butterfly:wingBeat(n)
    local pap = self
    if n then -- this is a start
        pap.beat= n
        pap.maxBeat = n
     --   sound(SOUND_HIT, 39771)
    else -- continue beating
        if pap.beat ~=0 then
            local o = (1.5+ cos(pap.beat/pap.maxBeat*2*pi))/2.5
            pap.o = o
            self:redraw()
            pap.beat = pap.beat - 1
        end
    end
end

function Butterfly:turn()
    local pap = self
    local r = (rnd()-0.5)*pi/2
    pap.r = pap.r + r
    self:redraw()
end

function Butterfly:fly(type)
    local alpha 
    if type then
        self.flying = true
        self.flyType = type
        if self.flyType == "random" then  
            self.flySpeed = 1+rnd(1)
            alpha = self.r + pi/2
            self.flyDir = vec2(cos(alpha),sin(alpha))
        end
    else
        if self.beat==0 then self:wingBeat(rnd(10)+10) end
        if self.flyType == "random" then 
            if rnd(30)==1 then 
                self:turn() 
                alpha = self.r + pi/2
                self.flyDir = vec2(cos(alpha),sin(alpha))
            end
            if rnd(300)==1 then  self.flying=false end
        end
        if self.x <0     then self.x = self.x + WIDTH end
        if self.x >WIDTH then self.x = self.x - WIDTH end
        if self.y<0      then self.y = self.y + HEIGHT end
        if self.y>HEIGHT then self.y = self.y - HEIGHT end
        local dir,speed = self.flyDir,self.flySpeed
        self.x = self.x + dir.x * speed
        self.y = self.y + dir.y * speed
        self:redraw()
    end
end

function Butterfly:touched(touch)
    if vec2(touch.x,touch.y):dist(vec2(self.x,self.y))<40 then self:fly("random") end
end





--# Main
-- 0  papillon

displayMode(FULLSCREEN)

-- Use this function to perform your initial setup
function setup()
    print("Hello World!")
    papillons = Butterflies(300)
   -- fps=FPS()
end

-- This function gets called once every frame
function draw()
    -- This sets a dark background color 
    background(68, 68, 68, 255)

    papillons:draw()
--    fps:draw()
end
function touched(touch)
    papillons:touched(touch)
end

lupino8211 · August 2014

@Jvm38 thank you very much. Looks very useful for me. I'l have a look on this more careful

dave1707 · August 2014

@lupino8211 Here's a version of what I think you're after. It keeps track of your hits and misses. The score is (hits - misses) but doesn't go negative. The speed of the fly increases as your score increases. This doesn't use classes to keep it simple. Maybe this will help you some.


displayMode(FULLSCREEN)

function setup()
    fx=WIDTH/2
    fy=HEIGHT/2
    dx,dy=0,0
    x1,y1=0,0
    hit=0
    miss=0
    score=0
end

function draw()
    background(40, 40, 50)
    if math.random(2)==1 then
        sprite("Platformer Art:Battor Flap 1",fx,fy)
    else
        sprite("Platformer Art:Battor Flap 2",fx,fy)
    end

    x1=x1-1
    if x1<0 then
        dx=math.random(-1,1)*score  -- change fly x direction
        x1=20
    end

    y1=y1-1
    if y1<0 then
        dy=math.random(-1,1)*score  -- change fly y direction
        y1=20
    end

    fx=fx+dx    -- update fly position
    fy=fy+dy

    if fx>WIDTH then    -- check if fly is off screen
        fx=0
    end
    if fx<0 then
        fx=WIDTH
    end

    if fy>HEIGHT then   -- check if fly is off screen
        fy=0
    end
    if fy<0 then
        fy=HEIGHT
    end

    fontSize(20)    
    fill(255)
    text("Hits  "..hit,WIDTH/2,HEIGHT-50)
    text("Miss  "..miss,WIDTH/2,HEIGHT-100)

    fontSize(40)
    score=hit-miss
    if score<0 then
        score=0
    end
    text("Score  "..score,WIDTH/2,HEIGHT-150)
end

function touched(t)
    if t.state==BEGAN then
        v1=vec2(fx,fy)  -- center of fly
        d=v1:dist(vec2(t.x,t.y))    -- check touch distance to center of the fly
        if d<40 then
            hit=hit+1   -- fly was hit
            fx=math.random(50,WIDTH-50)
            fy=math.random(50,HEIGHT-50)
        else
            miss=miss+1 -- fly was missed
        end
    end
end

lupino8211 · August 2014

@dave1707 you make it very simple and more interesting, thanks . And I played for a 20 minutes in this game. Awesome

dave1707 · August 2014

@lupino8211 It doesn't take a lot of coding to do things with Codea. You just have to think ahead of time what you want to do and how it needs to be done. Unless you totally understand how someone else's classes work and what they're intended for, you can be pulling in a lot of code you don't need. Also, the more programs you write, the more you'll understand how to do thing easier. And the programs don't have to be big to learn.

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