;===================================================================
;BLASTOPIA (C) 2018 THE NEW DIMENSION
;PROGRAMMING, GRAPHICS, SFX AND MUSIC BY RICHARD BAYLISS
;http://tnd64.unikat.sk
;===================================================================

;Some variables
 
SCRN = $0400							;Screen RAM address being used
COLR = $d800							;Colour RAM address used

;Music parameters. Please note that for this project 
;I decided to move the music data to $8F00, rather 
;than $1000 because the music didn't fit between 
;$1000-$2000.

TITLEMUSIC = 0						;Music for Front End
INGAMEMUSIC = 1						;Main in game music
ENDMUSIC = 2							;Game ending music

MUSICINIT = $8F00 				;init music address
MUSICPLAY = $8F03 				;play music address
SFXINIT = $8F06		  			;Goat tracker built in SFX player

;Map row game areas - Where the map row
;results to the screen row that should
;be read. 
;
;MAPPROW1 = GAMEMAP + x * 256

MAPROW1 = GAMEMAP					;MAPROWx represents the 
MAPROW2 = GAMEMAP+$100		;row, that should be read 
MAPROW3 = GAMEMAP+$200		;and the positioned on to 
MAPROW4 = GAMEMAP+$300		;the game screen. 
MAPROW5 = GAMEMAP+$400
MAPROW6 = GAMEMAP+$500		;MAPROWx+$yyy = the next
MAPROW7 = GAMEMAP+$600		;256 bytes, which is also
MAPROW8 = GAMEMAP+$700		;the next map row to be 
MAPROW9 = GAMEMAP+$800		;drawn on to the next screen.
MAPROW10 = GAMEMAP+$900
MAPROW11 = GAMEMAP+$0A00
MAPROW12 = GAMEMAP+$0B00
MAPROW13 = GAMEMAP+$0C00
MAPROW14 = GAMEMAP+$0D00
MAPROW15 = GAMEMAP+$0E00
MAPROW16 = GAMEMAP+$0F00
MAPROW17 = GAMEMAP+$1000
MAPROW18 = GAMEMAP+$1100
MAPROW19 = GAMEMAP+$1200
MAPROW20 = GAMEMAP+$1300

;Set up interval limitations for alien 
;spawning.

ALIEN1SPAWNLIMIT = 20			;Interval values during alien spawn waiti ng
ALIEN2SPAWNLIMIT = 40
ALIEN3SPAWNLIMIT = 60
ALIEN4SPAWNLIMIT = 80
ALIEN5SPAWNLIMIT = 100

;Set up values/addresses for alien formation
;tables.

f01x = formation01 				;Assign formation table X position 
f01y = formation01+$100 	;Assign formation table Y position
f02x = formation02				
f02y = formation02+$100
f03x = formation03
f03y = formation03+$100
f04x = formation04
f04y = formation04+$100
f05x = formation05
f05y = formation05+$100
f06x = formation06
f06y = formation06+$100
f07x = formation07
f07y = formation07+$100
f08x = formation08
f08y = formation08+$100
f09x = formation09
f09y = formation09+$100
f10x = formation10
f10y = formation10+$100
f11x = formation11
f11y = formation11+$100
f12x = formation12
f12y = formation12+$100
f13x = formation13
f13y = formation13+$100
f14x = formation14
f14y = formation14+$100
f15x = formation15
f15y = formation15+$100
f16x = formation16
f16y = formation16+$100
f17x = formation17
f17y = formation17+$100
f18x = formation18
f18y = formation18+$100
f19x = formation19
f19y = formation19+$100
f20x = formation20
f20y = formation20+$100
f21x = formation21
f21y = formation21+$100
f22x = formation22
f22y = formation22+$100
f23x = formation23
f23y = formation23+$100
f24x = formation24
f24y = formation24+$100

MAPSCROLLSPEED = 2 				;Speed of scrolling map 

ZP = $10									;Zeropage for sprite/bgr collision 

;Charset values, representing collision chars that 
;need special code for events.

STAR1 = 0 								;Star char 1
STAR2 = 1 								;Star char 2
STAR3 = 2 								;Star char 3
STAR4 = 3 								;Star char 4
LANDINGPAD1 = 35 					;Landing pad char 1
LANDINGPAD2 = 36 					;Landing pad char 2
LANDINGPAD3 = 37 					;Landing pad char 3
LANDINGPAD4 = 39 					;Landing pad char 4
LANDINGPAD5 = 40 					;Landing pad char 5
LAZERBEAM = 42	 					;Lazer char

;Sprite to sprite collision co-ordinate read 
;areas inside sprite range of object. The values 
;are set to create a ONE SIZE FIT ALL based collision.

SHIPAREALEFT = 6					
SHIPAREARIGHT = 12		
SHIPAREATOP = 12
SHIPAREABOTTOM = 24

BULLETAREALEFT = 6 
BULLETAREARIGHT = 12
BULLETAREATOP = 12
BULLETAREABOTTOM = 24

;Exomizer de-cruncher LOW/HI byte addresses 
;to store crunched level map data to (See in 
;decruncher LDA $FFFF - as that is the SM 
;address to decrunch backwards from.

DECRUNCH = $C400					;Address to run the decruncher
DECRUNCHLO = $C410  			;Low-byte address of decrunch from address 
DECRUNCHHI = $C411  			;Hi-byte address of decrunch from address

;===================================================================