From 391f40e8c9647c2c436ef8681061d57300d2f287 Mon Sep 17 00:00:00 2001
From: Lukas Toenne <lukas.toenne@googlemail.com>
Date: Wed, 16 Nov 2011 12:43:12 +0000
Subject: [PATCH] Default cache file paths for ocean and fluidsim modifiers are
 now "<temp folder>/ocean_cache/" and "<temp_folder>/fluid_cache/" when the
 file is not saved yet at the time the modifiers are created.

If it has been saved, the file paths are relative to the .blend: "//ocean_cache/" and "//fluid_cache/".

This should at least partially fix bug #29273. Particle external point caches are not changed.

http://projects.blender.org/tracker/?func=detail&atid=498&aid=29273&group_id=9
---
 .../modifiers/intern/MOD_fluidsim_util.c      | 18 ++++++++++++++++-
 source/blender/modifiers/intern/MOD_ocean.c   | 20 ++++++++++++++++++-
 2 files changed, 36 insertions(+), 2 deletions(-)

diff --git a/source/blender/modifiers/intern/MOD_fluidsim_util.c b/source/blender/modifiers/intern/MOD_fluidsim_util.c
index 1baa03d2063..15e1cdfcb62 100644
--- a/source/blender/modifiers/intern/MOD_fluidsim_util.c
+++ b/source/blender/modifiers/intern/MOD_fluidsim_util.c
@@ -69,6 +69,7 @@ void fluidsim_init(FluidsimModifierData *fluidmd)
 	if(fluidmd)
 	{
 		FluidsimSettings *fss = MEM_callocN(sizeof(FluidsimSettings), "fluidsimsettings");
+		int surfdataPathMax = FILE_MAX;
 		
 		fluidmd->fss = fss;
 		
@@ -104,7 +105,22 @@ void fluidsim_init(FluidsimModifierData *fluidmd)
 
 		/*  elubie: changed this to default to the same dir as the render output
 		to prevent saving to C:\ on Windows */
-		BLI_strncpy(fss->surfdataPath, BLI_temporary_dir(), FILE_MAX);
+		if (G.relbase_valid) {		/* is the .blend saved? */
+			/* subfolder next to saved file */
+			BLI_strncpy(fss->surfdataPath, "//fluid_cache", surfdataPathMax);
+			BLI_add_slash(fss->surfdataPath);
+		}
+		else {
+			/* subfolder in temp. directory */
+			BLI_strncpy(fss->surfdataPath, BLI_temporary_dir(), surfdataPathMax);
+			surfdataPathMax -= strlen(fss->surfdataPath);
+			if (surfdataPathMax > 1) {
+				BLI_strncpy(fss->surfdataPath+strlen(fss->surfdataPath), "fluid_cache", surfdataPathMax);
+				surfdataPathMax -= strlen("fluid_cache");
+				if (surfdataPathMax > 1)
+					BLI_add_slash(fss->surfdataPath);
+			}
+		}
 
 		// first init of bounding box
 		// no bounding box needed
diff --git a/source/blender/modifiers/intern/MOD_ocean.c b/source/blender/modifiers/intern/MOD_ocean.c
index a61cc856662..55d121737c1 100644
--- a/source/blender/modifiers/intern/MOD_ocean.c
+++ b/source/blender/modifiers/intern/MOD_ocean.c
@@ -34,10 +34,12 @@
 #include "DNA_scene_types.h"
 
 #include "BKE_cdderivedmesh.h"
+#include "BKE_global.h"
 #include "BKE_modifier.h"
 #include "BKE_ocean.h"
 #include "BKE_utildefines.h"
 
+#include "BLI_blenlib.h"
 #include "BLI_math.h"
 #include "BLI_math_inline.h"
 #include "BLI_utildefines.h"
@@ -95,6 +97,7 @@ static void initData(ModifierData *md)
 {
 #ifdef WITH_OCEANSIM
 	OceanModifierData *omd = (OceanModifierData*) md;
+	int cachepathmax = sizeof(omd->cachepath);
 
 	omd->resolution = 7;
 	omd->spatial_size = 50;
@@ -122,7 +125,22 @@ static void initData(ModifierData *md)
 	omd->repeat_x = 1;
 	omd->repeat_y = 1;
 
-	BLI_strncpy(omd->cachepath, "//ocean_cache", sizeof(omd->cachepath));
+	if (G.relbase_valid) {		/* is the .blend saved? */
+		/* subfolder next to saved file */
+		BLI_strncpy(omd->cachepath, "//ocean_cache", cachepathmax);
+		BLI_add_slash(omd->cachepath);
+	}
+	else {
+		/* subfolder in temp. directory */
+		BLI_strncpy(omd->cachepath, BLI_temporary_dir(), cachepathmax);
+		cachepathmax -= strlen(omd->cachepath);
+		if (cachepathmax > 1) {
+			BLI_strncpy(omd->cachepath+strlen(omd->cachepath), "ocean_cache", cachepathmax);
+			cachepathmax -= strlen("ocean_cache");
+			if (cachepathmax > 1)
+				BLI_add_slash(omd->cachepath);
+		}
+	}
 
 	omd->cached = 0;
 	omd->bakestart = 1;