From fd3cd887b6d76b542773f9eeee161a0ff169f114 Mon Sep 17 00:00:00 2001
From: Alexander Batalov <alex.batalov@gmail.com>
Date: Sat, 2 Sep 2023 16:40:18 +0300
Subject: [PATCH] Add target_load

---
 src/mapper/mp_targt.cc | 56 +++++++++++++++++++++++++++++++++++++++++-
 src/mapper/mp_targt.h  |  3 ++-
 2 files changed, 57 insertions(+), 2 deletions(-)

diff --git a/src/mapper/mp_targt.cc b/src/mapper/mp_targt.cc
index 6d2a75a..6d4ba60 100644
--- a/src/mapper/mp_targt.cc
+++ b/src/mapper/mp_targt.cc
@@ -139,6 +139,60 @@ int target_header_load()
     return 0;
 }
 
+// 0x49B6BC
+int target_load(int pid, TargetSubNode** subnode_ptr)
+{
+    char path[COMPAT_MAX_PATH];
+    size_t len;
+    char* extension;
+    FILE* stream;
+    TargetSubNode* subnode;
+
+    target_make_path(path, pid);
+
+    len = strlen(path);
+    path[len] = '\\';
+    _proto_list_str(pid, path + len + 1);
+
+    extension = strchr(path + len + 1, '.');
+    if (extension != NULL) {
+        strcpy(extension + 1, "tgt");
+    } else {
+        strcat(path, ".tgt");
+    }
+
+    stream = fopen(path, "rb");
+    if (stream == NULL) {
+        *subnode_ptr = NULL;
+        return -1;
+    }
+
+    if (target_find_free_subnode(&subnode) == -1) {
+        *subnode_ptr = NULL;
+        // FIXME: Leaks `stream`.
+        return -1;
+    }
+
+    fread(subnode, sizeof(TargetSubNode), 1, stream);
+
+    *subnode_ptr = subnode;
+
+    while (subnode->next != NULL) {
+        subnode->next = (TargetSubNode*)internal_malloc(sizeof(TargetSubNode));
+        if (subnode->next == NULL) {
+            // FIXME: Leaks `stream`.
+            return -1;
+        }
+
+        subnode = subnode->next;
+        fread(subnode, sizeof(TargetSubNode), 1, stream);
+    }
+
+    fclose(stream);
+
+    return 0;
+}
+
 // 0x49B9C0
 int target_find_free_subnode(TargetSubNode** subnode_ptr)
 {
@@ -151,7 +205,7 @@ int target_find_free_subnode(TargetSubNode** subnode_ptr)
     *subnode_ptr = &(node->subnode);
 
     node->subnode.field_0 = -1;
-    node->subnode.field_28 = 0;
+    node->subnode.next = NULL;
     node->next = targetlist.tail;
 
     targetlist.tail = node;
diff --git a/src/mapper/mp_targt.h b/src/mapper/mp_targt.h
index 2769cc4..d85b20f 100644
--- a/src/mapper/mp_targt.h
+++ b/src/mapper/mp_targt.h
@@ -14,7 +14,7 @@ typedef struct TargetSubNode {
     int field_1C;
     int field_20;
     int field_24;
-    int field_28;
+    struct TargetSubNode* next;
     int field_2C;
     int field_30;
     int field_34;
@@ -53,6 +53,7 @@ int target_init();
 int target_exit();
 int target_header_save();
 int target_header_load();
+int target_load(int pid, TargetSubNode** subnode_ptr);
 int target_find_free_subnode(TargetSubNode** subnode_ptr);
 int pick_rot();
 int target_pick_global_var(int* value_ptr);