Class: Zyps::CollisionCondition

Inherits:
Condition
  • Object
show all
Defined in:
lib/zyps/conditions.rb

Overview

True only if collided with target.

Instance Method Summary collapse

Instance Method Details

#select(actor, targets) ⇒ Object

Returns an array of targets that have collided with the actor.



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# File 'lib/zyps/conditions.rb', line 69

def select(actor, targets)
	return [] unless targets.length > 0
	#The size of the largest other object
	max_size = targets.map{|t| t.size}.max
	#The maximum distance on a straight line the largest object and self could be and still be touching.
	max_diff = Math.sqrt(actor.size / Math::PI) + Math.sqrt(max_size / Math::PI)
	x_range = (actor.location.x - max_diff .. actor.location.x + max_diff)
	y_range = (actor.location.y - max_diff .. actor.location.y + max_diff)
	targets.select do | target |
		x_range.include?(target.location.x) and y_range.include?(target.location.y) and Utility.collided?(actor, target)
	end
end