/**
  A few example programs using texit. Just run `dub build` with one of the follwing versions to see them
  $(LIST
    * HelloWorld
    * RandomCharacters
    * ScrollingZooming
    * AudioExample
  )
*/
module texit.app;

import texit;

version = ImageExample;

version(HelloWorld) {
  // Texit will automatically add a main to your program
  //           charmap file,         char size,  scale, world width, world height, screen width, screen height, title
  mixin Texit!("qbicfeet_10x10.png",  10,        2,     64,          32,           64,           32,            "Hello World");

  void setup() {
    // create a new "event", events have a start and end time both in seconds.
    // TextEvent draws text to the screen at the start and removes it at the end
    // using infinity here tells it to never disappear
    //                  start, end,            location,    string
    queue(new TextEvent(0,     float.infinity, Point(0, 0), "Hello, World!"));
  }
}

version(RandomCharacters) {
  mixin Texit!("qbicfeet_10x10.png", 10, 2, 64, 32, 64, 32, "Random Characters");

  void setup() {
    import std.random;
    float[3] randColor() {
      return [uniform01, uniform01, uniform01];
    }
    // loop over all characters in the world
    for(int i = 0; i < WORLD_WIDTH; i++) {
      for(int j = 0; j < WORLD_HEIGHT; j++) {
        // add a textevent for each of them
        float start = uniform01*2;
        float end = start+2+uniform01*2;
        // textevent has another constructor, allowing you to specify foreground and background colors
        // colors are represented as a float[3]
        // these text events have a non-infinity end time, so they'll disappear a bit after they appear
        queue(new TextEvent(start, end, Point(i, j), randColor, randColor, ""~cast(char)uniform(0, 255)));
      }
    }
  }
}

version(ScrollingZooming) {
  mixin Texit!("qbicfeet_10x10.png", 10, 2, 128, 64, 64, 32, "Scrolling & Zooming");

  void setup() {
    import std.random;
    // colors are represented by float[3]
    float[3] randColor() {
      return [uniform01, uniform01, uniform01];
    }
    // random string the size of WORLD_WIDTH
    string randString() {
      string s = "";
      for(int i = 0; i < WORLD_WIDTH; i++) {
        char c = cast(char)uniform(0, 255);
        s ~= c == '\n' ? ' ' : c;
      }
      return s;
    }
    Vector start = Vector(0, 0); 
    translation = start; // set initial translation without an event
    // create rows
    for(int i = 0; i < WORLD_HEIGHT; i++)
      queue(new TextEvent(0, float.infinity, Point(0, i), randColor, randColor, randString));
    // start translating & zooming at time 1
    queue(new TranslationEvent(1, 10, start, Vector(WIDTH*1.5, HEIGHT*1.5, 0), easing!"easeOutBack"));
    queue(new ZoomEvent(1, 10, 1, 4, easing!"easeInOutCubic"));
  }
}

version(AudioExample) {
  mixin Texit!("qbicfeet_10x10.png", 10, 2, 128, 64, 64, 32, "Audio Example");

  float beat(float v) {
    enum ms = 60f/140f; // song is at 140bpm
    return v*ms;
  }

  void setup() {
    import std.random;
    float[3] randColor() {
      return [uniform01, uniform01, uniform01];
    }
    offset = 0; // set offset /before/ you play the audio (here it's 0 so it doesn't matter but important to remember)
    audio("hello_world.ogg");
    string s = "Hello, World!";
    for(int i = 0; i < WORLD_WIDTH/s.length; i++) {
      for(int j = 0; j < WORLD_HEIGHT; j++) {
        queue(new FlashingTextEvent(uniform(0, 24).beat, float.infinity, Point(i*cast(int)s.length, j), randColor, randColor, randColor, randColor, s, 4.beat));
      }
    }
    for(int i = 0; i < 50; i++) {
      float a = (i*16).beat;
      float b = a+(8.beat);
      float c = b+(8.beat);
      queue(new TranslationEvent(a, b, Vector(0, WORLD_HEIGHT/2), Vector(WORLD_WIDTH, WORLD_HEIGHT/2), easing!"easeInOutBack"));
      queue(new TranslationEvent(b, c, Vector(WORLD_WIDTH, WORLD_HEIGHT/2), Vector(0, WORLD_HEIGHT/2), easing!"easeInOutBack"));
      queue(new ZoomEvent(a, b, 2, 4, easing!"easeInBack"));
      queue(new ZoomEvent(b, c, 4, 2, easing!"easeOutBack"));
    }
  }
}

version(ImageExample) {
  mixin Texit!("qbicfeet_10x10.png", 10, 2, 64, 32, 64, 32, "Image Example");

  void setup() {

  }
}