Implemented camera and updated debug to work with camera

7 files changed, 143 insertions, 27 deletions

diff --git a/app/components/boid.rb b/app/components/boid.rb
index 060f9c3..3358559 100644
--- a/app/components/boid.rb
+++ b/app/components/boid.rb
@@ -1,5 +1,6 @@
 FF::Cmp.new('Boid',
-            x: 0, y: 0,
-            vx: 0, vy: 0,
-            cx: 0, cy: 0,
-            angle: 0)
+            x: 0, y: 0, # position
+            vx: 0, vy: 0, # velocity
+            cx: 0, cy: 0, # change in velocity
+            w: 0, h: 0, # width and height
+            angle: 0) # angle of velocity
diff --git a/app/components/camera.rb b/app/components/camera.rb
new file mode 100644
index 0000000..dc61bae
--- /dev/null
+++ b/app/components/camera.rb
@@ -0,0 +1,5 @@
+FF::Cmp.new('SingletonCamera',
+            :x, :y,
+            :zoom, :angle)
+
+FF::Cmp::SingletonCamera.new(x: 0.0, y: 0.0, zoom: 1.0, angle: 0.0)
diff --git a/app/main.rb b/app/main.rb
index 6b3abe6..00984e6 100644
--- a/app/main.rb
+++ b/app/main.rb
@@ -9,6 +9,7 @@ require 'app/components/rules/cohesion.rb'
 require 'app/components/rules/alignment.rb'
 require 'app/components/rules/separation.rb'
 require 'app/components/debug/debug_vector_arrow.rb'
+require 'app/components/camera.rb'
 
 require 'app/systems/render.rb'
 require 'app/systems/update_boid_sprite.rb'
@@ -19,5 +20,6 @@ require 'app/systems/rules/alignment.rb'
 require 'app/systems/rules/separation.rb'
 require 'app/systems/rules/reset_change_vector.rb'
 require 'app/systems/debug/debug_render_vector_arrow.rb'
+require 'app/systems/camera.rb'
 
 require 'app/tick.rb'
diff --git a/app/systems/camera.rb b/app/systems/camera.rb
new file mode 100644
index 0000000..db6e3fc
--- /dev/null
+++ b/app/systems/camera.rb
@@ -0,0 +1,29 @@
+FF::Scn::Render.add(
+  # Update the position of the sprite according
+  # to camera values before the sprite is rendered
+  FF::Sys.new('Camera', priority: 97) do
+    camera = FF::Cmp::SingletonCamera[0]
+    camera.entities.each do |ent|
+      sprite = ent.components[FF::Cmp::Sprite][0].props
+
+      angle = camera.angle * (Math::PI / 180)
+      half_width = $gtk.args.grid.w * 0.5
+      half_height = $gtk.args.grid.h * 0.5
+      offset_x = sprite[:x] + (sprite[:w] / 2)
+      offset_y = sprite[:y] + (sprite[:h] / 2)
+      temp_x = (((offset_x - camera.x) * Math.cos(angle)) - ((offset_y - camera.y) * Math.sin(angle))) \
+        * camera.zoom + half_width - (sprite[:w] * camera.zoom / 2)
+      temp_y = (((offset_x - camera.x) * Math.sin(angle)) + ((offset_y - camera.y) * Math.cos(angle))) \
+        * camera.zoom + half_height - (sprite[:h] * camera.zoom / 2)
+      temp_rotate = sprite[:angle] + camera.angle
+      temp_width = sprite[:w] * camera.zoom
+      temp_height = sprite[:h] * camera.zoom
+
+      sprite[:x] = temp_x
+      sprite[:y] = temp_y
+      sprite[:w] = temp_width
+      sprite[:h] = temp_height
+      sprite[:angle] = temp_rotate
+    end
+  end
+)
diff --git a/app/systems/debug/debug_render_vector_arrow.rb b/app/systems/debug/debug_render_vector_arrow.rb
index ebd7080..ae53d1c 100644
--- a/app/systems/debug/debug_render_vector_arrow.rb
+++ b/app/systems/debug/debug_render_vector_arrow.rb
@@ -1,35 +1,74 @@
 FF::Sys.new('DebugRenderVectorArrow', priority: 100) do
   FF::Cmp::DebugVectorArrow[0].entities.each do |entity|
     boid = entity.components[FF::Cmp::Boid][0]
+    sprite = entity.components[FF::Cmp::Sprite][0]
     length = FF::Cmp::DebugVectorArrow[0].length
     #puts "vx: #{boid.vx}"
     #puts "cx: #{boid.cx}"
-    vxtip = boid.x + (boid.vx * length)
-    vytip = boid.y + (boid.vy * length)
+    boid_x = 0
+    boid_y = 0
+    boid_cx = 0
+    boid_cy = 0
+    boid_vx = 0
+    boid_vy = 0
+    vxtip = 0
+    vytip = 0
+    small_square = 15
+    big_square = 25
+    if !entity.components[FF::Cmp::SingletonCamera].nil? && !entity.components[FF::Cmp::SingletonCamera][0].nil?
+      camera = FF::Cmp::SingletonCamera[0]
+      vxtip = boid_x = sprite.props[:x]
+      vytip = boid_y = sprite.props[:y]
+      boid_vx = boid.vx * camera.zoom
+      boid_vy = boid.vy * camera.zoom
+      vxtip += ((Math.cos(camera.angle * (Math::PI / 180.0)) * boid_vx) * length) - ((Math.sin(camera.angle * (Math::PI / 180.0)) * boid_vy) * length)
+      vytip += ((Math.sin(camera.angle * (Math::PI / 180.0)) * boid_vx) * length) + ((Math.cos(camera.angle * (Math::PI / 180.0)) * boid_vy) * length)
+      boid_cx = (((Math.cos(camera.angle * (Math::PI / 180.0)) * boid.cx)) - ((Math.sin(camera.angle * (Math::PI / 180.0)) * boid.cy))) * camera.zoom
+      boid_cy = (((Math.sin(camera.angle * (Math::PI / 180.0)) * boid.cx)) + ((Math.cos(camera.angle * (Math::PI / 180.0)) * boid.cy))) * camera.zoom
+      half_height = sprite.props[:h] * 0.5
+      half_width = sprite.props[:w] * 0.5
+      vxtip += half_width
+      vytip += half_height
+      #boid_cx += half_width
+      #boid_cy += half_height
+      boid_x += half_width
+      boid_y += half_height
+      boid_vx += half_width
+      boid_vy += half_height
+      small_square *= camera.zoom
+      big_square *= camera.zoom
+    else
+      vxtip = boid_x = boid.x
+      vytip = boid_y = boid.y
+      boid_cx = boid.cx
+      boid_cy = boid.cy
+      vxtip += (boid.vx * length)
+      vytip += (boid.vy * length)
+    end
 
     # Velocity
-    $gtk.args.outputs.lines << [boid.x, boid.y, vxtip, vytip, 0, 255, 255, 255]
-    $gtk.args.outputs.lines << [boid.x+1, boid.y, vxtip+1, vytip, 0, 255, 255, 255]
-    $gtk.args.outputs.lines << [boid.x-1, boid.y, vxtip-1, vytip, 0, 255, 255, 255]
-    $gtk.args.outputs.lines << [boid.x, boid.y+1, vxtip, vytip+1, 0, 255, 255, 255]
-    $gtk.args.outputs.lines << [boid.x, boid.y-1, vxtip, vytip-1, 0, 255, 255, 255]
+    $gtk.args.outputs.lines << [boid_x, boid_y, vxtip, vytip, 0, 255, 255, 255]
+    $gtk.args.outputs.lines << [boid_x+1, boid_y, vxtip+1, vytip, 0, 255, 255, 255]
+    $gtk.args.outputs.lines << [boid_x-1, boid_y, vxtip-1, vytip, 0, 255, 255, 255]
+    $gtk.args.outputs.lines << [boid_x, boid_y+1, vxtip, vytip+1, 0, 255, 255, 255]
+    $gtk.args.outputs.lines << [boid_x, boid_y-1, vxtip, vytip-1, 0, 255, 255, 255]
     #$gtk.args.outputs.lines << [boid.x, boid.y, boid.x + (boid.cx * length * 10), boid.y + (boid.cy * length), 0, 255, 0, 255]
 
     # Change in Velocity
-    $gtk.args.outputs.lines << [vxtip, vytip, vxtip + (boid.cx * length * 10), vytip + (boid.cy * length * 10), 255, 0, 255, 255]
-    $gtk.args.outputs.lines << [vxtip+1, vytip, vxtip+1 + (boid.cx * length * 10), vytip + (boid.cy * length * 10), 255, 0, 255, 255]
-    $gtk.args.outputs.lines << [vxtip-1, vytip, vxtip-1 + (boid.cx * length * 10), vytip + (boid.cy * length * 10), 255, 0, 255, 255]
-    $gtk.args.outputs.lines << [vxtip, vytip+1, vxtip + (boid.cx * length * 10), vytip+1 + (boid.cy * length * 10), 255, 0, 255, 255]
-    $gtk.args.outputs.lines << [vxtip, vytip-1, vxtip + (boid.cx * length * 10), vytip-1 + (boid.cy * length * 10), 255, 0, 255, 255]
+    $gtk.args.outputs.lines << [vxtip, vytip, vxtip + (boid_cx * length * 10), vytip + (boid_cy * length * 10), 255, 0, 255, 255]
+    $gtk.args.outputs.lines << [vxtip+1, vytip, vxtip+1 + (boid_cx * length * 10), vytip + (boid_cy * length * 10), 255, 0, 255, 255]
+    $gtk.args.outputs.lines << [vxtip-1, vytip, vxtip-1 + (boid_cx * length * 10), vytip + (boid_cy * length * 10), 255, 0, 255, 255]
+    $gtk.args.outputs.lines << [vxtip, vytip+1, vxtip + (boid_cx * length * 10), vytip+1 + (boid_cy * length * 10), 255, 0, 255, 255]
+    $gtk.args.outputs.lines << [vxtip, vytip-1, vxtip + (boid_cx * length * 10), vytip-1 + (boid_cy * length * 10), 255, 0, 255, 255]
 
     # Square Velocity
-    $gtk.args.outputs.borders << [vxtip - 24, vytip - 24, 48, 48, 0, 255, 255]
-    $gtk.args.outputs.borders << [vxtip - 25, vytip - 26, 52, 52, 0, 255, 255]
-    $gtk.args.outputs.borders << [vxtip - 25, vytip - 25, 50, 50, 0, 255, 255]
+    $gtk.args.outputs.borders << [vxtip - (big_square - 1), vytip - (big_square - 1), (big_square - 1) * 2, (big_square - 1) * 2, 0, 255, 255]
+    $gtk.args.outputs.borders << [vxtip - big_square, vytip - big_square, (big_square) * 2, (big_square) * 2, 0, 255, 255]
+    $gtk.args.outputs.borders << [vxtip - (big_square + 1), vytip - (big_square + 1), (big_square + 1) * 2, (big_square + 1) * 2, 0, 255, 255]
 
     # Square Change in Velocity
-    $gtk.args.outputs.borders << [vxtip - 14 + (boid.cx * length * 10), vytip - 14 + (boid.cy * length * 10), 28, 28, 255, 0, 255, 255]
-    $gtk.args.outputs.borders << [vxtip - 15 + (boid.cx * length * 10), vytip - 15 + (boid.cy * length * 10), 30, 30, 255, 0, 255, 255]
-    $gtk.args.outputs.borders << [vxtip - 16 + (boid.cx * length * 10), vytip - 16 + (boid.cy * length * 10), 32, 32, 255, 0, 255, 255]
+    $gtk.args.outputs.borders << [vxtip - (small_square - 1) + (boid_cx * length * 10), vytip - (small_square - 1) + (boid_cy * length * 10), (small_square - 1) * 2, (small_square - 1) * 2, 255, 0, 255, 255]
+    $gtk.args.outputs.borders << [vxtip - small_square + (boid_cx * length * 10), vytip - small_square + (boid_cy * length * 10), (small_square) * 2, (small_square) * 2, 255, 0, 255, 255]
+    $gtk.args.outputs.borders << [vxtip - (small_square + 1) + (boid_cx * length * 10), vytip - (small_square + 1) + (boid_cy * length * 10), (small_square + 1) * 2, (small_square + 1) * 2, 255, 0, 255, 255]
   end
 end
diff --git a/app/systems/update_boid_sprite.rb b/app/systems/update_boid_sprite.rb
index b89579d..4f7dc76 100644
--- a/app/systems/update_boid_sprite.rb
+++ b/app/systems/update_boid_sprite.rb
@@ -1,13 +1,17 @@
 FF::Scn::Render.add(
-  FF::Sys.new('UpdateBoidSprite', priority: 98) do
+  # Update the position of the boid sprite before
+  # the camera and before its rendered
+  FF::Sys.new('UpdateBoidSprite', priority: 95) do
     FF::Cmp::Boid.each do |boid|
       sprite = boid.entities[0].components[FF::Cmp::Sprite][0]
-      sprite.props[:x] = boid.x - sprite.props[:w] / 2
-      sprite.props[:y] = boid.y - sprite.props[:h] / 2
+      sprite.props[:x] = boid.x - boid.h / 2
+      sprite.props[:y] = boid.y - boid.w / 2
 
       diff_angle = (((Math.atan2(boid.vy, boid.vx) * 180.0) / Math::PI).round(3) - 90) - sprite.props[:angle]
       diff_angle = (diff_angle + 180) % 360 - 180
       sprite.props[:angle] += diff_angle
+      sprite.props[:w] = boid.w
+      sprite.props[:h] = boid.h
     end
   end
 )
diff --git a/app/tick.rb b/app/tick.rb
index 7539405..de40a9a 100644
--- a/app/tick.rb
+++ b/app/tick.rb
@@ -11,13 +11,14 @@ position_range = (100..700).to_a
   sprite = FF::Cmp::Sprite.new
   sprite.props[:path] = 'sprites/kenny/Ships/ship_0011.png'
   FF::Ent.new(
-    FF::Cmp::Boid.new(x: position_range.sample, y: position_range.sample, vx: 25, vy: 25),
+    FF::Cmp::Boid.new(x: position_range.sample, y: position_range.sample, vx: 25, vy: 25, w: sprite.props[:w], h: sprite.props[:h]),
     sprite,
     FF::Cmp::BoidBounds.new(strength: 1),
     FF::Cmp::BoidsAlignment.new(strength: 1),
     FF::Cmp::BoidsSeparation.new(distance: 150, strength: 0.01),
     FF::Cmp::BoidsCohesion.new(strength: 100),
-    #debug_arrow,
+    FF::Cmp::SingletonCamera[0],
+    debug_arrow,
   )
 end
 #FF::Ent.new(
@@ -32,9 +33,44 @@ end
 FF::Scn::Debug.add(FF::Sys::DebugRenderVectorArrow)
 @pause = true
 FF::Stg.remove FF::Scn::BoidRules
+@camera = FF::Cmp::SingletonCamera[0]
 def tick args
   args.outputs.background_color = [0,0,0]
   FelFlame::Stage.call
+
+  # Moving Camera
+  if args.inputs.keyboard.keys[:down_or_held].include?(:d)
+    @camera.x += (Math.cos([email protected] * (Math::PI / 180.0)) * 5)
+    @camera.y += (Math.sin([email protected] * (Math::PI / 180.0)) * 5)
+  end
+  if args.inputs.keyboard.keys[:down_or_held].include?(:a)
+    @camera.x += (Math.cos([email protected] * (Math::PI / 180.0)) * -5)
+    @camera.y += (Math.sin([email protected] * (Math::PI / 180.0)) * -5)
+  end
+  if args.inputs.keyboard.keys[:down_or_held].include?(:w)
+    #@camera.y += 5
+    @camera.x -= (Math.sin([email protected] * (Math::PI / 180.0)) * 5)
+    @camera.y += (Math.cos([email protected] * (Math::PI / 180.0)) * 5)
+  end
+  if args.inputs.keyboard.keys[:down_or_held].include?(:s)
+    #@camera.y -= 5
+    @camera.x -= (Math.sin([email protected] * (Math::PI / 180.0)) * -5)
+    @camera.y += (Math.cos([email protected] * (Math::PI / 180.0)) * -5)
+  end
+  if args.inputs.keyboard.keys[:down_or_held].include?(:q)
+    @camera.angle += 3
+  end
+  if args.inputs.keyboard.keys[:down_or_held].include?(:e)
+    @camera.angle -= 3
+  end
+  if args.inputs.keyboard.keys[:down_or_held].include?(:z)
+    @camera.zoom *= 1.05
+  end
+  if args.inputs.keyboard.keys[:down_or_held].include?(:x)
+    @camera.zoom *= 0.95
+  end
+
+  # Pausing
   if args.inputs.keyboard.keys[:down].include?(:right)
     FF::Scn::BoidRules.call
   end