From 8050beed563d1ce597dd13ad6a5bc589cf768a6f Mon Sep 17 00:00:00 2001
From: Alula <julekonopinska@gmail.com>
Date: Sun, 1 Nov 2020 20:08:52 +0100
Subject: [PATCH] add <SMP

---
 src/stage.rs       | 10 +++++++++-
 src/text_script.rs | 11 ++++++++++-
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/src/stage.rs b/src/stage.rs
index 35778d5..c7d98ba 100644
--- a/src/stage.rs
+++ b/src/stage.rs
@@ -454,7 +454,15 @@ impl Stage {
         Ok(npc_data)
     }
 
-    /// Returns true if smoke should be emitted
+    pub fn tile_at(&self, x: usize, y: usize) -> u8 {
+        if let Some(&tile) = self.map.tiles.get(y * self.map.width + x) {
+            tile
+        } else {
+            0
+        }
+    }
+
+    /// Changes map tile. Returns true if smoke should be emitted
     pub fn change_tile(&mut self, x: usize, y: usize, tile_type: u8) -> bool {
         if let Some(ptr) = self.map.tiles.get_mut(y * self.map.width + x) {
             if *ptr != tile_type {
diff --git a/src/text_script.rs b/src/text_script.rs
index 526d144..8ac3662 100644
--- a/src/text_script.rs
+++ b/src/text_script.rs
@@ -891,6 +891,15 @@ impl TextScriptVM {
 
                         exec_state = TextScriptExecutionState::Running(event, cursor.position() as u32);
                     }
+                    OpCode::SMP => {
+                        let pos_x = read_cur_varint(&mut cursor)? as usize;
+                        let pos_y = read_cur_varint(&mut cursor)? as usize;
+                        
+                        let tile_type = game_scene.stage.tile_at(pos_x, pos_y);
+                        game_scene.stage.change_tile(pos_x, pos_y, tile_type.wrapping_sub(1));
+
+                        exec_state = TextScriptExecutionState::Running(event, cursor.position() as u32);
+                    }
                     OpCode::CMP => {
                         let pos_x = read_cur_varint(&mut cursor)? as usize;
                         let pos_y = read_cur_varint(&mut cursor)? as usize;
@@ -1387,7 +1396,7 @@ impl TextScriptVM {
                         exec_state = TextScriptExecutionState::Running(event, cursor.position() as u32);
                     }
                     // Two operand codes
-                    OpCode::SKJ | OpCode::SMP => {
+                    OpCode::SKJ => {
                         let par_a = read_cur_varint(&mut cursor)?;
                         let par_b = read_cur_varint(&mut cursor)?;