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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| package wdl; | ||
|
|
||
| import net.minecraft.entity.Entity; | ||
| import wdl.api.IEntityEditor; | ||
| import wdl.api.IWDLMod; | ||
| import wdl.api.IWDLModDescripted; | ||
|
|
||
| /** | ||
| * Realigns entities to their serverside positions, to mitigate entity drift. | ||
| * This is necessary for entities that move clientside, most importantly boats | ||
| * (example: http://i.imgur.com/3QQchZL.gifv). | ||
| * <br/> | ||
| * This is also an example of how an {@link IWDLMod} would be implemented. | ||
| */ | ||
| public class EntityRealigner implements IEntityEditor, IWDLModDescripted { | ||
| @Override | ||
| public boolean isValidEnvironment(String version) { | ||
| return true; | ||
| } | ||
|
|
||
| @Override | ||
| public String getEnvironmentErrorMessage(String version) { | ||
| return null; | ||
| } | ||
|
|
||
| @Override | ||
| public String getDisplayName() { | ||
| return "Entity realigner"; | ||
| } | ||
|
|
||
| @Override | ||
| public String getMainAuthor() { | ||
| return "Pokechu22"; | ||
| } | ||
|
|
||
| @Override | ||
| public String[] getAuthors() { | ||
| return null; | ||
| } | ||
|
|
||
| @Override | ||
| public String getURL() { | ||
| return null; | ||
| } | ||
|
|
||
| @Override | ||
| public String getDescription() { | ||
| return "Realigns entities to their serverside position to deal with " + | ||
| "entities that drift clientside (for example, boats)."; | ||
| } | ||
|
|
||
| @Override | ||
| public boolean shouldEdit(Entity e) { | ||
| // We make sure that at least one of serverPosX, y, and | ||
| // z is not 0 because an entity with a server pos of 0, | ||
| // 0, 0 probably has a different way of setting up its | ||
| // position (for example, paintings). | ||
| // No sane entity will be at 0, 0, 0. And moving them | ||
| // to it can effectively delete entities - see | ||
| // https://github.com/uyjulian/LiteModWDL/issues/4. | ||
| // (I also think this is the cause for the "world going | ||
| // invisible" issue). | ||
| return e.serverPosX != 0 || e.serverPosY != 0 || e.serverPosZ != 0; | ||
| } | ||
|
|
||
| @Override | ||
| public void editEntity(Entity e) { | ||
| System.out.println("Realigning " + e); | ||
| e.posX = convertServerPos(e.serverPosX); | ||
| e.posY = convertServerPos(e.serverPosY); | ||
| e.posZ = convertServerPos(e.serverPosZ); | ||
| System.out.println("Realigned " + e); | ||
| } | ||
|
|
||
| /** | ||
| * Converts a position from the fixed-point version that a packet | ||
| * (or {@link Entity#serverPosX} and the like use) into a double. | ||
| * | ||
| * @see | ||
| * <a href="http://wiki.vg/Protocol#Fixed-point_numbers"> | ||
| * wiki.vg on Fixed-point numbers</a> | ||
| * | ||
| * @param serverPos | ||
| * @return The double version of the position. | ||
| */ | ||
| private static double convertServerPos(int serverPos) { | ||
| return serverPos / 32.0; | ||
| } | ||
| } |
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