From 2beabde7e49dc8c8236f79f76c3f1988f7cc6f49 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Mon, 18 Apr 2022 13:00:56 +0100
Subject: [PATCH] Plumbing for "multigrab" piece API call

We can now pass this through to a piece.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 daemon/api.rs    | 17 +++++++++++++++++
 src/currency.rs  |  2 +-
 src/gamestate.rs |  7 +++++++
 3 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/daemon/api.rs b/daemon/api.rs
index 206b9a70..54f24271 100644
--- a/daemon/api.rs
+++ b/daemon/api.rs
@@ -563,6 +563,22 @@ api_route!{
   }
 }
 
+api_route!{
+  api_multigrab, "/_/api/multigrab",
+  struct ApiPieceMultigrab {
+    n: MultigrabQty,
+  }
+
+  as:
+  #[throws(ApiPieceOpError)]
+  fn op(&self, mut a: ApiPieceOpArgs) -> PieceUpdate {
+    if ! a.ipc.special.multigrab { throw!(Ia::BadPieceStateForOperation) }
+    let pri = a.pri()?;
+    let y = pri.fully_visible().ok_or(Ia::Occultation)?;
+    a.ipc.show(y).op_multigrab(a, pri, self.n)?
+  }
+}
+
 api_route!{
   api_uo, "/_/api/k",
   struct ApiPieceUo {
@@ -628,5 +644,6 @@ pub fn routes() -> impl HttpServiceFactory {
     api_wrest,
     api_pin,
     api_uo,
+    api_multigrab,
   ]
 }
diff --git a/src/currency.rs b/src/currency.rs
index 29e632bf..c14360b8 100644
--- a/src/currency.rs
+++ b/src/currency.rs
@@ -17,7 +17,7 @@ use crate::prelude::*;
 
 const QTY_FONT_SIZE: f64 = 6.;
 
-type Qty = u32;
+type Qty = MultigrabQty;
 
 #[derive(Debug,Serialize,Deserialize)]
 pub struct Spec {
diff --git a/src/gamestate.rs b/src/gamestate.rs
index 68ea20ce..701d5d0d 100644
--- a/src/gamestate.rs
+++ b/src/gamestate.rs
@@ -35,6 +35,8 @@ pub struct ZLevel {
   pub zg: Generation,
 }
 
+pub type MultigrabQty = u32;
+
 // ---------- game state ----------
 
 #[derive(Debug,Serialize,Deserialize)]
@@ -242,6 +244,11 @@ pub trait PieceTrait: PieceBaseTrait + Send + Debug + 'static {
     None
   }
 
+  fn op_multigrab(&self, _: ApiPieceOpArgs, _: PieceRenderInstructions,
+                  _: MultigrabQty) -> Result<PieceUpdate,ApiPieceOpError> {
+    Err(Ia::BadPieceStateForOperation)?
+  }
+
   #[throws(IE)]
   fn abs_bbox(&self, p: &GPiece) -> Rect {
     Rect { corners: self.bbox_approx()?.corners.iter().map(
-- 
2.30.2