event.load("item_air_click");
event.load("left_click_air");
event.load("block_break");

default_state = block.newState("minecraft:stone");
block_state = default_state;
air_state = block.newState("minecraft:air");
radius_per_player = map.new();
state_per_player = map.new();

msg("dev", "§bVoxel §rloaded.");
@wait
wait();
if(!perm.has(player, "voxel")) {
	goto("wait");
}
if(event == "left_click_air" || event == "block_break") {
	state = air_state;
	last = false;
} elseif(event == "item_air_click") {
	state = map.getOrDefault(state_per_player, player.getUuid(player), default_state);
	block_state = state;
	last = true;
} else {
	goto("wait");
}
if(item.getType(living.getEquip(player, "hand")) == "km:plus_green") {
	goto("doshit");
}
if(item.getType(living.getEquip(player, "hand")) == "km:minus_green") {
	goto("dosmooth");
}
goto("wait");

@doshit
loc = entity.getLocation(player);
world = loc.getWorld(loc);
look = entity.getLook(player);
loc.setX(loc, loc.getCoord(loc, "bx"));
loc.setY(loc, loc.getCoord(loc, "by") + 1);
loc.setZ(loc, loc.getCoord(loc, "bz"));
list = list.new();

radius = map.getOrDefault(radius_per_player, player.getUuid(player), 5);
for(y = -radius; y <= radius; y += 0.5) {
	for(x = -radius; x <= radius; x += 0.5) {
		other_loc = loc.mod(loc, x, y, 0);
		if(loc.distance(loc, other_loc) < radius) {
			list.add(list, other_loc);
		}
	}
}

yaw = loc.getYaw(loc);
pitch = loc.getPitch(loc);
while(yaw < 0) {
	yaw += 360;
}
while(yaw >= 360) {
	yaw -= 360;
}
yaw = yaw * math.pi() / 180;
pitch = pitch * math.pi() / 180;
matrix = matrix.newRotationY(-yaw);
matrix = matrix.mul(matrix, matrix.newRotationX(-pitch));
list2 = list.new();
vector = vector.new(0, 0, 0);
iter = list.iterator(list);
while(hasNext(iter)) {
	other_loc = next(iter);
	vector.set(vector, loc.getX(other_loc) - loc.getX(loc), loc.getY(other_loc) - loc.getY(loc), loc.getZ(other_loc) - loc.getZ(loc));
	matrix.mulVector(matrix, vector);
	loc.set(other_loc, loc.getX(loc) + vector.getX(vector), loc.getY(loc) + vector.getY(vector), loc.getZ(loc) + vector.getZ(vector));
	check = loc.trace(other_loc, look[0], look[1], look[2], 60, last);
	if(check) {
		list.add(list2, other_loc);
	}
}
list = list2;

iter = list.iterator(list);
while(hasNext(iter)) {
	block.setState(next(iter), state, true);
}

lowest_x = 5000000;
lowest_y = 5000000;
lowest_z = 5000000;
highest_x = -5000000;
highest_y = -5000000;
highest_z = -5000000;
iter = list.iterator(list);
while(hasNext(iter)) {
	set_loc = next(iter);
	x = loc.getX(set_loc);
	y = loc.getY(set_loc);
	z = loc.getZ(set_loc);
	lowest_x = math.min(x, lowest_x);
	lowest_y = math.min(y, lowest_y);
	lowest_z = math.min(z, lowest_z);
	highest_x = math.max(x, highest_x);
	highest_y = math.max(y, highest_y);
	highest_z = math.max(z, highest_z);
}
lowest_x--;
lowest_y--;
lowest_z--;
highest_x++;
highest_y++;
highest_z++;

for(k = 0; k < 5; k++) {
	iter = loc.iterator(world, lowest_x, lowest_y, lowest_z, highest_x, highest_y, highest_z);
	while(hasNext(iter)) {
		smooth_loc = next(iter);
		//neighbours includes the original block
		neighbours = 19 - block.countAir(smooth_loc);
		if(neighbours <= 8) {
			block.setState(smooth_loc, air_state, true);
		} elseif(neighbours >= 12) {
			block.setState(smooth_loc, block_state, true);
		}
	}
}
goto("wait");

@dosmooth
loc = entity.getLocation(player);
world = loc.getWorld(loc);
look = entity.getLook(player);
loc.setX(loc, loc.getCoord(loc, "bx"));
loc.setY(loc, loc.getCoord(loc, "by") + 1);
loc.setZ(loc, loc.getCoord(loc, "bz"));
list = list.new();

radius = map.getOrDefault(radius_per_player, player.getUuid(player), 5);
for(y = -radius; y <= radius; y += 0.5) {
	for(x = -radius; x <= radius; x += 0.5) {
		other_loc = loc.mod(loc, x, y, 0);
		if(loc.distance(loc, other_loc) < radius) {
			list.add(list, other_loc);
		}
	}
}

yaw = loc.getYaw(loc);
pitch = loc.getPitch(loc);
while(yaw < 0) {
	yaw += 360;
}
while(yaw >= 360) {
	yaw -= 360;
}
yaw = yaw * math.pi() / 180;
pitch = pitch * math.pi() / 180;
matrix = matrix.newRotationY(-yaw);
matrix = matrix.mul(matrix, matrix.newRotationX(-pitch));
list2 = list.new();
vector = vector.new(0, 0, 0);
iter = list.iterator(list);
while(hasNext(iter)) {
	other_loc = next(iter);
	vector.set(vector, loc.getX(other_loc) - loc.getX(loc), loc.getY(other_loc) - loc.getY(loc), loc.getZ(other_loc) - loc.getZ(loc));
	matrix.mulVector(matrix, vector);
	loc.set(other_loc, loc.getX(loc) + vector.getX(vector), loc.getY(loc) + vector.getY(vector), loc.getZ(loc) + vector.getZ(vector));
	check = loc.trace(other_loc, look[0], look[1], look[2], 60, last);
	if(check) {
		list.add(list2, other_loc);
	}
}
list = list2;

lowest_x = 5000000;
lowest_y = 5000000;
lowest_z = 5000000;
highest_x = -5000000;
highest_y = -5000000;
highest_z = -5000000;
iter = list.iterator(list);
while(hasNext(iter)) {
	set_loc = next(iter);
	x = loc.getX(set_loc);
	y = loc.getY(set_loc);
	z = loc.getZ(set_loc);
	lowest_x = math.min(x, lowest_x);
	lowest_y = math.min(y, lowest_y);
	lowest_z = math.min(z, lowest_z);
	highest_x = math.max(x, highest_x);
	highest_y = math.max(y, highest_y);
	highest_z = math.max(z, highest_z);
}
lowest_x--;
lowest_y--;
lowest_z--;
highest_x++;
highest_y++;
highest_z++;

for(k = 0; k < 5; k++) {
	iter = loc.iterator(world, lowest_x, lowest_y, lowest_z, highest_x, highest_y, highest_z);
	while(hasNext(iter)) {
		smooth_loc = next(iter);
		//neighbours includes the original block
		neighbours = 19 - block.countAir(smooth_loc);
		if(neighbours <= 9) {
			block.setState(smooth_loc, air_state, true);
		} elseif(neighbours >= 11) {
			block.setState(smooth_loc, block_state, true);
		}
	}
}
goto("wait");