From 02d985bafc4bfb07f9422536ded3a7f04a9e35ef Mon Sep 17 00:00:00 2001
From: gnembon <gnembonmc@gmail.com>
Date: Sat, 18 Jul 2020 17:02:43 -0300
Subject: [PATCH] added doublesided

---
 docs/scarpet/api/Auxiliary.md                 |  1 +
 .../carpet/script/utils/ShapeDispatcher.java  | 29 +++++++++++++++++++
 .../carpet/script/utils/ShapesRenderer.java   |  6 ++++
 3 files changed, 36 insertions(+)

diff --git a/docs/scarpet/api/Auxiliary.md b/docs/scarpet/api/Auxiliary.md
index 2d3d88c4..e28fc2a9 100644
--- a/docs/scarpet/api/Auxiliary.md
+++ b/docs/scarpet/api/Auxiliary.md
@@ -96,6 +96,7 @@ Available shapes:
      * `size` - float. Default font size is 10.
      * `facing` - text direction, where its facing. Possible options are: `player` (default, text
      always rotates to face the player), `north`, `south`, `east`, `west`, `up`, `down`
+     * `doublesided` - if `true` it will make the text visible from the back as well. Default is `false`
      * `align` - text alignment with regards to `pos`. Default is `center` (displayed text is
      centered with respect to `pos`), `left` (`pos` indicates beginning of text), and `right` (`pos`
      indicates the end of text).
diff --git a/src/main/java/carpet/script/utils/ShapeDispatcher.java b/src/main/java/carpet/script/utils/ShapeDispatcher.java
index 2d3aa29d..f5df01df 100644
--- a/src/main/java/carpet/script/utils/ShapeDispatcher.java
+++ b/src/main/java/carpet/script/utils/ShapeDispatcher.java
@@ -20,6 +20,7 @@ import com.mojang.brigadier.StringReader;
 import com.mojang.brigadier.exceptions.CommandSyntaxException;
 import net.minecraft.command.arguments.ParticleArgumentType;
 import net.minecraft.entity.Entity;
+import net.minecraft.nbt.ByteTag;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.DoubleTag;
 import net.minecraft.nbt.FloatTag;
@@ -403,6 +404,7 @@ public class ShapeDispatcher
                 put("align", new StringValue("center")).
                 put("size", new NumericValue(10)).
                 put("value", Value.NULL).
+                put("doublesided", new NumericValue(0)).
                 build();
         @Override
         protected Set<String> requiredParams() { return Sets.union(super.requiredParams(), required); }
@@ -423,6 +425,7 @@ public class ShapeDispatcher
         int align;
         float height;
         String value;
+        boolean doublesided;
 
         @Override
         protected void init(Map<String, Value> options)
@@ -457,6 +460,11 @@ public class ShapeDispatcher
                 else
                     align = -1;
             }
+            doublesided = false;
+            if (options.containsKey("doublesided"))
+            {
+                doublesided = options.get("doublesided").getBoolean();
+            }
 
             raise = NumericValue.asNumber(options.getOrDefault("raise", optional.get("raise"))).getFloat();
             tilt = NumericValue.asNumber(options.getOrDefault("tilt", optional.get("tilt"))).getFloat();
@@ -496,6 +504,7 @@ public class ShapeDispatcher
             hash ^= Float.hashCode(height); hash *= 1099511628211L;
             hash ^= Float.hashCode(size); hash *= 1099511628211L;
             hash ^= Integer.hashCode(align); hash *= 1099511628211L;
+            hash ^= Boolean.hashCode(doublesided); hash *= 1099511628211L;
 
             return hash;
         }
@@ -842,6 +851,7 @@ public class ShapeDispatcher
             put("raise", new FloatParam("raise"));
             put("tilt", new FloatParam("tilt"));
             put("facing", new StringChoiceParam("axis", "player", "north", "south", "east", "west", "up", "down"));
+            put("doublesided", new BoolParam("doublesided"));
 
         }};
         protected String id;
@@ -948,6 +958,25 @@ public class ShapeDispatcher
             return value;
         }
     }
+    public static class BoolParam extends NumericParam
+    {
+        protected BoolParam(String id)
+        {
+            super(id);
+        }
+
+        @Override
+        public Tag toTag(Value value)
+        {
+            return ByteTag.of(value.getBoolean());
+        }
+
+        @Override
+        public Value decode(Tag tag)
+        {
+            return new NumericValue(((ByteTag) tag).getByte() > 0);
+        }
+    }
     public static class FloatParam extends NumericParam
     {
         protected FloatParam(String id) { super(id); }
diff --git a/src/main/java/carpet/script/utils/ShapesRenderer.java b/src/main/java/carpet/script/utils/ShapesRenderer.java
index 9382c269..523f8b46 100644
--- a/src/main/java/carpet/script/utils/ShapesRenderer.java
+++ b/src/main/java/carpet/script/utils/ShapesRenderer.java
@@ -206,6 +206,10 @@ public class ShapesRenderer
             double d = camera1.getPos().x;
             double e = camera1.getPos().y;
             double f = camera1.getPos().z;
+            if (shape.doublesided)
+                RenderSystem.disableCull();
+            else
+                RenderSystem.enableCull();
             RenderSystem.pushMatrix();
             RenderSystem.translatef((float)(v1.x - d), (float)(v1.y - e), (float)(v1.z - f));
             RenderSystem.normal3f(0.0F, 1.0F, 0.0F);
@@ -259,6 +263,8 @@ public class ShapesRenderer
             textRenderer.draw(shape.value, text_x, 0.0F, shape.textcolor, false, Rotation3.identity().getMatrix(), immediate, false, shape.textbck, 15728880);
             immediate.draw();
             RenderSystem.popMatrix();
+            if (shape.doublesided)
+                RenderSystem.enableCull();
         }
     }