GML-Animated Flag

A simple, vertex based animation, that offers many settings to customize:

Variable	Description
`animation_fps`	how many frames shall be calculated?
`intensity`	how many waves are on the flag
`wave_speed`	how fast do the waves move
`wave_height`	how strong are the waves
`vertex_count`	if -1, then default of 10% of sprite width
`render_width`	if -1, then image_xscale as set in room editor
`render_height`	if -1, then image_yscale as set in room editor

Here's a screenshot of the demo room in the repository