Slot decorations

Author: sinender

src/main/java/llc/redstone/hysentials/config/hysentialMods/FormattingConfig.java

@@ -1,9 +1,9 @@
 package llc.redstone.hysentials.config.hysentialMods;
 
 import cc.polyfrost.oneconfig.config.Config;
+import cc.polyfrost.oneconfig.config.annotations.*;
 import cc.polyfrost.oneconfig.config.annotations.Button;
-import cc.polyfrost.oneconfig.config.annotations.CustomOption;
-import cc.polyfrost.oneconfig.config.annotations.Switch;
+import cc.polyfrost.oneconfig.config.annotations.Color;
 import cc.polyfrost.oneconfig.config.core.ConfigUtils;
 import cc.polyfrost.oneconfig.config.core.OneColor;
 import cc.polyfrost.oneconfig.config.data.Mod;
@@ -117,6 +117,40 @@ public void openRankHexConfig() {
     )
     public static boolean hoverOutlineColor = true;
 
+    @Switch(
+        name = "Slot Decoration",
+        category = "General",
+        subcategory = "Slot Decoration",
+        description = "Enable slot decorations."
+    )
+    public static boolean slotDecoration = true;
+
+    @Dropdown(
+        name = "Slot Decoration Style",
+        category = "General",
+        subcategory = "Slot Decoration",
+        description = "Change the style of the slot decoration.",
+        options = {"Circle", "Rectangle"}
+    )
+    public static int slotDecorationStyle = 0;
+
+    @Color(
+        name = "Slot Decoration Alpha",
+        category = "General",
+        subcategory = "Slot Decoration",
+        description = "Change the alpha of the slot decoration color."
+    )
+    public static OneColor slotDecorationColor = new OneColor(0, 0, 0, 200);
+
+    @Slider(
+        name = "Slot Decoration Color Offset",
+        category = "General",
+        subcategory = "Slot Decoration",
+        description = "Change the color offset of the slot decoration color.",
+        min = -255,
+        max = 255
+    )
+    public static int slotDecorationColorOffset = -20;
 
     @RankAnnotation(
         name = "Default Rank",

src/main/java/llc/redstone/hysentials/mixin/SlotDecorationMixin.java

@@ -0,0 +1,55 @@
+package llc.redstone.hysentials.mixin;
+
+import llc.redstone.hysentials.config.hysentialMods.FormattingConfig;
+import llc.redstone.hysentials.util.ImageIconRenderer;
+import llc.redstone.hysentials.util.Renderer;
+import net.minecraft.client.gui.inventory.GuiContainer;
+import net.minecraft.client.renderer.GlStateManager;
+import net.minecraft.client.renderer.Tessellator;
+import net.minecraft.client.renderer.WorldRenderer;
+import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
+import net.minecraft.inventory.Slot;
+import net.minecraft.util.MathHelper;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import java.awt.*;
+
+import static net.minecraftforge.fml.client.config.GuiUtils.drawGradientRect;
+
+@Mixin(value = GuiContainer.class, priority = Integer.MAX_VALUE)
+public abstract class SlotDecorationMixin {
+    @Inject(method = "drawSlot", at = @At(value = "HEAD"))
+    public void drawSlot(Slot slotIn, CallbackInfo ci) {
+        if (FormattingConfig.slotDecoration) {
+            int style = FormattingConfig.slotDecorationStyle;
+            int i = slotIn.xDisplayPosition;
+            int j = slotIn.yDisplayPosition;
+            if (slotIn.getHasStack()) {
+                String s = slotIn.getStack().getDisplayName();
+                String hex = ImageIconRenderer.getHexFromString(s, true);
+                if (hex == null || hex.isEmpty()) {
+                    return;
+                }
+                Color c = Color.decode(hex);
+                int offset = FormattingConfig.slotDecorationColorOffset;
+                c = new Color(c.getRed() + offset, c.getGreen() + offset, c.getBlue() + offset, FormattingConfig.slotDecorationColor.getAlpha());
+                int c2 = c.getRGB();
+                if (style == 0) {
+                    GlStateManager.pushMatrix();
+                    GlStateManager.disableLighting();
+                    GlStateManager.disableDepth();
+                    Renderer.drawCircle(c2, i + 8, j + 8, 8, 100, 5);
+                    GlStateManager.enableLighting();
+                    GlStateManager.enableDepth();
+                    GlStateManager.popMatrix();
+                } else {
+                    drawGradientRect(0, i, j, i + 16, j + 16, c2, c2);
+                }
+            }
+        }
+    }
+}

src/main/java/llc/redstone/hysentials/util/Renderer.java

@@ -29,6 +29,7 @@
 import java.util.function.Consumer;
 
 import static cc.polyfrost.oneconfig.renderer.TextRenderer.drawBorderedText;
+import static java.lang.Math.*;
 
 public class Renderer {
     public Renderer() {
@@ -92,8 +93,42 @@ public static void drawString(String text, int x, int y, float size, boolean sha
         GlStateManager.popMatrix();
     }
 
+    private static final float TWO_PI = 2.0f * (float) PI;
 
+    public static void drawCircle(long color, float x, float y, float radius, int steps, int drawMode) {
+        float theta = TWO_PI / steps;
+        float cos = (float) cos(theta);
+        float sin = (float) sin(theta);
 
+        float xHolder;
+        float circleX = 1f;
+        float circleY = 0f;
+
+        GlStateManager.enableBlend();
+        GlStateManager.disableTexture2D();
+        GlStateManager.tryBlendFuncSeparate(770, 771, 1, 0);
+
+        doColor(color);
+
+        worldRenderer.begin(drawMode, DefaultVertexFormats.POSITION);
+
+        for (int i = 0; i <= steps; i++) {
+            worldRenderer.pos(x, y, 0.0).endVertex();
+            worldRenderer.pos((circleX * radius + x), (circleY * radius + y), 0.0).endVertex();
+            xHolder = circleX;
+            circleX = cos * circleX - sin * circleY;
+            circleY = sin * xHolder + cos * circleY;
+            worldRenderer.pos((circleX * radius + x), (circleY * radius + y), 0.0).endVertex();
+        }
+
+        tessellator.draw();
+
+        GlStateManager.color(1f, 1f, 1f, 1f);
+        GlStateManager.enableTexture2D();
+        GlStateManager.disableBlend();
+
+        finishDraw();
+    }
 
     public static void drawRect(long color, float x, float y, float width, float height) {
         float[] pos = {x, y, x + width, y + height};

src/main/resources/mixins.hysentials.json

@@ -23,6 +23,7 @@
     "PlayerRendererMixin",
     "RenderItemMixin",
     "RenderLivingMixin",
-    "RenderMixin"
+    "RenderMixin",
+    "SlotDecorationMixin"
   ]
 }