tested examples

Author: monkstone

examples/bumpy_surface_noise.rb

@@ -37,5 +37,5 @@ def draw
   particles.reject!(&:done)
   # Just drawing the framerate to see how many particles it can handle
   fill(0)
-  text("framerate: #{frame_rate.to_i}", 12, 16)
+  text(format('framerate: %d', frame_rate), 12, 16)
 end

examples/lib/boundary.rb

@@ -2,7 +2,7 @@
 class Boundary
   extend Forwardable
   def_delegators(:@app, :fill, :stroke, :rect, :rect_mode, :box2d)
-  attr_reader :pos, :size, :b
+  attr_reader :pos, :size, :b, :x, :y, :w, :h
   def initialize(app, x, y, w, h)
     @app, @x, @y, @w, @h = app, x, y, w, h
     sd = PolygonShape.new

examples/lib/custom_shape.rb

@@ -4,9 +4,9 @@ class CustomShape
   attr_reader :body, :box2d
 
   # Constructor
-  def initialize(b2d, x, y)
+  def initialize(app, x, y)
     # Add the box to the box2d world
-    @box2d = b2d
+    @box2d = app.box2d
     make_body(Vec2.new(x, y))
   end
 

examples/polygons.rb

@@ -1,6 +1,7 @@
 # Basic example of falling rectangles
 require 'pbox2d'
 require_relative 'lib/custom_shape'
+require_relative 'lib/boundary'
 
 attr_reader :box2d, :boundaries, :polygons
 
@@ -16,10 +17,10 @@ def setup
   # Create Arrays
   @polygons = []
   @boundaries = [
-    Boundary.new(self, width / 4, height - 5, width / 2 - 50, 10, 0),
-    Boundary.new(self, 3 * width / 4, height - 50, width / 2 - 50, 10, 0),
-    Boundary.new(self, width - 5, height / 2, 10, height, 0),
-    Boundary.new(self, 5, height / 2, 10, height, 0)
+    Boundary.new(self, width / 4, height - 5, width / 2 - 50, 10),
+    Boundary.new(self, 3 * width / 4, height - 50, width / 2 - 50, 10),
+    Boundary.new(self, width - 5, height / 2, 10, height),
+    Boundary.new(self, 5, height / 2, 10, height)
   ]
 end
 

examples/revolute_joint/revolute_joint.rb

@@ -29,7 +29,7 @@ def draw
   system.run
   # Draw the windmill
   windmill.display
-  status = windmill.motor_on? ? "ON" : "OFF"
+  status = windmill.motor_on? ? 'ON' : 'OFF'
   fill(0)
   text(format("Click mouse to toggle motor.\nMotor: %s", status), 10, height - 30)
 end

examples/test_contact/lib/particle.rb

@@ -2,7 +2,7 @@
 # when two particles collide (no change just hitting boundary)
 class Particle
   extend Forwardable
-  def_delegators(:@app, :box2d, :begin_shape, :end_shape, :line, :pop_matrix,
+  def_delegators(:@app, :box2d, :begin_shape, :color, :end_shape, :line, :pop_matrix,
                  :ellipse, :translate, :rotate, :stroke, :push_matrix,
                  :fill, :no_fill, :stroke_weight)
   attr_accessor :body
@@ -12,7 +12,7 @@ def initialize(app, x, y, r)
     @app, @x, @y, @radius = app, x, y, r
     # This function puts the particle in the Box2d world
     make_body(x, y, radius)
-    @col = -5_263_441 # grey
+    @col = color('#c0c0c0') # silver
     body.setUserData(self)
   end
 
@@ -23,7 +23,7 @@ def kill_body
 
   # Change color when hit
   def change
-    @col = -65_536 # red
+    @col = color('#cc0000') # red
   end
 
   # Is the particle ready for deletion?

examples/test_contact/test_contact.rb

@@ -16,8 +16,7 @@ def setup
 end
 
 def draw
-  col = color('#ffffff')
-  background(col)
+  background(color('#ffffff'))
   particles << Particle.new(self, rand(width), 20, rand(4..8)) if rand < 0.1
   particles.each(&:display)
   particles.reject!(&:done)