Changeset 7683 in orxonox.OLD for branches/atmospheric_engine/src/lib/graphics/effects/snow_effect.cc

Timestamp:

May 18, 2006, 2:56:01 PM (19 years ago)

Author:

hdavid

Message:

branches/atmospheric_engine: finished snow effect

File:

• branches/atmospheric_engine/src/lib/graphics/effects/snow_effect.cc (modified) (7 diffs)

branches/atmospheric_engine/src/lib/graphics/effects/snow_effect.cc

@@ -67 +67 @@
         LoadParam(root, "emissionRate", this, SnowEffect, emissionRate);
         LoadParam(root, "emissionVelocity", this, SnowEffect, emissionVelocity);
-        LoadParam(root, "spread", this, SnowEffect, spread);
+  LoadParam(root, "wind", this, SnowEffect, wind);
         LoadParam(root, "size", this, SnowEffect, size);
         LoadParam(root, "coord", this, SnowEffect, coord);
@@ -77 +77 @@
 
         // Default values
-        particles = 10000;
+        particles = 12000;
         texture = "maps/snow_flake_01_32x32.png";
         life = 8;
@@ -88 +88 @@
         velocity = -100;
         randomVelocity = 5;
-        angle = 0;
-        randomAngle = 0.3;
+        angle = 0.5;
+        randomAngle = 0.2;
         alpha = 0.5;
-        snowSize = Vector2D(1200, 1200);
-        snowCoord = Vector(100, 600, 200);
+        snowSize = Vector2D(2500, 2500);
+  snowCoord = Vector(100,450,400);
 
         activated = false;
@@ -107 +107 @@
         SnowEffect::snowParticles->setLifeSpan(life, randomLife);
         SnowEffect::snowParticles->setRadius(0.0, snowRadius, randomRadius);
-        SnowEffect::snowParticles->setRadius(0.2, snowRadius, randomRadius);
-        SnowEffect::snowParticles->setRadius(1.0, snowRadius, randomRadius);
+        SnowEffect::snowParticles->setRadius(0.2, snowRadius, randomRadius*0.8);
+        SnowEffect::snowParticles->setRadius(1.0, snowRadius, randomRadius*0.5);
         SnowEffect::snowParticles->setMass(0, snowMass, randomMass);
         SnowEffect::snowParticles->setColor(0,1, 1, 1, alpha);
@@ -116 +116 @@
         this->emitter->setSystem(SnowEffect::snowParticles);
 
-// this->updateNode(0);
         this->emitter->setRelCoor(snowCoord);
         this->emitter->setEmissionRate(rate);
@@ -122 +121 @@
         this->emitter->setSpread(angle, randomAngle);
         this->emitter->setSize(snowSize);
+  
+  //SnowEffect::snowParticles->precache(8);
 }
 
@@ -149 +150 @@
 void SnowEffect::tick(float dt)
 {
-        float distance = (State::getCameraNode()->getAbsCoor() - snowCoord).len();
-        if( activated && ( distance > 0.6*snowSize.x || distance > 0.6*snowSize.y) )
-                this->deactivate();
-        if( !activated && ( distance < 0.6*snowSize.x || distance < 0.6*snowSize.y ))
-                this->activate();
+  float distance = (State::getCameraNode()->getAbsCoor() - Vector(snowCoord.x, State::getCameraNode()->getAbsCoor().y, snowCoord.z)).len();
+  
+  if(activated)
+  {
+    if(distance > 0.3*snowSize.x || distance > 0.3*snowSize.y)
+                  this->deactivate();
+    else if(distance > 0.25*snowSize.x || distance > 0.25*snowSize.y) 
+      this->alpha = 0.15;
+    else if(distance > 0.2*snowSize.x || distance > 0.2*snowSize.y) 
+      this->alpha = 0.25;
+    else if(distance > 0.1*snowSize.x || distance > 0.1*snowSize.y) 
+      this->alpha = 0.4;
+
+    SnowEffect::snowParticles->setColor(0,1, 1, 1, alpha);
+    SnowEffect::snowParticles->setColor(.5, .6, .6, .6, alpha/2);
+    SnowEffect::snowParticles->setColor(1, .0, .0, .0, .0);
+  }
+  else
+  {
+  if(distance < 0.3*snowSize.x || distance < 0.3*snowSize.y )
+    this->activate();
+  if( distance < 0.25*snowSize.x || distance < 0.25*snowSize.y )
+    this->alpha = 0.25;
+  else if( distance < 0.2*snowSize.x || distance < 0.2*snowSize.y )
+    this->alpha = 0.4;
+  else if( distance < 0.1*snowSize.x || distance < 0.1*snowSize.y )
+    this->alpha = 0.5;
+
+    SnowEffect::snowParticles->setColor(0,1, 1, 1, alpha);
+    SnowEffect::snowParticles->setColor(.5, .6, .6, .6, alpha/2);
+    SnowEffect::snowParticles->setColor(1, .0, .0, .0, .0);
+  }
 }