clear name when dismount
add sprite parent name getter
fix particle system memory size error
draw particle as sprite child
bugfix: texture_load reuse texture id
Merge branch 'master' of ssh://oa.ejoy.com/ejoy2d
add anchor type
change anchor.matrix to anchor.world_matrix
frame can be negative
treat particle as sprite;
support particle group;
add child_visible interface

Signed-off-by: rainfiel <rainfiel@ejoy.com>
Merge branch 'master' of ssh://oa.ejoy.com/ejoy2d
new particle example res

Signed-off-by: rainfiel <rainfiel@ejoy.com>
update particle example ex03.lua
bugfix: matrix.new() return identity matrix
Merge branch 'master' of ssh://oa.ejoy.com/ejoy2d
add matrix:export
add api document (unfinished)
set particle to deactive default

Signed-off-by: rainfiel <rainfiel@gmail.com>
Merge branch 'master' of ssh://oa.ejoy.com/ejoy2d
update particle depend on visibility

Signed-off-by: rainfiel <rainfiel@gmail.com>