Added autofocus to edit dialogs first editline, added tab support for selecting next focusable element in edit dialogs, made valid? method be called in edit dialogs when fields change, simulator robot can now strafe side to side

lib/simulator/robot.rb

@@ -75,6 +75,14 @@ module TAC
         @queue << Move.new(robot: self, distance: -distance, power: power)
       end
 
+      def strafe_right(distance, power = 1.0)
+        @queue << Strafe.new(robot: self, distance: distance, power: power)
+      end
+
+      def strafe_left(distance, power = 1.0)
+        @queue << Strafe.new(robot: self, distance: -distance, power: power)
+      end
+
       def turn(relative_angle, power = 1.0)
         @queue << Turn.new(robot: self, relative_angle: relative_angle, power: power)
       end
@@ -143,6 +151,52 @@ class State
         end
       end
 
+      class Strafe < State
+        def initialize(robot:, distance:, power:)
+          @robot = robot
+          @distance = distance
+          @power = power.clamp(-1.0, 1.0)
+        end
+
+        def start
+          @starting_position = @robot.position.clone
+          @goal = @starting_position.clone
+          if @distance.positive?
+            @goal.x += Math.cos((@robot.angle + 90).gosu_to_radians) * @distance
+            @goal.y += Math.sin((@robot.angle + 90).gosu_to_radians) * @distance
+          else
+            @goal.x += Math.cos((@robot.angle - 90).gosu_to_radians) * @distance
+            @goal.y += Math.sin((@robot.angle - 90).gosu_to_radians) * @distance
+          end
+
+          @complete = false
+          @allowable_error = 1.0
+        end
+
+        def draw
+          Gosu.draw_line(
+            @robot.position.x + @robot.width / 2, @robot.position.y + @robot.depth / 2, TAC::Palette::TIMECRAFTERS_TERTIARY,
+            @goal.x + @robot.width / 2, @goal.y + @robot.depth / 2, TAC::Palette::TIMECRAFTERS_TERTIARY
+          )
+          Gosu.draw_rect(@goal.x + (@robot.width / 2 - 1), @goal.y + (@robot.depth / 2 - 1), 2, 2, Gosu::Color::RED)
+        end
+
+        def update(dt)
+          speed = (@distance > 0 ? @power * dt : -@power * dt) * @robot.speed
+
+          if @robot.position.distance(@goal) <= @allowable_error
+            @complete = true
+            @robot.position = @goal
+          else
+            if speed > 0
+              @robot.position -= (@robot.position - @goal).normalized * speed
+            else
+              @robot.position += (@robot.position - @goal).normalized * speed
+            end
+          end
+        end
+      end
+
       class Turn < State
         def initialize(robot:, relative_angle:, power:)
           @robot = robot