[1.7.10][and newer]How to get the speed part pushed by water?

[D0431791]

Entities can be pushed by water.

How to get the speed part pushed by water?

 

The code is expected as below:

public static Vec3 getSpeedPartByWater(Eneity x){
Vec3 y=㊣㊣㊣㊣㊣;
㊣㊣㊣㊣㊣
㊣㊣㊣㊣㊣
㊣㊣㊣㊣㊣
return y;
}

 

example : make a player move 2x in water

Vec3 playerSpeedPartByWater=getSpeedPartByWater(player);
player.moveEntity(player.motionX-playerSpeedPartByWater.xCoord , player.motionY-playerSpeedPartByWater.yCoord, player.motionZ-playerSpeedPartByWater.zCoord);

[coolAlias]

The method that handles water acceleration is in the World class and is called #handleMaterialAcceleration.

 

If you determine the player is in water, you can do some math to reverse it and then reapply it, or you could probably get by with a simple player.motionX/Y/Z *= 2.

 

If you don't want the player to get pushed at all, you can make a method to reverse the applied motion.

[D0431791]

The method that handles water acceleration is in the World class and is called #handleMaterialAcceleration.

 

If you determine the player is in water, you can do some math to reverse it and then reapply it, or you could probably get by with a simple player.motionX/Y/Z *= 2.

 

If you don't want the player to get pushed at all, you can make a method to reverse the applied motion.

 

Now I can see the effect.

The code looks like this now:

public static Vec3 getSpeedPartByWater(Entity x,World xworld){
	Vec3 y=Vec3.createVectorHelper(0d,0d,0d);
	AxisAlignedBB zaabb=x.boundingBox.expand(0d,-0.40234375,0d).contract(0.001D, 0.001D, 0.001D);
	int i1=(int)Math.floor(zaabb.minX);
	int i2=(int)Math.floor(zaabb.maxX)+1;
	int j1=(int)Math.floor(zaabb.minY);
	int j2=(int)Math.floor(zaabb.maxY)+1;
	int k1=(int)Math.floor(zaabb.minZ);
	int k2=(int)Math.floor(zaabb.maxZ)+1;
	if (!xworld.checkChunksExist(i1,j1,k1,i2,j2,k2)) {return y;}
	int i,j,k;
	Block zblock=null;
	for(i=i1;i<i2;i++){
		for(j=j1;j<j2;j++){
			for(k=k1;k<k2;k++){
				zblock=xworld.getBlock(i,j,k);
				if(zblock==null){continue;}
				if(zblock.getMaterial()!=Material.water){continue;}
				if(j2<j+1-BlockLiquid.getLiquidHeightPercent(xworld.getBlockMetadata(i,j,k))){continue;}
				zblock.velocityToAddToEntity(xworld,i,j,k,x,y);
			}
		}
	}
	if(y.lengthVector()>0&&x.isPushedByWater()) {
		y=y.normalize();
		y.xCoord=x.motionX*0.15+y.xCoord*0.0119;
		y.yCoord=x.motionY*0.15+y.yCoord*0.0119;
		y.zCoord=x.motionZ*0.15+y.zCoord*0.0119;
	}
	return y;
}