Splitting Images: Routine at 55678

55678: Handler: Is Level Complete?

Used by the routine at StartGame.
Handler_IsLevelComplete	55678	LD HL,57968	HL=InGame_Tiles.
	55681	LD D,1	D is used as a tile checker - so initialise it with 1 which is the "good" value of the first tile.
	55683	LD B,4	Set a row counter in B of 4 rows to check.
CheckRow_Loop	55685	PUSH BC	Stash the row counter on the stack.
	55686	LD B,5	Set a counter in B of the number of tiles to check per row.
CheckTiles_Loop	55688	LD A,(HL)	Load the tile value into A.
	55689	CP D	Jump to BailOrderIncorrect if the tile value and the tile checker value don't match.
	55690	JR NZ,BailOrderIncorrect
	55692	INC HL	Move to the next tile.
	55693	INC D	Increment the tile checker by one.
	55694	DJNZ CheckTiles_Loop	Decrease the tile counter by one and loop back to CheckTiles_Loop until all of the tiles in this row have been checked.
	55696	INC HL	Increment HL by two.
	55697	INC HL	Increment HL by two.
	55698	POP BC	Restore the row counter from the stack.
	55699	DJNZ CheckRow_Loop	Decrease the row counter by one and loop back to CheckRow_Loop until counter is zero.
The level is complete! All tiles are in order so jump to LevelComplete.
	55701	POP BC	Housekeeping; clean up the stack.
	55702	JP LevelComplete	Jump to LevelComplete.
The level isn't complete, so discard the row counter on the stack and return.
BailOrderIncorrect	55705	POP BC	Housekeeping; clean up the stack.
	55706	RET	Return.