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add encoder for bspDecal

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This commit is contained in:
Robin Appelman 2017-08-16 23:28:50 +02:00
commit 44394b0320
3 changed files with 122 additions and 8 deletions
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61
src/Parser/Packet/BSPDecal.ts
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@ -2,12 +2,12 @@ import {BitStream} from 'bit-buffer';
import {BSPDecalPacket} from '../../Data/Packet';
import {Vector} from '../../Data/Vector';
function getCoord(stream) {
const hasInt = !!stream.readBits(1);
const hasFract = !!stream.readBits(1);
export function getCoord(stream: BitStream): number {
const hasInt = stream.readBoolean();
const hasFract = stream.readBoolean();
let value = 0;
if (hasInt || hasFract) {
const sign = !!stream.readBits(1);
const sign = stream.readBoolean();
if (hasInt) {
value += stream.readBits(14) + 1;
}
@ -18,13 +18,32 @@ function getCoord(stream) {
value = -value;
}
}
return value;
}
function getVecCoord(stream): Vector {
export function encodeCoord(value: number, stream: BitStream) {
const abs = Math.abs(value);
const intPart = Math.floor(abs);
const fractPart = abs % 1;
stream.writeBoolean(intPart !== 0);
stream.writeBoolean(fractPart !== 0);
if (intPart || fractPart) {
stream.writeBoolean(value < 0);
if (intPart) {
stream.writeBits(intPart - 1, 14);
}
if (fractPart) {
stream.writeBits(fractPart * 32, 5);
}
}
}
export function getVecCoord(stream: BitStream): Vector {
const hasX = stream.readBoolean();
const hasY = stream.readBoolean();
const hasZ = stream.readBoolean();
return {
x: hasX ? getCoord(stream) : 0,
y: hasY ? getCoord(stream) : 0,
@ -32,16 +51,33 @@ function getVecCoord(stream): Vector {
};
}
export function encodeVecCoord(vector: Vector, stream: BitStream) {
stream.writeBoolean(vector.x !== 0);
stream.writeBoolean(vector.y !== 0);
stream.writeBoolean(vector.z !== 0);
if (vector.x !== 0) {
encodeCoord(vector.x, stream);
}
if (vector.y !== 0) {
encodeCoord(vector.y, stream);
}
if (vector.z !== 0) {
encodeCoord(vector.z, stream);
}
}
export function ParseBSPDecal(stream: BitStream): BSPDecalPacket { // 21: ParseBSPDecal
let modelIndex = 0;
let entIndex = 0;
const position = getVecCoord(stream);
const textureIndex = stream.readBits(9);
if (stream.readBits(1)) {
if (stream.readBoolean()) {
entIndex = stream.readBits(11);
modelIndex = stream.readBits(12);
}
const lowPriority = stream.readBoolean();
return {
packetType: 'bspDecal',
position,
@ -51,3 +87,16 @@ export function ParseBSPDecal(stream: BitStream): BSPDecalPacket { // 21: ParseB
lowPriority,
};
}
export function EncodeBSPDecal(packet: BSPDecalPacket, stream: BitStream) {
encodeVecCoord(packet.position, stream);
stream.writeBits(packet.textureIndex, 9);
if (packet.entIndex || packet.modelIndex) {
stream.writeBoolean(true);
stream.writeBits(packet.entIndex, 11);
stream.writeBits(packet.modelIndex, 12);
} else {
stream.writeBoolean(false);
}
stream.writeBoolean(packet.lowPriority);
}