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Fix more errors at the integer limit.

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Fixes #309
This commit is contained in:
IntegratedQuantum 2024-04-05 11:44:42 +02:00
parent 0b11301910
commit f7cd5e4c9c
8 changed files with 35 additions and 34 deletions
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8
src/renderer.zig
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@ -746,21 +746,21 @@ pub const MeshSelection = struct {
posBeforeBlock = voxelPos;
if(tMax[0] < tMax[1]) {
if(tMax[0] < tMax[2]) {
voxelPos[0] += step[0];
voxelPos[0] +%= step[0];
total_tMax = tMax[0];
tMax[0] += tDelta[0];
} else {
voxelPos[2] += step[2];
voxelPos[2] +%= step[2];
total_tMax = tMax[2];
tMax[2] += tDelta[2];
}
} else {
if(tMax[1] < tMax[2]) {
voxelPos[1] += step[1];
voxelPos[1] +%= step[1];
total_tMax = tMax[1];
tMax[1] += tDelta[1];
} else {
voxelPos[2] += step[2];
voxelPos[2] +%= step[2];
total_tMax = tMax[2];
tMax[2] += tDelta[2];
}

32
src/renderer/mesh_storage.zig
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@ -167,9 +167,9 @@ pub fn getMeshFromAnyLodFromRenderThread(wx: i32, wy: i32, wz: i32, voxelSize: u
pub fn getNeighborFromRenderThread(_pos: chunk.ChunkPosition, resolution: u31, neighbor: u3) ?*chunk_meshing.ChunkMesh {
var pos = _pos;
pos.wx += pos.voxelSize*chunk.chunkSize*chunk.Neighbors.relX[neighbor];
pos.wy += pos.voxelSize*chunk.chunkSize*chunk.Neighbors.relY[neighbor];
pos.wz += pos.voxelSize*chunk.chunkSize*chunk.Neighbors.relZ[neighbor];
pos.wx +%= pos.voxelSize*chunk.chunkSize*chunk.Neighbors.relX[neighbor];
pos.wy +%= pos.voxelSize*chunk.chunkSize*chunk.Neighbors.relY[neighbor];
pos.wz +%= pos.voxelSize*chunk.chunkSize*chunk.Neighbors.relZ[neighbor];
pos.voxelSize = resolution;
const node = getNodeFromRenderThread(pos);
return node.mesh.load(.acquire);
@ -219,16 +219,16 @@ fn isInRenderDistance(pos: chunk.ChunkPosition) bool {
const minX = lastPx-%maxRenderDistance & invMask;
const maxX = lastPx+%maxRenderDistance+%size & invMask;
if(pos.wx < minX) return false;
if(pos.wx >= maxX) return false;
if(pos.wx -% minX < 0) return false;
if(pos.wx -% maxX >= 0) return false;
var deltaX: i64 = @abs(pos.wx +% size/2 -% lastPx);
deltaX = @max(0, deltaX - size/2);
const maxYRenderDistance: i32 = reduceRenderDistance(maxRenderDistance, deltaX);
const minY = lastPy-%maxYRenderDistance & invMask;
const maxY = lastPy+%maxYRenderDistance+%size & invMask;
if(pos.wy < minY) return false;
if(pos.wy >= maxY) return false;
if(pos.wy -% minY < 0) return false;
if(pos.wy -% maxY >= 0) return false;
var deltaY: i64 = @abs(pos.wy +% size/2 -% lastPy);
deltaY = @max(0, deltaY - size/2);
@ -236,8 +236,8 @@ fn isInRenderDistance(pos: chunk.ChunkPosition) bool {
if(maxZRenderDistance == 0) return false;
const minZ = lastPz-%maxZRenderDistance & invMask;
const maxZ = lastPz+%maxZRenderDistance+%size & invMask;
if(pos.wz < minZ) return false;
if(pos.wz >= maxZ) return false;
if(pos.wz -% minZ < 0) return false;
if(pos.wz -% maxZ >= 0) return false;
return true;
}
@ -249,8 +249,8 @@ fn isMapInRenderDistance(pos: LightMap.MapFragmentPosition) bool {
const minX = lastPx-%maxRenderDistance & invMask;
const maxX = lastPx+%maxRenderDistance+%size & invMask;
if(pos.wx < minX) return false;
if(pos.wx >= maxX) return false;
if(pos.wx -% minX < 0) return false;
if(pos.wx -% maxX >= 0) return false;
var deltaX: i64 = @abs(pos.wx +% size/2 -% lastPx);
deltaX = @max(0, deltaX - size/2);
@ -258,8 +258,8 @@ fn isMapInRenderDistance(pos: LightMap.MapFragmentPosition) bool {
if(maxYRenderDistance == 0) return false;
const minY = lastPy-%maxYRenderDistance & invMask;
const maxY = lastPy+%maxYRenderDistance+%size & invMask;
if(pos.wy < minY) return false;
if(pos.wy >= maxY) return false;
if(pos.wy -% minY < 0) return false;
if(pos.wy -% maxY >= 0) return false;
return true;
}
@ -751,9 +751,9 @@ pub noinline fn updateAndGetRenderChunks(conn: *network.Connection, playerPos: V
const max = data.node.max;
if(@reduce(.Or, min >= max)) continue; // Nothing to render.
var neighborPos = chunk.ChunkPosition{
.wx = mesh.pos.wx + chunk.Neighbors.relX[neighbor]*chunk.chunkSize*mesh.pos.voxelSize,
.wy = mesh.pos.wy + chunk.Neighbors.relY[neighbor]*chunk.chunkSize*mesh.pos.voxelSize,
.wz = mesh.pos.wz + chunk.Neighbors.relZ[neighbor]*chunk.chunkSize*mesh.pos.voxelSize,
.wx = mesh.pos.wx +% chunk.Neighbors.relX[neighbor]*chunk.chunkSize*mesh.pos.voxelSize,
.wy = mesh.pos.wy +% chunk.Neighbors.relY[neighbor]*chunk.chunkSize*mesh.pos.voxelSize,
.wz = mesh.pos.wz +% chunk.Neighbors.relZ[neighbor]*chunk.chunkSize*mesh.pos.voxelSize,
.voxelSize = mesh.pos.voxelSize,
};
var lod: u3 = data.node.lod;

6
src/server/terrain/CaveBiomeMap.zig
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@ -375,9 +375,9 @@ pub const CaveBiomeMapView = struct {
.super = InterpolatableCaveBiomeMapView.init(chunk.pos, chunk.width),
};
if(chunk.pos.voxelSize < 8) {
const startX = (chunk.pos.wx - 32) & ~@as(i32, 63);
const startY = (chunk.pos.wy - 32) & ~@as(i32, 63);
const startZ = (chunk.pos.wz - 32) & ~@as(i32, 63);
const startX = (chunk.pos.wx -% 32) & ~@as(i32, 63);
const startY = (chunk.pos.wy -% 32) & ~@as(i32, 63);
const startZ = (chunk.pos.wz -% 32) & ~@as(i32, 63);
self.noiseX = CachedFractalNoise3D.init(startX, startY, startZ, chunk.pos.voxelSize*4, chunk.width + 128, main.server.world.?.seed ^ 0x764923684396, 64);
self.noiseY = CachedFractalNoise3D.init(startX, startY, startZ, chunk.pos.voxelSize*4, chunk.width + 128, main.server.world.?.seed ^ 0x6547835649265429, 64);
self.noiseZ = CachedFractalNoise3D.init(startX, startY, startZ, chunk.pos.voxelSize*4, chunk.width + 128, main.server.world.?.seed ^ 0x56789365396783, 64);

10
src/server/terrain/CaveMap.zig
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@ -184,7 +184,7 @@ pub const CaveMapView = struct {
if(wy -% self.fragments[0].pos.wy >= CaveMapFragment.width*self.reference.pos.voxelSize) {
index += 2;
}
var deltaZ = self.reference.pos.wz - self.fragments[0].pos.wz;
var deltaZ = self.reference.pos.wz -% self.fragments[0].pos.wz;
if(deltaZ >= CaveMapFragment.height*self.reference.pos.voxelSize) {
index += 1;
deltaZ -= CaveMapFragment.height*self.reference.pos.voxelSize;
@ -209,7 +209,7 @@ pub const CaveMapView = struct {
if(wy -% self.fragments[0].pos.wy >= CaveMapFragment.width*self.reference.pos.voxelSize) {
index += 2;
}
var relativeZ = @divFloor(z + self.reference.pos.wz - self.fragments[0].pos.wz, self.reference.pos.voxelSize);
var relativeZ = @divFloor(z +% self.reference.pos.wz -% self.fragments[0].pos.wz, self.reference.pos.voxelSize);
std.debug.assert(relativeZ >= 0 and relativeZ < 2*CaveMapFragment.height);
const fragmentRelX = wx - self.fragments[index].pos.wx;
const fragmentRelY = wy - self.fragments[index].pos.wy;
@ -237,7 +237,7 @@ pub const CaveMapView = struct {
}
}
result += @ctz(height);
return result*self.reference.pos.voxelSize + self.fragments[0].pos.wz - self.reference.pos.wz;
return result*self.reference.pos.voxelSize +% self.fragments[0].pos.wz -% self.reference.pos.wz;
}
pub fn findTerrainChangeBelow(self: CaveMapView, relX: i32, relY: i32, z: i32) i32 {
@ -250,7 +250,7 @@ pub const CaveMapView = struct {
if(wy -% self.fragments[0].pos.wy >= CaveMapFragment.width*self.reference.pos.voxelSize) {
index += 2;
}
var relativeZ = @divFloor(z + self.reference.pos.wz - self.fragments[0].pos.wz, self.reference.pos.voxelSize);
var relativeZ = @divFloor(z +% self.reference.pos.wz -% self.fragments[0].pos.wz, self.reference.pos.voxelSize);
std.debug.assert(relativeZ >= 0 and relativeZ < 2*CaveMapFragment.height);
const fragmentRelX = wx - self.fragments[index].pos.wx;
const fragmentRelY = wy - self.fragments[index].pos.wy;
@ -278,7 +278,7 @@ pub const CaveMapView = struct {
}
}
result -= @clz(height);
return result*self.reference.pos.voxelSize + self.fragments[0].pos.wz - self.reference.pos.wz;
return result*self.reference.pos.voxelSize +% self.fragments[0].pos.wz -% self.reference.pos.wz;
}
};

5
src/server/terrain/SurfaceMap.zig
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@ -41,9 +41,10 @@ pub const MapFragmentPosition = struct {
}
pub fn getMinDistanceSquared(self: MapFragmentPosition, playerPosition: Vec3d, comptime width: comptime_int) f64 {
const adjustedPosition = @mod(playerPosition + @as(Vec3d, @splat(1 << 31)), @as(Vec3d, @splat(1 << 32))) - @as(Vec3d, @splat(1 << 31));
const halfWidth: f64 = @floatFromInt(self.voxelSize*@divExact(width, 2));
var dx = @abs(@as(f64, @floatFromInt(self.wx)) + halfWidth - playerPosition[0]);
var dy = @abs(@as(f64, @floatFromInt(self.wy)) + halfWidth - playerPosition[1]);
var dx = @abs(@as(f64, @floatFromInt(self.wx)) + halfWidth - adjustedPosition[0]);
var dy = @abs(@as(f64, @floatFromInt(self.wy)) + halfWidth - adjustedPosition[1]);
dx = @max(0, dx - halfWidth);
dy = @max(0, dy - halfWidth);
return dx*dx + dy*dy;

2
src/server/terrain/cavebiomegen/RandomBiomeDistribution.zig
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@ -48,7 +48,7 @@ pub fn generate(map: *CaveBiomeMapFragment, worldSeed: u64) void {
var insertionIndex: usize = 0;
var i: usize = 0;
while(i < validBiomes.items.len) : (i += 1) {
if(validBiomes.items[i].minHeight < map.pos.wz +% z +% CaveBiomeMapFragment.caveBiomeSize and validBiomes.items[i].maxHeight > map.pos.wz +% z) {
if(validBiomes.items[i].minHeight < map.pos.wz + z + (CaveBiomeMapFragment.caveBiomeSize - 1) and validBiomes.items[i].maxHeight > map.pos.wz + z) {
if(insertionIndex != i) {
const swap = validBiomes.items[i];
validBiomes.items[i] = validBiomes.items[insertionIndex];

2
src/server/terrain/cavegen/SurfaceGenerator.zig
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@ -45,7 +45,7 @@ pub fn generate(map: *CaveMapFragment, worldSeed: u64) void {
biomeMap.getSurfaceHeight(map.pos.wx +% x, map.pos.wy +% y -% 1),
height,
) - 0.5));
const relativeHeight: i32 = @as(i32, @intFromFloat(height)) - map.pos.wz;
const relativeHeight: i32 = @as(i32, @intFromFloat(height)) -% map.pos.wz;
map.removeRange(x, y, relativeHeight, CaveMapFragment.height*map.pos.voxelSize);
if(smallestHeight < 1) { // Seal off caves that intersect the ocean floor.
map.addRange(x, y, smallestHeight -% 1 -% map.pos.wz, relativeHeight);

4
src/server/terrain/chunkgen/StructureGenerator.zig
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@ -30,7 +30,7 @@ pub fn deinit() void {
pub fn generate(worldSeed: u64, chunk: *main.chunk.Chunk, caveMap: CaveMap.CaveMapView, biomeMap: CaveBiomeMap.CaveBiomeMapView) void {
if(chunk.pos.voxelSize < 4) {
// Uses a blue noise pattern for all structure that shouldn't touch.
const blueNoise = noise.BlueNoise.getRegionData(main.stackAllocator, chunk.pos.wx - 8, chunk.pos.wy - 8, chunk.width + 16, chunk.width + 16);
const blueNoise = noise.BlueNoise.getRegionData(main.stackAllocator, chunk.pos.wx -% 8, chunk.pos.wy -% 8, chunk.width + 16, chunk.width + 16);
defer main.stackAllocator.free(blueNoise);
for(blueNoise) |coordinatePair| {
const px = @as(i32, @intCast(coordinatePair >> 16)) - 8; // TODO: Maybe add a blue-noise iterator or something like that?
@ -71,7 +71,7 @@ pub fn generate(worldSeed: u64, chunk: *main.chunk.Chunk, caveMap: CaveMap.CaveM
const wpx = px -% 8 +% chunk.pos.wx;
const wpy = py -% 8 +% chunk.pos.wy;
const relZ = @as(i32, @intFromFloat(biomeMap.getSurfaceHeight(wpx, wpy))) - chunk.pos.wz;
const relZ = @as(i32, @intFromFloat(biomeMap.getSurfaceHeight(wpx, wpy))) -% chunk.pos.wz;
if(relZ < -32 or relZ >= chunk.width + 32) continue;
var seed = random.initSeed3D(worldSeed, .{wpx, wpy, relZ});