Reset noodle to default position if not connected to another node

include/ui.h

@@ -20,6 +20,7 @@ typedef struct ui_ctx ui_ctx;
 
 enum ui_elem_type {
   UI_ELEM_NODE,
+  UI_ELEM_NOODLE,
   UI_ELEM_BUTTON,
 
   COUNT_UI_ELEM,
@@ -55,6 +56,7 @@ struct ui_ctx {
   bool mouse_down;
   bool mouse_up;
   const window *wnd;
+  ui_elem elements[MAX_UI_ELEMENTS];
 };
 
 void init_ui_ctx(ui_ctx *ctx);

src/ui.c

@@ -69,6 +69,11 @@ bool ui_button(const window *wnd, ui_ctx *ctx, rect rec,
   }
 
   u64 id = (ctx->count)++;
+  ctx->elements[id] = (ui_elem){
+      .id = id,
+      .rect = rec,
+      .type = UI_ELEM_BUTTON,
+  };
 
   fill_rect(wnd, rec, colours.fill);
   draw_rect(wnd, rec, colours.border);
@@ -102,6 +107,11 @@ ui_node_elem ui_node(const window *wnd, ui_ctx *ctx, ui_node_elem node,
   }
 
   u64 id = (ctx->count)++;
+  ctx->elements[id] = (ui_elem){
+      .id = id,
+      .rect = node.rec,
+      .type = UI_ELEM_NODE,
+  };
 
   line ln = {0};
   f64 angle = 90.0;
@@ -109,29 +119,29 @@ ui_node_elem ui_node(const window *wnd, ui_ctx *ctx, ui_node_elem node,
   i64 delta_multiplier = node.inputs % 2 == 0 ? -1 : 0;
 
   for (u64 i = 0; i < node.inputs; ++i) {
+    f64 new_angle = angle + angle_delta * delta_multiplier;
+
     if (node.noodles[i].p0.x == node.noodles[i].p1.x &&
         node.noodles[i].p0.y == node.noodles[i].p1.y) {
       point origin = {node.rec.topleft.x + node.rec.w / 2,
                       node.rec.topleft.y + node.rec.h / 2};
 
-      f64 new_angle = angle + angle_delta * delta_multiplier;
-
       ln = line_from_origin(origin, new_angle, DEFAULT_NOODLE_LENGTH);
-
-      if (delta_multiplier > 0) {
-        angle = new_angle;
-      }
-
-      if (delta_multiplier == 0) {
-        delta_multiplier = -1;
-      } else {
-        delta_multiplier *= -1;
-      }
     } else {
       ln = node.noodles[i];
     }
 
     node.noodles[i] = ui_noodle(wnd, ctx, ln, colours, node.rec);
+
+    if (delta_multiplier > 0) {
+      angle = new_angle;
+    }
+
+    if (delta_multiplier == 0) {
+      delta_multiplier = -1;
+    } else {
+      delta_multiplier *= -1;
+    }
   }
 
   fill_rect(wnd, node.rec, colours.fill);
@@ -181,6 +191,11 @@ internal line ui_noodle(const window *wnd, ui_ctx *ctx, line ln,
   }
 
   u64 id = (ctx->count)++;
+  ctx->elements[id] = (ui_elem){
+      .id = id,
+      .rect = (rect){0},
+      .type = UI_ELEM_NOODLE,
+  };
 
   bool horizontal = ln.p0.y == ln.p1.y;
 
@@ -254,7 +269,11 @@ internal line ui_noodle(const window *wnd, ui_ctx *ctx, line ln,
   if (ctx->mouse_up) {
     ctx->hovered = ctx->active = -1;
     ctx->rel_x = ctx->rel_y = 0;
-    return ln;
+    return (line){
+        .p0 = ln.p0,
+        .p1 = ln.p0,
+    };
+    // return ln;
   }
 
   if (ctx->hovered == id && ctx->active == id) {