Add custom portal colors

src/main/java/knightminer/inspirations/common/Config.java

@@ -246,6 +246,7 @@ public class Config {
 	public static short milkCooldownTime = 600;
 	public static boolean caveSpiderDrops = true;
 	public static boolean skeletonSkull = true;
+	public static boolean customPortalColor = true;
 	// heartbeet
 	public static boolean enableHeartbeet = true;
 	public static boolean brewHeartbeet = true;
@@ -527,6 +528,8 @@ public static void preInit(FMLPreInitializationEvent event) {
 			milkCooldown = configFile.getBoolean("milkCooldown", "tweaks", milkCooldown, "Adds a cooldown to milking cows, prevents practically infinite milk in modded worlds where milk is more useful.");
 			milkCooldownTime = (short)configFile.getInt("time", "tweaks.milkCooldown", milkCooldownTime, 1, Short.MAX_VALUE, "Delay in seconds after milking a cow before it can be milked again.");
 
+			// custom portal color
+			customPortalColor = configFile.getBoolean("customPortalColor", "tweaks", customPortalColor, "Allows the portal color to be changed by placing colored blocks under the portal. Any block that tints a beacon beam will work for the color.");
 		}
 
 		// compatibility

src/main/java/knightminer/inspirations/library/Util.java

@@ -22,6 +22,7 @@
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
+import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import java.util.Arrays;
 import java.util.List;
@@ -157,6 +158,17 @@ public static float[] getColorComponents(int color) {
 		return new float[] {i / 255.0f, j / 255.0f, k / 255.0f};
 	}
 
+	/**
+	 * Splits a hex color integer into three float color components between 0 and 1
+	 * @param component  float color component array, must be length 3
+	 * @return  Color integer value
+	 */
+	public static int getColorInteger(@Nonnull float[] component) {
+		return ((int)(component[0] * 255) & 0xFF) << 16
+					 | ((int)(component[1] * 255) & 0xFF) << 8
+					 | ((int)(component[2] * 255) & 0xFF);
+	}
+
 	/**
 	 * Adds the tooltips for the potion type into the given string list
 	 * @param potionType  Potion type input

src/main/java/knightminer/inspirations/tweaks/TweaksClientProxy.java

@@ -1,18 +1,17 @@
 package knightminer.inspirations.tweaks;
 
-import java.util.LinkedHashMap;
-
 import com.google.common.collect.Maps;
-
 import knightminer.inspirations.common.ClientProxy;
 import knightminer.inspirations.common.Config;
 import knightminer.inspirations.common.PulseBase;
 import knightminer.inspirations.library.Util;
 import knightminer.inspirations.library.client.ClientUtil;
+import knightminer.inspirations.library.client.NameStateMapper;
 import knightminer.inspirations.library.client.PropertyStateMapper;
 import knightminer.inspirations.recipes.RecipesClientProxy;
 import knightminer.inspirations.tweaks.block.BlockBetterFlowerPot;
 import knightminer.inspirations.tweaks.block.BlockFittedCarpet;
+import knightminer.inspirations.tweaks.client.PortalColorHandler;
 import net.minecraft.block.BlockCarpet;
 import net.minecraft.block.properties.IProperty;
 import net.minecraft.block.state.IBlockState;
@@ -37,12 +36,15 @@
 import net.minecraftforge.client.event.ModelRegistryEvent;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 
+import java.util.LinkedHashMap;
+
 public class TweaksClientProxy extends ClientProxy {
 
 	private static final ResourceLocation CARPET_MODEL = Util.getResource("carpet");
 	private static final ResourceLocation CAULDRON_ITEM_MODEL = Util.getResource("cauldron_item");
 	private static final ResourceLocation ENCHANTED_BOOK = Util.getResource("enchanted_book");
 	private static final ResourceLocation FIREWORKS = Util.getResource("fireworks");
+	private static final ResourceLocation PORTAL = Util.getResource("portal");
 	private static final ModelResourceLocation FLOWER_POT_MODEL = new ModelResourceLocation(Util.getResource("flower_pot"), "normal");
 
 	@SubscribeEvent
@@ -52,6 +54,9 @@ public void registerModels(ModelRegistryEvent event) {
 				BlockFittedCarpet.NORTHWEST, BlockFittedCarpet.NORTHEAST, BlockFittedCarpet.SOUTHWEST, BlockFittedCarpet.SOUTHEAST
 				));
 		setModelStateMapper(InspirationsTweaks.flowerPot, new FlowerPotStateMapper());
+		if (Config.customPortalColor) {
+			setModelStateMapper(Blocks.PORTAL, new NameStateMapper(PORTAL));
+		}
 
 		registerItemModel(InspirationsTweaks.cactusSeeds);
 		registerItemModel(InspirationsTweaks.carrotSeeds);
@@ -94,6 +99,11 @@ public void registerBlockColors(ColorHandlerEvent.Block event) {
 			}, Blocks.FLOWER_POT);
 		}
 
+		// portal tinting
+		if (Config.customPortalColor) {
+			registerBlockColors(colors, new PortalColorHandler(), Blocks.PORTAL);
+		}
+
 		// coloring on sugar cane crop to match reeds
 		registerBlockColors(colors, (state, world, pos, index) -> {
 			if(world == null || pos == null) {

src/main/java/knightminer/inspirations/tweaks/client/PortalColorHandler.java

@@ -0,0 +1,87 @@
+package knightminer.inspirations.tweaks.client;
+
+import knightminer.inspirations.Inspirations;
+import knightminer.inspirations.library.Util;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockStainedGlass;
+import net.minecraft.block.BlockStainedGlassPane;
+import net.minecraft.block.state.IBlockState;
+import net.minecraft.client.renderer.color.IBlockColor;
+import net.minecraft.init.Blocks;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.ChunkCache;
+import net.minecraft.world.IBlockAccess;
+import net.minecraft.world.World;
+
+import javax.annotation.Nullable;
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * Logic to handle getting the color for a portal from stained glass below
+ */
+public class PortalColorHandler implements IBlockColor {
+  private static final int DEFAULT_COLOR = 0x9928FF;
+  private static final Set<Block> BEACON_COLOR_BLACKLIST = new HashSet<>();
+
+  @Override
+  public int colorMultiplier(IBlockState state, @Nullable IBlockAccess world, @Nullable BlockPos pos, int tintIndex) {
+    if (world == null || pos == null) {
+      return DEFAULT_COLOR;
+    }
+
+    // iterate down until the first non-portal block
+    // can skip every other block as it takes at least 2 from a portal to below a portal
+    pos = pos.down(2);
+    IBlockState colorState = world.getBlockState(pos);
+    Block block = colorState.getBlock();
+    while(block == Blocks.PORTAL || block == Blocks.OBSIDIAN) {
+      // update iterator
+      pos = pos.down(block == Blocks.PORTAL ? 2 : 1);
+      colorState = world.getBlockState(pos);
+      block = colorState.getBlock();
+    }
+
+    return getColorValue(world, pos);
+  }
+
+  /**
+   * Gets the color for a block in the world, uses the same logic as beacon beam colors
+   * @param access  Block access
+   * @param pos     Block pos
+   * @return
+   */
+  private static int getColorValue(IBlockAccess access, BlockPos pos) {
+    IBlockState state = access.getBlockState(pos);
+    Block block = state.getBlock();
+    // stained glass
+    if (block == Blocks.STAINED_GLASS) {
+      return state.getValue(BlockStainedGlass.COLOR).colorValue;
+    }
+    if (block == Blocks.STAINED_GLASS_PANE) {
+      return state.getValue(BlockStainedGlassPane.COLOR).colorValue;
+    }
+    // beacon color fallback
+    if (!BEACON_COLOR_BLACKLIST.contains(block)) {
+      World world = null;
+      if (access instanceof World) {
+        world = (World)access;
+      } else if (access instanceof ChunkCache) {
+        world = ((ChunkCache)access).world;
+      }
+      if (world != null) {
+        try {
+          float[] color = block.getBeaconColorMultiplier(state, world, pos, pos);
+          if (color != null && color.length == 3) {
+            return Util.getColorInteger(color);
+          }
+        } catch (ClassCastException e) {
+          Inspirations.log.error("Error getting beacon color for block", e);
+          BEACON_COLOR_BLACKLIST.add(block);
+        }
+      }
+    }
+
+    return DEFAULT_COLOR;
+  }
+}

src/main/resources/META-INF/inspirations_at.cfg

@@ -10,4 +10,7 @@ public net.minecraft.item.EnumDyeColor field_193351_w # colorValue
 public net.minecraft.tileentity.TileEntityBeacon field_146015_k # isComplete
 
 # Sheild enchantments
-public net.minecraft.entity.EntityLivingBase func_184583_d(Lnet/minecraft/util/DamageSource;)Z # canBlockDamageSource
+public net.minecraft.entity.EntityLivingBase func_184583_d(Lnet/minecraft/util/DamageSource;)Z # canBlockDamageSource
+
+# Portal color
+public net.minecraft.world.ChunkCache field_72815_e # world

src/main/resources/assets/inspirations/blockstates/portal.json

@@ -0,0 +1,6 @@
+{
+  "variants": {
+    "axis=z": { "model": "inspirations:portal_ew" },
+    "axis=x": { "model": "inspirations:portal_ns" }
+  }
+}

src/main/resources/assets/inspirations/models/block/portal_ew.json

@@ -0,0 +1,15 @@
+{
+  "textures": {
+    "particle": "blocks/portal",
+    "portal": "inspirations:blocks/portal"
+  },
+  "elements": [
+    { "from": [ 6, 0, 0 ],
+      "to": [ 10, 16, 16 ],
+      "faces": {
+        "east": { "uv": [ 0, 0, 16, 16 ], "texture": "#portal", "tintindex": 0 },
+        "west": { "uv": [ 0, 0, 16, 16 ], "texture": "#portal", "tintindex": 0 }
+      }
+    }
+  ]
+}

src/main/resources/assets/inspirations/models/block/portal_ns.json

@@ -0,0 +1,15 @@
+{
+  "textures": {
+    "particle": "blocks/portal",
+    "portal": "inspirations:blocks/portal"
+  },
+  "elements": [
+    { "from": [ 0, 0, 6 ],
+      "to": [ 16, 16, 10 ],
+      "faces": {
+        "north": { "uv": [ 0, 0, 16, 16 ], "texture": "#portal", "tintindex": 0 },
+        "south": { "uv": [ 0, 0, 16, 16 ], "texture": "#portal", "tintindex": 0 }
+      }
+    }
+  ]
+}

src/main/resources/assets/inspirations/textures/blocks/portal.png.mcmeta

@@ -0,0 +1,3 @@
+{
+  "animation": {}
+}