Routines
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32549: Draw the intro sequence landscape
Draws the graphics for the landscape silhouette used the intro sequence. Graphics are stored at 33439.
intro inner border
Draw a 1-character high middle strip of the landscape containing most of the rolling hills
32549 LD A,26 Strip of landscape, 26 columns wide
32551 LD (35759),A
32554 LD A,1 1 (character) row high
32556 LD (35760),A
32559 LD DE,33439 Pointer to landscape graphics data
32562 LD HL,16611 Set screen display address to the left/middle of the screen
32565 CALL 33267 Draw graphics
Draw the small trilith-shaped structure over on the left of the scene
32568 LD A,1 Just 1 character to draw so 1 column, 1 row
32570 LD (35759),A
32573 LD A,1
32575 LD (35760),A
32578 LD DE,33655 Point to graphics data
32581 LD HL,16585 Point to screen location to draw at
32584 CALL 33267 Draw on screen
Draw top section of the thin vertical structure in middle of landscape
32587 LD A,1 Just 1 character to draw (1 column, 1 row)
32589 LD (35759),A
32592 LD A,1
32594 LD (35760),A
32597 LD DE,33663 Point at graphics data
32600 LD HL,16592 Point to place on screen to draw at
32603 CALL 33267 Draw graphics
Cyan highlighted structure on the right of the screen
32606 LD A,4 4 columns
32608 LD (35759),A
32611 LD A,1 1 row
32613 LD (35760),A
32616 LD DE,33671 Point at graphics data
32619 LD HL,16596 Point at place on screen to draw at
32622 CALL 33267 Draw to screen
Highest highlighted structure visible over on the right
32625 LD A,2 2 columns
32627 LD (35759),A
32630 LD A,1 1 row
32632 LD (35760),A
32635 LD DE,33703 Point at graphics data
32638 LD HL,16565 Point at place on screen to draw at
32641 CALL 33267 Draw to screen
Set the 2 cyan attributes on the structure over on the right
32644 LD HL,22709 First highlight on slightly higher part
32647 LD (HL),13 Cyan colour (INK 5, PAPER 1)
32649 LD HL,22740 ...and the part to its lower-left
32652 LD (HL),13
Lower part of tall cyan highlighted tower structure
32654 LD A,4 4 columns
32656 LD (35759),A
32659 LD A,1 1 row
32661 LD (35760),A
32664 LD DE,33719 Point at graphics data
32667 LD HL,18447 Point at place on screen to draw at
32670 CALL 33267 Draw to screen
Set the highlight colour and a few other attributes alongside it
32673 LD HL,22799 The bottom of the tower cyan highlight/reflection just drawn
32676 LD (HL),5 Set to cyan (INK 5, PAPER 0)
32678 INC HL Set the 3 squares to the right of it to blue/black (INK 0, PAPER 1)
32679 LD (HL),8
32681 INC HL
32682 LD (HL),8
32684 INC HL
32685 LD (HL),8
Draw the moon
32687 LD HL,16525 Point at place on screen to draw at
32690 LD A,1 Just 1 character so 1 column, 1 row
32692 LD (35760),A
32695 LD (35759),A
32698 LD DE,33751 Point at moon graphic data
32701 CALL 33267 Draw it on screen
Stars in top right of screen
32704 LD HL,16505 Drawing position set to top right of scene
32707 LD A,1 1 row
32709 LD (35760),A
32712 LD A,3 3 columns (characters) to draw
32714 LD (35759),A
32717 LD DE,33759 Point at stars graphic data
32720 CALL 33267 Draw them on screen
Stars in top left of screen
32723 LD HL,16517 Draw position in top left of scene
32726 LD A,1 Just 1 character - 1 row, 1 column
32728 LD (35760),A
32731 LD (35759),A
32734 LD DE,33784 Point at graphics data
32737 CALL 33267 Draw them on screen
Cyan moon reflection colour and then graphic on right of small trilith
32740 LD HL,22730 Attribute display address location
32743 LD (HL),13 Cyan colour (INK 5, PAPER 1)
32745 LD HL,16586 Screen address display location for graphic
32748 LD A,1 1 character (1 row, 1 column)
32750 LD (35760),A
32753 LD (35759),A
32756 LD DE,33792 Point at graphics data
32759 CALL 33267 Draw on screen
Cyan moon reflection colour and then graphic on top of small trilith
32762 LD HL,22697 Attribute display address location
32765 LD (HL),13 Cyan colour (INK 5, PAPER 1)
32767 LD HL,16553
32770 LD A,1 1 character (1 row, 1 column)
32772 LD (35760),A
32775 LD (35759),A
32778 LD DE,33800 Point at graphics data
32781 CALL 33267 Draw on screen
Cyan moon reflection colour and then graphic on left of small vertical tower
32784 LD HL,22767 Second character square of tower screen attribute display position
32787 LD (HL),13 Cyan colour (INK 5, PAPER 1)
32789 LD HL,22735 Top character square of tower screen attribute display position
32792 LD (HL),13 Cyan (INK 5, PAPER 1)
Next, the graphics
32794 LD A,2 2 (vertical) rows
32796 LD (35760),A
32799 LD A,1 1 (character-wide) column
32801 LD (35759),A
32804 LD HL,33808 Point at graphics data
32807 LD (31940),HL
32810 LD HL,16591
32813 CALL 33319 Draw on screen
This scene is used both for the intro screen for a new game and the screen where you load a saved game.
32816 LD A,(35754) Retrieve the Menu Controls option selected (1-4)
32819 LD E,A ...and store it in the E register
32820 LD A,(35755) Retrieve the game flag (0 = New Game, 1 = Existing Game)
32823 LD D,A ...and store it in the D register
32824 RET
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