Add cassette

[RaphaelPour]

Cassetes are the power-ups of the game. Each one is permanently collectable and enables a special feature.

• texture: an oldschool MC cassette
• collectible
• indicator that Tex owns the cassette: added to an simple inventory that is always shown on the top/ center bottom (minecraft)?
• activatable if enough battery is left
• cassette 1 🟢 (reggea): defend more damage
• cassette 2 🔵 (techno): deal more damage
• cassette 3 🟤 (classic): peace
• if a cassette gets activated a timer should start that constantly decrease the energy level

Last mile

• the length of the progress bar/speed of the energy loss may be updatable: In early levels, energy is consumed quite quickly. In later levels Tex can have longer power us.
• Depending on the effect of the cassette or the energy might go down more quickly