@@ -11,7 +11,6 @@ - Add: Surface#set_at(). - Add: Screen#icon=(). -- Add: Sprites::ScrollGroup. === Bug Fixes @@ -32,7 +31,7 @@ === Acknowledgements - Michael Swiger (mokkan) for Screen#icon=. -- ippa for optimizing Rect#collide_rect? and adding Sprites::ScrollGroup. +- ippa for optimizing Rect#collide_rect?. NEWS @@ -507,75 +507,5 @@ module Rubygame end end - # ScrollGroup is a mix-in module that extends Group to allow sprites - # to be "scrollable", meaning that the sprites within the group is drawn/undrawn - # with a modifiable viewport-offset (a Rect). - # - # Example behaivor of this functionallity could be modifying the viewport when - # the player scrolls the screen up/down/left/right with the arrows or mouse. - # - # Based of LimitGroup so it has @dirty_rects, but also adds: - # - ScrollGroup#viewport - all draws/undraws are offsetet with this Rect. - # - Only draw/undraws sprites within the current viewport to save CPU. - # - module ScrollGroup - attr_accessor :dirty_rects, :viewport - - # Defines @dirty_rects when an existing object is extended. - def ScrollGroup.extend_object(obj) - super - obj.dirty_rects = [] - obj.viewport = Rect.new(0, 0, 0, 0) - end - - # Initialize the Group, calling +super+ and defining @dirty_rects. - def initialize - super - @dirty_rects = [] - @viewport = Rect.new(0, 0, 0, 0) - end - - # call-seq: inside_viewport?(rect) -> true|false - # - # Checks if rect is inside the current viewport. - # Used to only draw/undraw sprites inside the viewport (the onscreen visiable area of a gamemap) - # - def inside_viewport?(rect) - rect.x >= 0 && rect.x <= @viewport.width && rect.y >= 0 && rect.y <= @viewport.height - end - - # call-seq: draw(dest) -> Array - # - # Draw every sprite on Surface +dest+. See Group#draw. - # Returns an Array of Rects representing the portions of +dest+ which - # were affected by the last #undraw and this #draw. - def draw(destination) - self.each do |sprite| - rect = sprite.rect.move(@viewport.x, @viewport.y) - - if inside_viewport?(rect) - @dirty_rects.push(sprite.image.blit(destination, rect)) - end - end - rects = @dirty_rects - @dirty_rects = [] - return rects - end - - # Draw over part of +dest+ with image data from the corresponding part - # of +background+. For best results, +background+ should be at least as - # big as +dest+ (or, rather, the part of +dest+ that will ever be drawn - # over). - def undraw(destination, background) - self.each do |sprite| - rect = sprite.rect.move(@viewport.x, @viewport.y) - if inside_viewport?(rect) - background.blit(destination, rect, rect) - @dirty_rects.push(rect) - end - end - end - end # module ScrollGroup - end #module Sprite end # module Rubygame lib/rubygame/sprite.rb 3fd06a993704b32aa4a73bf05cb5789a4de25762 John Croisant jacius@gmail.com http://github.com/jacius/rubygame/commit/e31931e60bacb4bf9268067cd8998822401abceb e31931e60bacb4bf9268067cd8998822401abceb 2007-12-18T23:07:45-08:00 2007-12-18T23:07:45-08:00 Removed ScrollGroup for now; it's not mature enough to ship. 8d6a341ca65cdc0233e8720ef1aead0edfcaced9 John Croisant jacius@gmail.com