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Repe [T3DU] and Moises Jpelaez updates

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Onek8
2026-05-12 23:54:06 -07:00
parent 6b404f9da6
commit 39091e8db3
147 changed files with 5539 additions and 1750 deletions
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leenkx/Sources/iron/object/ParticleSystem.hx
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@ -1,461 +1,9 @@
package iron.object;
#if lnx_particles
import kha.FastFloat;
import kha.graphics4.Usage;
import kha.arrays.Float32Array;
import iron.data.Data;
import iron.data.ParticleData;
import iron.data.SceneFormat;
import iron.data.Geometry;
import iron.data.MeshData;
import iron.system.Time;
import iron.math.Mat4;
import iron.math.Quat;
import iron.math.Vec3;
import iron.math.Vec4;
class ParticleSystem {
public var data: ParticleData;
public var speed = 1.0;
public var dynamicEmitter: Bool = true;
var currentSpeed = 0.0;
var particles: Array<Particle>;
var ready: Bool;
var frameRate = 24;
var lifetime = 0.0;
var looptime = 0.0;
var animtime = 0.0;
var time = 0.0;
var spawnRate = 0.0;
var seed = 0;
var r: TParticleData;
var gx: Float;
var gy: Float;
var gz: Float;
var alignx: Float;
var aligny: Float;
var alignz: Float;
var dimx: Float;
var dimy: Float;
var tilesx: Int;
var tilesy: Int;
var tilesFramerate: Int;
var count = 0;
var lap = 0;
var lapTime = 0.0;
var m = Mat4.identity();
var ownerLoc = new Vec4();
var ownerRot = new Quat();
var ownerScl = new Vec4();
var random = 0.0;
var tmpV4 = new Vec4();
var instancedData: Float32Array = null;
var lastSpawnedCount: Int = 0;
var hasUniqueGeom: Bool = false;
public function new(sceneName: String, pref: TParticleReference) {
seed = pref.seed;
currentSpeed = speed;
speed = 0;
particles = [];
ready = false;
Data.getParticle(sceneName, pref.particle, function(b: ParticleData) {
data = b;
r = data.raw;
var dyn: Null<Bool> = r.dynamic_emitter;
var dynValue: Bool = true;
if (dyn != null) {
dynValue = dyn;
}
dynamicEmitter = dynValue;
if (Scene.active.raw.gravity != null) {
gx = Scene.active.raw.gravity[0] * r.weight_gravity;
gy = Scene.active.raw.gravity[1] * r.weight_gravity;
gz = Scene.active.raw.gravity[2] * r.weight_gravity;
}
else {
gx = 0;
gy = 0;
gz = -9.81 * r.weight_gravity;
}
alignx = r.object_align_factor[0];
aligny = r.object_align_factor[1];
alignz = r.object_align_factor[2];
looptime = (r.frame_end - r.frame_start) / frameRate;
lifetime = r.lifetime / frameRate;
animtime = r.loop ? looptime : looptime + lifetime;
spawnRate = ((r.frame_end - r.frame_start) / r.count) / frameRate;
for (i in 0...r.count) {
particles.push(new Particle(i));
}
ready = true;
if (r.auto_start){
start();
}
});
}
public function start() {
if (r.is_unique) random = Math.random();
lifetime = r.lifetime / frameRate;
time = 0;
lap = 0;
lapTime = 0;
speed = currentSpeed;
lastSpawnedCount = 0;
instancedData = null;
}
public function pause() {
speed = 0;
}
public function resume() {
lifetime = r.lifetime / frameRate;
speed = currentSpeed;
}
// TODO: interrupt smoothly
public function stop() {
end();
}
function end() {
lifetime = 0;
speed = 0;
lap = 0;
}
public function update(object: MeshObject, owner: MeshObject) {
if (!ready || object == null || speed == 0.0) return;
if (iron.App.pauseUpdates) return;
var prevLap = lap;
// Copy owner world transform but discard scale
owner.transform.world.decompose(ownerLoc, ownerRot, ownerScl);
if (dynamicEmitter) {
object.transform.loc.x = 0; object.transform.loc.y = 0; object.transform.loc.z = 0;
object.transform.rot = new Quat();
} else {
object.transform.loc = ownerLoc;
object.transform.rot = ownerRot;
}
// Set particle size per particle system
object.transform.scale = new Vec4(r.particle_size, r.particle_size, r.particle_size, 1);
object.transform.buildMatrix();
owner.transform.buildMatrix();
object.transform.dim.setFrom(owner.transform.dim);
dimx = object.transform.dim.x;
dimy = object.transform.dim.y;
if (object.activeTilesheet != null) {
tilesx = object.activeTilesheet.raw.tilesx;
tilesy = object.activeTilesheet.raw.tilesy;
tilesFramerate = object.activeTilesheet.raw.framerate;
}
// Animate
time += Time.renderDelta * speed; // realDelta to renderDelta
lap = Std.int(time / animtime);
lapTime = time - lap * animtime;
count = Std.int(lapTime / spawnRate);
if (lap > prevLap && !r.loop) {
end();
}
if (lap > prevLap && r.loop) {
lastSpawnedCount = 0;
}
updateGpu(object, owner);
}
public function getData(): Mat4 {
var hair = r.type == 1;
// Store loop flag in the sign: positive -> loop, negative -> no loop
m._00 = r.loop ? animtime : -animtime;
m._01 = hair ? 1 / particles.length : spawnRate;
m._02 = hair ? 1 : lifetime;
m._03 = particles.length;
m._10 = hair ? 0 : alignx;
m._11 = hair ? 0 : aligny;
m._12 = hair ? 0 : alignz;
m._13 = hair ? 0 : r.factor_random;
m._20 = hair ? 0 : gx;
m._21 = hair ? 0 : gy;
m._22 = hair ? 0 : gz;
m._23 = hair ? 0 : r.lifetime_random;
m._30 = tilesx;
m._31 = tilesy;
m._32 = 1 / tilesFramerate;
m._33 = hair ? 1 : lapTime;
return m;
}
public function getSizeRandom(): FastFloat {
return r.size_random;
}
public inline function getRandom(): FastFloat {
return random;
}
public inline function getSize(): FastFloat {
return r.particle_size;
}
function updateGpu(object: MeshObject, owner: MeshObject) {
if (dynamicEmitter) {
if (!hasUniqueGeom) ensureUniqueGeom(object);
var needSetup = instancedData == null || object.data.geom.instancedVB == null;
if (needSetup) setupGeomGpuDynamic(object, owner);
updateSpawnedInstances(object, owner);
}
else {
if (!hasUniqueGeom) ensureUniqueGeom(object);
if (!object.data.geom.instanced) setupGeomGpu(object, owner);
}
// GPU particles transform is attached to owner object in static mode
}
function setupGeomGpu(object: MeshObject, owner: MeshObject) {
var instancedData = new Float32Array(particles.length * 3);
var i = 0;
var normFactor = 1 / 32767; // pa.values are not normalized
var scalePosOwner = owner.data.scalePos;
var scalePosParticle = object.data.scalePos;
var particleSize = r.particle_size;
var scaleFactor = new Vec4().setFrom(owner.transform.scale);
scaleFactor.mult(scalePosOwner / (particleSize * scalePosParticle));
switch (r.emit_from) {
case 0: // Vert
var pa = owner.data.geom.positions;
for (p in particles) {
var j = Std.int(fhash(i) * (pa.values.length / pa.size));
instancedData.set(i, pa.values[j * pa.size ] * normFactor * scaleFactor.x); i++;
instancedData.set(i, pa.values[j * pa.size + 1] * normFactor * scaleFactor.y); i++;
instancedData.set(i, pa.values[j * pa.size + 2] * normFactor * scaleFactor.z); i++;
}
case 1: // Face
var positions = owner.data.geom.positions.values;
for (p in particles) {
// Choose random index array (there is one per material) and random face
var ia = owner.data.geom.indices[Std.random(owner.data.geom.indices.length)];
var faceIndex = Std.random(Std.int(ia.length / 3));
var i0 = ia[faceIndex * 3 + 0];
var i1 = ia[faceIndex * 3 + 1];
var i2 = ia[faceIndex * 3 + 2];
var v0 = new Vec3(positions[i0 * 4], positions[i0 * 4 + 1], positions[i0 * 4 + 2]);
var v1 = new Vec3(positions[i1 * 4], positions[i1 * 4 + 1], positions[i1 * 4 + 2]);
var v2 = new Vec3(positions[i2 * 4], positions[i2 * 4 + 1], positions[i2 * 4 + 2]);
var pos = randomPointInTriangle(v0, v1, v2);
instancedData.set(i, pos.x * normFactor * scaleFactor.x); i++;
instancedData.set(i, pos.y * normFactor * scaleFactor.y); i++;
instancedData.set(i, pos.z * normFactor * scaleFactor.z); i++;
}
case 2: // Volume
var scaleFactorVolume = new Vec4().setFrom(object.transform.dim);
scaleFactorVolume.mult(0.5 / (particleSize * scalePosParticle));
for (p in particles) {
instancedData.set(i, (Math.random() * 2.0 - 1.0) * scaleFactorVolume.x); i++;
instancedData.set(i, (Math.random() * 2.0 - 1.0) * scaleFactorVolume.y); i++;
instancedData.set(i, (Math.random() * 2.0 - 1.0) * scaleFactorVolume.z); i++;
}
}
object.data.geom.setupInstanced(instancedData, 1, Usage.StaticUsage);
}
// allocate instanced VB once for this object
function setupGeomGpuDynamic(object: MeshObject, owner: MeshObject) {
if (instancedData == null) instancedData = new Float32Array(particles.length * 3);
lastSpawnedCount = 0;
// Create instanced VB once if missing (seed with our instancedData)
if (object.data.geom.instancedVB == null) {
object.data.geom.setupInstanced(instancedData, 1, Usage.DynamicUsage);
}
}
function ensureUniqueGeom(object: MeshObject) {
if (hasUniqueGeom) return;
var newData: MeshData = null;
new MeshData(object.data.raw, function(dat: MeshData) {
dat.scalePos = object.data.scalePos;
dat.scaleTex = object.data.scaleTex;
dat.format = object.data.format;
newData = dat;
});
if (newData != null) object.setData(newData);
hasUniqueGeom = true;
}
function updateSpawnedInstances(object: MeshObject, owner: MeshObject) {
if (instancedData == null) return;
var targetCount = count;
if (targetCount > particles.length) targetCount = particles.length;
if (targetCount <= lastSpawnedCount) return;
var normFactor = 1 / 32767;
var scalePosOwner = owner.data.scalePos;
var scalePosParticle = object.data.scalePos;
var particleSize = r.particle_size;
var base = 1.0 / (particleSize * scalePosParticle);
switch (r.emit_from) {
case 0: // Vert
var pa = owner.data.geom.positions;
var osx = owner.transform.scale.x;
var osy = owner.transform.scale.y;
var osz = owner.transform.scale.z;
var pCount = Std.int(pa.values.length / pa.size);
for (idx in lastSpawnedCount...targetCount) {
var j = Std.int(fhash(idx) * pCount);
var lx = pa.values[j * pa.size ] * normFactor * scalePosOwner * osx;
var ly = pa.values[j * pa.size + 1] * normFactor * scalePosOwner * osy;
var lz = pa.values[j * pa.size + 2] * normFactor * scalePosOwner * osz;
tmpV4.x = lx; tmpV4.y = ly; tmpV4.z = lz; tmpV4.w = 1;
tmpV4.applyQuat(ownerRot);
var o = idx * 3;
instancedData.set(o , (tmpV4.x + ownerLoc.x) * base);
instancedData.set(o + 1, (tmpV4.y + ownerLoc.y) * base);
instancedData.set(o + 2, (tmpV4.z + ownerLoc.z) * base);
}
case 1: // Face
var positions = owner.data.geom.positions.values;
var osx1 = owner.transform.scale.x;
var osy1 = owner.transform.scale.y;
var osz1 = owner.transform.scale.z;
for (idx in lastSpawnedCount...targetCount) {
var ia = owner.data.geom.indices[Std.random(owner.data.geom.indices.length)];
var faceIndex = Std.random(Std.int(ia.length / 3));
var i0 = ia[faceIndex * 3 + 0];
var i1 = ia[faceIndex * 3 + 1];
var i2 = ia[faceIndex * 3 + 2];
var v0x = positions[i0 * 4 ], v0y = positions[i0 * 4 + 1], v0z = positions[i0 * 4 + 2];
var v1x = positions[i1 * 4 ], v1y = positions[i1 * 4 + 1], v1z = positions[i1 * 4 + 2];
var v2x = positions[i2 * 4 ], v2y = positions[i2 * 4 + 1], v2z = positions[i2 * 4 + 2];
var rx = Math.random(); var ry = Math.random(); if (rx + ry > 1) { rx = 1 - rx; ry = 1 - ry; }
var pxs = v0x + rx * (v1x - v0x) + ry * (v2x - v0x);
var pys = v0y + rx * (v1y - v0y) + ry * (v2y - v0y);
var pzs = v0z + rx * (v1z - v0z) + ry * (v2z - v0z);
var px = pxs * normFactor * scalePosOwner * osx1;
var py = pys * normFactor * scalePosOwner * osy1;
var pz = pzs * normFactor * scalePosOwner * osz1;
tmpV4.x = px; tmpV4.y = py; tmpV4.z = pz; tmpV4.w = 1;
tmpV4.applyQuat(ownerRot);
var o1 = idx * 3;
instancedData.set(o1 , (tmpV4.x + ownerLoc.x) * base);
instancedData.set(o1 + 1, (tmpV4.y + ownerLoc.y) * base);
instancedData.set(o1 + 2, (tmpV4.z + ownerLoc.z) * base);
}
case 2: // Volume
var dim = object.transform.dim;
for (idx in lastSpawnedCount...targetCount) {
tmpV4.x = (Math.random() * 2.0 - 1.0) * (dim.x * 0.5);
tmpV4.y = (Math.random() * 2.0 - 1.0) * (dim.y * 0.5);
tmpV4.z = (Math.random() * 2.0 - 1.0) * (dim.z * 0.5);
tmpV4.w = 1;
tmpV4.applyQuat(ownerRot);
var o2 = idx * 3;
instancedData.set(o2 , (tmpV4.x + ownerLoc.x) * base);
instancedData.set(o2 + 1, (tmpV4.y + ownerLoc.y) * base);
instancedData.set(o2 + 2, (tmpV4.z + ownerLoc.z) * base);
}
}
// Upload full active range [0..targetCount) to this object's instanced VB
var geom = object.data.geom;
if (geom.instancedVB == null) {
geom.setupInstanced(instancedData, 1, Usage.DynamicUsage);
}
var vb = geom.instancedVB.lock();
var totalFloats = targetCount * 3; // xyz per instance
var i = 0;
while (i < totalFloats) {
vb.setFloat32(i * 4, instancedData[i]);
i++;
}
geom.instancedVB.unlock();
geom.instanceCount = targetCount;
lastSpawnedCount = targetCount;
}
inline function fhash(n: Int): Float {
var s = n + 1.0;
s *= 9301.0 % s;
s = (s * 9301.0 + 49297.0) % 233280.0;
return s / 233280.0;
}
public function remove() {}
/**
Generates a random point in the triangle with vertex positions abc.
Please note that the given position vectors are changed in-place by this
function and can be considered garbage afterwards, so make sure to clone
them first if needed.
**/
public static inline function randomPointInTriangle(a: Vec3, b: Vec3, c: Vec3): Vec3 {
// Generate a random point in a square where (0, 0) <= (x, y) < (1, 1)
var x = Math.random();
var y = Math.random();
if (x + y > 1) {
// We're in the upper right triangle in the square, mirror to lower left
x = 1 - x;
y = 1 - y;
}
// Transform the point to the triangle abc
var u = b.sub(a);
var v = c.sub(a);
return a.add(u.mult(x).add(v.mult(y)));
}
}
class Particle {
public var i: Int;
public var x = 0.0;
public var y = 0.0;
public var z = 0.0;
public var cameraDistance: Float;
public function new(i: Int) {
this.i = i;
}
}
#if lnx_gpu_particles
typedef ParticleSystem = ParticleSystemGPU;
#elseif lnx_cpu_particles
typedef ParticleSystem = ParticleSystemCPU;
#else
class ParticleSystem { public function new() { } }
#end