Routines
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8F9F: IM2 routine for main game
Used by the routine at 5B5B.
Animate all opening / closing platforms, crushers, water, and Monty dying (if appropriate)
8F9F PUSH AF Save all registers, as this was called by an interrupt.
8FA0 PUSH BC
8FA1 PUSH DE
8FA2 PUSH HL
8FA3 PUSH IX
8FA5 PUSH IY
8FA7 LD A,($9649) Is this room 11?
8FAA CP $11
8FAC CALL Z,$90BD If so, animate the shower.
8FAF LD IX,$8D53 Point IX to game flags.
8FB3 BIT 0,(IX+$00) Can animation happen?
8FB7 JP NZ,$9048 Jump forward if not.
8FBA BIT 1,(IX+$00) Is Monty still alive?
8FBE JP NZ,$8EDD No, so animate the angel.
8FC1 CALL $F7C7 Perform background actions.
8FC4 CALL $8DCD Animate all moving objects.
Some rooms have water in them which needs animating.
8FC7 LD A,($9649) Is this room 08?
8FCA CP $08
8FCC JR NZ,$8FDC No, so jump forward.
Animate the water in room 08.
8FCE LD HL,($EAAA) Get the screen offset for the water's y co-ordinate in room 08.
8FD1 LD DE,$000B Add the x co-ordinate.
8FD4 ADD HL,DE
8FD5 LD C,$05 Width is 5.
8FD7 CALL $90A8 Animate the water and skip the rest of this routine.
8FDA JR $9048
Animate the water in room 09.
8FDC CP $09 Is this room 09?
8FDE JR NZ,$8FEE No, so jump forward.
8FE0 LD HL,($EACA) Get the screen offset for the water's y co-ordinate in room 09.
8FE3 LD DE,$000E Add the x co-ordinate.
8FE6 ADD HL,DE
8FE7 LD C,$12 Width is 12.
8FE9 CALL $90A8 Animate the water and skip the rest of this routine.
8FEC JR $9048
Animate the water in room 0A.
8FEE CP $0A Is this room 0A?
8FF0 JR NZ,$8FFC No, so jump forward.
8FF2 LD HL,($EACA) Get the screen offset for the water's y co-ordinate in room 0A.
8FF5 LD C,$14 Width is 14.
8FF7 CALL $90A8 Animate the water and skip the rest of this routine.
8FFA JR $9048
Animate the water in room 0B.
8FFC CP $0B Is this room 0B?
8FFE JR NZ,$9048 No, so jump foward.
9000 LD HL,($EAAA) Get the screen offset for the first water's y co-ordinate in room 0B.
9003 LD DE,$0006 Set the x co-ordinate.
9006 LD C,$03 Width is 3.
9008 ADD HL,DE Add the x co-ordinate.
9009 CALL $90A8 Animate the water.
900C LD HL,($EA9A) Get the screen offset for the second water's y co-ordinate.
900F LD DE,$000C Add the x co-ordinate.
9012 ADD HL,DE
9013 LD C,$06 Width is 6.
9015 CALL $90A8 Animate the water.
9018 LD HL,($EAAA) Get the screen offset for the third water's y co-ordinate.
901B LD DE,$0015 Add the x co-ordinate.
901E ADD HL,DE
901F LD C,$03 Width is 3.
9021 CALL $90A8 Animate the water.
9024 LD HL,($EAAA) Get the screen offset for the fourth water's y co-ordinate.
9027 LD DE,$001B Add the x co-ordinate.
902A ADD HL,DE
902B LD C,$02 Width is 2.
902D CALL $90A8 Animate the water.
9030 LD HL,($EB2A) Get the screen offset for the fifth water's y co-ordinate.
9033 LD DE,$0015 Add the x co-ordinate.
9036 ADD HL,DE
9037 LD C,$02 Width is 2.
9039 CALL $90A8 Animate the water.
903C LD HL,($EB1A) Get the screen offset for the sixth water's y co-ordinate.
903F LD DE,$0018 Add the x co-ordinate.
9042 ADD HL,DE
9043 LD C,$03 Width is 3.
9045 CALL $90A8 Animate the water.
This entry point is used by the routine at 8EDD, and is a common exit point.
9048 POP IY Restore all registers.
904A POP IX
904C POP HL
904D POP DE
904E POP BC
904F POP AF
9050 EI Re-enable interrupts and return.
9051 RET
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