Implements drugs powerup #302
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The "Drugs!" powerup is implemented in two different parts
TheEffectsOfDrugsfunction which runs every frame that shuffles palette colors around (already done)DoDrugWobbleCamerafunction which manipulates the camera matrix to make the 3d scene 'wobble'Interestingly,
TheEffectsOfDrugsonly changes the first 224 palette entries, both in DOS and Windows releases. This is why in snowy maps, the ground (being mostly white, palette index 255) is unaffected.