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62714: Open the lip of the speech bubble
Used by the routine at 29518. Removes the solid line above the lip of the speech bubble, thus 'opening' it.
Input
DE Coordinates of the speech bubble lip
62714 LD A,E UDG references 248-255 correspond to the 8 UDGs that make up the bottom half of the speech bubble; set E to the reference of the UDG that is above the lip
62715 AND 7
62717 ADD A,248
62719 LD E,A
62720 LD C,3 We need to adjust the UDGs for each third of the skool
62722 LD H,127
62724 LD B,8 8 UDGs make up the bottom half of the speech bubble
62726 LD A,H Point HL at the bottom pixel row of the UDG for the bottom-left corner of the speech bubble
62727 ADD A,B
62728 LD H,A
62729 LD A,E
62730 LD L,248
62732 LD (HL),126 Open the bottom edge (129=10000001) of this speech bubble UDG if the lip is underneath, or close it (126=01111110) otherwise
62734 CP L
62735 JR NZ,62739
62737 LD (HL),129
62739 INC L Move HL to the next UDG along the bottom of the speech bubble
62740 DJNZ 62732 Jump back until the lip is open and the others are closed
62742 DEC C Next third of the skool
62743 JR NZ,62724 Jump back until the UDGs for each third of the skool have been modified
62745 JP 29394 Update the SRB for the middle 6 UDG columns of the bubble
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