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----------------------------------------------------------------------------------
-- Copyright 2009-2010 The Mana World Development Team --
-- --
-- This file is part of The Mana World. --
-- --
-- The Mana World is free software; you can redistribute it and/or modify it --
-- under the terms of the GNU General Public License as published by the Free --
-- Software Foundation; either version 2 of the License, or any later version. --
----------------------------------------------------------------------------------
shake_count = 0
function shaker_update(npc)
shake_count = shake_count + 1
if shake_count > 20 then
shake_count = 0
center_x = posX(npc)
center_y = posY(npc)
tremor(center_x, center_y, 300)
end
end
-- function which causes a screen shake effect for all players near a
-- certain point with an intensity and direction relative to said point
function square(x)
return x * x
end
function tremor (center_x, center_y, intensity)
for dummy, object in ipairs(get_beings_in_circle(center_x, center_y, intensity)) do
if being_type(object) == TYPE_CHARACTER then
object_x = posX(object)
object_y = posY(object)
dist_x = object_x - center_x
dist_y = object_y - center_y
dist = math.sqrt(square(dist_x) + square(dist_y))
intensity_local = intensity - dist
intensity_x = (intensity - dist) * (dist_x / dist) / 5
intensity_y = (intensity - dist) * (dist_y / dist) / 5
chr_shake_screen(object, intensity_x, intensity_y)
end
end
end
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