Use a separate region for the bottom pocket computer border

This is definitely not a good solution, but it's probably the best we
can do right now given resizable computers are a thing.

Fixes #775, closes #776

src/main/java/dan200/computercraft/client/render/ComputerBorderRenderer.java

@@ -38,7 +38,10 @@ public class ComputerBorderRenderer {
     private static final int CORNER_LEFT_X = BORDER;
     private static final int CORNER_RIGHT_X = CORNER_LEFT_X + BORDER;
     private static final int BORDER_RIGHT_X = 36;
-    private static final int GAP = 4;
+    private static final int LIGHT_BORDER_Y = 56;
+    private static final int LIGHT_CORNER_Y = 80;
+
+    public static final int LIGHT_HEIGHT = 8;
     private static final float TEX_SCALE = 1 / 256.0f;
 
     static {
@@ -89,15 +92,16 @@ public class ComputerBorderRenderer {
     }
 
     public static void render(Matrix4f transform, VertexConsumer buffer, int x, int y, int z, int width, int height, float r, float g, float b) {
-        render(transform, buffer, x, y, z, width, height, 0, r, g, b);
+        render( transform, buffer, x, y, z, width, height, false, r, g, b );
     }
 
-    public static void render(Matrix4f transform, VertexConsumer buffer, int x, int y, int z, int width, int height, int borderHeight, float r, float g,
-                              float b) {
-        new ComputerBorderRenderer(transform, buffer, z, r, g, b).doRender(x, y, width, height, borderHeight);
+    public static void render( Matrix4f transform, VertexConsumer buffer, int x, int y, int z, int width, int height, boolean withLight, float r, float g, float b )
+    {
+        new ComputerBorderRenderer( transform, buffer, z, r, g, b ).doRender( x, y, width, height, withLight );
     }
 
-    public void doRender(int x, int y, int width, int height, int bottomHeight) {
+    public void doRender( int x, int y, int width, int height, boolean withLight )
+    {
         int endX = x + width;
         int endY = y + height;
 
@@ -112,24 +116,17 @@ public class ComputerBorderRenderer {
 
         // Bottom bar. We allow for drawing a stretched version, which allows for additional elements (such as the
         // pocket computer's lights).
-        if (bottomHeight <= 0) {
+        if( withLight )
+        {
+            renderTexture( x, endY, 0, LIGHT_BORDER_Y, endX - x, BORDER + LIGHT_HEIGHT, BORDER, BORDER + LIGHT_HEIGHT );
+            renderTexture( x - BORDER, endY, CORNER_LEFT_X, LIGHT_CORNER_Y, BORDER, BORDER + LIGHT_HEIGHT );
+            renderTexture( endX, endY, CORNER_RIGHT_X, LIGHT_CORNER_Y, BORDER, BORDER + LIGHT_HEIGHT );
+        }
+        else
+        {
             this.renderLine(x, endY, 0, BORDER, endX - x, BORDER);
             this.renderCorner(x - BORDER, endY, CORNER_LEFT_X, CORNER_BOTTOM_Y);
             this.renderCorner(endX, endY, CORNER_RIGHT_X, CORNER_BOTTOM_Y);
-        } else {
-            // Bottom left, middle, right. We do this in three portions: the top inner corners, an extended region for
-            // lights, and then the bottom outer corners.
-            this.renderTexture(x - BORDER, endY, CORNER_LEFT_X, CORNER_BOTTOM_Y, BORDER, BORDER / 2);
-            this.renderTexture(x, endY, 0, BORDER, width, BORDER / 2, BORDER, BORDER / 2);
-            this.renderTexture(endX, endY, CORNER_RIGHT_X, CORNER_BOTTOM_Y, BORDER, BORDER / 2);
-
-            this.renderTexture(x - BORDER, endY + BORDER / 2, CORNER_LEFT_X, CORNER_BOTTOM_Y + GAP, BORDER, bottomHeight, BORDER, GAP);
-            this.renderTexture(x, endY + BORDER / 2, 0, BORDER + GAP, width, bottomHeight, BORDER, GAP);
-            this.renderTexture(endX, endY + BORDER / 2, CORNER_RIGHT_X, CORNER_BOTTOM_Y + GAP, BORDER, bottomHeight, BORDER, GAP);
-
-            this.renderTexture(x - BORDER, endY + bottomHeight + BORDER / 2, CORNER_LEFT_X, CORNER_BOTTOM_Y + BORDER / 2, BORDER, BORDER / 2);
-            this.renderTexture(x, endY + bottomHeight + BORDER / 2, 0, BORDER + BORDER / 2, width, BORDER / 2);
-            this.renderTexture(endX, endY + bottomHeight + BORDER / 2, CORNER_RIGHT_X, CORNER_BOTTOM_Y + BORDER / 2, BORDER, BORDER / 2);
         }
     }
 

src/main/java/dan200/computercraft/client/render/ItemPocketRenderer.java

@@ -6,6 +6,7 @@
 
 package dan200.computercraft.client.render;
 
+import static dan200.computercraft.client.render.ComputerBorderRenderer.*;
 import static dan200.computercraft.client.gui.FixedWidthFontRenderer.FONT_HEIGHT;
 import static dan200.computercraft.client.gui.FixedWidthFontRenderer.FONT_WIDTH;
 import static dan200.computercraft.client.render.ComputerBorderRenderer.BORDER;
@@ -31,12 +32,13 @@ import net.minecraft.client.util.math.Vector3f;
 import net.minecraft.item.ItemStack;
 import net.minecraft.util.math.Matrix4f;
 
+import static dan200.computercraft.client.render.ComputerBorderRenderer.*;
+
 /**
  * Emulates map rendering for pocket computers.
  */
 public final class ItemPocketRenderer extends ItemMapLikeRenderer {
     public static final ItemPocketRenderer INSTANCE = new ItemPocketRenderer();
-    private static final int LIGHT_HEIGHT = 8;
 
     private ItemPocketRenderer() {
     }
@@ -108,7 +110,7 @@ public final class ItemPocketRenderer extends ItemMapLikeRenderer {
         BufferBuilder buffer = tessellator.getBuffer();
         buffer.begin(GL11.GL_QUADS, VertexFormats.POSITION_COLOR_TEXTURE);
 
-        ComputerBorderRenderer.render(transform, buffer, 0, 0, 0, width, height, LIGHT_HEIGHT, r, g, b);
+        ComputerBorderRenderer.render(transform, buffer, 0, 0, 0, width, height, true, r, g, b);
 
         tessellator.draw();
     }