Particle System
Particle System let you simulate rain, snow, fountain,
etc. To create particle generator in Awakening, click the drop down arrow
right at 
in main toolbar,
select 'Particle' in the popup menu, then left click in viewport. Particle Panel
will show all parameters of particle generator:
| Name | Name of particle generator |
| Color | particle's color |
| Position | Position of particle generator |
| Box Size | Exist space. Particle's exist space is a box, once particle run out of this box, this particle will die, and generator create a new particle synchronously. |
| Velocity | Initialization velocity of particle. If generator is "Explode" type, this velocity only express length, because in "Explode" mode, direction of particle's initialization velocity is random. |
| Acceleration | Acceleration of particle. This acceleration will take effect in whole particle life period. |
| Type | Type of particle generator. |
| Amount | Amount of particles. Once a particle die, another new one will be born, so total amount of particles is unchanged. |
| Size | Size of particle |
| Move Noise Intensity | Intensity of particle's move noise. |
| Spin Noise Intensity | Intensity of particle's spin noise. |
| Cycle | If turn off Cycle, no new particle born when a particle die. |
| Follow Camera | If turn on this style, particle generator will always follow camera. This technique is useful for simulating rain/snow, particles will always around your eyes. See remark. |
| Spin Noise | If turn on this style, particle will spin random. |
| Move Noise | If turn on this style, particle will move random. |
The geometry of a single particle is a triangle. To let particle seems like a round, prepare a image like this:
，load
this image ( Add Texture ) to scene and assign to
particle generator.
If use the Render To Texture feature in
scene, a particle that have 'Follow Camera' style should not be rendered simultaneously
in RTT rendering and normal rendering. So you need hide the particle in RTT
rendering (or in normal rendering), otherwise the particle will not be rendered
well.
To do this, just add two actions for every RTT:
| Message | Function | Object |
| Render Texture Begin | Hide | Particle |
| Render Texture End | Show | Particle |