## **part_type_size**
**设置粒子类型的起始大小范围。**
#### **语法:**
part_type_size(ind, size_min, size_max, size_incr, size_wiggle);
| 参数 | 描述 |
| --- | --- |
| ind | 精灵类型ID |
| size_min | 最小尺寸 |
| size_max | 最大尺寸 |
| size_incr | 粒子每步增加或减少多少 |
| size_wiggle | 每步从粒子大小中随机添加或减去多少 |
**返回:** N/A
#### **描述**
此功能用于确定创建时粒子的尺寸大小,也可用于使粒子在其整个生命周期内增大或缩小。最小和最大尺寸值的默认值为1(表示尺寸与设置part_type_scale之后的基本颗粒的比例相同),并且如果它们设置为相同的值,则所有颗粒的初始尺寸将是相同的,但是如果设置为不同的值,则每个粒子将以该范围内的随机大小开始,例如,如果您设置的最小值为0.5,最大值为2,则所有粒子的初始大小都是基础值的一半到两倍范围内随机。
您还可以设置一个增量值,使粒子精灵在粒子的生命周期中按照设置的值增长(正数)或收缩(负数)。该值最小值可以是(+/-)0.01。
最后,你可以设置“摆动”的因素。这是一个在粒子寿命中每一步都会随机添加或减去的值。显然,较大的值比较小的值更明显,而这个值甚至可以是负值,最大范围在-20和20之间。
#### **举例:**
~~~
part_type_shape(particle1, pt_shape_explosion);
part_type_size(particle1, 2, 2, 0.10, 0.01);
part_type_scale(particle1, 1, 1);
part_type_colour2(particle1, 16777215, 12632256);
part_type_alpha3(particle1, 0, 0.20, 0);
part_type_speed(particle1, 0.20, 0.20, 0, 0);
part_type_direction(particle1, 0, 359, 0, 20);
part_type_orientation(particle1, 0, 359, 0, 0, 1);
part_type_blend(particle1, 0);
part_type_life(particle1, 40, 60);
~~~
上面的代码将设置各种粒子值,包括在创建每个粒子时设置的大小的两倍,然后将大小增加0.01,并每一步都有0.1的摆动。
- 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)