forked from tas/major_tom
fc33658f75
Replace warm brown asteroid sprites with cold grey cratered moonrock using irregular silhouettes and crater detail. No burning/fire trail since there is no atmosphere on the moon — trail is now grey dust debris. Ground impact uses a 4-layer explosion: rock shrapnel, dust plume, ground-level dust spread, and a brief white flash. Player-hit also gets shrapnel + dust cloud instead of the old small puff.