shit

src/client/java/dev/tggamesyt/szar/client/mixin/RadiatedItemRendererMixin.java

@@ -0,0 +1,58 @@
+package dev.tggamesyt.szar.client.mixin;
+
+import net.minecraft.client.render.RenderLayer;
+import net.minecraft.client.render.VertexConsumer;
+import net.minecraft.client.render.VertexConsumerProvider;
+import net.minecraft.client.render.item.ItemRenderer;
+import net.minecraft.client.render.model.BakedModel;
+import net.minecraft.client.render.model.json.ModelTransformationMode;
+import net.minecraft.client.texture.SpriteAtlasTexture;
+import net.minecraft.client.util.math.MatrixStack;
+import net.minecraft.item.ItemStack;
+import org.joml.Matrix4f;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(ItemRenderer.class)
+public abstract class RadiatedItemRendererMixin {
+
+    @Inject(
+            method = "renderItem(Lnet/minecraft/item/ItemStack;Lnet/minecraft/client/render/model/json/ModelTransformationMode;ZLnet/minecraft/client/util/math/MatrixStack;Lnet/minecraft/client/render/VertexConsumerProvider;IILnet/minecraft/client/render/model/BakedModel;)V",
+            at = @At("TAIL")
+    )
+    private void renderRadiationPixel(ItemStack stack,
+                                      ModelTransformationMode mode,
+                                      boolean leftHanded,
+                                      MatrixStack matrices,
+                                      VertexConsumerProvider vertexConsumers,
+                                      int light,
+                                      int overlay,
+                                      BakedModel model,
+                                      CallbackInfo ci) {
+
+        if (!stack.hasNbt() || !stack.getNbt().getBoolean("Radiated")) return;
+
+        int x = Math.min(stack.getNbt().getInt("RadPixelX"), 15) / 2;
+        int y = Math.min(stack.getNbt().getInt("RadPixelY"), 15) / 2;
+
+        matrices.push();
+        Matrix4f matrix = matrices.peek().getPositionMatrix();
+
+        VertexConsumer vc = vertexConsumers.getBuffer(RenderLayer.getSolid()); // no atlas
+
+        float px = x / 16f;
+        float py = y / 16f;
+        float size = 1f / 16f;
+        float z = 0.01f;
+
+        // draw 1px green quad on top of item
+        vc.vertex(matrix, px, py, z).color(0f,1f,0f,1f).texture(0f,0f).overlay(overlay).light(light).normal(0f,0f,1f).next();
+        vc.vertex(matrix, px + size, py, z).color(0f,1f,0f,1f).texture(0f,0f).overlay(overlay).light(light).normal(0f,0f,1f).next();
+        vc.vertex(matrix, px + size, py + size, z).color(0f,1f,0f,1f).texture(0f,0f).overlay(overlay).light(light).normal(0f,0f,1f).next();
+        vc.vertex(matrix, px, py + size, z).color(0f,1f,0f,1f).texture(0f,0f).overlay(overlay).light(light).normal(0f,0f,1f).next();
+
+        matrices.pop();
+    }
+}

src/client/resources/szar.client.mixins.json

@@ -5,7 +5,8 @@
   "compatibilityLevel": "JAVA_17",
   "client": [
     "MouseMixin",
-    "RadiationHeartMixin"
+    "RadiationHeartMixin",
+    "RadiatedItemRendererMixin"
   ],
   "injectors": {
     "defaultRequire": 1