Low trampoline jumps

[HybridDog]

SuperTux version: supertux2 v0.6.2-614-gd86dae0e9
System information: Lubuntu 18.04

Expected behavior

When holding the jump button, Tux should always jump high after landing on a trampoline.

Actual behavior

When I hold the jump button shortly before Tux lands on the trampoline, he jumps only a low height.

Here is a video of the problem. To hear the sound you may need to download the video.

Steps to reproduce actual behavior

• Jump from a solid tile so that Tux will eventually land on a trampoline
• Release the jump button mid-air
• Shortly before landing on the trampoline, press and hold the jump button

Additional debugging information

As far as I know, there's a feature which lets Tux jump off solid ground if the player presses and holds the jump button shortly before landing. Perhaps the implementation of this feature conflicts with the high trampoline jumps.

If I remember correctly, there may be another old issue about this problem which is closed now.

[Alasdairbugs]

i dont think this is a bug. you just need to start holding jump 3-4 tiles from falling onto a spring, its actually extremely consistent. maybe this should be changed to give some "coyote time" but this is not necessarily a bug.

[HybridDog]

It's not consistent. Low trampoline jumps can only happen after jumping from solid ground or after falling from a previous low trampoline jump; if I jump on a trampoline, then let Tux bounce without holding jump and then let him bounce again while holding jump just before landing, the low trampoline jump doesn't happen. (I forgot to write this in the issue description)

I personally don't like this low trampoline jump behaviour because it's complicated and while playing it doesn't let me quickly re-decide how high Tux should jump.