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fix sometimes being able to mine blocks through walls
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,153 @@ | ||
| //! Random utility functions that are useful for bots. | ||
| use azalea_core::position::{BlockPos, Vec3}; | ||
| use azalea_entity::direction_looking_at; | ||
| use azalea_world::ChunkStorage; | ||
|
|
||
| /// Get a vec of block positions that we can reach from this position. | ||
| pub fn get_reachable_blocks_around_player( | ||
| player_position: BlockPos, | ||
| chunk_storage: &ChunkStorage, | ||
| ) -> Vec<BlockPos> { | ||
| // check a 12x12x12 area around the player | ||
| let mut blocks = Vec::new(); | ||
|
|
||
| for x in -6..=6 { | ||
| // y is 1 up to somewhat offset for the eye height | ||
| for y in -5..=7 { | ||
| for z in -6..=6 { | ||
| let block_pos = player_position + BlockPos::new(x, y, z); | ||
| let block_state = chunk_storage | ||
| .get_block_state(&block_pos) | ||
| .unwrap_or_default(); | ||
|
|
||
| if block_state.is_air() { | ||
| // fast path, skip if it's air | ||
| continue; | ||
| } | ||
|
|
||
| if can_reach_block(chunk_storage, player_position, block_pos) { | ||
| blocks.push(block_pos); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| blocks | ||
| } | ||
|
|
||
| pub fn pick_closest_block(position: BlockPos, blocks: &[BlockPos]) -> Option<BlockPos> { | ||
| // pick the closest one and mine it | ||
| let mut closest_block_pos = None; | ||
| let mut closest_distance = i32::MAX; | ||
| for block_pos in &blocks[1..] { | ||
| if block_pos.y < position.y { | ||
| // skip blocks below us at first | ||
| continue; | ||
| } | ||
| let distance = block_pos.distance_squared_to(&position); | ||
| if distance < closest_distance { | ||
| closest_block_pos = Some(*block_pos); | ||
| closest_distance = distance; | ||
| } | ||
| } | ||
|
|
||
| if closest_block_pos.is_none() { | ||
| // ok now check every block if the only ones around us are below | ||
| for block_pos in blocks { | ||
| let distance = block_pos.distance_squared_to(&position); | ||
| if distance < closest_distance { | ||
| closest_block_pos = Some(*block_pos); | ||
| closest_distance = distance; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| closest_block_pos | ||
| } | ||
|
|
||
| /// Return the block that we'd be looking at if we were at a given position and | ||
| /// looking at a given block. | ||
| /// | ||
| /// This is useful for telling if we'd be able to reach a block from a certain | ||
| /// position, like for the pathfinder's [`ReachBlockPosGoal`]. | ||
| /// | ||
| /// Also see [`get_hit_result_while_looking_at_with_eye_position`]. | ||
| /// | ||
| /// [`ReachBlockPosGoal`]: crate::pathfinder::goals::ReachBlockPosGoal | ||
| pub fn get_hit_result_while_looking_at( | ||
| chunk_storage: &ChunkStorage, | ||
| player_position: BlockPos, | ||
| look_target: BlockPos, | ||
| ) -> BlockPos { | ||
| let eye_position = Vec3 { | ||
| x: player_position.x as f64 + 0.5, | ||
| y: player_position.y as f64 + 1.53, | ||
| z: player_position.z as f64 + 0.5, | ||
| }; | ||
| get_hit_result_while_looking_at_with_eye_position(chunk_storage, eye_position, look_target) | ||
| } | ||
|
|
||
| pub fn can_reach_block( | ||
| chunk_storage: &ChunkStorage, | ||
| player_position: BlockPos, | ||
| look_target: BlockPos, | ||
| ) -> bool { | ||
| let hit_result = get_hit_result_while_looking_at(chunk_storage, player_position, look_target); | ||
| hit_result == look_target | ||
| } | ||
|
|
||
| /// Return the block that we'd be looking at if our eyes are at a given position | ||
| /// and looking at a given block. | ||
| /// | ||
| /// This is called by [`get_hit_result_while_looking_at`]. | ||
| pub fn get_hit_result_while_looking_at_with_eye_position( | ||
| chunk_storage: &azalea_world::ChunkStorage, | ||
| eye_position: Vec3, | ||
| look_target: BlockPos, | ||
| ) -> BlockPos { | ||
| let look_direction = direction_looking_at(&eye_position, &look_target.center()); | ||
| let block_hit_result = | ||
| azalea_client::interact::pick(&look_direction, &eye_position, chunk_storage, 4.5); | ||
| block_hit_result.block_pos | ||
| } | ||
|
|
||
| #[cfg(test)] | ||
| mod tests { | ||
| use azalea_core::position::ChunkPos; | ||
| use azalea_world::{Chunk, PartialInstance}; | ||
|
|
||
| use super::*; | ||
|
|
||
| #[test] | ||
| fn test_cannot_reach_block_through_wall_when_y_is_negative() { | ||
| let mut partial_world = PartialInstance::default(); | ||
| let mut world = ChunkStorage::default(); | ||
| partial_world | ||
| .chunks | ||
| .set(&ChunkPos { x: 0, z: 0 }, Some(Chunk::default()), &mut world); | ||
|
|
||
| let set_solid_block_at = |x, y, z| { | ||
| partial_world.chunks.set_block_state( | ||
| &BlockPos::new(x, y, z), | ||
| azalea_registry::Block::Stone.into(), | ||
| &world, | ||
| ); | ||
| }; | ||
|
|
||
| let y_offset = -8; | ||
|
|
||
| // walls | ||
| set_solid_block_at(1, y_offset, 0); | ||
| set_solid_block_at(1, y_offset + 1, 0); | ||
| set_solid_block_at(0, y_offset, 1); | ||
| set_solid_block_at(0, y_offset + 1, 1); | ||
| // target | ||
| set_solid_block_at(1, y_offset, 1); | ||
|
|
||
| let player_position = BlockPos::new(0, y_offset, 0); | ||
| let look_target = BlockPos::new(1, y_offset, 1); | ||
|
|
||
| assert!(!can_reach_block(&world, player_position, look_target)); | ||
| } | ||
| } |
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