Finish 2D Camera

Author: cheyao

src/main/java/com/cyao/mixin/CameraMixin.java

@@ -3,6 +3,7 @@
 import net.minecraft.client.render.Camera;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.ModifyArg;
 import org.spongepowered.asm.mixin.injection.ModifyVariable;
 
 @Mixin(Camera.class)
@@ -12,8 +13,25 @@ public class CameraMixin {
 	private float setYaw(float yaw) {
 		return 0;
 	}
+
 	@ModifyVariable(method = "setRotation(FF)V", at = @At("HEAD"), ordinal = 1, argsOnly = true)
 	private float setPitch(float pitch) {
         return 0;
     }
+
+	// We set third person view to default so the player gets rendered
+	@ModifyVariable(method = "update(Lnet/minecraft/world/BlockView;Lnet/minecraft/entity/Entity;ZZF)V", at = @At("HEAD"), ordinal = 0, argsOnly = true)
+	protected boolean thirdPerson(boolean value) {
+		return true;
+	}
+
+	// Offset the camera a bit more
+	@ModifyArg(
+			method = "update(Lnet/minecraft/world/BlockView;Lnet/minecraft/entity/Entity;ZZF)V",
+			at = @At(value = "INVOKE", target = "Lnet/minecraft/client/render/Camera;moveBy(FFF)V"),
+			index = 0
+	)
+	protected float offsetCamera(float x) {
+		return x - 4.0f;
+	}
 }

src/main/java/com/cyao/mixin/GameOptionsMixin.java

@@ -0,0 +1,22 @@
+package com.cyao.mixin;
+
+import net.minecraft.client.option.GameOptions;
+import net.minecraft.client.option.Perspective;
+import org.objectweb.asm.Opcodes;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.ModifyVariable;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(GameOptions.class)
+public class GameOptionsMixin {
+    @ModifyVariable(method = "setPerspective", at = @At("HEAD"), ordinal = 0, argsOnly = true)
+    protected Perspective thirdPerson(Perspective value) {
+        return Perspective.THIRD_PERSON_BACK;
+    }
+
+    @Redirect(method = "getPerspective", at = @At(value = "FIELD", target = "Lnet/minecraft/client/option/GameOptions;perspective:Lnet/minecraft/client/option/Perspective;", opcode = Opcodes.GETFIELD))
+    private Perspective injected(GameOptions instance) {
+        return Perspective.THIRD_PERSON_BACK;
+    }
+}

src/main/java/com/cyao/mixin/HUDMixin.java

@@ -0,0 +1,8 @@
+package com.cyao.mixin;
+
+import net.minecraft.client.gui.hud.InGameHud;
+import org.spongepowered.asm.mixin.Mixin;
+
+@Mixin(InGameHud.class)
+public class HUDMixin {
+}

src/main/resources/2d-minecraft.mixins.json

@@ -3,7 +3,9 @@
 	"package": "com.cyao.mixin",
 	"compatibilityLevel": "JAVA_21",
 	"mixins": [
-      "CameraMixin"
+        "CameraMixin",
+		"GameOptionsMixin",
+		"HUDMixin"
 	],
 	"injectors": {
 		"defaultRequire": 1