From 1cd528e7ef3f465c88531cbcab32451cc089f580 Mon Sep 17 00:00:00 2001
From: Madeline Busig <madeline.busig@outlook.com>
Date: Wed, 7 May 2025 00:11:12 -0700
Subject: [PATCH] Add parsing ruleset

---
 include/fractal.hpp | 15 +++++--
 src/fractal.cpp     | 95 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 107 insertions(+), 3 deletions(-)

diff --git a/include/fractal.hpp b/include/fractal.hpp
index 3541799..8d4829b 100644
--- a/include/fractal.hpp
+++ b/include/fractal.hpp
@@ -251,12 +251,21 @@ class generator_t {
 	etl::vector<weighted_group_t, g_max_wgroups> m_weighted_groups;
 	etl::vector<group_output_t, g_max_groups> m_group_outputs;
 	etl::vector<token_match_t, g_max_tokens> m_token_matches;
-	group_id_t m_axiom;
 
-	uint32_t m_gen_num;
+	group_id_t m_axiom;
+	bool m_empty;
+
+	uint32_t m_gen_num = 0;
+
+	void parse_group_characteristic(group_id_t gid, group_output_t& output, const ruleset_t& ruleset);
 
 public:
-	generator_t(const ruleset_t& ruleset);
+	generator_t() : m_empty(true), m_axiom(0) { }
+	generator_t(const ruleset_t& ruleset) : m_empty(false), m_axiom(0) {
+		parse_ruleset(ruleset);
+	}
+
+	void parse_ruleset(const ruleset_t& ruleset);
 
 	/**
 	 * @brief Steps one generation, outputting generated markers
diff --git a/src/fractal.cpp b/src/fractal.cpp
index e9eb45b..b04d20d 100644
--- a/src/fractal.cpp
+++ b/src/fractal.cpp
@@ -110,6 +110,101 @@ branch_rule_id_t ruleset_t::add_branch_rule_weighted(token_id_t match, weighted_
 	return m_branch_rules.size() - 1;
 }
 
+// ---------- GENERATOR ----------
+
+void generator_t::parse_ruleset(const ruleset_t& ruleset) {
+	mlog::debug << "Parsing ruleset" << endl;
+
+	m_axiom = ruleset.get_axiom();
+
+	for (weighted_group_id_t wgid = 0; wgid < ruleset.num_weighted_groups(); ++wgid) {
+		m_weighted_groups.push_back(ruleset.get_weighted_group(wgid));
+	}
+
+	mlog::debug << "Copied " << m_weighted_groups.size() << " weighted groups" << endl;
+
+	for (token_id_t tok = 0; tok < ruleset.num_tokens(); ++tok) {
+		m_token_matches.push_back(token_match_t());
+		token_match_t& cur_match = m_token_matches.back();
+
+		ruleset.find_token_matches(tok, cur_match.m_groups, cur_match.m_wgroups);
+	}
+
+	for (group_id_t gid = 0; gid < ruleset.num_groups(); ++gid) {
+		m_group_outputs.push_back(group_output_t());
+
+		parse_group_characteristic(gid, m_group_outputs.back(), ruleset);
+	}
+
+	
+	m_empty = false;
+}
+
+void generator_t::parse_group_characteristic(group_id_t id, group_output_t& output, const ruleset_t& ruleset) {
+	mlog::debug << "Parsing group characteristic for group " << id << endl;
+
+	vec2 cur_pos(0, 0);
+	mat<2, 2> cur_orient = create_rotation(fixed(1), fixed(0));
+
+	const group_characteristic_t& charac = ruleset.get_group_characteristic(id);
+
+	for (uint32_t i = 0; i < charac.m_factor; ++i) {
+		for (token_id_t tokid : charac.m_token_ids) {
+			const token_t& tok = ruleset.get_token(tokid);
+
+			// Process token marking
+			if (tok.m_mark != 0) {
+				marker_t marker { cur_pos, tok.m_mark };
+
+				output.m_child_markers.push_back(marker);
+				mlog::debug << "Group " << id << " has marker ID: " << tok.m_mark << endl;
+				mlog::debug << "  at position " << cur_pos << ", cos(angle) = " << cur_orient.e[0][0] << ", sin(angle) = " << cur_orient.e[1][0] << endl;
+			}
+
+			// Process token groups
+			const token_match_t& match = m_token_matches.at(tokid);
+
+			// Regular groups
+			for (group_id_t groupid : match.m_groups) {
+				leaf_t leaf;
+				leaf.m_group_id = groupid;
+				leaf.m_orientation = cur_orient;
+				leaf.m_position = cur_pos;
+
+				output.m_child_leafs.push_back(leaf);
+
+				mlog::debug << "Group " << id << " has child leaf w/ group id " << groupid << endl;
+				mlog::debug << "  at position " << cur_pos << ", cos(angle) = " << cur_orient.e[0][0] << ", sin(angle) = " << cur_orient.e[1][0] << endl;
+			}
+
+			// Weighted groups
+			for (weighted_group_id_t wgroupid : match.m_wgroups) {
+				weighted_leaf_t wleaf;
+				wleaf.m_weighted_group_id = wgroupid;
+				wleaf.m_orientation = cur_orient;
+				wleaf.m_position = cur_pos;
+
+				output.m_child_wleafs.push_back(wleaf);
+
+				mlog::debug << "Group " << id << " has weighted child leaf w/ wgroup " << wgroupid << endl;
+				mlog::debug << "  at position " << cur_pos << ", cos(angle) = " << cur_orient.e[0][0] << ", sin(angle) = " << cur_orient.e[1][0] << endl;
+			}
+
+			// Apply the token's transformation
+			switch (tok.m_type) {
+			case token_type_e::walk:
+				cur_pos = cur_pos + cur_orient * vec2(0, tok.m_value);
+				mlog::debug << "Transforming with walk of " << tok.m_value << endl;
+				break;
+			case token_type_e::rotate:
+				cur_orient = create_rotation(tok.m_value, tok.m_value2) * cur_orient;
+				mlog::debug << "Transforming with rotation of " << tok.m_value << endl;
+				break;
+			default:;
+			}
+		}
+	}
+}
 
 #if 0
 token_id_t generator_t::add_token(token_type_e type, mtl::fixed value) {