Routines
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DC3F: Test Object Match
Used by the routine at TestGroupObjects.
Tests whether an object is at the position that is stored at RestartCandidate and E4C8, and if it is then clears the flag at E4C7.
Input
IY The object
TestObjectMatch DC3F LD HL,($5CB8) The high nibble of the object's first byte, beside the word at TitleAnimationFrame.
DC42 LD A,(IY+$00)
DC45 AND $F0
DC47 LD L,A
DC48 LD DE,($E4C6) It matches the stored position at RestartCandidate.
DC4C AND A
DC4D SBC HL,DE
DC4F JR NZ,TestObjectMatch_Skip
DC51 LD HL,($5CB9) The same byte shifted up by four, beside the cell position.
DC54 LD A,(IY+$00)
DC57 ADD A,A
DC58 ADD A,A
DC59 ADD A,A
DC5A ADD A,A
DC5B LD L,A
DC5C LD DE,($E4C8) It matches the stored position at E4C8.
DC60 AND A
DC61 SBC HL,DE
DC63 JR NZ,TestObjectMatch_Skip
DC65 XOR A Clear the flag at E4C7.
DC66 LD ($E4C7),A
TestObjectMatch_Skip DC69 RET Return.
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