44 lines
983 B
Lua
44 lines
983 B
Lua
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local min = math.min
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local abs = math.abs
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--local deg = math.deg
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function demoiselle.physics(self)
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local friction = 0.99
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local vel=self.object:get_velocity()
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-- dumb friction
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if self.isonground and not self.isinliquid then
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vel = {x=vel.x*friction,
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y=vel.y,
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z=vel.z*friction}
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self.object:set_velocity(vel)
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end
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-- bounciness
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if self.springiness and self.springiness > 0 then
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local vnew = vector.new(vel)
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if not self.collided then -- ugly workaround for inconsistent collisions
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for _,k in ipairs({'y','z','x'}) do
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if vel[k]==0 and abs(self.lastvelocity[k])> 0.1 then
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vnew[k]=-self.lastvelocity[k]*self.springiness
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end
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end
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end
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if not vector.equals(vel,vnew) then
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self.collided = true
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else
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if self.collided then
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vnew = vector.new(self.lastvelocity)
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end
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self.collided = false
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end
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self.object:set_velocity(vnew)
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end
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self.object:set_acceleration({x=0,y=airutils.gravity,z=0})
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end
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