Pygame Platformer (2019)

Animation

This is the animated branch.

Hero Animation

The hero has four additional attributes.

• facing_right is a boolean which is True when the hero is facing right and False otherwise. When the hero is first initialized, facing_right is set to True. Using the arrows to move right or left set this variable while playing.
• steps is a variable that tracks how many iterations of the game loop have elapsed while the hero is walking.
• step_rate is the number of frames that elapse before incrementing the walk_index to advance to the next image.
• walk_index is the index of the image in the walk list to show.

Two functions have been added to the hero.

step is called whenever the player is pressing either the right or left arrow key. This function increments the steps variable by one. Each time the steps variable reaches the step_ rate, it resets to zero and the walk_index is incremented. The walk_index resets to zero when equal to the length of the walk image list.

In the heros update function calls a new function set_image. set_image looks at the current direction and state of the hero (hurt, jumping/falling, idle, or walking) to set the appropriate image.

Enemy Animation

Enemies do not have a direction. Instead, they just cycle through all images in their images list. The step_rate is the number of frames that pass before the walk_index is incremented.