3D Items!

docs/CHANGELOG.md

@@ -46,6 +46,7 @@
     * `Hide Block Outline When GUI Is Hidden` (Enabled By Default)
     * `Fix Crash When Generating Certain Seeds` (Enabled By Default)
     * `Click Buttons On Mouse Down` (Enabled By Default)
+    * `3D Dropped Items` (Enabled By Default)
   * Existing Functionality (All Enabled By Default)
     * `Fix Screen Rendering When Hiding HUD`
     * `Sanitize Usernames`

launcher/src/client/available-feature-flags

@@ -109,3 +109,4 @@ TRUE Use Updated Title
 TRUE Hide Block Outline When GUI Is Hidden
 TRUE Fix Crash When Generating Certain Seeds
 TRUE Click Buttons On Mouse Down
+TRUE 3D Dropped Items

mods/src/misc/graphics.cpp

@@ -1,3 +1,5 @@
+#include <cmath>
+
 #include <libreborn/libreborn.h>
 #include <symbols/minecraft.h>
 
@@ -261,6 +263,81 @@ static ContainerMenu *ContainerMenu_destructor_injection(ContainerMenu_destructo
     return original(container_menu);
 }
 
+// 3D Dropped Items
+static bool disable_hand_positioning = false;
+static void ItemInHandRenderer_renderItem_glTranslatef_injection(const float x, const float y, const float z) {
+    if (disable_hand_positioning) {
+        glPopMatrix();
+        glPushMatrix();
+    } else {
+        glTranslatef(x, y, z);
+    }
+}
+static void ItemRenderer_render_injection(ItemRenderer_render_t original, ItemRenderer *self, Entity *entity, const float x, const float y, const float z, const float a, const float b) {
+    // Get Item
+    const ItemEntity *item_entity = (ItemEntity *) entity;
+    ItemInstance item = item_entity->item;
+    // Check If Item Is Tile
+    if (item.id < 256 && TileRenderer::canRender(Tile::tiles[item.id]->getRenderShape())) {
+        // Call Original Method
+        original(self, entity, x, y, z, a, b);
+    } else {
+        // 3D Item
+        self->random.setSeed(187);
+        glPushMatrix();
+
+        // Count
+        int count;
+        if (item.count < 2) {
+            count = 1;
+        } else if (item.count < 16) {
+            count = 2;
+        } else if (item.count < 32) {
+            count = 3;
+        } else {
+            count = 4;
+        }
+
+        // Bob
+        const float age = float(item_entity->age) + b;
+        const float bob = (Mth::sin((age / 10.0f) + item_entity->bob_offset) * 0.1f) + 0.1f;
+        glTranslatef(x, y + bob, z);
+
+        // Scale
+        glScalef(0.5f, 0.5f, 0.5f);
+
+        // Spin
+        const float spin = ((age / 20.0f) + item_entity->bob_offset) * float(180.0f / M_PI);
+        glRotatef(spin, 0, 1, 0);
+
+        // Position
+        constexpr float xo = 0.5f;
+        constexpr float yo = 0.25f;
+        constexpr float width = 1 / 16.0f;
+        constexpr float margin = 0.35f / 16.0f;
+        constexpr float zo = width + margin;
+        glTranslatef(-xo, -yo, -((zo * float(count)) / 2));
+
+        // Draw
+        disable_hand_positioning = true;
+        for (int i = 0; i < count; i++) {
+            glTranslatef(0, 0, zo);
+            glPushMatrix();
+            if (i > 0) {
+                const float c = (self->random.nextFloat() * 2 - 1) * 0.15f;
+                const float d = (self->random.nextFloat() * 2 - 1) * 0.15f;
+                glTranslatef(c, d, 0.0f);
+            }
+            EntityRenderer::entityRenderDispatcher->item_renderer->renderItem(nullptr, &item);
+            glPopMatrix();
+        }
+        disable_hand_positioning = false;
+
+        // Finish
+        glPopMatrix();
+    }
+}
+
 // Init
 void _init_misc_graphics() {
     // Disable V-Sync
@@ -351,6 +428,12 @@ void _init_misc_graphics() {
         overwrite_calls(ChestTileEntity_shouldSave, ChestTileEntity_shouldSave_injection);
     }
 
+    // 3D Dropped Items
+    if (feature_has("3D Dropped Items", server_disabled)) {
+        overwrite_calls(ItemRenderer_render, ItemRenderer_render_injection);
+        overwrite_call((void *) 0x4bf34, (void *) ItemInHandRenderer_renderItem_glTranslatef_injection);
+    }
+
     // Don't Render Game In Headless Mode
     if (reborn_is_headless()) {
         overwrite_calls(GameRenderer_render, nop<GameRenderer_render_t, GameRenderer *, float>);

mods/src/textures/lava.cpp

@@ -216,11 +216,7 @@ static DynamicTexture *create_fire_texture(const int a2) {
     texture->super()->vtable = get_fire_texture_vtable();
     // Setup Random
     texture->data.m_random = Random::allocate();
-    const int seed = Common::getTimeMs();
+    texture->data.m_random->constructor();
-    texture->data.m_random->seed = seed;
-    texture->data.m_random->param_1 = 0x271;
-    texture->data.m_random->param_2 = false;
-    texture->data.m_random->param_3 = 0;
     for (int i = 0; i < 320; i++) {
         texture->data.m_data1[i] = 0.0f;
         texture->data.m_data2[i] = 0.0f;

symbols/src/entity/EntityRenderer.def

@@ -1,6 +1,8 @@
+vtable 0x1075a8;
+
 virtual-method void render(Entity *entity, float param_2, float param_3, float param_4, float param_5, float param_6) = 0x8;
 
-// Can be called without an EntityRenderer, just do EntityRenderer_bindTexture(NULL, &file);
+// Can be called without an EntityRenderer, just do EntityRenderer_bindTexture->get(false)(NULL, &file);
 method void bindTexture(const std::string &file) = 0x62540;
 
 // Globals

symbols/src/entity/ItemEntity.def

@@ -5,3 +5,4 @@ constructor (Level *level, float x, float y, float z, const ItemInstance &item)
 
 property ItemInstance item = 0xd0;
 property int age = 0xdc;
+property float bob_offset = 0xe4;

symbols/src/item/ItemRenderer.def

@@ -1,3 +1,7 @@
+extends EntityRenderer;
+
+vtable 0x107970;
+
 static-method void renderGuiItem_one(Font *font, Textures *textures, const ItemInstance *item_instance, float x, float y, bool param_3) = 0x63e58;
 static-method void renderGuiItem_two(Font *font, Textures *textures, const ItemInstance *item_instance, float x, float y, float w, float h, bool param_5) = 0x63be0;
 static-method void renderGuiItemCorrect(Font *font, Textures *textures, const ItemInstance *item_instance, int x, int y) = 0x639a0;
@@ -7,3 +11,5 @@ static-method void blit(float x, float y, float texture_x, float texture_y, floa
 // This doesn't include things that it doesn't need for item rendering (like the level)
 // So if you are (ab)using it for something else, be sure to set what you need
 static-property TileRenderer *tileRenderer = 0x137c18;
+
+property Random random = 0xc;

symbols/src/level/renderer/LevelRenderer.def

@@ -1,5 +1,6 @@
 method void tick() = 0x4da1c;
 method int render(Mob *mob, int param_1, float delta) = 0x4f710;
+method void render_AABB(const AABB &box) = 0x4d740;
 method void renderDebug(const AABB &aabb, float delta) = 0x4d310;
 method void generateSky() = 0x4d0d4;
 method void renderHitSelect(Player *player, const HitResult &hit_result, int i, void *vp, float f) = 0x4e318;

symbols/src/misc/Random.def

@@ -1,8 +1,11 @@
 size 0x9d0;
 
+constructor () = 0xb7490;
+
 method float nextFloat() = 0x42cf8;
 method uint genrand_int32() = 0x50e14;
 method void init_genrand(uint seed) = 0x27d38;
+method void setSeed(int seed) = 0xaf884;
 
 property uint seed = 0x0;
 property int param_1 = 0x9c4; // Set To 0x271