85 lines
2.3 KiB
JavaScript
85 lines
2.3 KiB
JavaScript
|
//
|
||
|
|
// nitro.js
|
||
|
|
//--------------------
|
||
|
|
// General purpose functions for nitro formats, eg. NSBTX or NSBMD
|
||
|
|
// by RHY3756547
|
||
|
|
//
|
||
|
|
// includes: gl-matrix.js (glMatrix 2.0)
|
||
|
|
//
|
||
|
|
|
||
|
|
window.nitro = new function() {
|
||
|
|
this.readHeader = function(view) { //input: DataView with base offset at header position
|
||
|
|
var stamp = readChar(view, 0x0)+readChar(view, 0x1)+readChar(view, 0x2)+readChar(view, 0x3);
|
||
|
|
var unknown1 = view.getUint32(0x4, true);
|
||
|
|
var filesize = view.getUint32(0x8, true);
|
||
|
|
var headsize = view.getUint16(0xC, true);
|
||
|
|
var numSections = view.getUint16(0xE, true);
|
||
|
|
var sectionOffsets = [];
|
||
|
|
for (var i=0; i<numSections; i++) {
|
||
|
|
sectionOffsets.push(view.getUint32(0x10+i*4, true));
|
||
|
|
}
|
||
|
|
return {
|
||
|
|
stamp: stamp,
|
||
|
|
unknown1: unknown1,
|
||
|
|
filesize: filesize,
|
||
|
|
headsize: headsize,
|
||
|
|
numSections: numSections,
|
||
|
|
sectionOffsets: sectionOffsets
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
this.read3dInfo = function(view, offset, dataHandler) {
|
||
|
|
var baseOff = offset;
|
||
|
|
offset += 1; //skip dummy
|
||
|
|
var numObjects = view.getUint8(offset++);
|
||
|
|
var secSize = view.getUint16(offset, true);
|
||
|
|
offset += 2;
|
||
|
|
//unknown block. documentation out of 10
|
||
|
|
var uhdSize = view.getUint16(offset, true);
|
||
|
|
offset += 2;
|
||
|
|
var usecSize = view.getUint16(offset, true);
|
||
|
|
offset += 2;
|
||
|
|
var unknown = view.getUint32(offset, true); //usually 0x0000017F
|
||
|
|
offset += 4;
|
||
|
|
var objectUnk = []
|
||
|
|
for (var i=0; i<numObjects; i++) {
|
||
|
|
var uk1 = view.getUint16(offset, true);
|
||
|
|
var uk2 = view.getUint16(offset+2, true);
|
||
|
|
objectUnk.push({uk1: uk1, uk2: uk2});
|
||
|
|
offset += 4;
|
||
|
|
}
|
||
|
|
//info block
|
||
|
|
var ihdSize = view.getUint16(offset, true);
|
||
|
|
offset += 2;
|
||
|
|
var isecSize = view.getUint16(offset, true);
|
||
|
|
offset += 2;
|
||
|
|
var objectData = []
|
||
|
|
for (var i=0; i<numObjects; i++) {
|
||
|
|
var data = dataHandler(view, offset, baseOff, i); //must return object with "nextoff" as offset after reading data
|
||
|
|
objectData.push(data)
|
||
|
|
offset = data.nextoff;
|
||
|
|
}
|
||
|
|
|
||
|
|
var names = []
|
||
|
|
for (var i=0; i<numObjects; i++) {
|
||
|
|
var name = "";
|
||
|
|
for (var j=0; j<16; j++) {
|
||
|
|
name += readChar(view, offset++)
|
||
|
|
}
|
||
|
|
names.push(name);
|
||
|
|
}
|
||
|
|
|
||
|
|
return {
|
||
|
|
numObjects: numObjects,
|
||
|
|
unknown: unknown,
|
||
|
|
objectUnk: objectUnk,
|
||
|
|
objectData: objectData,
|
||
|
|
names: names,
|
||
|
|
nextoff: offset
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function readChar(view, offset) {
|
||
|
|
return String.fromCharCode(view.getUint8(offset));
|
||
|
|
}
|
||
|
|
}
|