# HG changeset patch
# User John Tsiombikas <nuclear@member.fsf.org>
# Date 1346887978 -10800
# Node ID 1b0db53d5b5bf260db7173fc5016233ee411256f
# Parent  55a2aa4443f7283acbed815a829aebbebf004603
started writting config file for the particle system attributes

diff -r 55a2aa4443f7 -r 1b0db53d5b5b examples/simple/simple.psys
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/simple/simple.psys	Thu Sep 06 02:32:58 2012 +0300
@@ -0,0 +1,36 @@
+# Particle system definition file format example
+#
+# lines of key = value pairs.
+# animated attributes can be defined as key(time) = value.
+# time defaults to 0 if missing. time values can have an optional s suffix,
+# signifying seconds, otherwise they are assumed to be in milliseconds.
+#
+# string values enclosed in double quotes
+# vector values enclosed in square brackets [x y z]
+# randomized values have a pair of values/vectors separated by a tilde:
+# center ~ range. If the range is missing, it's assumed to be 0.
+
+# texture: string
+texture = "pimg.png"
+# spawn_range: track3
+spawn_range = [0.3 0.3 0.3]
+# rate: track
+# life: randomized track
+life = 2
+# size: randomized track
+# dir: randomized track3
+dir = [0 0 0] ~ [4 4 4]
+# grav: track3
+grav = [0 -4 0]
+# drag: val
+drag = 2
+
+# particle attributes
+# pcolor: track3
+pcolor(0) = [1 0.6 0.4]
+pcolor(1000) = [0.6 0.3 1]
+# palpha: track
+palpha(0) = 1
+palpha(700) = 1
+palpha(1000) = 0
+# psize: track
diff -r 55a2aa4443f7 -r 1b0db53d5b5b src/pattr.c
--- a/src/pattr.c	Wed Aug 29 05:11:47 2012 +0300
+++ b/src/pattr.c	Thu Sep 06 02:32:58 2012 +0300
@@ -7,6 +7,7 @@
 
 static int init_particle_attr(struct psys_particle_attributes *pattr);
 static void destroy_particle_attr(struct psys_particle_attributes *pattr);
+static char *stripspace(char *str);
 
 static void *tex_cls;
 static unsigned int (*load_texture)(const char*, void*) = psys_gl_load_texture;
@@ -125,7 +126,30 @@
 
 int psys_load_attr_stream(struct psys_attributes *attr, FILE *fp)
 {
-	return -1;	/* TODO */
+	int lineno = 0;
+	char buf[512];
+
+	psys_init_attr(attr);
+
+	while(fgets(buf, sizeof buf, fp)) {
+		char *key, *valstr;
+
+		lineno++;
+
+		key = stripspace(buf);
+		if(key[0] == '#' || !key[0]) {
+			continue;	// skip empty lines and comments
+		}
+
+		if(!(valstr = strchr(buf, '='))) {
+			fprintf(stderr "%s: invalid input: %s\n", __func__, line);
+			return -1;
+		}
+		*valstr++ = 0;
+		valstr = stripspace(valstr);
+
+
+	}
 }
 
 
@@ -147,3 +171,19 @@
 {
 	return -1;	/* TODO */
 }
+
+
+static char *stripspace(char *str)
+{
+	char *end;
+
+	while(*str && isspace(*str)) {
+		str++;
+	}
+
+	end = str + strlen(str);
+	while(end >= str && isspace(*end)) {
+		*end-- = 0;
+	}
+	return str;
+}
diff -r 55a2aa4443f7 -r 1b0db53d5b5b src/pattr_parser.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/pattr_parser.c	Thu Sep 06 02:32:58 2012 +0300
@@ -0,0 +1,6 @@
+#include "pattr_parser.h"
+
+struct cfg_node *psys_parse(const char *buf)
+{
+
+}
diff -r 55a2aa4443f7 -r 1b0db53d5b5b src/pattr_parser.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/pattr_parser.h	Thu Sep 06 02:32:58 2012 +0300
@@ -0,0 +1,21 @@
+#ifndef PATTR_PARSER_H_
+#define PATTR_PARSER_H_
+
+struct cfg_value {
+	int nelem;
+	float v[4];
+};
+
+struct cfg_node {
+	char *name, *valstr;
+
+	long tm;
+	struct cfg_value val, range;
+
+	struct cfg_node *next;
+};
+
+struct cfg_node *psys_parse(const char *buf);
+
+
+#endif	/* PATTR_PARSER_H_ */