Implement jumpClimbing + rmbClear

Kudos to Climbable (MIT) for jumpClimbing: https://github.com/Blue-Beaker/climbable-mc/blob/405db8ad8b8d7b7625e8aea640886f11be3d5584/src/main/java/io/bluebeaker/climbable/mixin/MixinEntityLivingBase.java

Kudos to Fabrication (MIT) for rmbClear: https://github.com/FalsehoodMC/Fabrication/blob/ecc8f510fa431f88485037babd8ebf01a875de24/src/main/java/com/unascribed/fabrication/mixin/b_utility/rmb_clears_text_fields/MixinTextFieldWidget.java

Signed-off-by: unilock <unilock@fennet.rentals>

src/main/java/cc/unilock/legacyfixes/LegacyFixes.java

@@ -0,0 +1,19 @@
+package cc.unilock.legacyfixes;
+
+import cc.unilock.legacyfixes.proxy.CommonProxy;
+import cpw.mods.fml.common.Mod;
+import cpw.mods.fml.common.SidedProxy;
+import cpw.mods.fml.common.event.FMLPreInitializationEvent;
+
+@Mod(modid = Tags.MODID, version = Tags.VERSION, name = Tags.MODNAME, acceptedMinecraftVersions = "[1.7.10]")
+public class LegacyFixes {
+    //public static final Logger LOGGER = LogManager.getLogger(Tags.MODID);
+
+    @SidedProxy(clientSide = "cc.unilock.legacyfixes.proxy.ClientProxy", serverSide = "cc.unilock.legacyfixes.proxy.CommonProxy")
+    public static CommonProxy proxy;
+
+    @Mod.EventHandler
+    public void preInit(FMLPreInitializationEvent event) {
+        proxy.preInit(event);
+    }
+}

src/main/java/cc/unilock/legacyfixes/LegacyFixesConfig.java

@@ -0,0 +1,21 @@
+package cc.unilock.legacyfixes;
+
+import net.minecraftforge.common.config.Configuration;
+
+import java.io.File;
+
+public class LegacyFixesConfig {
+    public static boolean jumpClimbing = true;
+    public static boolean rmbClear = true;
+
+    public static void synchronizeConfiguration(File configFile) {
+        Configuration configuration = new Configuration(configFile);
+
+        jumpClimbing = configuration.getBoolean("jumpClimbing", Configuration.CATEGORY_GENERAL, jumpClimbing, "Allows climbing ladders by jumping");
+        rmbClear = configuration.getBoolean("rmbClear", Configuration.CATEGORY_GENERAL, rmbClear, "Allows clearing text fields by right-clicking");
+
+        if (configuration.hasChanged()) {
+            configuration.save();
+        }
+    }
+}

src/main/java/cc/unilock/legacyfixes/mixin/EntityLivingBaseAccessor.java

@@ -0,0 +1,11 @@
+package cc.unilock.legacyfixes.mixin;
+
+import net.minecraft.entity.EntityLivingBase;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.gen.Accessor;
+
+@Mixin(EntityLivingBase.class)
+public interface EntityLivingBaseAccessor {
+    @Accessor
+    boolean getIsJumping();
+}

src/main/java/cc/unilock/legacyfixes/mixin/EntityLivingBaseMixin.java

@@ -0,0 +1,16 @@
+package cc.unilock.legacyfixes.mixin;
+
+import cc.unilock.legacyfixes.LegacyFixesConfig;
+import net.minecraft.entity.EntityLivingBase;
+import org.objectweb.asm.Opcodes;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(EntityLivingBase.class)
+public class EntityLivingBaseMixin {
+    @Redirect(method = "Lnet/minecraft/entity/EntityLivingBase;moveEntityWithHeading(FF)V", at = @At(value = "FIELD", target = "Lnet/minecraft/entity/EntityLivingBase;isCollidedHorizontally:Z", opcode = Opcodes.GETFIELD, ordinal = 2))
+    private boolean isCollidedHorizontally(EntityLivingBase instance) {
+        return instance.isCollidedHorizontally || ((EntityLivingBaseAccessor) instance).getIsJumping() && LegacyFixesConfig.jumpClimbing;
+    }
+}

src/main/java/cc/unilock/legacyfixes/mixin/client/GuiTextFieldMixin.java

@@ -0,0 +1,41 @@
+package cc.unilock.legacyfixes.mixin.client;
+
+import cc.unilock.legacyfixes.LegacyFixesConfig;
+import net.minecraft.client.gui.GuiTextField;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(GuiTextField.class)
+public abstract class GuiTextFieldMixin {
+    @Shadow
+    public int xPosition;
+    @Shadow
+    public int yPosition;
+    @Shadow
+    public int width;
+    @Shadow
+    public int height;
+    @Shadow
+    private boolean canLoseFocus;
+    @Shadow
+    private boolean isFocused;
+    @Shadow
+    private boolean isEnabled;
+    @Shadow
+    private boolean visible;
+
+    @Shadow
+    public abstract void setText(String text);
+
+    @Inject(method = "Lnet/minecraft/client/gui/GuiTextField;mouseClicked(III)V", at = @At(value = "HEAD"), cancellable = true)
+    private void mouseClicked(int mouseX, int mouseY, int button, CallbackInfo ci) {
+        if (!LegacyFixesConfig.rmbClear) return;
+        if (button == 1 && this.visible && this.isEnabled && (this.isFocused || this.canLoseFocus) && (mouseX >= this.xPosition && mouseX < this.xPosition + this.width && mouseY >= this.yPosition && mouseY < this.yPosition + this.height)) {
+            this.setText("");
+            ci.cancel();
+        }
+    }
+}

src/main/java/cc/unilock/legacyfixes/proxy/ClientProxy.java

@@ -0,0 +1,10 @@
+package cc.unilock.legacyfixes.proxy;
+
+import cpw.mods.fml.common.event.FMLPreInitializationEvent;
+
+public class ClientProxy extends CommonProxy {
+    @Override
+    public void preInit(FMLPreInitializationEvent event) {
+        super.preInit(event);
+    }
+}

src/main/java/cc/unilock/legacyfixes/proxy/CommonProxy.java

@@ -0,0 +1,11 @@
+package cc.unilock.legacyfixes.proxy;
+
+import cc.unilock.legacyfixes.LegacyFixesConfig;
+import cpw.mods.fml.common.event.FMLPreInitializationEvent;
+
+public class CommonProxy {
+    public void preInit(FMLPreInitializationEvent event) {
+        LegacyFixesConfig.synchronizeConfiguration(event.getSuggestedConfigurationFile());
+        //LegacyFixes.LOGGER.info("Initialized!");
+    }
+}

src/main/resources/mixins.legacyfixes.json

@@ -5,7 +5,12 @@
   "refmap": "mixins.legacyfixes.refmap.json",
   "target": "@env(DEFAULT)",
   "compatibilityLevel": "JAVA_8",
-  "mixins": [],
-  "client": [],
+  "mixins": [
+    "EntityLivingBaseAccessor",
+    "EntityLivingBaseMixin"
+  ],
+  "client": [
+    "client.GuiTextFieldMixin"
+  ],
   "server": []
 }