Rock Dodge Game

Create a rock dodge game.

The rock dodge game will have:

• a number of rocks being dodged (the system needs to support up to 100 rocks)
• a score
• the position of the player (x and y)
• the time for the next rock to appear
• a number of lives (3 to start)

Each rock will have:

• a position (x and y)
• a size
• a speed

The game will work as follows:

• The player should appear in middle of the lower part of the screen. They…
  • Can move left and right based on input from the user.
  • Must not collide with any of the falling rocks.
  • Get a point for every rock that is created.
• Every update (60 times a second):
  • Update the game:

    • Every one to six seconds, a new rock is added. This will occur when the game’s next rock to appear time is less than the current time (which you can get by calling the current_ticks() function). When this occurs, add a new rock (if there is capacity).

      A new rock is given:

      • A random size (between 20 and 200)
      • A y value that starts it above the top of the screen (y is - size)
      • A random position across the screen - from 0 to screen width
      • A random speed (from 1 to 5)

      When a rock is added, add one to the game’s score.

      Set the game’s next rock to appear time to be equal to the current time plus a random value between 1000 and 6000.

    • Add the speed value of each rock to its y position

    • Check if any rock is off the screen, when one does off

      • Add the size of the rock to the game’s score.
      • Remove the rock from the game

    • Check if the player has been hit by any rock, when they have:

      • Remove the rock that hit them.
      • Subtract one from their lives.
  • Handle input:
    • Check if the player wants to move, and move them left/right by 3 pixels
  • Draw the game:
    • Clear the screen
    • Draw the score, and number of lives
    • Draw the player - a circle, using the player location and a constant size.
    • Draw each of the rocks - a circle, using the rock location, and the rock’s size.
    • Refresh the screen - so the user can see it
• The game ends when the user requests to quit, or they have 0 lives.

Tip

Use a struct for the game data, this can contain the array, the number of rocks, position of the player, the next time a rock will appear, and score. You can then pass this to functions and procedures you create.

Tip

Also have a rock data struct. You can use this to store the data for one rock, and pass it as a parameter when you are working with a single rock.

Tip

You can consider using the point_2d or circle structs. If you are adventurous you could look at using bitmaps for the rocks and players.