FruitMerge3D

FruitMerge3D is a 3D physics-based casual game. The core mechanic is drop fruits → physics collision → merge identical fruits → create the ultimate watermelon. Players drop fruits from above into a container. When two identical fruits collide, they merge into a higher-level fruit. Keep merging to create the ultimate watermelon and achieve a high score.

### Basic Controls

1. Drag to Position: Touch and slide your finger on the screen to move the upcoming fruit above the container. A drop indicator appears on the ground to show where it will land.
2. Release to Drop: Lift your finger to release the fruit. It will fall into the container with realistic physics.
3. Wait for Next Fruit: After each drop, the next fruit is automatically generated after 1 second.

### Merge Rules

- When two identical fruits (same ID) collide, they merge into one higher-level fruit.
- The merged fruit increases in level by 1, becomes larger in size, and is worth more points.
- The highest-level fruit cannot be dropped directly; it can only be obtained through merging.
- Fruits that are playing their spawn animation or are currently merging will not participate in new merges.

### Fruit Types (10 Levels)

| Level | Score | Availability |
|-------|-------|-------------|
| 0 | 0 | Random drop |
| 1 | 2 | Random drop |
| 2 | 4 | Random drop |
| 3 | 8 | Random drop |
| 4 | 16 | Random drop |
| 5 | 32 | Merge only |
| 6 | 64 | Merge only |
| 7 | 128 | Merge only |
| 8 | 256 | Merge only |
| 9 | 512 | Ultimate fruit (Watermelon) |

- Fruits level 04 appear randomly for you to drop.
- Fruits level 59 can only be created through merging.
- Higher-level fruits are physically larger.

### Scoring

- Each time you successfully merge fruits, you earn the corresponding score value.
- Higher scores reflect better merging strategy and skill.
- Score changes are displayed with a smooth rolling number animation on screen.

### Lives & Game Over

- You start with 3 hearts (3 lives).
- If a fruit falls out of the container (below the visible bottom boundary), you lose 1 life and the fruit is removed.
- When all 3 lives are depleted, the game ends.
- After game over, you can:
- Watch a reward video to revive and continue playing.
- Restart for a new game.
- Return to the main menu.

### Special Reward: Creating the Watermelon

- Successfully merging the highest-level fruit (Watermelon) triggers a special celebration effect and sound.
- The main game interface keeps track of how many watermelons you have created.

### Settings

The following settings are available from the main menu and the pause screen:

- SFX Toggle: Control game sound effects (e.g., fruit merge sounds).
- BGM Toggle: Control background music playback.
- Vibration Toggle: Enable or disable haptic feedback.