Routines
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29318: Handler: Room 3
Handles room 3 logic. The current level in B controls which objects are initialised or updated on each pass.
Levels Baddies
1 Helicopter
2 Cat, Dog
3 Helicopter, Cat, Dog
4 Helicopter, Cat, Dog, Plane
5+ Helicopter, Cat, Dog, Plane, UFO
Input
B Current level
Handler_Room03 29318 LD A,B Copy the current level into A.
Add a helicopter for every level other than level 2.
29319 LD IX,56008 IX=Sprite02_3Wide_X_Position.
29323 PUSH AF Stash the current level on the stack.
29324 CP 2 Call Handler_Helicopter if this is not level 2.
29326 CALL NZ,Handler_Helicopter
Add a cat to this room for any level other than level 1.
29329 POP AF Restore the current level from the stack.
29330 LD IX,56012 IX=Sprite03_3Wide_X_Position.
29334 CP 1 Is this level 1?
29336 PUSH AF Stash the current level on the stack.
29337 CALL NZ,Handler_Cat Call Handler_Cat if this is not level 1.
Add a dog to this room for any level other than level 1.
29340 POP AF Restore the current level from the stack.
29341 LD IX,56016 IX=Sprite04_3Wide_X_Position.
29345 PUSH AF Stash the current level on the stack.
29346 CP 1 Call Handler_Dog if this is not level 1.
29348 CALL NZ,Handler_Dog
Add the plane if this is level 4 or higher.
29351 POP AF Restore the current level from the stack.
29352 LD IX,56024 IX=Sprite06_3Wide_X_Position.
29356 CP 4 Is this level 4?
29358 PUSH AF Stash the current level on the stack.
29359 CALL NC,Handler_Plane Call Handler_Plane if this is level 5 or higher.
Add a UFO if this is level 5.
29362 POP AF Restore the current level from the stack.
29363 LD IX,56028 IX=Sprite07_3Wide_X_Position.
29367 CP 5 Call Handler_UFO if this is level 5.
29369 CALL Z,Handler_UFO
29372 RET Return.
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