-- use this to copy a finished buildzone A (MASTER) to a target buildzone B (TARGET)
-- it takes any coordinate in A and B as input
-- the copying automatically takes the current grid setup for the PHV which is in the variable FIRST_ZONE
-- MAKE SURE the coordinates match the coordinates form the main game script before running this one
-- the script clones with "replace" flag so it overwrites everything in the target location
-- the cloning clones everything from the ground (y=55) to the sky (y=255)


BUILDZONE_WIDTH = 62 -- the actual zone width is 63 blocks, but for some reason due to how minecraft handles relative coordinates this has to be 62

FIRSTZONE= {
	x=11685,
	y=57,
	z=-1869
}

POINT_IN_MASTER_GAMETILE={
	x=11701,
	z=-1955
}

POINT_IN_TARGET_GAMETILE={
	x=12172,
	z=-1769
}

-- the CreateCloningParams function takes in a point in the buildzone A and a point in the buildzone B as parameters
-- it returns the coordinates needed for the minecraft clone command (start point x1,y1,z1 and end point x2,y2,z2 of the master and start point x,y,z of the target)
-- the minecraft clone command has a limitation of 32768 blocks (enough for the equivalent of eight chunk sections)
-- therefore a list of multiple clone commands is generated if the volume of the gametile is bigger
function CreateCloningParams(pA, pB)
	local gt = {} -- the variable to hold the clone coordinates data for all layers of the buildzone. Like a cake :)


	local layerHeight = math.floor(32768/(BUILDZONE_WIDTH*BUILDZONE_WIDTH))+1
	--print(layerHeight)
	local counter = 1
	for y = 55, 254, layerHeight do
		local gtLayer = {} -- a variable to hold the clone variables for one layer of the buildzone, each layer is so tall so that Volume = buildzone_width^2*layerHeight < 32768
		gtLayer.x1 = math.floor((pA.x-FIRSTZONE.x)/(BUILDZONE_WIDTH+1))*(BUILDZONE_WIDTH+1)+FIRSTZONE.x
		--print(gtLayer.x1)
		gtLayer.y1 = y
		--print(gtLayer.y1)
		gtLayer.z1 = math.floor((pA.z-FIRSTZONE.z)/(BUILDZONE_WIDTH+1))*(BUILDZONE_WIDTH+1)+FIRSTZONE.z
		--print(gtLayer.z1)
		gtLayer.x2 = gtLayer.x1 + BUILDZONE_WIDTH
		--print(gtLayer.x2)
		gtLayer.y2 = y+layerHeight-1
		--print(gtLayer.y2)
		gtLayer.z2 = gtLayer.z1 + BUILDZONE_WIDTH
		--print(gtLayer.z2)
		gtLayer.x = math.floor((pB.x-FIRSTZONE.x)/(BUILDZONE_WIDTH+1))*(BUILDZONE_WIDTH+1)+FIRSTZONE.x
		gtLayer.y = y
		gtLayer.z = math.floor((pB.z-FIRSTZONE.z)/(BUILDZONE_WIDTH+1))*(BUILDZONE_WIDTH+1)+FIRSTZONE.z
		--add to the clone params array
		gt[counter] = gtLayer
		counter = counter + 1
	end
	return gt
end

-- the CloneBuildZone function takes in a point in the buildzone A and a point in the buildzone B as parameters
function CloneBuildZone(pA, pB)
	commands.say("cloning zone")
	local cp = CreateCloningParams(pA, pB)
	for i,layer in ipairs(cp) do
		print("cloning layer at: "..layer.x1..", "..layer.y1..", "..layer.z1..", "..layer.x2..", "..layer.y2..", "..layer.z2..", "..layer.x..", ".. layer.y..", "..layer.z)
		commands.clone(layer.x1,layer.y1,layer.z1,layer.x2,layer.y2,layer.z2,layer.x,layer.y,layer.z,"replace")
	end
	commands.say("zone cloned")
end

CloneBuildZone(POINT_IN_MASTER_GAMETILE,POINT_IN_TARGET_GAMETILE)