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FF::Scn::BoidRules.add(
FF::Sys.new('Follow', priority: 70) do
FF::Cmp::Follow.each do |follow|
boid = follow.entities[0].components[FF::Cmp::Boid][0]
target_coords = [0.0, 0.0]
case follow.target
when FF::Cmp::Boid
target_coords[0] = follow.target.x
target_coords[1] = follow.target.y
when Array
target_coords[0] = follow.target[0]
target_coords[1] = follow.target[1]
when :mouse
camera = FF::Cmp::SingletonCamera[0]
angle = camera.angle * (Math::PI / 180)
mouse = $gtk.args.inputs.mouse
half_width = $gtk.args.grid.w * 0.5
half_height = $gtk.args.grid.h * 0.5
target_coords[0] = (((mouse.x - half_width) / camera.zoom) * Math.cos(-angle)) - (((mouse.y - half_height) / camera.zoom) * Math.sin(-angle)) + camera.x
target_coords[1] = (((mouse.x - half_width) / camera.zoom) * Math.sin(-angle)) + (((mouse.y - half_height) / camera.zoom) * Math.cos(-angle)) + camera.y
end
boid.cx += (target_coords[0] - boid.x) / follow.strength.to_f
boid.cy += (target_coords[1] - boid.y) / follow.strength.to_f
end
end
)
|
