Difference between revisions of "Gamecamp"

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Line 6: Line 6:
  
 
* kein int, alles float
 
* kein int, alles float
−
* multiple return
+
* local a,b,c = MyFun()  -- multiple return values
 
* todo : unpack
 
* todo : unpack
 
*  
 
*  
 
* for i=1,10 do ... end
 
* for i=1,10 do ... end
 +
* for i=1,10,2 do ... end      -- -> 1 3 5 7 9
 
* if (cond) then ... elseif (cond) then ... else ... end
 
* if (cond) then ... elseif (cond) then ... else ... end
 +
* while (cond) do ... end
 +
* kein continue aber break geht
 
* for k,v in pairs(mytable) do ... end
 
* for k,v in pairs(mytable) do ... end
 
* for k,v in ipairs(mytable) do ... end
 
* for k,v in ipairs(mytable) do ... end
 
* function bla:blub () ... end  :  TODO : implizites self
 
* function bla:blub () ... end  :  TODO : implizites self
 +
* print(var1,var2,var3)    alle ausgeben
 +
* comments :  -- single line    --[[....]]  multiline/block
 +
* oop über metatables modellierbar
 +
* funktionen sind 1.class variablen (implizite closure) MyFunction(1, function (a,b) return a+b end )   
 +
* local a,b,c -- sonst global
 +
* stringcat : "hello" .. " " .. "world"
  
 +
=== lua tables ===
  
−
=== tables ===
+
* arrays : starten bei index 1
−
 
 
 
* arrays : table.insert(mytable,o)
 
* arrays : table.insert(mytable,o)
 
* assoc/map : mytable[name] = value
 
* assoc/map : mytable[name] = value
Line 24: Line 33:
 
* löschen = assign nil
 
* löschen = assign nil
  
 +
=== utils ===
 +
 +
* for line in io.lines(filepath) do ... print(line) ... end
 +
* print(debug.traceback("nachricht"))
 +
* assert(wert_der_true_sein_soll,nachricht)
 +
* dofile(filepath)  -- TODO : unter löve anders zwecks zip ?
 +
* for a,b,c in string.gmatch(txt,"(%w+)=(%w+):(%w+)") do print(a,b,c) end -- z.b. map-daten laden..
 +
* local startpos,endpos,match1,match2,match3 = string.find(txt,"(%w+)=(%w+):(%w+)")
 +
* table.sort(arr,function (a,b) return a.feld < b.feld end)
 +
* math.max/min/floor/ceil/pi/atan2/
 +
* math.randomseed(os.time()) -- am anfang einmal aufrufen
 +
* math.random() -- [0;1[  float zwischen 0 und 1
 +
* math.random(n) -- n=int -> returns int in range [1;n] 
 +
* math.random(n,m) -- n,m=int -> returns int in range [n;m] 
 +
 +
== löve 0.6.2 ==
 +
* features
 +
** audio (mitlerweile ganz gut)
 +
** 2d gfx
 +
** particle system
 +
** input
 +
** box2 physic (etwas wackelig)
 +
 +
* hello world
 +
function love.draw()
 +
    love.graphics.print('Hello World!', 400, 300)
 +
end
 +
 +
* anekdoten
 +
** ö
 +
** forum: öbey
 +
** seltsame libnamen: AnAL (Animation), LUBE (Network), Pölygamy (State, Helpers), Swingers (gesture)
 +
 +
* binary für win,mac,linux
 +
* game als zip (.love) in einem file
 +
* man kann standalone exe bauen (binary + zip dran-ge-cat'ed)
 +
* todo : keypressed/keyisdown
 +
* todo : time/milliseconds
 +
* todo : particle system beispiel? nicht nötig falls zeit knapp
  
 
== game ==
 
== game ==
Line 35: Line 83:
 
* interaktive : program new enemies
 
* interaktive : program new enemies
 
* object system with stepper (createclass? :syntax?)
 
* object system with stepper (createclass? :syntax?)
 +
* löve particle fx
 +
 +
== code ==
 +
=== sprite malen ===
 +
object = love.graphics.newImage("ball.png")
 +
love.graphics.draw(object, 10, 10)
 +
 +
=== ton abspielen ===
 +
sound = love.audio.newSource("pling.wav", "static")
 +
music = love.audio.newSource("techno.ogg") -- streamed
 +
love.audio.play(sound)
 +
love.audio.play(music)
 +
 +
=== text ausgeben ===
 +
love.graphics.setFont("AwesomeFont.ttf", 15)
 +
love.graphics.print("This is some awesome text", 100, 100)
 +
 +
=== input handling ===
 +
if love.keyboard.isDown( " " ) then print("space pressed") end
 +
 +
function love.keypressed(  key, unicode )
 +
  if key == "return" then
 +
      text = "RETURN is being pressed!"
 +
  end
 +
end
 +
 +
mouse_x = love.mouse.getX()
 +
mouse_y = love.mouse.getY()
 +
if love.mouse.isDown("r") then text = "Mouse button right is pressed" end
  
 
== collab edit test, didn't work out though ==
 
== collab edit test, didn't work out though ==

Revision as of 12:23, 23 May 2010

http://www.gamecampmunich.de/


lua intro

  • kein int, alles float
  • local a,b,c = MyFun() -- multiple return values
  • todo : unpack
  • for i=1,10 do ... end
  • for i=1,10,2 do ... end -- -> 1 3 5 7 9
  • if (cond) then ... elseif (cond) then ... else ... end
  • while (cond) do ... end
  • kein continue aber break geht
  • for k,v in pairs(mytable) do ... end
  • for k,v in ipairs(mytable) do ... end
  • function bla:blub () ... end  : TODO : implizites self
  • print(var1,var2,var3) alle ausgeben
  • comments : -- single line --.... multiline/block
  • oop über metatables modellierbar
  • funktionen sind 1.class variablen (implizite closure) MyFunction(1, function (a,b) return a+b end )
  • local a,b,c -- sonst global
  • stringcat : "hello" .. " " .. "world"

lua tables

  • arrays : starten bei index 1
  • arrays : table.insert(mytable,o)
  • assoc/map : mytable[name] = value
  • set : mytable[o] = true
  • key und value any
  • löschen = assign nil

utils

  • for line in io.lines(filepath) do ... print(line) ... end
  • print(debug.traceback("nachricht"))
  • assert(wert_der_true_sein_soll,nachricht)
  • dofile(filepath) -- TODO : unter löve anders zwecks zip ?
  • for a,b,c in string.gmatch(txt,"(%w+)=(%w+):(%w+)") do print(a,b,c) end -- z.b. map-daten laden..
  • local startpos,endpos,match1,match2,match3 = string.find(txt,"(%w+)=(%w+):(%w+)")
  • table.sort(arr,function (a,b) return a.feld < b.feld end)
  • math.max/min/floor/ceil/pi/atan2/
  • math.randomseed(os.time()) -- am anfang einmal aufrufen
  • math.random() -- [0;1[ float zwischen 0 und 1
  • math.random(n) -- n=int -> returns int in range [1;n]
  • math.random(n,m) -- n,m=int -> returns int in range [n;m]

löve 0.6.2

  • features
    • audio (mitlerweile ganz gut)
    • 2d gfx
    • particle system
    • input
    • box2 physic (etwas wackelig)
  • hello world

function love.draw() 

   love.graphics.print('Hello World!', 400, 300)

end

  • anekdoten
    • ö
    • forum: öbey
    • seltsame libnamen: AnAL (Animation), LUBE (Network), Pölygamy (State, Helpers), Swingers (gesture)
  • binary für win,mac,linux
  • game als zip (.love) in einem file
  • man kann standalone exe bauen (binary + zip dran-ge-cat'ed)
  • todo : keypressed/keyisdown
  • todo : time/milliseconds
  • todo : particle system beispiel? nicht nötig falls zeit knapp

game

  • sidescroller
  • tyrian gfx pack von lostgarden
  • states (menu,game,highscore)
  • map (texteditor, vertical)
  • enemies,deco,shots spawn from right (map) and despawn
  • parallax background / stars
  • interaktive : program new enemies
  • object system with stepper (createclass? :syntax?)
  • löve particle fx

code

sprite malen

object = love.graphics.newImage("ball.png") love.graphics.draw(object, 10, 10)

ton abspielen

sound = love.audio.newSource("pling.wav", "static") music = love.audio.newSource("techno.ogg") -- streamed love.audio.play(sound) love.audio.play(music)

text ausgeben

love.graphics.setFont("AwesomeFont.ttf", 15) love.graphics.print("This is some awesome text", 100, 100)

input handling

if love.keyboard.isDown( " " ) then print("space pressed") end

function love.keypressed( key, unicode ) 

  if key == "return" then
     text = "RETURN is being pressed!"
  end

end

mouse_x = love.mouse.getX() mouse_y = love.mouse.getY() if love.mouse.isDown("r") then text = "Mouse button right is pressed" end

collab edit test, didn't work out though

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