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Routines |
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Draw the 1UP and 2UP lives counts and the life UDG, or spaces if a player has none.
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Controller for 1UP lives.
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| DisplayPlayerLives | 35151 | LD HL,64 | Call ScreenAddress with the pixel co-ordinates 0064 to get the 1UP lives screen address. | |
| 35154 | CALL ScreenAddress | |||
| 35157 | CALL FetchLives_1UP | A=1UP lives remaining (by calling FetchLives_1UP). | ||
| 35160 | AND A | If 1UP lives are zero, jump to Handler1UPNoLives. | ||
| 35161 | JR Z,Handler1UPNoLives | |||
| 35163 | CALL HandlerDisplayLives | Else, there are lives to display so call HandlerDisplayLives. | ||
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Controller for 2UP lives.
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| Controller2UPLives | 35166 | LD HL,176 | Call ScreenAddress with the pixel co-ordinates 0176 to get the 2UP lives screen address. | |
| 35169 | CALL ScreenAddress | |||
| 35172 | CALL FetchLives_2UP | A=2UP lives remaining (by calling FetchLives_2UP). | ||
| 35175 | AND A | If 2UP lives are zero, jump to Handler2UPNoLives. | ||
| 35176 | JR Z,Handler2UPNoLives | |||
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Handles displaying the lives count and UDG character.
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| HandlerDisplayLives | 35178 | ADD A,48 | Add 48 to convert to an ASCII character (starting at "0"). | |
| 35180 | CALL PrintScreen | Call PrintScreen. | ||
| 35183 | LD DE,53585 | DE=UDG_Life. | ||
| 35186 | PUSH BC | Stash BC and DE on the stack. | ||
| 35187 | PUSH DE | |||
| 35188 | JP PrintCharacter_Draw | Jump to PrintCharacter_Draw. | ||
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1UP has no lives.
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| Handler1UPNoLives | 35191 | CALL Handler2UPNoLives | Call Handler2UPNoLives. | |
| 35194 | JR Controller2UPLives | Jump to Controller2UPLives. | ||
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2UP has no lives.
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| Handler2UPNoLives | 35196 | LD A,32 | A=ASCII " " (SPACE). | |
| 35198 | CALL PrintScreen | Call PrintScreen. | ||
| 35201 | LD A,32 | A=ASCII " " (SPACE). | ||
| 35203 | JP PrintScreen | Jump to PrintScreen. | ||
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Return the 1UP player's lives left.
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| FetchLives_1UP | 35206 | LD A,(24165) | If Flag_ActivePlayer is not zero then jump to InactivePlayerLives. | |
| 35209 | AND A | |||
| 35210 | JR NZ,InactivePlayerLives | |||
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Return currently active players lives left.
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| ActivePlayerLives | 35212 | LD A,(24225) | A=*ActivePlayer_Lives. | |
| 35215 | RET | Return. | ||
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Return inactive players lives left.
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| InactivePlayerLives | 35216 | LD A,(24229) | A=*InactivePlayer_Lives. | |
| 35219 | RET | Return. | ||
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Return the 2UP player's lives left.
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| FetchLives_2UP | 35220 | LD A,(24165) | If Flag_ActivePlayer is zero then jump to InactivePlayerLives. | |
| 35223 | AND A | |||
| 35224 | JR Z,InactivePlayerLives | |||
| 35226 | JR ActivePlayerLives | Jump to ActivePlayerLives. | ||
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