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| 1 | // Spawn between 300 and 400 particles per second | |
| 2 | partsys.emitter.spawnRateMin = 300.0f; | |
| 3 | partsys.emitter.spawnRateMax = 400.0f; | |
| 4 | ||
| 5 | //===================================================================================================================== | |
| 6 | // Generators determine the initial attributes of the particles | |
| 7 | //===================================================================================================================== | |
| 8 | ||
| 9 | partsys.generators.add(new RandomEnergyGenerator(6, 7)); // Particles live between 6 and 7 seconds. | |
| 10 | ||
| 11 | // For the position and velocity, use random values between a min and max coordinate value. | |
| 12 | partsys.generators.add(new MinMaxPositionGenerator(new Vector3f(-0.2f, -0.2f, -0.2f), new Vector3f(0.2f, 0.2f, 0.2f))); | |
| 13 | partsys.generators.add(new MinMaxVelocityGenerator(new Vector3f(-1f, 0.5f, -1f), new Vector3f(+1f, 2.0f, +1f))); | |
| 14 | ||
| 15 | //===================================================================================================================== | |
| 16 | // Affectors determine how the attributes change over time | |
| 17 | //===================================================================================================================== | |
| 18 | ||
| 19 | partsys.affectors.add(new ForwardEulerAffector()); // enables simple physics | |
| 20 | partsys.affectors.add(new StaticForceAffector(new Vector3f(0, 0.25f, 0))); // adds upward force | |
| 21 | partsys.affectors.add(new DampingAffector(0.6f)); // simulates air friction | |
| 22 | ||
| 23 | - | // The following defines and adds a multi-key RGBA gradient, so the colors change over time |
| 23 | + | // The following defines and adds a multi-key RGBA gradient, so the colors change over time |
| 24 | // Note: this currently uses Vector4f, but will be changed to use Color instead | |
| 25 | EnergyColorAffector energyColorAffector = new EnergyColorAffector(); | |
| 26 | energyColorAffector.gradientMap.put(6.5f, new Vector4f(0.9f, 0.9f, 0.9f, 0.8f)); | |
| 27 | energyColorAffector.gradientMap.put(6.4f, new Vector4f(1.0f, 1.0f, 0.3f, 1.0f)); | |
| 28 | energyColorAffector.gradientMap.put(5.6f, new Vector4f(1.0f, 0.2f, 0.1f, 0.0f)); | |
| 29 | energyColorAffector.gradientMap.put(5.0f, new Vector4f(1.0f, 0.2f, 0.1f, 0.7f)); | |
| 30 | energyColorAffector.gradientMap.put(2.5f, new Vector4f(0.1f, 0.1f, 0.1f, 0.0f)); | |
| 31 | energyColorAffector.gradientMap.put(1.0f, new Vector4f(0.1f, 0.1f, 0.1f, 1.0f)); | |
| 32 | energyColorAffector.gradientMap.put(0.0f, new Vector4f(0.1f, 0.1f, 0.1f, 0.0f)); | |
| 33 | partsys.affectors.add(energyColorAffector); | |
| 34 | ||
| 35 | // In a similar fashion, the size (xyz) over time can be controlled. (Z makes no sense with billboards :P) | |
| 36 | EnergySizeAffector energySizeAffector = new EnergySizeAffector(); | |
| 37 | energySizeAffector.gradientMap.put(6.5f, new Vector3f(0.01f, 0.01f, 0.01f)); | |
| 38 | energySizeAffector.gradientMap.put(6.2f, new Vector3f(0.1f, 0.1f, 0.1f)); | |
| 39 | energySizeAffector.gradientMap.put(5.0f, new Vector3f(0.0f, 0.0f, 0.0f)); | |
| 40 | energySizeAffector.gradientMap.put(2.5f, new Vector3f(0.01f, 0.01f, 0.01f)); | |
| 41 | energySizeAffector.gradientMap.put(0.0f, new Vector3f(0.7f, 0.7f, 0.7f)); | |
| 42 | partsys.affectors.add(energySizeAffector); | |
| 43 | ||
| 44 | ||
| 45 | partsys.affectors.add(new TurbulenceAffector(2.5f)); // Adds some randomness to the motion (random forces) | |
| 46 | ||
| 47 | // end of particle system definition |
