Initial commit.

.gitignore

@@ -0,0 +1,4 @@
+/.classpath
+/.project
+/.settings
+/bin

src/mcdisablewheel/DisableMouseWheel.java

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+package mcdisablewheel;
+
+import static javassist.bytecode.Opcode.INVOKESTATIC;
+import static javassist.bytecode.Opcode.ICONST_0;
+import java.io.IOException;
+
+import com.pclewis.mcpatcher.BytecodePatch;
+import com.pclewis.mcpatcher.BytecodeSignature;
+import com.pclewis.mcpatcher.ClassMod;
+import com.pclewis.mcpatcher.MethodRef;
+import com.pclewis.mcpatcher.Mod;
+
+public final class DisableMouseWheel extends Mod {
+    public DisableMouseWheel() {
+        name = "Disable Mouse Wheel";
+        author = "stephan@kochen.nl";
+        description = "Disables the mouse wheel for inventory scrolling";
+        version = "0.1";
+
+        classMods.add(new MinecraftMod());
+    }
+
+    private final class MinecraftMod extends ClassMod {
+        public MinecraftMod() {
+            // Find the main tick handling method.
+            MethodRef runTick = new MethodRef(getDeobfClass(), "runTick", "()V");
+            classSignatures.add(new BytecodeSignature() {
+                @Override
+                public String getMatchExpression() {
+                    return buildExpression(
+                        push("animateTick")
+                    );
+                }
+            }.setMethod(runTick));
+
+            // Patch the mouse event handling.
+            patches.add(new BytecodePatch() {
+                @Override
+                public String getDescription() {
+                    return "disable mouse wheel";
+                }
+
+                @Override
+                public String getMatchExpression() {
+                    // Find the call to Mouse.getEventDWheel().
+                    return buildExpression(
+                        reference(INVOKESTATIC, new MethodRef("org/lwjgl/input/Mouse", "getEventDWheel", "()I"))
+                    );
+                }
+
+                @Override
+                public byte[] getReplacementBytes() throws IOException {
+                    // Simply replace it by 0.
+                    return buildCode(
+                        ICONST_0
+                    );
+                }
+            }.targetMethod(runTick));
+        }
+    }
+}