mirror of https://github.com/deater/tb1.git
snes: have level_1 load the star background
This commit is contained in:
Vince Weaver
parent
60997734cb
commit
0ee9573daa
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@ -12,6 +12,7 @@ tb1_snes.o: tb1_snes.s \
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snes_init.s opening.s title_screen.s level_1.s \
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svmwgraph.s \
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tb1_title.tiles tb1_opening.tiles level1_background.tiles \
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star_background.tiles \
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level1_pal0.sprites \
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tbfont.inc
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$(AS) -t none -o tb1_snes.o -l tb1_snes.lst -c tb1_snes.s
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@ -21,13 +22,16 @@ level1_pal0.sprites: graphics/level1_pal0.pcx tools/pcx_to_tiles_4bpp
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./tools/pcx_to_tiles_4bpp level1_pal0 < graphics/level1_pal0.pcx > level1_pal0.sprites
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level1_background.tiles: graphics/level1_background.pcx ./tools/pcx_to_compressed_tilemap
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./tools/pcx_to_compressed_tilemap level1_background 4 < graphics/level1_background.pcx > level1_background.tiles
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./tools/pcx_to_compressed_tilemap level1_background 4 0 < graphics/level1_background.pcx > level1_background.tiles
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star_background.tiles: graphics/star_background.pcx ./tools/pcx_to_compressed_tilemap
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./tools/pcx_to_compressed_tilemap star_background 4 1 < graphics/star_background.pcx > star_background.tiles
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tb1_opening.tiles: graphics/vmw_logo.pcx ./tools/pcx_to_compressed_tilemap
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./tools/pcx_to_compressed_tilemap vmw_logo 8 < graphics/vmw_logo.pcx > tb1_opening.tiles
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./tools/pcx_to_compressed_tilemap vmw_logo 8 0 < graphics/vmw_logo.pcx > tb1_opening.tiles
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tb1_title.tiles: graphics/tb1_title.pcx ./tools/pcx_to_compressed_tilemap
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./tools/pcx_to_compressed_tilemap title_screen 8 < graphics/tb1_title.pcx > tb1_title.tiles
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./tools/pcx_to_compressed_tilemap title_screen 8 0< graphics/tb1_title.pcx > tb1_title.tiles
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checksum.inc: ./tools/snes_checksum tb1_snes.sfc
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./tools/snes_checksum < tb1_snes.sfc > checksum.inc
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@ -1,2 +1,2 @@
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.word $3fcf ; Complement of checksum
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.word $c030 ; Unsigned 16-bit sum of ROM
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.word $a832 ; Complement of checksum
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.word $57cd ; Unsigned 16-bit sum of ROM
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@ -24,22 +24,33 @@ level_1:
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; Setup Background
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;==========================
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; we want the BG1 Tilemap to start at VRAM $e000
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; we want the BG1 Tilemap to start at VRAM $f000
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; Format is
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; aaaa aass a is shifted by 10 for address
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; ss = size of screen in tiles 00 = 32x32
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;
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; 0111 0000
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; 0111 1000
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lda #$70 ; BG1 Tilemap starts at VRAM $e000/2
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lda #$78 ; BG1 Tilemap starts at VRAM $f000/2
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sta $2107 ; bg1 src
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; we want the BG2 Tilemap to start at VRAM $d000
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; Format is
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; aaaa aass a is shifted by 10 for address
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; ss = size of screen in tiles 10 = 32x64
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;
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; 0110 1010
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lda #$6a ; BG2 Tilemap starts at VRAM $d000/2
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sta $2108 ; bg2 src
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; aaaa bbbb a= BG2 tiles, b= BG1 tiles
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; bbbb<<13
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; 0000 0000
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; our BG1 tiles are stored starting in VRAM $0000
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lda #$02
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lda #$32 ; bg2 tile data starts at VRAM 5000/2
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sta $210b ; bg1 tile data starts at VRAM 4000/2
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@ -70,7 +81,7 @@ level_1:
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;===================================
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; Load Level1 Tile Map
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;===================================
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ldx #$7000 ;
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ldx #$7800 ;
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stx $2116 ; set adddress for VRAM read/write
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; multiply by 2, so 0xe000
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@ -81,6 +92,46 @@ level_1:
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;===============================
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; Load Level1 Star Palette
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;===============================
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lda #16
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sta $2121 ; start with color 16
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ldy #(16*2) ; we have 16 colors
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lda #^star_background_palette
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ldx #.LOWORD(star_background_palette)
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jsr svmw_load_palette
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;======================
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; Load Level1 Star Data
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;======================
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ldx #$3000 ;
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stx $2116 ; set adddress for VRAM read/write
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; multiply by 2, so 0x4000
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lda #^star_background_tile_data
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ldx #.LOWORD(star_background_tile_data)
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ldy #$4420 ; Copy 545 tiles, which are 32 bytes each
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; 8x8 tile with 4bpp
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; (545*32) = 17,440 = 0x4420
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jsr svmw_load_vram
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;===================================
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; Load Level1 Star Tile Map
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;===================================
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ldx #$6800 ;
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stx $2116 ; set adddress for VRAM read/write
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; multiply by 2, so 0xd000
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lda #^star_background_tilemap
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ldx #.LOWORD(star_background_tilemap)
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ldy #$1000 ; 32x64 = 2048 * 2 = 0x1000
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jsr svmw_load_vram
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;==========================
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; Setup Sprite
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;==========================
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@ -128,15 +179,15 @@ level_1:
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lda #192 ; set sprite 0 Y to 100
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sta $0201
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; Xxxxxxxxx yyyyyyy cccccccc vhoopppN
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; Xxxxxxxxx yyyyyyy cccccccc vhoo pppN
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;
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stz $0202 ; set sprite 0
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; 00000000
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; no flip, priority 0, N=0 palette=0 (128)
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; 0010 0000
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; no flip, priority 2, N=0 palette=0 (128)
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lda #$00
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lda #$20
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sta $0203
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; X high bit = 0 for sprite 0
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@ -169,7 +220,7 @@ level1_setup_video:
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lda #$01 ; 8x8 tiles, Mode 1
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sta $2105
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lda #$11 ; Enable BG1 and sprites
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lda #$13 ; Enable BG1,BG2, and sprites
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sta $212c
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stz $212d ; disable subscreen
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@ -293,4 +344,4 @@ done_vblank:
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; sprite data
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.include "level1_pal0.sprites"
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.include "level1_background.tiles"
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.include "star_background.tiles"
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