XMIN is a constant we have previously defined in the code showing where the tunnel starts. The shape of this tunnel is horizontal at ground level, then slopes down until it reaches level 10, goes horizontal for a while, then slopes up until it reaches ground level again and finishes off horizontal.<\/p>\n
Here is the full code<\/p>\n
import mcpi.minecraft as minecraft\r\nimport mcpi.block as block\r\nmc=minecraft.Minecraft.create()\r\nXMIN = -400 # x value at one end of tunnel.\r\nXMAX = -200 # x value at other end of tunnel. Must be greater than XMIN\r\nGROUND = 72 # y position of tunnel at each end\r\nFLOOR = 10 # minimum value of y at bottom of tunnel\r\nZPOS = -222 # z position for full length of tunnel\r\nTAIL = 10 # length of horizontal at each end of tunnel\r\n\r\n# constants for tunnelvertical function\r\nkx = (XMAX + XMIN) \/ 2\r\nky = GROUND + TAIL - (XMAX - XMIN) \/ 2\r\n\r\n# tunnelvertical returns a vertical position of the tunnel\r\n# for each value of the x position (eastposition)\r\ndef tunnelvertical(eastposition):\r\n y = abs(eastposition - kx) + ky\r\n if y < FLOOR:\r\n return FLOOR\r\n if y > GROUND: \r\n return GROUND\r\n return y\r\n\r\n# set the z coordinate for the tunnel which doesn't change for the full length \r\nz = ZPOS\r\n\r\n# Initial loop to create a route made of solid glass with a stone base \r\nfor x in range(XMIN,XMAX+1):\r\n y = tunnelvertical(x)\r\n mc.setBlocks(x,y,z-2,x,y+6,z+2,block.GLASS)\r\n mc.setBlocks(x,y,z-1,x,y,z+1,block.STONE)\r\n\r\n# Second loop to convert solid glass into a tunnel\r\nfor x in range(XMIN+1,XMAX):\r\n y = tunnelvertical(x)\r\n # replace centre glass with air to make it a tunnel\r\n mc.setBlocks(x,y+1,z-1,x,y+5,z+1,block.AIR)\r\n # place a torch every 4 positions to light the tunnel\r\n if x % 4 == 0:\r\n mc.setBlock(x,y+1,z+1,block.TORCH.id,5)\r\n<\/pre>\n
![\"\"](\"https:\/\/www.triptera.com.au\/wordpress\/wp-content\/uploads\/2017\/07\/verticalroute.png\")
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