Testing for a block in a certain radius
I am making an arrow that explodes when it hits anything, but I need a way to testfor all blocks within a radius of 2 blocks to see if they're air or not. The only problem is, I dont know how.
Best Answer
Rather than testing for air blocks, why not use the inGround datatag for this:
First create a scoreboard:
/scoreboard objectives add arrow dummy
Then, run these 2 commands on a fast clock:
/scoreboard players add @e[type=Arrow] arrow 1 {inGround:true}
/execute @e[score_arrow_min=1] ~ ~ ~ summon Creeper ~ ~ ~ {Fuse:1,ignited:1,ActiveEffects:[{Id:14,Amplifier:1,Duration:999999}],powered:true}
Happy exploding :)
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How do you Testfor a player in a radius?
2. Type the CommandHow do you test for blocks?
You can test whether there is a certain block at a specific location in the game using the /testforblock command in Minecraft. TIP: Starting in Minecraft Java Edition (PC/Mac) 1.13, the /testforblock command was removed from the Java Edition version of the game.How do I find a specific block in Minecraft?
The blank is for the particular block you are looking for. Let's say you're lost in the Nether and need to find your Nether Portal, you could type : /locateblock obsidian, and get the coordinates for the nearest obsidian, most likely being your, said, Portal.Detect When A Player Is At A Block/Blocks Minecraft
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Answer 2
You can use the testforblocks command to easily check for whether an area contains only air or not, but it would require a designated area which must remain empty at all times. If this is on a server, you may want to encase this region in bedrock and "hide" it underground somewhere. As an example of usage, you would want to type
/testforblocks 0 60 0 3 63 3 30 70 30
if the empty area was (0,60,0) to (3,63,3) and the area to check for emptiness was (30,70,30) to (33,73,33). Technically speaking, the two regions could be switched without any noticeable effect on the result. I would imagine that in your particular case, you'd want something more along the lines of
/execute @e[type=Arrow] ~ ~ ~ /testforblocks 0 60 0 3 63 3 ~-1 ~-1 ~-1
along with whatever else you plan to do. Hope that helps!
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