Very simple asset pipeline to transform PNG impage into raw binary files to load in the engine
This commit is contained in:
Lucas Scharenbroich
parent
62233d4abc
commit
f2d82f810d
|
|
@ -15,3 +15,4 @@ REM Cadius does not overwrite files, so clear the root folder first
|
|||
REM Now copy files and folders as needed
|
||||
%CADIUS% ADDFILE %IMAGE% %FOLDER% src\\GTETestApp
|
||||
%CADIUS% ADDFILE %IMAGE% %FOLDER% emu\\test.pic
|
||||
%CADIUS% ADDFILE %IMAGE% %FOLDER% emu\\bg1.bin
|
||||
|
|
|
|||
|
|
@ -25,6 +25,12 @@
|
|||
"integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==",
|
||||
"dev": true
|
||||
},
|
||||
"pngjs": {
|
||||
"version": "6.0.0",
|
||||
"resolved": "https://registry.npmjs.org/pngjs/-/pngjs-6.0.0.tgz",
|
||||
"integrity": "sha512-TRzzuFRRmEoSW/p1KVAmiOgPco2Irlah+bGFCeNfJXxxYGwSw7YwAOAcd7X28K/m5bjBWKsC29KyoMfHbypayg==",
|
||||
"dev": true
|
||||
},
|
||||
"watch": {
|
||||
"version": "1.0.2",
|
||||
"resolved": "https://registry.npmjs.org/watch/-/watch-1.0.2.tgz",
|
||||
|
|
|
|||
|
|
@ -14,7 +14,8 @@
|
|||
"test": "npm run build && build-image.bat %npm_package_config_cadius% && %npm_package_config_gsport%",
|
||||
"debug": "%npm_package_config_crossrunner% src\\GTETestApp -Source src\\GTETestApp_S02_MAINSEG_Output.txt -Debug -CompatibilityLayer",
|
||||
"build": "%npm_package_config_merlin32% -V %npm_package_config_macros% src\\App.s",
|
||||
"build:watch": "watch \"npm run build\" src"
|
||||
"build:watch": "watch \"npm run build\" src",
|
||||
"build:assets": "node ./tools/pngtoiigs.js ./assets/gba-cloud-bgnd-8-color.png ./emu/bg1.bin"
|
||||
},
|
||||
"repository": {
|
||||
"type": "git",
|
||||
|
|
@ -27,6 +28,7 @@
|
|||
},
|
||||
"homepage": "https://github.com/lscharen/iigs-game-engine#readme",
|
||||
"devDependencies": {
|
||||
"pngjs": "^6.0.0",
|
||||
"watch": "latest"
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -114,10 +114,15 @@ EvtLoop
|
|||
brl Exit
|
||||
|
||||
:1 cmp #'l'
|
||||
bne :2
|
||||
bne :1_1
|
||||
jsr DoLoadPic
|
||||
bra EvtLoop
|
||||
|
||||
:1_1 cmp #'b'
|
||||
bne :2
|
||||
jsr DoLoadBG1
|
||||
bra EvtLoop
|
||||
|
||||
:2 cmp #'m'
|
||||
bne :3
|
||||
jsr DumpBanks
|
||||
|
|
@ -337,6 +342,16 @@ DoFrame
|
|||
jsr Render ; Render the play field
|
||||
rts
|
||||
|
||||
; Load a binary file in the BG1 buffer
|
||||
DoLoadBG1
|
||||
lda BG1DataBank
|
||||
xba
|
||||
and #$FF00
|
||||
ora #$0001 ; Load directly into the BG1 buffer bank on Page 1
|
||||
ldx #BG1DataFile
|
||||
jsr LoadFile
|
||||
rts
|
||||
|
||||
; Load a simple picture format onto the SHR screen
|
||||
DoLoadPic
|
||||
lda BankLoad
|
||||
|
|
@ -516,8 +531,12 @@ GrafInit
|
|||
jsr SetPalette
|
||||
rts
|
||||
|
||||
DefaultPalette dw $0000,$007F,$0090,$0FF0
|
||||
dw $000F,$0080,$0f70,$0FFF
|
||||
;DefaultPalette dw $0000,$007F,$0090,$0FF0
|
||||
; dw $000F,$0080,$0f70,$0FFF
|
||||
dw $0fa9,$0ff0,$00e0,$04DF
|
||||
dw $0d00,$078f,$0ccc,$0FFF
|
||||
|
||||
DefaultPalette dw $0ADF,$0FF8,$0CD6,$09CF,$0AC6,$08A5,$0FFF,$0694
|
||||
dw $0fa9,$0ff0,$00e0,$04DF
|
||||
dw $0d00,$078f,$0ccc,$0FFF
|
||||
|
||||
|
|
@ -716,6 +735,7 @@ msgLine3 str ' -> Return to Try Again'
|
|||
msgLine4 str ' -> Esc to Quit'
|
||||
|
||||
; Data storage
|
||||
BG1DataFile strl '1/bg1.bin'
|
||||
ImageName strl '1/test.pic'
|
||||
MasterId ds 2
|
||||
UserId ds 2
|
||||
|
|
@ -762,3 +782,7 @@ qtRec adrl $0000
|
|||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -454,7 +454,7 @@ right_odd bit #$000B ; Check the bottom nibble
|
|||
bit #$0040 ; Check bit 6 to distinguish between JMP and all of the LDA variants
|
||||
bne r_is_jmp
|
||||
|
||||
long_1 stal *+4-base
|
||||
long_1 stal *+4-base ; Everything else is a two-byte LDA opcode + PHA
|
||||
dfb $00,$00
|
||||
bra r_is_pea+1
|
||||
|
||||
|
|
@ -546,7 +546,9 @@ long_4 stal *+4-base
|
|||
dfb $00,$00
|
||||
xba
|
||||
sep #$20
|
||||
bra :left_byte
|
||||
pha
|
||||
rep #$20
|
||||
bra even_exit
|
||||
|
||||
:l_is_jmp sec ; Set the C flag (V is always cleared at this point) which tells a snippet to push only the high byte
|
||||
long_5 ldal entry_jmp+1-base
|
||||
|
|
@ -615,3 +617,5 @@ top
|
|||
|
||||
|
||||
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,123 @@
|
|||
const fs = require('fs').promises;
|
||||
const PNG = require("pngjs").PNG;
|
||||
const process = require('process');
|
||||
const { Buffer } = require('buffer');
|
||||
|
||||
main(process.argv.slice(2)).then(
|
||||
() => process.exit(0),
|
||||
(e) => {
|
||||
console.error(e);
|
||||
process.exit(1);
|
||||
}
|
||||
);
|
||||
|
||||
function findColorIndex(png, pixel) {
|
||||
for (let i = 0; i < png.palette.length; i += 1) {
|
||||
const color = png.palette[i];
|
||||
if (color.every((c, idx) => c === pixel[idx])) {
|
||||
return i;
|
||||
}
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
function pngToIIgsBuff(png) {
|
||||
let i = 0;
|
||||
const buff = Buffer.alloc(png.height * (png.width / 2), 0);
|
||||
for (let y = 0; y < png.height; y += 1) {
|
||||
for (let x = 0; x < png.width; x += 1, i += 4) {
|
||||
const pixel = png.data.slice(i, i + 4);
|
||||
const index = findColorIndex(png, pixel);
|
||||
const j = i / 8;
|
||||
|
||||
if (x % 2 === 0) {
|
||||
buff[j] = buff[j] + (16 * index);
|
||||
}
|
||||
else {
|
||||
buff[j] = buff[j] + index
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return buff;
|
||||
}
|
||||
|
||||
function pngToIIgsBuffRepeat(png) {
|
||||
let i = 0;
|
||||
const buff = Buffer.alloc(png.height * png.width, 0);
|
||||
for (let y = 0; y < png.height; y += 1) {
|
||||
for (let x = 0; x < png.width; x += 1, i += 4) {
|
||||
const pixel = png.data.slice(i, i + 4);
|
||||
const index = findColorIndex(png, pixel);
|
||||
const j = y * png.width + Math.floor(x / 2);
|
||||
|
||||
if (index > 15) {
|
||||
console.warn('Pixel index greater than 15. Skipping...');
|
||||
continue;
|
||||
}
|
||||
|
||||
if (x % 2 === 0) {
|
||||
buff[j] = 16 * index;
|
||||
}
|
||||
else {
|
||||
buff[j] = buff[j] | index;
|
||||
}
|
||||
|
||||
buff[j + (png.width / 2)] = buff[j];
|
||||
}
|
||||
}
|
||||
|
||||
return buff;
|
||||
}
|
||||
|
||||
function paletteToIIgs(palette) {
|
||||
const r = Math.round(palette[0] / 17);
|
||||
const g = Math.round(palette[1] / 17);
|
||||
const b = Math.round(palette[2] / 17);
|
||||
|
||||
return '0' + r.toString(16).toUpperCase() + g.toString(16).toUpperCase() + b.toString(16).toUpperCase();
|
||||
}
|
||||
|
||||
async function main(argv) {
|
||||
const data = await fs.readFile(argv[0]);
|
||||
const png = PNG.sync.read(data);
|
||||
|
||||
if (png.colorType !== 3) {
|
||||
console.warn('PNG must be in palette color type');
|
||||
return;
|
||||
}
|
||||
|
||||
if (png.palette.length > 16) {
|
||||
console.warn('Too many colors. Must be 16 or less');
|
||||
return;
|
||||
}
|
||||
|
||||
// Dump the palette in IIgs hex format
|
||||
console.log('Palette:');
|
||||
const hexCodes = png.palette.map(c => '$' + paletteToIIgs(c));
|
||||
console.log(hexCodes.join(','));
|
||||
|
||||
// Just convert a paletted PNG to IIgs memory format
|
||||
let buff = null;
|
||||
if (png.width === 512) {
|
||||
console.log('Converting to BG1 format...');
|
||||
buff = pngToIIgsBuff(png);
|
||||
}
|
||||
|
||||
if (png.width === 256) {
|
||||
console.log('Converting to BG1 format w/repeat...');
|
||||
buff = pngToIIgsBuffRepeat(png);
|
||||
}
|
||||
|
||||
if (png.width === 328) {
|
||||
console.log('Converting to BG0 format...');
|
||||
buff = pngToIIgsBuff(png);
|
||||
}
|
||||
|
||||
if (buff && argv[1]) {
|
||||
console.log(`Writing to output file ${argv[1]}`);
|
||||
await fs.writeFile(argv[1], buff);
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue