Creating a Bubble Shooter game using HTML and JavaScript involves combining basic web development skills with game logic. Here’s a step-by-step conceptual description of how you’d go about building it:
1. Project Setup
- HTML: Sets up the structure. Use a
<canvas>
element for drawing the game. - JavaScript: Handles game logic, rendering, and user interaction.
- CSS (optional): For styling the page or canvas wrapper.
2. Game Components
- Canvas: The main drawing area.
- Bubbles: Circular objects with colors; they form a grid or cluster at the top.
- Shooter: A bubble launcher at the bottom that fires a new bubble upward.
- Aiming mechanism: Allows the player to aim using mouse movement or touch.
- Collision detection: Checks if the bubble hits other bubbles or walls.
- Match detection: Identifies if three or more bubbles of the same color are connected.
- Bubble removal: Removes matched bubbles and updates the game state.
3. Game Initialization
- Create a 2D array (or similar data structure) to represent the bubble grid.
- Populate the upper portion of the grid with random-colored bubbles.
- Position the shooter at the bottom center with a randomly chosen bubble color.
4. Rendering (Drawing the Game)
- Use the canvas API to draw:
- All bubbles in their grid positions.
- The shooter bubble.
- Aiming line or arrow (optional).
5. User Input
- Capture mouse/touch input to aim and shoot.
- On click/tap, calculate the direction vector from shooter to the target point.
- Use that direction to animate the bubble movement.
6. Bubble Movement & Collision
- Move the bubble frame by frame using requestAnimationFrame.
- Detect collision with:
- Walls (bounce effect).
- Other bubbles (stick the bubble and add it to the grid).
- Upon collision, check for matches.
7. Match Detection & Removal
- Implement a flood-fill algorithm to find connected bubbles of the same color.
- If 3 or more are connected, remove them.
- Also check for bubbles that are “floating” (not connected to the top), and remove them too.
8. Next Bubble
- After shooting, generate the next bubble and allow the player to shoot again.
9. Game Over Conditions
- Game ends when:
- Bubbles reach the bottom.
- Player clears all bubbles.
10. Polish (Optional but Nice)
- Add animations for popping bubbles.
- Add scoring.
- Add sound effects.
- Add increasing difficulty levels (e.g., rows dropping over time).
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