Byteandahalf tile render api

jni/modscript_nextgen.cpp

@@ -163,6 +163,16 @@ static void (*bl_Packet_Packet)(void*);
 static void (*bl_ClientSideNetworkHandler_handleMessagePacket_real)(void*, void*, MessagePacket*);
 static void** bl_MessagePacket_vtable;
 
+// Custom block renderers
+static void (*bl_TileRenderer_tesselateInWorld_real)(void*, Tile*, int, int, int);
+
+static void (*bl_TileRenderer_tesselateBlockInWorld)(void*, Tile*, int, int, int);
+static void (*bl_TileRenderer_tesselateCrossInWorld)(void*, Tile*, int, int, int);
+static void (*bl_TileRenderer_tesselateTorchInWorld)(void*, Tile*, int, int, int);
+
+static void* bl_TileRenderer_instance;
+
+
 bool bl_text_parse_color_codes = true;
 
 //custom blocks
@@ -248,6 +258,33 @@ void bl_RakNetInstance_connect_hook(RakNetInstance* rakNetInstance, char const*
 	bl_RakNetInstance_connect_real(rakNetInstance, host, port);
 }
 
+void bl_TileRenderer_tesselateInWorld_hook(void* tileRenderer, Tile* tile, int x, int y, int z) {
+	bl_TileRenderer_instance = tileRenderer;
+
+	int blockId = tile->id;
+	if (bl_custom_block_renderShape[blockId] != -1) {
+		bl_TileRenderer_tesselateInWorld_real(tileRenderer, tile, x, y, z);
+		return;
+	}
+	JNIEnv *env;
+
+	int attachStatus = bl_JavaVM->GetEnv((void**) &env, JNI_VERSION_1_2);
+	if(attachStatus == JNI_EDETACHED) {
+		bl_JavaVM->AttachCurrentThread(&env, NULL);
+	}
+
+	// Don't allow PREVENT_DEFAULT_STATUS to be invoked, as it would nuke all block rendering in the game
+	jmethodID mid = env->GetStaticMethodID(bl_scriptmanager_class, "blockRendererCallback", "(IIII)V");
+
+	env->CallStaticVoidMethod(bl_scriptmanager_class, mid, blockId, x, y, z);
+
+	if(attachStatus == JNI_EDETACHED) {
+		bl_JavaVM->DetachCurrentThread();
+	}
+
+	bl_TileRenderer_tesselateInWorld_real(tileRenderer, tile, x, y, z);
+}
+
 void bl_Font_drawSlow_hook(Font* font, char const* text, int length, float xOffset, float yOffset, int color, bool isShadow) {
 	if (bl_text_parse_color_codes) {
 		char const* currentTextBegin = text; //the current coloured section
@@ -520,6 +557,19 @@ JNIEXPORT void JNICALL Java_net_zhuoweizhang_mcpelauncher_ScriptManager_nativeCl
 	env->ReleaseStringUTFChars(text, utfChars);
 }
 
+JNIEXPORT int JNICALL Java_net_zhuoweizhang_mcpelauncher_ScriptManager_nativeGetBlockRenderShape
+  (JNIEnv *env, jclass clazz, jint blockId) {
+	Tile* tile = bl_Tile_tiles[blockId];
+	if(tile == NULL) return 0;
+
+	return bl_CustomBlock_getRenderShapeHook(tile);
+}
+
+JNIEXPORT void JNICALL Java_net_zhuoweizhang_mcpelauncher_ScriptManager_nativeSetBlockRenderShape
+  (JNIEnv *env, jclass clazz, jint blockId, jint renderType) {
+	  bl_custom_block_renderShape[blockId] = renderType;
+}
+
 Item* bl_constructItem(int id) {
 	Item* retval = (Item*) ::operator new((std::size_t) 72);
 	bl_Item_Item(retval, id - 0x100);
@@ -965,7 +1015,7 @@ JNIEXPORT void JNICALL Java_net_zhuoweizhang_mcpelauncher_ScriptManager_nativeAd
 JNIEXPORT void JNICALL Java_net_zhuoweizhang_mcpelauncher_ScriptManager_nativeAddFurnaceRecipe
   (JNIEnv *env, jclass clazz, jint inputId, jint outputId, jint outputDamage) {
   	ItemInstance outputStack;
-	bl_setItemInstance(&outputStack, outputId, 1, outputDamage); // Should this be null? You don't need count, not sure how to omit it completely
+	bl_setItemInstance(&outputStack, outputId, 1, outputDamage);
   	FurnaceRecipes* recipes = bl_FurnaceRecipes_getInstance();
   	bl_FurnaceRecipes_addFurnaceRecipe(recipes, inputId, outputStack);
 }
@@ -1118,6 +1168,31 @@ JNIEXPORT jlongArray JNICALL Java_net_zhuoweizhang_mcpelauncher_ScriptManager_na
 	return uuidArray;
 }
 
+// Custom block renderers
+JNIEXPORT void JNICALL Java_net_zhuoweizhang_mcpelauncher_ScriptManager_nativeRenderStandardBlock
+  (JNIEnv *env, jclass clazz, jint blockId, jint x, jint y, jint z) {
+  	Tile* tile = bl_Tile_tiles[blockId];
+  	if(tile == NULL) return;
+
+  	bl_TileRenderer_tesselateBlockInWorld(bl_TileRenderer_instance, tile, x, y, z);
+}
+
+JNIEXPORT void JNICALL Java_net_zhuoweizhang_mcpelauncher_ScriptManager_nativeRenderCrossBlock
+  (JNIEnv *env, jclass clazz, jint blockId, jint x, jint y, jint z) {
+	Tile* tile = bl_Tile_tiles[blockId];
+	if(tile == NULL) return;
+
+	bl_TileRenderer_tesselateCrossInWorld(bl_TileRenderer_instance, tile, x, y, z);
+}
+
+JNIEXPORT void JNICALL Java_net_zhuoweizhang_mcpelauncher_ScriptManager_nativeRenderTorchBlock
+  (JNIEnv *env, jclass clazz, jint blockId, jint x, jint y, jint z) {
+  	Tile* tile = bl_Tile_tiles[blockId];
+  	if(tile == NULL) return;
+
+  	bl_TileRenderer_tesselateTorchInWorld(bl_TileRenderer_instance, tile, x, y, z);
+}
+
 void bl_cppNewLevelInit() {
 	bl_entityUUIDMap.clear();
 }
@@ -1181,6 +1256,18 @@ void bl_setuphooks_cppside() {
 		dlsym(RTLD_DEFAULT, "_ZNK4Tile16getDescriptionIdEv");
 
 	bl_initCustomBlockVtable();
+
+	// This method switches out the Tile* render type and calls into the render type's respective tesselator
+	void* bl_TileRenderer_tesselateInWorld = dlsym(RTLD_DEFAULT, "_ZN12TileRenderer16tesselateInWorldEP4Tileiii");
+	mcpelauncher_hook(bl_TileRenderer_tesselateInWorld, (void*) &bl_TileRenderer_tesselateInWorld_hook, (void**) &bl_TileRenderer_tesselateInWorld_real);
+
+	// To render a standard block into the world; Use Tile::setShape to change the size and shape of it
+	bl_TileRenderer_tesselateBlockInWorld = (void (*)(void*, Tile*, int, int, int)) dlsym(RTLD_DEFAULT, "_ZN12TileRenderer21tesselateBlockInWorldEP4Tileiii");
+	// To render a cross block into the world; Use the tesselator to render a vertexUV into the location, in a cross shape
+	bl_TileRenderer_tesselateCrossInWorld = (void (*)(void*, Tile*, int, int, int)) dlsym(RTLD_DEFAULT, "_ZN12TileRenderer21tesselateCrossInWorldEP4Tileiii");
+	// To render a torch into the world at the given location. I think I can hook the angled torch renderer to make a torch at an angle
+	// That's an experiment for later.
+	bl_TileRenderer_tesselateTorchInWorld = (void (*)(void*, Tile*, int, int, int)) dlsym(RTLD_DEFAULT, "_ZN12TileRenderer21tesselateTorchInWorldEP4Tileiii");
 
 	bl_I18n_strings = (std::map <std::string, std::string> *) dlsym(RTLD_DEFAULT, "_ZN4I18n8_stringsE");
 	bl_Item_setIcon = (void (*)(Item*, std::string const&, int)) dlsym(mcpelibhandle, "_ZN4Item7setIconERKSsi");

src/net/zhuoweizhang/mcpelauncher/ScriptManager.java

@@ -207,6 +207,7 @@ public static void initJustLoadedScript(Context ctx, Script script, String sourc
 					classConstantsToJSObject(ItemCategory.class));
 			ScriptableObject.defineClass(scope, NativeBlockApi.class);
 			ScriptableObject.defineClass(scope, NativeServerApi.class);
+			ScriptableObject.defineClass(scope, NativeBlockRendererApi.class);
 			RendererManager.defineClasses(scope);
 		} catch (Exception e) {
 			e.printStackTrace();
@@ -297,6 +298,10 @@ public static void leaveGameCallback(boolean thatboolean) {
 	public static void attackCallback(int attacker, int victim) {
 		callScriptMethod("attackHook", attacker, victim);
 	}
+
+	public static void blockRendererCallback(int blockId, int x, int y, int z) {
+		callScriptMethod("renderBlockHook", blockId, x, y, z);
+	}
 
 	public static void tickCallback() {
 		callScriptMethod("modTick");
@@ -665,6 +670,7 @@ public static String getAllApiMethodsDescriptions() {
 		appendApiMethods(builder, NativeItemApi.class, "Item");
 		appendApiMethods(builder, NativeBlockApi.class, "Block");
 		appendApiMethods(builder, NativeServerApi.class, "Server");
+		appendApiMethods(builder, NativeBlockRendererApi.class, "BlockRenderer");
 		return builder.toString();
 
 	}
@@ -1211,6 +1217,18 @@ public static native void nativeAddItemFurnace(int x, int y, int z, int slot, in
 
  	public static native void nativeSetItemMaxDamage(int id, int maxDamage);
 
+ 	public static native int nativeGetBlockRenderShape(int blockId);
+
+ 	public static native void nativeSetBlockRenderShape(int blockId, int renderType);
+
+ 	// Custom block renderers
+ 	public static native void nativeRenderStandardBlock(int blockId, int x, int y, int z);
+
+ 	public static native void nativeRenderCrossBlock(int blockId, int x, int y, int z);
+
+ 	public static native void nativeRenderTorchBlock(int blockId, int x, int y, int z);
+
+
 	// setup
 	public static native void nativeSetupHooks(int versionCode);
 
@@ -1497,6 +1515,7 @@ public static int spawnMob(double x, double y, double z, int typeId, String tex)
 			return entityId;
 		}
 
+
 		@JSStaticFunction
 		public static String getSignText(int x, int y, int z, int line) {
 			if (line < 0 || line >= 4)
@@ -2205,6 +2224,16 @@ public static void setDestroyTime(int blockId, double time) {
 			nativeBlockSetDestroyTime(blockId, (float) time);
 		}
 
+		@JSStaticFunction
+		public static int getRenderType(int blockId) {
+			return nativeGetBlockRenderShape(blockId);
+		}
+
+		@JSStaticFunction
+		public static void setRenderType(int blockId, int renderType) {
+			nativeSetBlockRenderShape(blockId, renderType);
+		}
+
 		@JSStaticFunction
 		public static void setExplosionResistance(int blockId, double resist) {
 			nativeBlockSetExplosionResistance(blockId, (float) resist);
@@ -2317,6 +2346,31 @@ public String getClassName() {
 			return "Gui";
 		}
 	}
+
+	private static class NativeBlockRendererApi extends ScriptableObject {
+		public NativeBlockRendererApi() {
+		}
+
+		@JSStaticFunction
+		public static void renderBlock(int blockId, int x, int y, int z) {
+			nativeRenderStandardBlock(blockId, x, y, z);
+		}
+
+		@JSStaticFunction
+		public static void renderCross(int blockId, int x, int y, int z) {
+			nativeRenderCrossBlock(blockId, x, y, z);
+		}
+
+		@JSStaticFunction
+		public static void renderTorch(int blockId, int x, int y, int z) {
+			nativeRenderTorchBlock(blockId, x, y, z);
+		}
+
+		@Override
+		public String getClassName() {
+			return "BlockRenderer";
+		}
+	}
 
 	private static class SelectLevelRequest {
 		public String dir;