From 9da35b5854f69ed27a6a1c00458ade697a6dd4ae Mon Sep 17 00:00:00 2001
From: Bill Rossi <bassguitarbill@gmail.com>
Date: Sat, 18 Jan 2025 06:34:36 -0500
Subject: [PATCH] Predicates

---
 01_text_adventure/action.c    |  9 ++++++--
 01_text_adventure/main.c      | 10 ++++++++-
 01_text_adventure/predicate.c | 41 +++++++++++++++++++++++++++++++++++
 01_text_adventure/predicate.h |  2 ++
 4 files changed, 59 insertions(+), 3 deletions(-)

diff --git a/01_text_adventure/action.c b/01_text_adventure/action.c
index 98ad862..6ea9d57 100644
--- a/01_text_adventure/action.c
+++ b/01_text_adventure/action.c
@@ -23,8 +23,13 @@ void load_action(Game *g, char *line) {
 
   line_token = strtok_r(NULL, "|", &line_token_guy);
 
-  // predicate bullshit
-  // char *command_predicate_strtok = strtok_r
+  strcpy(command_buffer, line_token);
+  command_word = strtok_r(command_buffer, " &", &command_token_guy);
+  while (command_word != NULL) {
+    Predicate *p = create_predicate(g, command_word);
+    action->predicates[action->predicates_count++] = p;
+    command_word = strtok_r(NULL, " &", &command_token_guy);
+  }
 
   line_token = strtok_r(NULL, "|", &line_token_guy);
   action->priority = atoi(line_token);
diff --git a/01_text_adventure/main.c b/01_text_adventure/main.c
index ae4342f..34132a7 100644
--- a/01_text_adventure/main.c
+++ b/01_text_adventure/main.c
@@ -26,7 +26,15 @@ int main(void) {
       for (int j = 0; j < g->actions->actions[i].words_count; j++) {
 	printf("%s ", g->actions->actions[i].words[j]->word);
       }
-      printf("|preds|%d|%s|effects", g->actions->actions[i].priority, g->actions->actions[i].description);
+
+      printf("|");
+      for (int j = 0; j < g->actions->actions[i].predicates_count; j++) {
+	if (j > 0) printf(" & ");
+	fflush(stdout);
+	print_predicate(g->actions->actions[i].predicates[j]);
+      }
+
+      printf("|%d|%s|effects", g->actions->actions[i].priority, g->actions->actions[i].description);
 
       printf("\n");
     }
diff --git a/01_text_adventure/predicate.c b/01_text_adventure/predicate.c
index 73e60f4..6e4d099 100644
--- a/01_text_adventure/predicate.c
+++ b/01_text_adventure/predicate.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include "game.h"
 #include "flag.h"
@@ -17,3 +18,43 @@ bool predicate_fulfilled(Game *g, Predicate *p) {
     return false;
   }
 }
+
+Predicate *create_predicate(Game *g, const char *string) {
+  printf("Predicate from %s:\n", string);
+  Predicate *p = malloc(sizeof(Predicate));
+  char *buffer = malloc(strlen(string) + 1);
+  strcpy(buffer, string);
+  char *strtok_guy;
+
+  char *token = strtok_r(buffer, "(", &strtok_guy);
+  if (strcmp(token, "*") == 0) {
+    p->type = PREDICATE_TRUE;
+  } else if (strcmp(token, "IN") == 0) {
+    p->type = PREDICATE_IN_ROOM;
+    token = strtok_r(NULL, ")", &strtok_guy);
+    p->argument = malloc(strlen(token) + 1);
+    strcpy(p->argument, token);
+  } else if (strcmp(token, "ENABLED") == 0) {
+    p->type = PREDICATE_FLAG_ENABLED;
+    token = strtok_r(NULL, ")", &strtok_guy);
+    p->argument = malloc(strlen(token) + 1);
+    strcpy(p->argument, token);
+  }
+
+  free(buffer);
+  return p;
+}
+
+void print_predicate(Predicate *p) {
+  switch (p->type) {
+  case PREDICATE_TRUE:
+    printf("*");
+    break;
+  case PREDICATE_IN_ROOM:
+    printf("IN(%s)", p->argument);
+    break;
+  case PREDICATE_FLAG_ENABLED:
+    printf("ENABLED(%s)", p->argument);
+    break;
+  }
+}
diff --git a/01_text_adventure/predicate.h b/01_text_adventure/predicate.h
index 7ca0538..39f5ae2 100644
--- a/01_text_adventure/predicate.h
+++ b/01_text_adventure/predicate.h
@@ -18,5 +18,7 @@ struct Predicate {
 };
 
 bool predicate_fulfilled(Game *g, Predicate *p);
+Predicate *create_predicate(Game *g, const char *string);
+void print_predicate(Predicate *p);
 
 #endif