Modify a text file: $/p2.txt

$/p2.txt

Methods (to "organize" & "modularize").
	scene():	sky, grass, hills, houses, etc.
	notes():	title, subtitle, signature, score, etc
	action():	creatures move around.  (Interact?)
(These are void functions with no args, for now), e.g.
in addition to setup(), draw(), mousePressed(), etc.

Variables (global declarations, for now).
"parameterization"
(Also:  system-defined variables, e.g. height, width, etc.)

Assignment statements.
	Expressions, operators

----

Projects 0 & 1 -- practice.  
	Draw shapes, fill, etc.
	Follow mouseX,Y

Project 2 [?] -- moving creatures 
Each has coordinates (x,y) and velocity (dx,dy) variables.
	hero (you make up the name!)
	monster[s] (whatever!)
	others (birds, etc.)
Respond to events, such as mouse click,

Movement w/o IF statements, e.g.

x=  x + (mouseX-x) / 2;
x=  x % width;
x=  constrain( ...
x= ... +  random( ...

-----

//// Today's lesson & demo:

// Click to set new gold location.
// Hero chases gold, dog chases hero, puppy chases dog.
// Monster heads for OLD position of hero.

// ?? It is dark (and monster cannot see hero), 
// except for flash oi light during gold placement.

void draw() {
  // Next frame.
  scene();
  notes();
  bird();
  monster();
  hero();
  dog();
  puppy();
}

void bird() {
  // Move & draw bird.
  fill(0,0,255);
  triangle( birdX,birdY, birdX-40,birdY-20, birdX-40,birdY+20 );
}

void hero() {
  // Move toward gold.
  heroX=  heroX  +  (goldX-heroX)/60;
  heroX=  heroY  +  (goldX-heroY)/60;
  // Draw hero
  fill( 255,255,0 );
  rect( heroX, heroY,  50, 80 );
  fill( 255,200,150 );
  ellipse( heroX, heroY-80/2-30/2,  30, 30 ); 
  // + eyes
  eyes();
}

// STUBS //  
void dog() { }
void puppy() { }
void monster() { }
void eyes() { }