Make it so shit glints.

src/main/java/somehussar/gui/guides/GuideController.java

@@ -5,7 +5,7 @@ import tconstruct.client.tabs.InventoryTabGuides;
 import tconstruct.client.tabs.TabRegistry;
 
 // TODO: THIS IS JUST THE CLIENT SIDE CONTROLLER
-// NEED SERVER SIDE
+//       NEED SERVER SIDE
 public class GuideController {
     private static boolean isGuideLoaded = true;
 
@@ -17,7 +17,7 @@ public class GuideController {
         GuideController.isGuideLoaded = isGuideLoaded;
     }
 
-    public static void forceGuideButtonToBeFirst() {
-        TabRegistry.getTabList().add(0, new InventoryTabGuides());
+    public static boolean glint() {
+        return true;
     }
 }

src/main/java/tconstruct/client/tabs/InventoryTabGuides.java

@@ -1,12 +1,22 @@
 package tconstruct.client.tabs;
 
 import net.minecraft.client.Minecraft;
-import net.minecraft.client.gui.Gui;
+import net.minecraft.client.gui.GuiScreen;
+import net.minecraft.client.gui.inventory.GuiInventory;
+import net.minecraft.client.renderer.OpenGlHelper;
+import net.minecraft.client.renderer.RenderHelper;
+import net.minecraft.client.renderer.Tessellator;
+import net.minecraft.client.renderer.entity.RenderItem;
 import net.minecraft.util.ResourceLocation;
 import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL12;
 import somehussar.gui.guides.GuideController;
 
+import static tconstruct.client.tabs.TabRegistry.getPotionOffset;
+
 public class InventoryTabGuides extends AbstractTab {
+
+    // TODO: Replace with a proper texture.
     private static final ResourceLocation HELP_TEXTURE = new ResourceLocation("customnpcs", "textures/marks/question.png");
     public InventoryTabGuides() {
         super(0, 0, 0, null);
@@ -14,7 +24,17 @@ public class InventoryTabGuides extends AbstractTab {
 
     @Override
     public void onTabClicked() {
+        int xSize = 176;
+        int ySize = 166;
+        GuiScreen gui = Minecraft.getMinecraft().currentScreen;
 
+        if (!(gui instanceof GuiInventory))
+            return;
+
+        int guiLeft = (gui.width - xSize) / 2;
+        int guiTop = (gui.height - ySize) / 2;
+        guiLeft += getPotionOffset();
+        TabRegistry.updateTabValues(guiLeft, guiTop, InventoryTabGuides.class);
     }
 
     @Override
@@ -25,6 +45,10 @@ public class InventoryTabGuides extends AbstractTab {
     @Override
     public void drawButton(Minecraft mc, int mouseX, int mouseY) {
         if (this.visible) {
+            GL11.glEnable(GL11.GL_DEPTH_TEST);
+            GL11.glDepthFunc(GL11.GL_LEQUAL);
+            GL11.glDepthMask(true);
+            this.zLevel = 100.0F;
             GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
             int yTexPos = this.enabled ? 3 : 32;
             int ySize = this.enabled ? 25 : 32;
@@ -34,13 +58,80 @@ public class InventoryTabGuides extends AbstractTab {
             this.drawTexturedModalRect(this.xPosition, yPos, xOffset * 28,
                 yTexPos, 28, ySize);
 
-            this.zLevel = 100.0F;
-
+            this.zLevel = 100.0f;
             mc.renderEngine.bindTexture(HELP_TEXTURE);
-            func_146110_a(xPosition + 6, yPosition + 8, 0, 0, 16, 16, 16, 16);
 
+            RenderHelper.enableGUIStandardItemLighting();
+            this.zLevel = 100.0F;
+            this.itemRenderer.zLevel = 100.0F;
+            GL11.glEnable(GL11.GL_LIGHTING);
+            GL11.glEnable(GL12.GL_RESCALE_NORMAL);
+            drawTextured(this.xPosition + 6, this.yPosition + 8, 0, 0, 16, 16, 16, 16);
+
+            if (GuideController.glint()) {
+                GL11.glDepthFunc(GL11.GL_EQUAL);
+                GL11.glDisable(GL11.GL_LIGHTING);
+                GL11.glDepthMask(false);
+                mc.renderEngine.bindTexture(RenderItem.RES_ITEM_GLINT);
+                GL11.glEnable(GL11.GL_ALPHA_TEST);
+                GL11.glEnable(GL11.GL_BLEND);
+                GL11.glColor4f(0.5F, 0.25F, 0.8F, 1.0F);
+                this.renderGlint(this.xPosition, yPos, 28, ySize);
+                GL11.glDepthMask(true);
+                GL11.glDisable(GL11.GL_BLEND);
+                GL11.glDisable(GL11.GL_ALPHA_TEST);
+                GL11.glEnable(GL11.GL_LIGHTING);
+                GL11.glDepthFunc(GL11.GL_LEQUAL);
+            }
+            GL11.glEnable(GL11.GL_DEPTH_TEST);
             this.zLevel = 0.0F;
+            GL11.glDisable(GL11.GL_LIGHTING);
+            GL11.glEnable(GL11.GL_BLEND);
 
         }
     }
+
+    private void renderGlint(int x, int y, int width, int height) {
+        OpenGlHelper.glBlendFunc(GL11.GL_SRC_COLOR, GL11.GL_ONE, 0, 0);
+
+        final float GLINT_TEX_SCALE = 0.00390625F; // 1 / 256
+        long now = Minecraft.getSystemTime();
+        double z = this.zLevel;
+        Tessellator tessellator = Tessellator.instance;
+
+        tessellator.startDrawingQuads();
+
+        for (int pass = 0; pass < 2; ++pass) {
+            long cycleLengthMs = 3000 + pass * 1873;
+            float scrollU = (now % cycleLengthMs) / (float) cycleLengthMs * 256.0F;
+            float skew = (pass == 1) ? -1.0F : 4.0F;
+
+            float uLeft = scrollU * GLINT_TEX_SCALE;
+            float uRight = (scrollU + width) * GLINT_TEX_SCALE;
+            float uBottomSkew = (scrollU + height * skew) * GLINT_TEX_SCALE;
+            float uBottomRightSkew = (scrollU + width + height * skew) * GLINT_TEX_SCALE;
+            float vTop = 0.0F;
+            float vBottom = height * GLINT_TEX_SCALE;
+
+            tessellator.addVertexWithUV(x, y + height, z, uBottomSkew, vBottom);
+            tessellator.addVertexWithUV(x + width, y + height, z, uBottomRightSkew, vBottom);
+            tessellator.addVertexWithUV(x + width, y, z, uRight, vTop);
+            tessellator.addVertexWithUV(x, y, z, uLeft, vTop);
+        }
+
+        tessellator.draw();
+    }
+
+    private void drawTextured(int x, int y, float u, float v, int width, int height, float textureWidth, float textureHeight)
+    {
+        float f4 = 1.0F / textureWidth;
+        float f5 = 1.0F / textureHeight;
+        Tessellator tessellator = Tessellator.instance;
+        tessellator.startDrawingQuads();
+        tessellator.addVertexWithUV((double)x, (double)(y + height), this.zLevel, (double)(u * f4), (double)((v + (float)height) * f5));
+        tessellator.addVertexWithUV((double)(x + width), (double)(y + height), this.zLevel, (double)((u + (float)width) * f4), (double)((v + (float)height) * f5));
+        tessellator.addVertexWithUV((double)(x + width), (double)y, this.zLevel, (double)((u + (float)width) * f4), (double)(v * f5));
+        tessellator.addVertexWithUV((double)x, (double)y, this.zLevel, (double)(u * f4), (double)(v * f5));
+        tessellator.draw();
+    }
 }

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

@@ -26,3 +26,5 @@ public net.minecraft.client.Minecraft field_147126_aw # mcMusicTicker
 public net.minecraft.client.audio.MusicTicker field_147676_d # timeUntilNextMusic
 #GuiScreen
 public net.minecraft.client.gui.GuiScreen field_146290_a # selectedButton
+# ItemRenderer
+public net.minecraft.client.renderer.entity.RenderItem field_110798_h # RES_ITEM_GLINT