Routines
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38911: Chase Player
Used by the routine at RunType19Behaviour.
Behaviour code used for several types of object (see RunObjectBehaviour). Makes the object accelerate towards the player and then halves the acceleration.
Input
IX Address of the object
ChasePlayer 38911 PUSH IY Stash IY on the stack.
38913 LD IY,51429 Use the player's object.
38917 CALL AccelerateTowardsTarget Accelerate towards the player.
38920 POP IY Bring IY back off the stack.
38922 SET 7,(IX+22) Set bit 7 of the third state byte of the object.
38926 LD H,(IX+11) Fetch the horizontal acceleration of the object.
38929 LD L,(IX+12)
38932 SRA H Halve it twice.
38934 RR L
38936 SRA H
38938 RR L
38940 LD (IX+11),H Store it.
38943 LD (IX+12),L
38946 LD H,(IX+14) Fetch the vertical acceleration of the object.
38949 LD L,(IX+15)
38952 SRA H Halve it twice.
38954 RR L
38956 SRA H
38958 RR L
38960 LD (IX+14),H Store it.
38963 LD (IX+15),L
38966 RET Return.
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