hans/wolf_dart
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Adding more enemy types

Browse Source 
Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>
This commit is contained in:
Hans Kokx
2026-03-14 19:19:45 +01:00
parent 278c73a256
commit 9915aec674
12 changed files with 638 additions and 104 deletions
Download Patch File Download Diff File Expand all files Collapse all files

104
lib/features/map/vswap_parser.dart
View File

@@ -1,104 +0,0 @@
import 'dart:typed_data';
import 'package:wolf_dart/classes/matrix.dart';
import 'package:wolf_dart/classes/sprite.dart';
class VswapParser {
/// Extracts the 64x64 wall textures from VSWAP.WL1
static List<Matrix<int>> parseWalls(ByteData vswap) {
// 1. Read Header
int chunks = vswap.getUint16(0, Endian.little);
int spriteStart = vswap.getUint16(2, Endian.little);
// int soundStart = vswap.getUint16(4, Endian.little); // We don't need this yet
// 2. Read Offsets (Where does each chunk start in the file?)
List<int> offsets = [];
for (int i = 0; i < spriteStart; i++) {
offsets.add(vswap.getUint32(6 + (i * 4), Endian.little));
}
// 3. Extract the Wall Textures
List<Sprite> textures = [];
// Walls are chunks 0 through (spriteStart - 1)
for (int i = 0; i < spriteStart; i++) {
int offset = offsets[i];
if (offset == 0) continue; // Empty chunk
// Walls are always exactly 64x64 pixels (4096 bytes)
// Note: Wolf3D stores pixels in COLUMN-MAJOR order (Top to bottom, then left to right)
Sprite texture = List.generate(64, (_) => List.filled(64, 0));
for (int x = 0; x < 64; x++) {
for (int y = 0; y < 64; y++) {
int byteIndex = offset + (x * 64) + y;
texture[x][y] = vswap.getUint8(byteIndex);
}
}
textures.add(texture);
}
return textures;
}
/// Extracts the compiled scaled sprites from VSWAP.WL1
static List<Matrix<int>> parseSprites(ByteData vswap) {
int chunks = vswap.getUint16(0, Endian.little);
int spriteStart = vswap.getUint16(2, Endian.little);
int soundStart = vswap.getUint16(4, Endian.little);
List<int> offsets = [];
for (int i = 0; i < chunks; i++) {
offsets.add(vswap.getUint32(6 + (i * 4), Endian.little));
}
List<Matrix<int>> sprites = [];
// Sprites are located between the walls and the sounds
for (int i = spriteStart; i < soundStart; i++) {
int offset = offsets[i];
if (offset == 0) continue; // Some chunks are empty placeholders
// Initialize the 64x64 grid with 255 (The Magenta Transparency Color!)
Matrix<int> sprite = List.generate(64, (_) => List.filled(64, 255));
int leftPix = vswap.getUint16(offset, Endian.little);
int rightPix = vswap.getUint16(offset + 2, Endian.little);
// Read the offsets for each vertical column of the sprite
List<int> colOffsets = [];
for (int x = leftPix; x <= rightPix; x++) {
colOffsets.add(
vswap.getUint16(offset + 4 + ((x - leftPix) * 2), Endian.little),
);
}
for (int x = leftPix; x <= rightPix; x++) {
int colOffset = colOffsets[x - leftPix];
if (colOffset == 0) continue;
int cmdOffset = offset + colOffset;
// Execute the column drawing commands
while (true) {
int endY = vswap.getUint16(cmdOffset, Endian.little);
if (endY == 0) break; // 0 marks the end of the column
endY ~/= 2; // Wolf3D stores Y coordinates multiplied by 2
int pixelOfs = vswap.getUint16(cmdOffset + 2, Endian.little);
int startY = vswap.getUint16(cmdOffset + 4, Endian.little);
startY ~/= 2;
for (int y = startY; y < endY; y++) {
// The Carmack 286 Hack: pixelOfs + y gives the exact byte address!
sprite[x][y] = vswap.getUint8(offset + pixelOfs + y);
}
cmdOffset += 6; // Move to the next 6-byte instruction
}
}
sprites.add(sprite);
}
return sprites;
}
}

2
lib/features/map/wolf_map.dart
View File

@@ -1,8 +1,8 @@
import 'package:flutter/services.dart';
import 'package:wolf_dart/classes/matrix.dart';
import 'package:wolf_dart/features/map/vswap_parser.dart';
import 'package:wolf_dart/features/map/wolf_level.dart';
import 'package:wolf_dart/features/map/wolf_map_parser.dart';
import 'package:wolf_dart/vswap_parser.dart';
class WolfMap {
/// The fully parsed and decompressed levels from the game files.