Jazz Jackrabbit 2 Online

jjPAL rainbowPalette = jjBackupPalette;
array<jjLAYER@> allLayers;
int mappingIndex = -1;

int hueStepsTaken = 0;
int hueStepsYetToTake = 0;

void onLevelLoad() {
    mappingIndex = jjSpriteModeFirstFreeMapping();
    for (uint i = 1; i <= 8; ++i) {
		if (i <= 4 || i == 8) {
			jjLayers[i].spriteMode = SPRITE::MAPPING;
			jjLayers[i].spriteParam = mappingIndex;
		}
    }
	jjLayers[1].spriteMode = jjLayers[2].spriteMode = SPRITE::TRANSLUCENTMAPPING;
    jjSpriteModeSetMapping(mappingIndex, array<uint8>={}, rainbowPalette);
	for (uint tileID = jjTileCount; --tileID != 0;)
		jjTileType[tileID] = 0;
	for (uint layerID = 5; layerID <= 8; ++layerID)
		jjLayers[layerID].xSpeedModel = LAYERSPEEDMODEL::BOTHSPEEDS;
}

void onMain() {
	if (hueStepsYetToTake != 0) {
		--hueStepsYetToTake;
		if (++hueStepsTaken & 31 == 0 && !jjLocalPlayers[0].isIdle) {
			string color;
			switch ((hueStepsTaken / 32) & 7) {
				case 0:
					color = "Green";
					break;
				case 1:
					color = "Teal";
					break;
				case 2:
					color = "Blue";
					break;
				case 3:
					color = "Purple";
					break;
				case 4:
					color = "Magenta";
					break;
				case 5:
					color = "Red";
					break;
				case 6:
					color = "Orange";
					break;
				case 7:
					color = "Yellow";
					break;
			}
			color += " Beret";
			jjLevelName = color;
			jjLevelName = color;
		}
		for (uint i = 10; i <= 245; i++) {
			rainbowPalette.color[i].setHSL(jjBackupPalette.color[i].getHue() - 3 + hueStepsTaken, jjBackupPalette.color[i].getSat(), jjBackupPalette.color[i].getLight());
		}
		jjSpriteModeSetMapping(mappingIndex, array<uint8>={}, rainbowPalette);
		jjLayers[4].spriteMode = SPRITE::MAPPING; //regenerate lookup tables
	}
}

void onRoast(jjPLAYER@, jjPLAYER@) {
	hueStepsYetToTake += 32;
}