Routines
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6F78: Handle Flour Shot
The handler for the flour shot (ID 03), which is fired by Charlie (see ControlCharlie_CreateShot). Byte 04 of the actor is the horizontal speed and byte 05 is the vertical speed. The shot moves until it reaches the right, left, bottom or top of the play area, and then it explodes (see ExplodeFlourShot).
Input
IX Actor
HandleFlourShot 6F78 CALL StoreEntity Record the position of the sprite using StoreEntity.
6F7B LD A,(IX+$01) Fetch the horizontal co-ordinate.
6F7E ADD A,(IX+$04) Add the horizontal speed.
6F81 CP $C4 Jump to ExplodeFlourShot if the shot has reached the right edge.
6F83 JR NC,ExplodeFlourShot
6F85 CP $01 Jump to ExplodeFlourShot if the shot has reached the left edge.
6F87 JR C,ExplodeFlourShot
6F89 LD C,A Keep the new horizontal co-ordinate in C.
6F8A LD A,(IX+$02) Fetch the vertical co-ordinate.
6F8D ADD A,(IX+$05) Add the vertical speed.
6F90 CP $A8 Jump to ExplodeFlourShot if the shot has reached the bottom.
6F92 JR NC,ExplodeFlourShot
6F94 CP $20 Jump to ExplodeFlourShot if the shot has reached the top.
6F96 JR C,ExplodeFlourShot
6F98 LD (IX+$02),A Update the vertical co-ordinate.
6F9B LD (IX+$01),C Update the horizontal co-ordinate.
6F9E CALL DisplayEntity Erase the sprite and draw it in its new position using DisplayEntity.
6FA1 JP ColourSprite Jump to ColourSprite to colour the sprite.
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