Assets/Scenes/Level2.shade

@@ -3128,23 +3128,23 @@
       Scale: {x: 1.00000012, y: 1, z: 1.00000012}
       IsActive: true
     classSHADE::SHParticleEmitterComponent:
-      Emission Count: 4
+      Emission Count: 2
       Is Passive: false
       Emission Interval: 0
-      Min Life: 0
-      Max Life: 0.5
+      Min Life: 0.100000001
+      Max Life: 2
       Minimum Speed: 1
       Maximum Speed: 1.5
-      Minimum Size: 0
-      Maximum Size: 0.5
-      Size Decay: 0.907999992
-      Angular Ranges And Offset: {x: 6.19999981, y: 3.1400001, z: 0, w: 1.70000005}
+      Minimum Size: 0.100000001
+      Maximum Size: 0.100000001
+      Size Decay: 0.907000005
+      Angular Ranges And Offset: {x: 0.779999971, y: 0, z: -1.57070005, w: 0}
       Rotation Speed: 0.805999994
       Rotation Decay: 0
-      Texture Asset ID: 0
-      Custom Update Shader Asset ID: 0
+      Texture Asset ID: 56224060
+      Custom Update Shader Asset ID: 42141152
       Color Tint: {x: 1, y: 1, z: 1, w: 1}
-      Acceleration: {x: 0, y: 0.0500000007, z: 0.100000001}
+      Acceleration: {x: 0, y: 0, z: 0}
       IsActive: true
   Scripts: ~
 - EID: 239

Assets/Scripts/Gameplay/Player/PlayerStates/UT_PlayerWalkState.cs

@@ -1,4 +1,4 @@
-using SHADE;
+using SHADE;
 using SHADE_Scripting.Audio;
 using System;
 
@@ -48,6 +48,12 @@ public class PlayerWalkState : BaseState
 
     if (timer > delay)
     {
+
+      if (machine.GetScript<PlayerController>().tranform.LocalEulerAngles.y > 0.0f)
+        machine.GetScript<PlayerController>().smoke.AngularOffsets = new Vector2(machine.GetScript<PlayerController>().tranform.LocalEulerAngles.y - (MathF.PI * 1.5f), machine.GetScript<PlayerController>().smoke.AngularOffsets.y);
+      else
+        machine.GetScript<PlayerController>().smoke.AngularOffsets = new Vector2(machine.GetScript<PlayerController>().tranform.LocalEulerAngles.y + (MathF.PI * 0.5f), machine.GetScript<PlayerController>().smoke.AngularOffsets.y);
+
       AudioHandler.audioClipHandlers["footsteps"].Play();
       machine.GetScript<PlayerController>().smoke.Emit();
       timer = 0;    

Assets/Shaders/ParticleEmit_CS.glsl

@@ -139,19 +139,20 @@ void main()
   // emit particle from emitter position
   particle.position = vec4 (emitterPosition.xyz, 1.0f);
 
-  vec2 eulerAngles = vec2 (rand(seed) * angularRangesAndOffsets.x + angularRangesAndOffsets.z, 
-                           rand(seed) * angularRangesAndOffsets.y + angularRangesAndOffsets.w);
+  vec2 eulerAngles = vec2 ((rand(seed) - 0.5f) * angularRangesAndOffsets.x + angularRangesAndOffsets.z, 
+                           (rand(seed) - 0.5f) * angularRangesAndOffsets.y + angularRangesAndOffsets.w);
 
   // Set its velocity
   // particle.velocity.xyz = vec3 (cos(eulerAngles.x) * cos(eulerAngles.y), 
   //                               sin(eulerAngles.x) * cos(eulerAngles.y),
   //                               sin(eulerAngles.y));
 
+  float heading = eulerAngles.x;
   float bank = eulerAngles.y;
   float cb = cos(bank);
   float sb = sin(bank);
-  float ch = cos (eulerAngles.x);
-  float sh = sin (eulerAngles.x);
+  float ch = cos (heading);
+  float sh = sin (heading);
   float cp = cos (0.0f);
   float sp = sin (0.0f);
 

Assets/Shaders/ParticleUpdateGrowThenShrink_CS.glsl

@@ -0,0 +1,173 @@
+#version 450
+
+layout(local_size_x = 128) in;
+
+struct DrawArraysIndirectArgs
+{
+  uint count;
+  uint instanceCount;
+  uint first;
+  uint baseInstance;
+};
+
+struct ParticleData
+{
+  vec4 position;
+  vec4 orientationSpeedDecay;
+  vec4 velocity;
+  vec4 acceleration;
+  vec4 scaleAndDecay;
+  vec4 colorTint;
+  float life;
+  uint textureIndex;
+};
+
+struct GenericData
+{
+  //! Delta time
+  float dt;
+
+  //! Elapsed time of the application
+  float elapsedTime;
+
+  //! Viewport width of the scene (excluding imgui, that means smaller than window)
+  uint viewportWidth;
+
+  //! Ditto but for height
+  uint viewportHeight;
+};
+
+layout(set = 1, binding = 0) uniform CameraData
+{
+  vec4 position; 
+  mat4 vpMat;
+  mat4 viewMat;
+  mat4 projMat;
+} cameraData;
+
+
+layout (set = 0, binding = 0) uniform GenericDataBuffer
+{
+  GenericData data;
+} genericDataBuffer;
+
+layout (std430, set = 2, binding = 1) coherent restrict readonly buffer ParticlesInputBuffer
+{
+  ParticleData data[];
+} inputParticles;
+
+// output buffer not needed
+layout (std430, set = 2, binding = 2) coherent restrict buffer ParticlesOutputBuffer
+{
+  ParticleData data[];
+} outputParticles;
+
+layout (std430, set = 2, binding = 3) coherent restrict buffer ParticlesFreelistBuffer
+{
+  int freeCount;
+  int freeIndices[];
+
+} freelist;
+
+layout (std430, set = 2, binding = 4) coherent restrict buffer IndicesData
+{
+  uint indices[];
+};
+
+layout (std140, set = 2, binding = 5) coherent restrict buffer IndirectDrawArgs
+{
+  DrawArraysIndirectArgs indirectArgs;
+}; 
+
+// push constants
+layout(std140, push_constant) uniform EmitterPushConstant
+{
+  vec4 emitterPosition;
+  uint emissionCount;
+
+} emitterPushConstant;
+
+uint pcg_hash(uint seed)
+{
+  uint state = seed * 747796405u + 2891336453u;
+  uint word = ((state >> ((state >> 28u) + 4u)) ^ state) * 277803737u;
+  return (word >> 22u) ^ word;
+}
+
+// Used to advance the PCG state.
+uint rand_pcg(inout uint rng_state)
+{
+  uint state = rng_state;
+  rng_state = rng_state * 747796405u + 2891336453u;
+  uint word = ((state >> ((state >> 28u) + 4u)) ^ state) * 277803737u;
+  return (word >> 22u) ^ word;
+}
+
+// Advances the prng state and returns the corresponding random float.
+float rand(inout uint state)
+{
+  uint x = rand_pcg(state);
+  state = x;
+  return float(x)*uintBitsToFloat(0x2f800004u);
+}
+
+void main()
+{ 
+  uint index = gl_GlobalInvocationID.x;
+
+  ParticleData particle = inputParticles.data[index];
+
+  if (particle.life > 0.0f)
+  {
+
+    // update position from velocity
+    particle.position.xyz += particle.velocity.xyz * genericDataBuffer.data.dt;
+    particle.velocity += particle.acceleration;
+    particle.life -= genericDataBuffer.data.dt;
+    particle.orientationSpeedDecay.x += particle.orientationSpeedDecay.y;
+    // particle.scaleAndDecay.x *= particle.scaleAndDecay.z;
+    // particle.scaleAndDecay.y *= particle.scaleAndDecay.w;
+
+    if (particle.position.w == 0.0f)
+    {
+      particle.scaleAndDecay.x *= particle.scaleAndDecay.z;
+      particle.scaleAndDecay.y *= particle.scaleAndDecay.w;
+      if (particle.scaleAndDecay.x < 0.0f)
+      {
+        particle.scaleAndDecay.x = 0.0f;
+        particle.scaleAndDecay.y = 0.0f;   
+      }
+    }
+    else
+    {
+      particle.scaleAndDecay.x /= particle.scaleAndDecay.z;
+      particle.scaleAndDecay.y /= particle.scaleAndDecay.w;
+      if (particle.scaleAndDecay.x > 0.2f)
+        particle.position.w = 0.0f;
+    }
+    
+
+    if (particle.orientationSpeedDecay.y > 0.0f)
+    {
+      particle.orientationSpeedDecay.y -= particle.orientationSpeedDecay.z * genericDataBuffer.data.dt;
+      if (particle.orientationSpeedDecay.y < 0.0f)
+        particle.orientationSpeedDecay.y = 0.0f;
+    }  
+    
+    if (particle.life < 0.0f || particle.scaleAndDecay.x < 0.0f || particle.scaleAndDecay.y < 0.0f)
+    {
+      particle.life = 0.0f;
+      particle.position.x = 9999.0f;
+      
+      outputParticles.data[index] = particle;
+      freelist.freeIndices[atomicAdd(freelist.freeCount, 1)] = int (index);
+      return;
+    }
+
+    uint drawIndex = atomicAdd (indirectArgs.instanceCount, 1);
+    indices[drawIndex] = index;
+
+  }
+
+  outputParticles.data[index] = particle;
+}

Assets/Shaders/ParticleUpdateGrowThenShrink_CS.shshaderb.shmeta

@@ -0,0 +1,3 @@
+Name: ParticleUpdateGrowThenShrink_CS
+ID: 42141152
+Type: 2

SHADE_Engine/src/Editor/EditorWindow/Inspector/SHEditorComponentView.hpp

@@ -913,12 +913,6 @@ namespace SHADE
         {
           comp->SetTextureAssetID(val);
         });
-      ImGui::SameLine();
-      if (ImGui::Button("Reset"))
-      {
-        component->SetTextureAssetID(0);
-        component->SetTextureIndex(0);
-      }
 
       if (SHDragDrop::BeginTarget())
       {
@@ -940,6 +934,13 @@ namespace SHADE
           SHDragDrop::EndTarget();
         }
       }
+      ImGui::SameLine();
+      if (ImGui::Button("Reset"))
+      {
+        component->SetTextureAssetID(0);
+        component->SetTextureIndex(0);
+      }
+
       SHEditorWidgets::InputText("Custom Update Shader",
         [comp = component]()
         {

SHADE_Engine/src/Serialization/SHYAMLConverters.h

@@ -576,6 +576,9 @@ namespace YAML
       if (node[MAX_SPEED_TAG.data()].IsDefined())
         rhs.SetMaxSpeed (node[MAX_SPEED_TAG.data()].as<float>());
 
+      if (node[MIN_SIZE_TAG.data()].IsDefined())
+        rhs.SetMinSize(node[MIN_SIZE_TAG.data()].as<float>());
+
       if (node[MAX_SIZE_TAG.data()].IsDefined())
         rhs.SetMaxSize(node[MAX_SIZE_TAG.data()].as<float>());
 
@@ -619,7 +622,7 @@ namespace YAML
         //gfxSystem->BuildTextures();
 
         rhs.SetCustomUpdateShader(shaderModule);
-        rhs.SetTextureAssetID(id);
+        rhs.SetCustomUpdateShaderAssetID(id);
       }
       
       return true;