From cb1421b91b2f8ffa71f7ee009dad4e237ed36e2c Mon Sep 17 00:00:00 2001
From: Star Rauchenberger <fefferburbia@gmail.com>
Date: Tue, 6 Jul 2021 11:38:05 -0400
Subject: Added moonwalking to pathfinding behaviour

This flag will make the sprite appear to be walking backwards.
---
 res/scripts/common.lua   | 3 ++-
 src/behaviour_system.cpp | 5 +++++
 src/behaviour_system.h   | 3 ++-
 src/sprite.h             | 1 +
 4 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/res/scripts/common.lua b/res/scripts/common.lua
index 46f2275..559d8bd 100644
--- a/res/scripts/common.lua
+++ b/res/scripts/common.lua
@@ -48,7 +48,8 @@ ChangeMapOptions = {
 }
 
 PathfindingOptions = {
-  CARDINAL_DIRECTIONS_ONLY = 1
+  CARDINAL_DIRECTIONS_ONLY = 1,
+  MOONWALKING              = 2  -- Causes the sprite to walk backwards
 }
 
 gamestate = {}
diff --git a/src/behaviour_system.cpp b/src/behaviour_system.cpp
index ce980f6..f4dc388 100644
--- a/src/behaviour_system.cpp
+++ b/src/behaviour_system.cpp
@@ -7,6 +7,7 @@
 #include "character_system.h"
 #include "direction.h"
 #include "transform_system.h"
+#include "animation_system.h"
 
 bool pathfindingOptionsContains(PathfindingOptions options, PathfindingOptions value) {
   return (static_cast<int>(options) & static_cast<int>(value)) != 0;
@@ -71,6 +72,9 @@ void BehaviourSystem::tick(double dt) {
       } else {
         if (sprite.characterState == CharacterState::Still || sprite.movementDir != sprite.path.front().dir) {
           game_.getSystem<CharacterSystem>().moveInDirection(spriteId, sprite.path.front().dir);
+          if (sprite.moonwalking) {
+            game_.getSystem<AnimationSystem>().setSpriteDirection(spriteId, oppositeDirection(sprite.path.front().dir));
+          }
         }
       }
     }
@@ -83,6 +87,7 @@ void BehaviourSystem::directSpriteToLocation(int spriteId, vec2i pos, Pathfindin
   sprite.behaviourType = BehaviourType::Path;
   sprite.pathfindingDestination = pos;
   sprite.cardinalDirectionsOnly = pathfindingOptionsContains(options, PathfindingOptions::CardinalDirectionsOnly);
+  sprite.moonwalking = pathfindingOptionsContains(options, PathfindingOptions::Moonwalking);
 
   createPath(spriteId);
 }
diff --git a/src/behaviour_system.h b/src/behaviour_system.h
index 1ddce4a..d338c79 100644
--- a/src/behaviour_system.h
+++ b/src/behaviour_system.h
@@ -7,7 +7,8 @@
 
 enum class PathfindingOptions {
   None                    = 0,
-  CardinalDirectionsOnly  = 1 << 0
+  CardinalDirectionsOnly  = 1 << 0,
+  Moonwalking             = 1 << 1
 };
 
 class Game;
diff --git a/src/sprite.h b/src/sprite.h
index 406053e..86474ca 100644
--- a/src/sprite.h
+++ b/src/sprite.h
@@ -134,6 +134,7 @@ public:
   BehaviourType behaviourType = BehaviourType::None;
   vec2i pathfindingDestination;
   bool cardinalDirectionsOnly = false;
+  bool moonwalking = false;
   std::deque<PathfindingInstruction> path;
   int followSpriteId = -1;
 
-- 
cgit 1.4.1