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Sprite: Implement wave effect (RGSS2)

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This initial implementation emulates the way RMVX splits
the sprite into "chunks" of about 8 pixels, which it then
scrolls left/right on a vertical sine wave. It even
replicates the weird behavior when wave_amp < 0, namely
"shrinking" the src_rect horizontally.

As with bush_opacity, this effect in combination with
rotation will render differently from RMVX.
This commit is contained in:
Jonas Kulla 2014-02-03 15:32:50 +01:00
parent 42b10fd2ee
commit af9039f58d
6 changed files with 346 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

39
binding-mruby/sprite-binding.cpp
View file

@ -68,6 +68,35 @@ DEF_PROP_F(Sprite, Angle)
DEF_PROP_B(Sprite, Mirror)
#ifdef RGSS2
MRB_METHOD(spriteWidth)
{
Sprite *s = getPrivateData<Sprite>(mrb, self);
int value;
GUARD_EXC( value = s->getWidth(); )
return mrb_fixnum_value(value);
}
MRB_METHOD(spriteHeight)
{
Sprite *s = getPrivateData<Sprite>(mrb, self);
int value;
GUARD_EXC( value = s->getHeight(); )
return mrb_fixnum_value(value);
}
DEF_PROP_I(Sprite, WaveAmp)
DEF_PROP_I(Sprite, WaveLength)
DEF_PROP_I(Sprite, WaveSpeed)
DEF_PROP_F(Sprite, WavePhase)
#endif
void
spriteBindingInit(mrb_state *mrb)
{
@ -95,5 +124,15 @@ spriteBindingInit(mrb_state *mrb)
INIT_PROP_BIND( Sprite, Color, "color" );
INIT_PROP_BIND( Sprite, Tone, "tone" );
#ifdef RGSS2
mrb_define_method(mrb, klass, "width", spriteWidth, MRB_ARGS_NONE());
mrb_define_method(mrb, klass, "height", spriteHeight, MRB_ARGS_NONE());
INIT_PROP_BIND( Sprite, WaveAmp, "wave_amp" );
INIT_PROP_BIND( Sprite, WaveLength, "wave_length" );
INIT_PROP_BIND( Sprite, WaveSpeed, "wave_speed" );
INIT_PROP_BIND( Sprite, WavePhase, "wave_phase" );
#endif
mrb_define_method(mrb, klass, "inspect", inspectObject, MRB_ARGS_NONE());
}