Grimrock

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-----  Animation alcoves ----------------------------------------------------
----------------------- Functions for Ramp ------------------------------------

function GetKQ(ax,ay,bx,by)
local k,q
  k = (by-ay)*1.0/(bx-ax)*1.0
  q = 1.0*ay-(k*ax)
  return k,q
end

function GetLV(ramp,i)
return ramp[i-1].x,ramp[i-1].y,ramp[i].x,ramp[i].y
end

function GetTableFromRamp(ramp,poc)
local ax,ay,bx,by,k,q,i,j,p,x
local tab = {}
  p = 100.0 / (poc*1.0)
  i = 2
  ax,ay,bx,by = GetLV(TRamp,i)
  for j = 1, poc do
    x = (j*1.0)*(p*1.0)
    while (x > bx) and (i < #TRamp) do
      i = i+1
      ax,ay,bx,by = GetLV(TRamp,i)
    end
    if x == bx then 
      y=by
    else
      ax,ay,bx,by = GetLV(TRamp,i)
      k,q = GetKQ(ax,ay,bx,by)
      y = k*x + q
    end
    tab[j]={["x"]=x,["y"]=y/100.0}
  end 
return tab 
end


SpikeAnimCount = 20
--TRamp = {{x=0,y=0},{x=10,y=80},{x=20,y=50},{x=30,y=100},{x=50,y=100},{x=100,y=0}}
TRamp = {{x=0,y=0},{x=10,y=100},{x=20,y=80},{x=30,y=70},{x=100,y=0}}
TTRamp = GetTableFromRamp(TRamp,SpikeAnimCount)
for i = 1, #TTRamp do
  defineObject{
  	name = "spikeTrap_socket_"..i-1,
  	class = "Alcove",
  	anchorPos = vec(0, (0.5*TTRamp[i].y)-0.5, -1.5),
  	anchorRotation = vec(0, 0, 0),
  	targetPos = vec(0, 5, 0),
  	targetSize = vec(1, 1, 1),
  	placement = "wall",
  	onInsertItem = function(self, item)
  		return item.name == "SpikeTrap_spikes" and self:getItemCount() == 0
  	end,
  	editorIcon = 92,
  }
end