Particles todo item: particle textures

* Effecting particle properties with textures was possible in 2.49,
  but not in 2.5 anymore.
* Now particles have their own textures (available in texture panel
  for objects with particle systems), which are totally separate from
  the material textures.
* Currently a basic set of particle properties is available for
  texture control. Some others could still be added, but the whole
  system is not intended as an "change anything with a texture" as
  this kind of functionality will be provided with node particles in
  the future much better.
* Combined with the previously added "particle texture coordinates"
  this new functionality also solves the problem of animating particle
  properties through the particle lifetime nicely.
* Currently the textures only use the intensity of the texture in
  "multiply" blending mode, so in order for the textures to effect
  a particle parameter there has to be a non-zero value defined for
  the parameter in the particle settings. Other blend modes can be
  added later if they're considered useful enough.

1 files changed, 26 insertions, 3 deletions

diff --git a/source/blender/makesdna/DNA_particle_types.h b/source/blender/makesdna/DNA_particle_types.h
index e26414a0d72..1a0e6a3db7d 100644
--- a/source/blender/makesdna/DNA_particle_types.h
+++ b/source/blender/makesdna/DNA_particle_types.h
@@ -142,7 +142,7 @@ typedef struct ParticleSettings {
 	struct EffectorWeights *effector_weights;
 
 	int flag;
-	short type, from, distr;
+	short type, from, distr, texact;
 	/* physics modes */
 	short phystype, rotmode, avemode, reactevent;
 	short draw, draw_as, draw_size, childtype;
@@ -155,7 +155,7 @@ typedef struct ParticleSettings {
 	short adapt_angle, adapt_pix;
 
 	short disp, omat, interpolation, rotfrom, integrator;
-	short kink, kink_axis;
+	short kink, kink_axis, rt2;
 
 	/* billboards */
 	short bb_align, bb_uv_split, bb_anim, bb_split_offset;
@@ -169,7 +169,7 @@ typedef struct ParticleSettings {
 	/* general values */
 	float sta, end, lifetime, randlife;
 	float timetweak, jitfac, eff_hair, grid_rand;
-	int totpart, userjit, grid_res, rt;
+	int totpart, userjit, grid_res;
 
 	/* initial velocity factors */
 	float normfac, obfac, randfac, partfac, tanfac, tanphase, reactfac;
@@ -208,6 +208,8 @@ typedef struct ParticleSettings {
 	/* keyed particles */
 	int keyed_loops;
 
+	struct MTex *mtex[18];		/* MAX_MTEX */
+
 	struct Group *dup_group;
 	struct ListBase dupliweights;
 	struct Group *eff_group;		// deprecated
@@ -508,4 +510,25 @@ typedef struct ParticleSystem{				/* note, make sure all (runtime) are NULL's in
 #define PTARGET_MODE_FRIEND		1
 #define PTARGET_MODE_ENEMY		2
 
+/* mapto */
+/* init */
+#define PAMAP_INIT		15
+#define PAMAP_TIME		(1<<0)	/* emission time */
+#define PAMAP_LIFE		(1<<1)	/* life time */
+#define PAMAP_DENS		(1<<2)	/* density */
+#define PAMAP_SIZE		(1<<3)	/* physical size */
+/* reset */
+#define PAMAP_IVEL		(1<<5)	/* initial velocity */
+/* physics */
+#define PAMAP_PHYSICS	3136
+#define PAMAP_FIELD		(1<<6)	/* force fields */
+#define PAMAP_GRAVITY	(1<<10)
+#define PAMAP_DAMP		(1<<11)
+/* children */
+#define PAMAP_CHILD		912
+#define PAMAP_CLUMP		(1<<7)
+#define PAMAP_KINK		(1<<8)
+#define PAMAP_ROUGH		(1<<9)
+#define PAMAP_LENGTH	(1<<4)
+
 #endif