Routines
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32812: Game Restart
Used by the routine at 62270.
Game_Restart 32812 CALL CreateWindow Call CreateWindow.
32815 CALL HallOfFame Call HallOfFame.
32818 CALL CreateWindow Call CreateWindow.
This entry point is used by the routine at GameInitialisation.
GameSelect_Loop 32821 CALL GameMenu Call GameMenu.
32824 LD A,247 Read from the keyboard;
Port Number Bit
0 1 2 3 4
247 1 2 3 4 5
32826 OUT (253),A
32828 IN A,(254)
32830 CPL Flip the bits.
32831 LD E,A E=A.
32832 LD A,(24064) A=GameOptions.
32835 LD (24188),A Write A to 24188.
Handle 1UP selection.
GameSelect_CheckP1 32838 BIT 0,E Has key "1" been pressed? ("1 PLAYER GAME").
32840 JR Z,GameSelect_CheckP2 If not jump to GameSelect_CheckP2.
32842 RES 0,A Set player count = 1.
Handle 2UP selection.
GameSelect_CheckP2 32844 BIT 1,E Has key "2" been pressed? ("2 PLAYER GAME").
32846 JR Z,GameSelect_CheckKeyboard If not jump to GameSelect_CheckKeyboard.
32848 SET 0,A Set player count = 2.
Handle Keyboard selection.
GameSelect_CheckKeyboard 32850 BIT 2,E Has key "3" been pressed? ("3 KEYBOARD").
32852 JR Z,GameSelect_CheckKempston If not jump to GameSelect_CheckKempston.
32854 AND %11111001 Set control method = keyboard.
Handle Kempston Joystick selection.
GameSelect_CheckKempston 32856 BIT 3,E Has key "4" been pressed? ("4 KEMPSTON JOYSTICK").
32858 JR Z,GameSelect_CheckCursor If not jump to GameSelect_CheckCursor.
32860 AND %11111001 Strip out the control method bits.
32862 OR %00000010 Set control method = kempston.
Handle Cursor Joystick selection.
GameSelect_CheckCursor 32864 BIT 4,E Has key "5" been pressed? ("5 CURSOR JOYSTICK").
32866 JR Z,GameSelect_StartGame If not jump to GameSelect_StartGame.
32868 AND %11111001 Strip out the control method bits.
32870 OR %00000100 Set control method = cursor.
Handle starting a new game.
GameSelect_StartGame 32872 LD (24064),A Store A at GameOptions.
32875 LD A,239 Read from the keyboard;
Port Number Bit
0 1 2 3 4
239 0 9 8 7 6
32877 OUT (253),A
32879 IN A,(254)
32881 CPL Flip the bits.
32882 BIT 4,A Has key "6" been pressed? ("6 START GAME").
32884 JP NZ,StartGame If so, jump to StartGame.
32887 LD A,(24064) C=GameOptions.
32890 LD C,A
32891 LD A,(24188) A=24188.
32894 XOR C
32895 PUSH AF Stash AF on the stack.
32896 BIT 0,A
32898 CALL NZ,33021
32901 POP AF Restore AF from the stack.
32902 AND %00000110 Keep only bits 1-2.
32904 JR Z,Game_Restart_0
32906 LD DE,47774 DE=47774.
32909 LD A,C A=C.
32910 AND %00000110 Keep only bits 1-2.
32912 LD L,A Create an offset in HL.
32913 LD H,0
32915 ADD HL,DE HL=47774 + offset.
32916 LD E,(HL) DE=address held at HL.
32917 INC HL
32918 LD D,(HL)
32919 CALL 47548 Call 47548.
Handle flashing each selection.
Game_Restart_0 32922 LD HL,33039 HL=GameSelection_Attributes+1 (i.e. ignoring "Game Selection" as it doesn't flash).
32925 LD A,(24064) C=GameOptions.
32928 LD C,A
32929 BIT 0,C
32931 JR NZ,Game_Restart_3
32933 CALL MenuAttributeSetUnset
MenuAttrHandler 32936 LD B,3 B=3.
32938 LD A,C
32939 RRCA
MenuAttrHandler_Loop 32940 AND %00000011
32942 JR Z,Game_Restart_2
32944 CALL MenuAttributeUnSetFirst
Game_Restart_1 32947 DEC A
32948 DJNZ MenuAttrHandler_Loop
32950 JP GameSelect_Loop Jump to GameSelect_Loop.
Game_Restart_2 32953 CALL MenuAttributeSetFirst Call MenuAttributeSetFirst.
32956 JR Game_Restart_1 Jump to Game_Restart_1.
Game_Restart_3 32958 CALL MenuAttributeUnsetSet Call MenuAttributeUnsetSet.
32961 JR MenuAttrHandler Jump to MenuAttrHandler.
Set the first menu item, unset the second.
MenuAttributeSetUnset 32963 SET 7,(HL) Set the FLASH attribute for the menu attribute.
32965 INC HL Move onto the next menu attribute.
MenuAttributeUnSetFirst 32966 RES 7,(HL) Unset the FLASH attribute for the menu attribute.
32968 INC HL Move onto the next menu attribute.
32969 RET Return.
Unset the first menu item, set the second.
MenuAttributeUnsetSet 32970 RES 7,(HL) Unset the FLASH attribute for the menu attribute.
32972 INC HL Move onto the next menu attribute.
MenuAttributeSetFirst 32973 SET 7,(HL) Set the FLASH attribute for the menu attribute.
32975 INC HL Move onto the next menu attribute.
32976 RET Return.
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