## **part_system_draw_order**
**设置新的粒子绘制的顺序。**
#### **语法:**
part_system_draw_order(ind, oldtonew);
The index of the particle system to change.
oldtonew Whether old particles should be drawn behind newer ones (true) or vice versa (false).
| 参数 | 描述 |
| --- | --- |
| ind | 粒子系统的ID |
| oldtonew | |
**返回:** N/A
#### **描述**
有了这个功能,你就可以设定在屏幕上创建粒子的方式。系统默认为true,这时旧的粒子会出现的深度会比新出现的粒子更小,所以新出现的粒子总是在旧的粒子之下,但通过这个函数设置为false后,你可以扭转这种秩序让新的粒子出现在旧的粒子之上。下面的图片说明了这一点,左边的图像是默认值true,右边的图像是false:
![part_system_draw_order-1](https://box.kancloud.cn/4ee8731dd87bcc242e704fb8a3b08eae_256x256.gif)|![part_system_draw_order-2](https://box.kancloud.cn/5eca97b2e89e5d85248fd6efd99ed8d4_256x256.gif)
**注意:** 当粒子以添加混合模式被绘制时,这个函数的效果并不是很明显。
举例:
~~~
mysystem = part_system_create();
part_system_clear( mysystem, 1 );
~~~
这将创建一个"mysystem"的粒子系统,并将他设置为新的粒子出现在老的上面。
- 简言
- 额外接口
- asset_get_index
- asset_get_type
- 粒子(PARTICLE)
- 简单粒子系统
- effect_create_below
- effect_create_above
- effect_clear
- ef_all
- 粒子系统
- 粒子系统的创建
- part_system_exists
- part_system_create
- part_system_create_layer
- part_system_get_layer
- part_system_layer
- part_system_clear
- part_system_depth
- part_system_position
- part_system_destroy
- part_particles_clear
- part_particles_count
- 系统绘图
- part_system_automatic_update
- part_system_automatic_draw
- part_system_update
- part_system_drawit
- part_system_draw_order
- 直接创建粒子
- part_particles_create
- part_particles_create_colour
- 粒子类型
- part_type_exists
- part_type_create
- part_type_destroy
- part_type_clear
- part_type_shape
- part_type_sprite
- part_type_size
- part_type_scale
- part_type_speed
- part_type_direction
- part_type_gravity
- part_type_orientation
- part_type_colour_mix
- part_type_colour_rgb
- part_type_colour_hsv
- part_type_colour1
- part_type_colour2
- part_type_colour3
- part_type_alpha1
- part_type_alpha2
- part_type_alpha3
- part_type_blend
- part_type_life
- part_type_step
- part_type_death
- 粒子发射器
- part_emitter_exists
- part_emitter_create
- part_emitter_clear
- part_emitter_region
- part_emitter_burst
- part_emitter_stream
- part_emitter_destroy
- part_emitter_destroy_all
- 数组(array)
- 数据结构(Data structures)
- 心得分享
- ds_exists
- ds_set_precision
- 网格(grid)
- ds_grid_create
- ds_grid_destroy
- ds_grid_width
- ds_grid_height
- ds_grid_resize
- ds_grid_clear
- ds_grid_set
- ds_grid_set_disk
- ds_grid_set_grid_region
- ds_grid_set_region
- ds_grid_shuffle
- ds_grid_sort
- ds_grid_get
- ds_grid_get_max
- ds_grid_get_mean
- ds_grid_get_min
- ds_grid_get_sum
- ds_grid_get_disk_max
- ds_grid_get_disk_mean
- ds_grid_get_disk_min
- ds_grid_get_disk_sum
- ds_grid_add
- ds_grid_add_region
- ds_grid_add_disk
- ds_grid_add_grid_region
- ds_grid_multiply
- ds_grid_multiply_disk
- ds_grid_multiply_region
- ds_grid_multiply_grid_region
- ds_grid_value_exists
- ds_grid_value_disk_exists
- ds_grid_value_x
- ds_grid_value_y
- ds_grid_value_disk_x
- ds_grid_value_disk_y
- ds_grid_copy
- ds_grid_read
- ds_grid_write
- 列表(list)
- 映射(map)
- 队列(Queues)
- 优先队列(Priority Queues)
- 堆栈(stack)