Get rvx bundle exec rake release functional...

.gitignore

@@ -1,3 +1,4 @@
+/.idea
 /.bundle/
 /.yardoc
 /_yardoc/

Gemfile.lock

@@ -1,25 +1,37 @@
 PATH
   remote: .
   specs:
-    cyberarm_engine (0.24.5)
+    cyberarm_engine (0.30.0)
       gosu (~> 1.1)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    gosu (1.4.6)
-    minitest (5.25.5)
-    rake (13.2.1)
+    ffi (1.17.4-x86_64-linux-gnu)
+    ffi (1.17.4-x86_64-linux-musl)
+    gosu (1.5.0-x86_64-linux)
+      ffi (~> 1.12)
+    minitest (5.27.0)
+    rake (13.4.2)
 
 PLATFORMS
-  x64-mingw-ucrt
-  x86_64-linux
+  x86_64-linux-gnu
+  x86_64-linux-musl
 
 DEPENDENCIES
-  bundler (~> 2.2)
+  bundler (~> 4)
   cyberarm_engine!
   minitest (~> 5.0)
   rake (~> 13.0)
 
+CHECKSUMS
+  bundler (4.1.0.beta1) sha256=8a2dac8ca276ff4eff5efc2c6457b0044080fc1e431534ad7c5cc6187232b800
+  cyberarm_engine (0.30.0)
+  ffi (1.17.4-x86_64-linux-gnu) sha256=9d3db14c2eae074b382fa9c083fe95aec6e0a1451da249eab096c34002bc752d
+  ffi (1.17.4-x86_64-linux-musl) sha256=3fdf9888483de005f8ef8d1cf2d3b20d86626af206cbf780f6a6a12439a9c49e
+  gosu (1.5.0-x86_64-linux)
+  minitest (5.27.0) sha256=2d3b17f8a36fe7801c1adcffdbc38233b938eb0b4966e97a6739055a45fa77d5
+  rake (13.4.2) sha256=cb825b2bd5f1f8e91ca37bddb4b9aaf345551b4731da62949be002fa89283701
+
 BUNDLED WITH
-   2.6.8
+  4.1.0.beta1

cyberarm_engine.gemspec

@@ -28,9 +28,8 @@ Gem::Specification.new do |spec|
   spec.require_paths = %w[lib assets]
 
   spec.add_dependency "gosu", "~> 1.1"
-  # spec.add_dependency "ffi", :platforms => [:mswin, :mingw] # Required by Clipboard on Windows
 
-  spec.add_development_dependency "bundler", "~> 2.2"
+  spec.add_development_dependency "bundler", "~> 4"
   spec.add_development_dependency "minitest", "~> 5.0"
   spec.add_development_dependency "rake", "~> 13.0"
 end

lib/cyberarm_engine.rb

@@ -42,6 +42,13 @@ require_relative "cyberarm_engine/console/command"
 require_relative "cyberarm_engine/console/subcommand"
 require_relative "cyberarm_engine/console/commands/help_command"
 
+require_relative "cyberarm_engine/pathfinding/graph"
+require_relative "cyberarm_engine/pathfinding/graphs/grid"
+require_relative "cyberarm_engine/pathfinding/graph_search"
+require_relative "cyberarm_engine/pathfinding/graph_searches/breadth_first_search"
+require_relative "cyberarm_engine/pathfinding/graph_searches/dijkstra_search"
+require_relative "cyberarm_engine/pathfinding/graph_searches/astar_search"
+
 require_relative "cyberarm_engine/ui/dsl"
 
 require_relative "cyberarm_engine/ui/theme"

lib/cyberarm_engine/background_nine_slice.rb

@@ -4,10 +4,10 @@ module CyberarmEngine
 
     CACHE = {}
 
-    attr_accessor :x, :y, :z, :width, :height, :mode, :color
+    attr_accessor :x, :y, :z, :width, :height, :mode, :color, :render_mode
     attr_reader :image, :left, :top, :right, :bottom
 
-    def initialize(image_path: nil, x: 0, y: 0, z: 0, width: 0, height: 0, mode: :tiled, left: 1, top: 1, right: 1, bottom: 1, color: Gosu::Color::WHITE)
+    def initialize(image_path: nil, x: 0, y: 0, z: 0, width: 0, height: 0, mode: :tiled, left: 1, top: 1, right: 1, bottom: 1, color: Gosu::Color::WHITE, render_mode: :default)
       @image = get_image(image_path) if image_path
 
       @x = x
@@ -25,6 +25,7 @@ module CyberarmEngine
       @bottom = bottom
 
       @color = color
+      @render_mode = render_mode
 
       nine_slice if @image
     end
@@ -121,58 +122,58 @@ module CyberarmEngine
     end
 
     def draw_stretched
-      @segment_top_left.draw(@x, @y, @z, 1, 1, @color)
-      @segment_top.draw(@x + @segment_top_left.width, @y, @z, width_scale, 1, @color) # SCALE X
-      @segment_top_right.draw((@x + @width) - @segment_top_right.width, @y, @z, 1, 1, @color)
+      @segment_top_left.draw(@x, @y, @z, 1, 1, @color, @render_mode)
+      @segment_top.draw(@x + @segment_top_left.width, @y, @z, width_scale, 1, @color, @render_mode) # SCALE X
+      @segment_top_right.draw((@x + @width) - @segment_top_right.width, @y, @z, 1, 1, @color, @render_mode)
 
-      @segment_right.draw((@x + @width) - @segment_right.width, @y + @top, @z, 1, height_scale, @color) # SCALE Y
-      @segment_bottom_right.draw((@x + @width) - @segment_bottom_right.width, @y + @height - @segment_bottom_right.height, @z, 1, 1, @color)
-      @segment_bottom.draw(@x + @segment_bottom_left.width, (@y + @height) - @segment_bottom.height, @z, width_scale, 1, @color) # SCALE X
-      @segment_bottom_left.draw(@x, (@y + @height) - @segment_bottom_left.height, @z, 1, 1, @color)
-      @segment_left.draw(@x, @y + @top, @z, 1, height_scale, @color) # SCALE Y
+      @segment_right.draw((@x + @width) - @segment_right.width, @y + @top, @z, 1, height_scale, @color, @render_mode) # SCALE Y
+      @segment_bottom_right.draw((@x + @width) - @segment_bottom_right.width, @y + @height - @segment_bottom_right.height, @z, 1, 1, @color, @render_mode)
+      @segment_bottom.draw(@x + @segment_bottom_left.width, (@y + @height) - @segment_bottom.height, @z, width_scale, 1, @color, @render_mode) # SCALE X
+      @segment_bottom_left.draw(@x, (@y + @height) - @segment_bottom_left.height, @z, 1, 1, @color, @render_mode)
+      @segment_left.draw(@x, @y + @top, @z, 1, height_scale, @color, @render_mode) # SCALE Y
 
-      @segment_middle.draw(@x + @segment_top_left.width, @y + @segment_top.height, @z, width_scale, height_scale, @color) # SCALE X and SCALE Y
+      @segment_middle.draw(@x + @segment_top_left.width, @y + @segment_top.height, @z, width_scale, height_scale, @color, @render_mode) # SCALE X and SCALE Y
     end
 
     def draw_tiled
-      @segment_top_left.draw(@x, @y, @z, 1, 1, @color)
+      @segment_top_left.draw(@x, @y, @z, 1, 1, @color, @render_mode)
 
       # p [width_scale, height_scale]
 
       Gosu.clip_to(@x + @segment_top_left.width, @y, @segment_top.width * width_scale, @segment_top.height) do
         width_scale.ceil.times do |i|
-          @segment_top.draw(@x + @segment_top_left.width + (@segment_top.width * i), @y, @z, 1, 1, @color) # SCALE X
+          @segment_top.draw(@x + @segment_top_left.width + (@segment_top.width * i), @y, @z, 1, 1, @color, @render_mode) # SCALE X
         end
       end
 
-      @segment_top_right.draw((@x + @width) - @segment_top_right.width, @y, @z, 1, 1, @color)
+      @segment_top_right.draw((@x + @width) - @segment_top_right.width, @y, @z, 1, 1, @color, @render_mode)
 
       Gosu.clip_to(@x + @width - @segment_top_right.width, @y + @top, @segment_right.width, @segment_right.height * height_scale) do
         height_scale.ceil.times do |i|
-          @segment_right.draw((@x + @width) - @segment_right.width, @y + @top + (@segment_right.height * i), @z, 1, 1, @color) # SCALE Y
+          @segment_right.draw((@x + @width) - @segment_right.width, @y + @top + (@segment_right.height * i), @z, 1, 1, @color, @render_mode) # SCALE Y
         end
       end
 
-      @segment_bottom_right.draw((@x + @width) - @segment_bottom_right.width, @y + @height - @segment_bottom_right.height, @z, 1, 1, @color)
+      @segment_bottom_right.draw((@x + @width) - @segment_bottom_right.width, @y + @height - @segment_bottom_right.height, @z, 1, 1, @color, @render_mode)
 
       Gosu.clip_to(@x + @segment_top_left.width, @y + @height - @segment_bottom.height, @segment_top.width * width_scale, @segment_bottom.height) do
         width_scale.ceil.times do |i|
-          @segment_bottom.draw(@x + @segment_bottom_left.width + (@segment_bottom.width * i), (@y + @height) - @segment_bottom.height, @z, 1, 1, @color) # SCALE X
+          @segment_bottom.draw(@x + @segment_bottom_left.width + (@segment_bottom.width * i), (@y + @height) - @segment_bottom.height, @z, 1, 1, @color, @render_mode) # SCALE X
         end
       end
 
-      @segment_bottom_left.draw(@x, (@y + @height) - @segment_bottom_left.height, @z, 1, 1, @color)
+      @segment_bottom_left.draw(@x, (@y + @height) - @segment_bottom_left.height, @z, 1, 1, @color, @render_mode)
 
       Gosu.clip_to(@x, @y + @top, @segment_left.width, @segment_left.height * height_scale) do
         height_scale.ceil.times do |i|
-          @segment_left.draw(@x, @y + @top + (@segment_left.height * i), @z, 1, 1, @color) # SCALE Y
+          @segment_left.draw(@x, @y + @top + (@segment_left.height * i), @z, 1, 1, @color, @render_mode) # SCALE Y
         end
       end
 
       Gosu.clip_to(@x + @segment_top_left.width, @y + @segment_top.height, @width - (@segment_left.width + @segment_right.width), @height - (@segment_top.height + @segment_bottom.height)) do
         height_scale.ceil.times do |y|
           width_scale.ceil.times do |x|
-            @segment_middle.draw(@x + @segment_top_left.width + (@segment_middle.width * x), @y + @segment_top.height + (@segment_middle.height * y), @z, 1, 1, @color) # SCALE X and SCALE Y
+            @segment_middle.draw(@x + @segment_top_left.width + (@segment_middle.width * x), @y + @segment_top.height + (@segment_middle.height * y), @z, 1, 1, @color, @render_mode) # SCALE X and SCALE Y
           end
         end
       end

lib/cyberarm_engine/common.rb

@@ -1,4 +1,6 @@
 module CyberarmEngine
+  GUI_DEBUG = false
+
   module Common
     ImageBlob = Data.define(:to_blob, :columns, :rows)
 

lib/cyberarm_engine/game_state.rb

@@ -33,6 +33,9 @@ module CyberarmEngine
       @timers.delete_if(&:dead?)
     end
 
+    def fixed_update(dt)
+    end
+
     def needs_redraw?
       true
     end

lib/cyberarm_engine/pathfinding/graph.rb

@@ -0,0 +1,64 @@
+module CyberarmEngine
+  module Pathfinding
+    class Graph
+      class Node
+        KEY_FORMAT = "%s:%s:%s".freeze
+
+        attr_reader :x, :y, :z, :cost, :key, :edge_nodes
+
+        def initialize(x:, y:, z: 0, cost: 0)
+          @x = x
+          @y = y
+          @z = z
+          @cost = cost
+
+          @key = format(KEY_FORMAT, @x, @y, @z).freeze
+
+          @edge_nodes = []
+        end
+
+        def add_edge_node(node)
+          index = @edge_nodes.find_index { |n| n.key == node.key }
+
+          return if index
+
+          @edge_nodes.push(node)
+        end
+
+        def remove_edge_node(node)
+          index = @edge_nodes.find_index { |n| n.key == node.key }
+
+          return unless index
+
+          @edge_nodes.delete(index)
+        end
+
+        def inspect
+          format "#<%<class>s:%<id>#018x @key=%<key>s @cost=%<cost>s @edge_nodes=%<edge_nodes>s>",
+                 class: self.class,
+                 id: object_id << 1,
+                 key: key.inspect,
+                 cost: cost.inspect,
+                 edge_nodes: edge_nodes.map { |n| n&.key }
+        end
+      end
+
+      def initialize(nodes: {})
+        @nodes = nodes
+      end
+
+      def node(key)
+        @nodes[key]
+      end
+
+      def node_at(x, y, z = 0)
+        key = format(Node::KEY_FORMAT, x, y, z)
+        @nodes[key]
+      end
+
+      def neighbors(node)
+        node.edge_nodes
+      end
+    end
+  end
+end

lib/cyberarm_engine/pathfinding/graph_search.rb

@@ -0,0 +1,6 @@
+module CyberarmEngine
+  module Pathfinding
+    class GraphSearch
+    end
+  end
+end

lib/cyberarm_engine/pathfinding/graph_searches/astar_search.rb

@@ -0,0 +1,6 @@
+module CyberarmEngine
+  module Pathfinding
+    class AStarSearch < GraphSearch
+    end
+  end
+end

lib/cyberarm_engine/pathfinding/graph_searches/breadth_first_search.rb

@@ -0,0 +1,27 @@
+module CyberarmEngine
+  module Pathfinding
+    class BreadthFirstSearch < GraphSearch
+      def self.search(graph:, start:, goal: nil)
+        frontier = []
+        came_from = {}
+
+        frontier.push(start)
+        came_from[start.key] = start
+
+        while(current = frontier.shift)
+          # early exit if we reach our goal
+          break if current == goal
+
+          graph.neighbors(current).each do |neighbor|
+            next if came_from[neighbor.key]
+
+            frontier.push(neighbor)
+            came_from[neighbor.key] = current
+          end
+        end
+
+        came_from
+      end
+    end
+  end
+end

lib/cyberarm_engine/pathfinding/graph_searches/dijkstra_search.rb

@@ -0,0 +1,6 @@
+module CyberarmEngine
+  module Pathfinding
+    class DijkstraSearch < GraphSearch
+    end
+  end
+end

lib/cyberarm_engine/pathfinding/graphs/grid.rb

@@ -0,0 +1,52 @@
+module CyberarmEngine
+  module Pathfinding
+    class Grid < Graph
+      def add_node(x:, y:, z: 0, cost: 0, replace: false)
+        key = format(Node::KEY_FORMAT, x, y, z)
+        node = @nodes[key]
+
+        raise "Node at: #{key} already exists! (#{node})" if node && !replace
+
+        node = Node.new(x: x, y: y, z: z, cost: cost)
+        @nodes[key] = node
+
+        update_node_edge_nodes(node)
+        node
+      end
+
+      def remove_node(node)
+        update_node_edge_nodes(node, remove_node: true)
+
+        @nodes.delete(node.key)
+      end
+
+      def update_node_edge_nodes(node, remove_node: false)
+        x = node.x
+        y = node.y
+        z = node.z
+
+        # add node to neighbors
+        # 2D
+        left = @nodes[format(Node::KEY_FORMAT, x - 1, y, z)]
+        right = @nodes[format(Node::KEY_FORMAT, x + 1, y, z)]
+        top = @nodes[format(Node::KEY_FORMAT, x, y - 1, z)]
+        bottom = @nodes[format(Node::KEY_FORMAT, x, y + 1, z)]
+        # 3D
+        front = @nodes[format(Node::KEY_FORMAT, x, y, z - 1)]
+        back = @nodes[format(Node::KEY_FORMAT, x, y, z + 1)]
+
+        possible_edge_nodes = [left, right, top, bottom, front, back]
+
+        if remove_node
+          possible_edge_nodes.each { |n| n&.remove_edge_node(node) }
+        else
+          possible_edge_nodes.each { |n| n&.add_edge_node(node) }
+        end
+      end
+
+      def update_edge_nodes
+        @nodes.each { |k, n| update_node_edge_nodes(n) }
+      end
+    end
+  end
+end

lib/cyberarm_engine/text.rb

@@ -149,7 +149,7 @@ module CyberarmEngine
       @border_alpha = n
     end
 
-    def border_color=(n)
+    def border_color=(color)
       old_color = @border_color
 
       if color
@@ -208,17 +208,17 @@ module CyberarmEngine
           img = Gosu::Image.send(:"from_#{method.to_s.split("_").last}", @text, @size, font: @font)
 
           @cached_text_border_image = Gosu.render((_width + (@border_size * 2)).ceil, (height + (@border_size * 2)).ceil) do
-            img.draw(-_x, 0, @z, @factor_x, @factor_y, @border_color, @mode)
-            img.draw(-_x, -_y, @z, @factor_x, @factor_y, @border_color, @mode)
+            img.draw(-_x, 0, @z, @factor_x, @factor_y, Gosu::Color::WHITE, @mode)
+            img.draw(-_x, -_y, @z, @factor_x, @factor_y, Gosu::Color::WHITE, @mode)
 
-            img.draw(0, -_y, @z, @factor_x, @factor_y, @border_color, @mode)
-            img.draw(_x, -_y, @z, @factor_x, @factor_y, @border_color, @mode)
+            img.draw(0, -_y, @z, @factor_x, @factor_y, Gosu::Color::WHITE, @mode)
+            img.draw(_x, -_y, @z, @factor_x, @factor_y, Gosu::Color::WHITE, @mode)
 
-            img.draw(_x, 0, @z, @factor_x, @factor_y, @border_color, @mode)
-            img.draw(_x, _y, @z, @factor_x, @factor_y, @border_color, @mode)
+            img.draw(_x, 0, @z, @factor_x, @factor_y, Gosu::Color::WHITE, @mode)
+            img.draw(_x, _y, @z, @factor_x, @factor_y, Gosu::Color::WHITE, @mode)
 
-            img.draw(0, _y, @z, @factor_x, @factor_y, @border_color, @mode)
-            img.draw(-_x, _y, @z, @factor_x, @factor_y, @border_color, @mode)
+            img.draw(0, _y, @z, @factor_x, @factor_y, Gosu::Color::WHITE, @mode)
+            img.draw(-_x, _y, @z, @factor_x, @factor_y, Gosu::Color::WHITE, @mode)
           end
         end
 
@@ -256,7 +256,7 @@ module CyberarmEngine
             @textobject.send(method, @text, _x + @border_size, _y + @border_size, @z, @factor_x, @factor_y, white, @mode)
           end
 
-          @cached_text_border_image.draw(@x - @border_size, @y - @border_size, @z, @factor_x, @factor_y, border_color)
+          @cached_text_border_image.draw(@x - @border_size, @y - @border_size, @z, @factor_x, @factor_y, border_color, @mode)
         end
 
         if @shadow

lib/cyberarm_engine/ui/element.rb

@@ -18,7 +18,7 @@ module CyberarmEngine
       @visible = !@options.key?(:visible) ? true  : @options[:visible]
       @tip     = @options[:tip] || ""
 
-      @debug = @options[:debug] || CyberarmEngine.const_defined?("GUI_DEBUG") && CyberarmEngine::GUI_DEBUG || false
+      @debug = @options[:debug].nil? ? nil : @options[:debug]
       @debug_color = @options[:debug_color].nil? ? Gosu::Color::RED : @options[:debug_color]
 
       @style = Style.new(options)
@@ -36,7 +36,7 @@ module CyberarmEngine
       @width  = 0
       @height = 0
 
-      @style.width  = default(:width)  || nil
+      @style.width  = default(:width) || nil
       @style.height = default(:height) || nil
 
       @background_canvas = nil # Background.new
@@ -56,7 +56,7 @@ module CyberarmEngine
     def resolution_scaled(n)
       return n unless @style.design_width
 
-      ((@style.design_width / Gosu.screen_width(window).to_f) * n).floor
+      ((Gosu.screen_width(window).to_f / @style.design_width) * n).floor
     end
 
     def stylize
@@ -215,6 +215,7 @@ module CyberarmEngine
       event(:blur)
 
       event(:changed)
+      event(:size_changed)
     end
 
     def enter(_sender)
@@ -339,7 +340,7 @@ module CyberarmEngine
     end
 
     def debug_draw
-      return unless @debug # allow elements to opt out of debug drawing, makes debugging some things easier.
+      return if @debug == false || !CyberarmEngine::GUI_DEBUG # allow elements to opt out of debug drawing, makes debugging some things easier.
       return if CyberarmEngine.const_defined?("GUI_DEBUG_ONLY_ELEMENT") && self.class == GUI_DEBUG_ONLY_ELEMENT
 
       Gosu.draw_line(
@@ -393,7 +394,7 @@ module CyberarmEngine
 
     def width
       if visible?
-        inner_width + @width
+        inner_width + content_width
       else
         0
       end
@@ -417,7 +418,7 @@ module CyberarmEngine
 
     def height
       if visible?
-        inner_height + @height
+        inner_height + content_height
       else
         0
       end
@@ -487,6 +488,8 @@ module CyberarmEngine
 
       new_size = if size.is_a?(Float) && size.between?(0.0, 1.0)
                    (@parent.send(:"content_#{dimension}") * size).floor - send(:"noncontent_#{dimension}").floor
+                elsif size.is_a?(Numeric)
+                   (size - send(:"noncontent_#{dimension}")).floor
                  else
                    size
                  end
@@ -515,7 +518,7 @@ module CyberarmEngine
 
     def space_available_height
       # TODO: This may get expensive if there are a lot of children, probably should cache it somehow
-      fill_siblings = @parent.children.select { |c| c.styled(:fill) }.count.to_f # include self since we're dividing
+      fill_siblings = @parent.children.select { |c| c.styled(:fill) && c.visible? }.count.to_f # include self since we're dividing
 
       available_space = ((@parent.content_height - (@parent.children.reject { |c| c.styled(:fill) }).map(&:outer_height).sum) / fill_siblings)
       (available_space.nan? || available_space.infinite?) ? 0 : available_space.floor # The parent element might not have its dimensions, yet.
@@ -576,6 +579,8 @@ module CyberarmEngine
 
         @old_width = width
         @old_height = height
+
+        publish(:size_changed)
       end
     end
 

lib/cyberarm_engine/ui/elements/check_box.rb

@@ -46,7 +46,7 @@ module CyberarmEngine
       end
 
       def value=(bool)
-        old_value = this.value
+        old_value = self.value
 
         @toggle_button.value = bool
         publish(:changed, bool) if bool != old_value

lib/cyberarm_engine/ui/elements/container.rb

@@ -88,17 +88,20 @@ module CyberarmEngine
 
           Gosu.translate(@scroll_position.x, @scroll_position.y) do
             @children.each(&:draw)
+
+            @children.each do |child|
+              next unless child.visible?
+
+              child.debug_draw
+            end
           end
         end
 
-        @children.each(&:debug_draw)
         debug_draw
       end
 
       def debug_draw
         super
-
-        @children.each(&:debug_draw)
       end
 
       def update
@@ -203,9 +206,9 @@ module CyberarmEngine
 
           case styled(:v_align)
           when :center
-            @y = parent.y + parent.styled(:margin_top) + parent.height / 2 - height / 2
+            @y = parent.y + parent.outer_height / 2 - outer_height / 2
           when :bottom
-            @y = parent.y + parent.styled(:margin_top) + parent.height - height
+            @y = parent.y + parent.outer_height - outer_height
           end
         end
 
@@ -214,9 +217,9 @@ module CyberarmEngine
 
           case styled(:h_align)
           when :center
-            @x = parent.x + parent.styled(:margin_left) + parent.width / 2 - width / 2
+            @x = parent.x + parent.outer_width / 2 - outer_width / 2
           when :right
-            @x = parent.x + parent.styled(:margin_left) + parent.width - width
+            @x = parent.x + parent.outer_width - outer_width
           end
         end
 
@@ -285,7 +288,7 @@ module CyberarmEngine
       end
 
       def position_on_next_line(element) # Flow
-        @current_position.x = 0
+        @current_position.x = styled(:margin_left) + styled(:padding_left)
         @current_position.y += tallest_neighbor(element, @current_position.y).outer_height
 
         element.x = @current_position.x

lib/cyberarm_engine/ui/elements/slider.rb

@@ -94,7 +94,7 @@ module CyberarmEngine
       end
 
       def value=(n)
-        old_value = this.value
+        old_value = self.value
 
         @value = n
         position_handle

lib/cyberarm_engine/ui/elements/widget.rb

@@ -24,7 +24,16 @@ module CyberarmEngine
       # Enable child elements to display their tooltips
       # but fall back to the Widget if no hit element has a tip
       def tip
-        elements = hit_element?(window.mouse_x, window.mouse_y)
+        parent_scroll_position = CyberarmEngine::Vector.new
+
+        element = self
+        while (parent_element = element.parent)
+          parent_scroll_position += parent_element.scroll_position
+
+          element = parent_element
+        end
+
+        elements = hit_element?(window.mouse_x - parent_scroll_position.x, window.mouse_y - parent_scroll_position.y)
 
         return @tip unless elements
 

lib/cyberarm_engine/ui/gui_state.rb

@@ -98,7 +98,15 @@ module CyberarmEngine
       Stats.frame.start_timing(:gui_element_recalculate_requests)
 
       # puts "PENDING REQUESTS: #{@pending_element_recalculate_requests.size}" if @pending_element_recalculate_requests.size.positive?
-      @pending_element_recalculate_requests.shift(&:recalculate)
+      while (e = @pending_element_recalculate_requests.shift)
+        # its pointless to recalculate individual elements when we've been asked to recalculate the whole gui
+        if @pending_recalculate_request
+          @pending_element_recalculate_requests.clear
+          break
+        end
+
+        e.recalculate
+      end
 
       Stats.frame.end_timing(:gui_element_recalculate_requests)
 
@@ -231,6 +239,9 @@ module CyberarmEngine
         redirect_mouse_button(:right)
       when Gosu::KB_F5
         request_recalculate
+      when Gosu::KB_F12
+        CyberarmEngine.const_set(:GUI_DEBUG, !CyberarmEngine::GUI_DEBUG)
+        request_repaint
       end
 
       @focus.button_down(id) if @focus.respond_to?(:button_down)

lib/cyberarm_engine/version.rb

@@ -1,4 +1,4 @@
 module CyberarmEngine
   NAME    = "InDev".freeze
-  VERSION = "0.25.1".freeze
+  VERSION = "0.30.0".freeze
 end

lib/cyberarm_engine/window.rb

@@ -6,6 +6,9 @@ module CyberarmEngine
     SAMPLES = {}
     SONGS = {}
 
+    FixedUpdateProperties = Data.define(:fixed_timestep, :fixed_timestep_int_ms, :max_timestep)
+    FixedUpdate = Struct.new(:milliseconds, :accumulator, :interpolation, :alpha)
+
     attr_accessor :show_cursor, :show_stats_plotter
     attr_writer :exit_on_opengl_error
     attr_reader :last_frame_time, :delta_time, :states
@@ -28,7 +31,7 @@ module CyberarmEngine
       @@instance
     end
 
-    def initialize(width: 800, height: 600, fullscreen: false, update_interval: 1000.0 / 60, resizable: false, borderless: false)
+    def initialize(width: 800, height: 600, fullscreen: false, update_interval: 1000.0 / 60, resizable: false, borderless: false, fixed_update_timestep: 1.0 / 125, fixed_update_timestep_int_ms: 8, fixed_max_timestep: 1.0 / 60)
       @show_cursor = false
       @has_focus = false
       @show_stats_plotter = false
@@ -46,6 +49,9 @@ module CyberarmEngine
       preload_default_shaders if respond_to?(:preload_default_shaders)
       @stats_plotter = Stats::StatsPlotter.new(2, 28) # FIXME: Make positioning easy
 
+      @fixed_timestep_data = FixedUpdateProperties.new(1.0 / 125, 8, 1.0 / 60)
+      @fixed_update = FixedUpdate.new(0, 0.0, 0.0, 1.0)
+
       setup
     end
 
@@ -79,11 +85,44 @@ module CyberarmEngine
 
       Stats.frame.start_timing(:update)
       current_state&.update
+      Stats.frame.start_timing(:fixed_update)
+      fixed_update
+      Stats.frame.end_timing(:fixed_update)
       Stats.frame.end_timing(:update)
 
       Stats.frame.start_timing(:interframe_sleep) unless needs_redraw?
     end
 
+    def fixed_update
+      @delta_time = @fixed_timestep_data.max_timestep if @delta_time > @fixed_timestep_data.max_timestep
+      @fixed_update.accumulator += @delta_time
+
+      while @fixed_update.accumulator >= @fixed_timestep_data.fixed_timestep
+        @fixed_update.accumulator -= @fixed_timestep_data.fixed_timestep
+
+        @fixed_update.alpha = @fixed_update.accumulator / @fixed_timestep_data.fixed_timestep
+
+        @fixed_update.milliseconds += @fixed_timestep_data.fixed_timestep_int_ms
+        current_state&.fixed_update(@fixed_timestep_data.fixed_timestep)
+      end
+    end
+
+    def fixed_update_milliseconds
+      @fixed_update.milliseconds
+    end
+
+    def fixed_update_accumulator
+      @fixed_update.accumulator
+    end
+
+    def fixed_update_interpolation
+      @fixed_update.interpolation
+    end
+
+    def fixed_update_alpha
+      @fixed_update.alpha
+    end
+
     def needs_cursor?
       @show_cursor
     end