Fix lighting, optimize performance

.gitignore

@@ -0,0 +1,5 @@
+# Ignore Gradle project-specific cache directory
+.gradle
+
+# Ignore Gradle build output directory
+build

src/main/java/net/PeytonPlayz585/opengl/LWJGLMain.java

@@ -923,7 +923,8 @@ public class LWJGLMain {
 				for(int i = 0; i < pixels.length; ++i) {
 					pixels[i] = (pxls.get(i * 4) << 16) | (pxls.get(i * 4 + 1) << 8) | pxls.get(i * 4 + 2) | (pxls.get(i * 4 + 3) << 24);
 				}
-				ret.complete(new MinecraftImageData(pixels, pxlsDat.getWidth(), pxlsDat.getHeight(), true));
+				IntBuffer buffer = IntBuffer.wrap(pixels);
+				ret.complete(new MinecraftImageData(buffer, pxlsDat.getWidth(), pxlsDat.getHeight(), true));
 			}
 		});
 		toLoad.addEventListener("error", new EventListener<Event>() {

src/main/java/net/PeytonPlayz585/opengl/MinecraftImageData.java

@@ -1,40 +1,55 @@
 package net.PeytonPlayz585.opengl;
 
+import java.nio.IntBuffer;
+
 public class MinecraftImageData {
 
-	public final int[] data;
+    public final IntBuffer data;
     public final int w;
     public final int h;
     public final boolean alpha;
+    private final int wh;
 
     public MinecraftImageData(int pw, int ph, boolean palpha) {
         this.w = pw;
         this.h = ph;
         this.alpha = palpha;
-		this.data = new int[pw * ph];
+        this.data = IntBuffer.allocate(pw * ph);
+        this.wh = pw * ph;
     }
 
-	public MinecraftImageData(int[] pdata, int pw, int ph, boolean palpha) {
-		if (pdata.length != pw * ph) {
-			throw new IllegalArgumentException("array size does not equal image size");
+    public MinecraftImageData(IntBuffer pdata, int pw, int ph, boolean palpha) {
+        if (pdata.capacity() != pw * ph) {
+            throw new IllegalArgumentException("buffer capacity does not equal image size");
         }
-		this.w = pw;
-		this.h = ph;
-		this.alpha = palpha;
-		if (!palpha) {
-			for (int i = 0; i < pdata.length; ++i) {
-				pdata[i] = pdata[i] | 0xFF000000;
+        w = pw;
+        h = ph;
+        alpha = palpha;
+        wh = pw * ph;
+        if (!alpha) {
+            for (int i = 0; i < wh; ++i) {
+                pdata.put(i, pdata.get(i) | 0xFF000000);
             }
+            pdata.rewind();
         }
-		this.data = pdata;
+        data = pdata;
     }
 
     public MinecraftImageData getSubImage(int x, int y, int pw, int ph) {
-		int[] img = new int[pw * ph];
-		for (int i = 0; i < ph; ++i) {
-			System.arraycopy(data, (i + y) * this.w + x, img, i * pw, pw);
-		}
-		return new MinecraftImageData(img, pw, ph, alpha);
+        int start = y * w + x;
+        IntBuffer subBuffer = data.slice();
+        subBuffer.position(start);
+        subBuffer.limit(start + pw * ph);
+		int[] temp = new int[pw * ph];
+        subBuffer.get(temp);
+		IntBuffer newBuffer = IntBuffer.wrap(temp);
+        return new MinecraftImageData(newBuffer, pw, ph, alpha);
     }
 
+	public int[] data() {
+        int[] array = new int[wh];
+        data.rewind();
+        data.get(array);
+        return array;
+    }
 }

src/main/java/net/minecraft/src/FontRenderer.java

@@ -18,7 +18,7 @@ public class FontRenderer {
 		MinecraftImageData bufferedimage = LWJGLMain.loadPNG(LWJGLMain.loadResourceBytes(s));
 		int i = bufferedimage.w;
 		int j = bufferedimage.h;
-		int ai[] = bufferedimage.data;
+		int ai[] = bufferedimage.data();
 		for (int k = 0; k < 256; k++) {
 			int l = k % 16;
 			int k1 = k / 16;

src/main/java/net/minecraft/src/GuiScreen.java

@@ -10,7 +10,7 @@ public class GuiScreen extends Gui {
 	protected Minecraft mc;
 	public int width;
 	public int height;
-	protected List controlList<GuiButton> = new ArrayList<GuiButton>();
+	protected List<GuiButton> controlList = new ArrayList<GuiButton>();
 	public boolean allowUserInput = false;
 	protected FontRenderer fontRenderer;
 

src/main/java/net/minecraft/src/Minecraft.java

@@ -1,5 +1,8 @@
 package net.minecraft.src;
 
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+
 import org.lwjgl.LWJGLException;
 import org.lwjgl.input.Keyboard;
 import org.lwjgl.input.Mouse;
@@ -91,7 +94,7 @@ public class Minecraft implements Runnable {
 		this.playerController.init();
 	}
 
-	private void loadScreen() throws LWJGLException {
+	private void loadScreen() {
 		ScaledResolution var1 = new ScaledResolution(this.displayWidth, this.displayHeight);
 		int var2 = var1.getScaledWidth();
 		int var3 = var1.getScaledHeight();
@@ -779,4 +782,32 @@ public class Minecraft implements Runnable {
 	public static Minecraft getMinecraft() {
 		return mc;
 	}
+
+	public final void setLighting(boolean var1) {
+		if(!var1) {
+			GL11.glDisable(2896);
+			GL11.glDisable(16384);
+		} else {
+			GL11.glEnable(2896);
+		    GL11.glEnable(16384);
+		    GL11.glEnable(2903);
+		    GL11.glColorMaterial(1032, 5634);
+		    float var4 = 0.7F;
+		    float var2 = 0.3F;
+		    Vec3D var3 = (new Vec3D(0.0F, -1.0F, 0.5F)).normalize();
+		    GL11.glLight(16384, 4611, this.createBuffer((float)var3.xCoord, (float)var3.yCoord, (float)var3.zCoord, 0.0F));
+		    GL11.glLight(16384, 4609, this.createBuffer(var2, var2, var2, 1.0F));
+		    GL11.glLight(16384, 4608, this.createBuffer(0.0F, 0.0F, 0.0F, 1.0F));
+	        GL11.glLightModel(2899, this.createBuffer(var4, var4, var4, 1.0F));
+		}
+	}
+
+	private FloatBuffer createBuffer(float var1, float var2, float var3, float var4) {
+		buffer.clear();
+	    buffer.put(var1).put(var2).put(var3).put(var4);
+	    buffer.flip();
+	    return buffer;
+	}
+
+	private FloatBuffer buffer = GLAllocation.createFloatBuffer(16);
 }

src/main/java/net/minecraft/src/RenderEngine.java

@@ -39,9 +39,7 @@ public class RenderEngine {
 				setupTexture(readTextureImage(LWJGLMain.loadResourceBytes(s.substring(7))), i);
 				clampTexture = false;
 			} else {
-				//if(s.equals("/terrain.png")) {
-					//useMipmaps = true;
-				//}
+				useMipmaps = true;
 				setupTexture(readTextureImage(LWJGLMain.loadResourceBytes(s)), i);
 				useMipmaps = false;
 			}
@@ -99,7 +97,7 @@ public class RenderEngine {
 		}
 		int j = bufferedimage.w;
 		int k = bufferedimage.h;
-		int ai[] = bufferedimage.data;
+		int ai[] = bufferedimage.data();
 		byte abyte0[] = new byte[j * k * 4];
 		for (int l = 0; l < ai.length; l++) {
 			int j1 = ai[l] >> 24 & 0xff;
@@ -177,10 +175,13 @@ public class RenderEngine {
 	}
 
 	public void bindTexture(int i) {
+		Minecraft.getMinecraft().setLighting(true);
 		if (i < 0) {
+			Minecraft.getMinecraft().setLighting(false);
 			return;
 		} else {
 			GL11.glBindTexture(3553 /* GL_TEXTURE_2D */, i);
+			Minecraft.getMinecraft().setLighting(false);
 			return;
 		}
 	}

src/main/java/net/minecraft/src/TerrainTextureManager.java

@@ -11,7 +11,7 @@ public class TerrainTextureManager {
 		field_1184_e = new int[5120];
 		field_1183_f = new int[34];
 		field_1182_g = new int[768];
-		int ai[] = LWJGLMain.loadPNG(LWJGLMain.loadResourceBytes("/terrain.png")).data;
+		int ai[] = LWJGLMain.loadPNG(LWJGLMain.loadResourceBytes("/terrain.png")).data();
 		for (int j = 0; j < 256; j++) {
 			int k = 0;
 			int l = 0;

src/main/java/net/minecraft/src/Vec3D.java

@@ -26,7 +26,7 @@ public class Vec3D {
 		return ((Vec3D)vectorList.get(nextVector++)).setComponents(var0, var2, var4);
 	}
 
-	private Vec3D(double var1, double var3, double var5) {
+	public Vec3D(double var1, double var3, double var5) {
 		if(var1 == -0.0D) {
 			var1 = 0.0D;
 		}