Class: Reight::MapEditor::Line

Inherits:
BrushBase show all
Defined in:
lib/reight/app/map/line.rb

Instance Attribute Summary

Attributes inherited from Tool

#app

Attributes inherited from Button

#icon, #label, #name

Instance Method Summary collapse

Methods inherited from BrushBase

#canvas_clicked, #canvas_dragged, #canvas_moved, #canvas_pressed, #canvas_released, #put_or_remove_chip, #update_cursor

Methods inherited from Tool

#canvas, #canvas_clicked, #canvas_dragged, #canvas_moved, #canvas_pressed, #canvas_released, #chips, #history, #name, #pick_chip

Methods inherited from Button

#click, #disabled?, #disabled_icon, #draw, #enabled?, #hover, #pressed, #pressing?, #released, #sprite

Methods included from HasHelp

#help, #name, #set_help

Methods included from Hookable

#hook

Methods included from Activatable

#activated, #activated!, #active=, #active?

Constructor Details

#initialize(app, &block) ⇒ Line

Returns a new instance of Line.



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# File 'lib/reight/app/map/line.rb', line 6

def initialize(app, &block)
  super app, icon: app.icon(4, 2, 8), &block
  set_help left: name, right: 'Pick Chip'
end

Instance Method Details

#brush(cursor_from, cursor_to, chip) ⇒ Object 



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# File 'lib/reight/app/map/line.rb', line 11

def brush(cursor_from, cursor_to, chip)
  result = false
  canvas.begin_editing do
    fromx, fromy = cursor_from[...2]
    tox,   toy   = cursor_to[...2]
    dx           = fromx < tox ? chip.w : -chip.w
    dy           = fromy < toy ? chip.h : -chip.h
    if (tox - fromx).abs > (toy - fromy).abs
      (fromx..tox).step(dx).each do |x|
        y = fromy == toy ? toy : map(x, fromx, tox, fromy, toy)
        y = y / chip.h * chip.h
        result |= put_or_remove_chip x, y, chip
      end
    else
      (fromy..toy).step(dy).each do |y|
        x = fromx == tox ? tox : map(y, fromy, toy, fromx, tox)
        x = x / chip.w * chip.w
        result |= put_or_remove_chip x, y, chip
      end
    end
  end
  result
end