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41 lines
2 KiB
Markdown
41 lines
2 KiB
Markdown
# lillero
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*don't do coremods*
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A simple and slim ASM patching framework, allowing to modify block game code.
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## How
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This library provides the core interface: `IInjector`. All patches which implement this interface and are defined as services will be loaded and applied at startup.
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Some methods must be implemented, specifying which class and method will be patched:
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* `targetClass()` : returns full name of class to patch (such as `net.minecraft.client.Minecraft`)
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* `methodName()` : returns name (Searge obfuscated) of method to patch
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* `methodDesc()` : returns descriptor (arguments and return type) of method to patch
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* `inject(ClassNode clazz, MethodNode method)` : will be invoked providing correct class and method. This is where the actual patching happens
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Some extra methods should also be implemented to help identify your patch:
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* `name()` : returns patch name
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* `reason()` : returns patch description
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To make your classes service providers, a simple text file should be defined under `src/main/resources/META-INF/services` in your mod project: `ftbsc.lll.IInjector`. Inside such file, put full class paths of your patches.
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To load patches created with this library, a Launch Plugin loader is necessary (such as our [lillero-loader](https://git.fantabos.co/lillero-loader/))
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### Example
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```java
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// file src/main/java/example/patches/SamplePatch.java
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package example.patches;
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import ftbsc.lll.IInjector;
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public class SamplePatch implements IInjector {
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public String name() { return "SamplePatch"; }
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public String targetClass() { return "net.minecraft.client.Minecraft"; }
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public String methodName() { return "func_71407_l"; } // tick()
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public String methodDesc() { return "()V"; }
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public void inject(ClassNode clazz, MethodNode main) {
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InsnList insnList = new InsnList();
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insnList.add(new InsnNode(POP));
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main.instructions.insert(insnList);
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}
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}
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// file src/main/resources/META-INF/services/ftbsc.lll.IInjector
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example.patches.SamplePatch
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```
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