From ae654356f843bb42a3c72d57b528d87aa63cf66d Mon Sep 17 00:00:00 2001
From: Kelly Rauchenberger <fefferburbia@gmail.com>
Date: Tue, 23 Feb 2021 10:30:16 -0500
Subject: Added a clipping mode (for testing!)

This allows walking through solid objects. It can be enabled and disabled using StartClipping() and StopClipping() in the debug console. It should not be used in any actual scripts.
---
 res/scripts/common.lua   | 16 ++++++++++++++++
 src/character_system.cpp |  6 +++---
 src/script_system.cpp    |  3 ++-
 src/sprite.h             |  1 +
 4 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/res/scripts/common.lua b/res/scripts/common.lua
index 45b596d..af25333 100644
--- a/res/scripts/common.lua
+++ b/res/scripts/common.lua
@@ -284,3 +284,19 @@ end
 function RemoveExpression(spriteName)
   DestroyNamedSprite(AliasForSpriteExpression(spriteName))
 end
+
+--- Turns on clipping for the player.
+-- This allows walking through solid objects. For debug only!
+function StartClipping()
+  local playerId = getPlayerSprite()
+  local playerSprite = getSprite(playerId)
+  playerSprite.clipping = true
+end
+
+--- Turns off clipping for the player.
+-- For debug only!
+function StopClipping()
+  local playerId = getPlayerSprite()
+  local playerSprite = getSprite(playerId)
+  playerSprite.clipping = false
+end
diff --git a/src/character_system.cpp b/src/character_system.cpp
index 6e15eac..99b6929 100644
--- a/src/character_system.cpp
+++ b/src/character_system.cpp
@@ -117,7 +117,7 @@ void CharacterSystem::tick(double dt) {
         CollisionResult collision = game_.getSystem<TransformSystem>().checkCollision(spriteId, pLoc, sprite.dir);
         bool blocked = collision.horiz.blocked || collision.vert.blocked;
 
-        if (collision.horiz.blocked) {
+        if (collision.horiz.blocked && !sprite.clipping) {
           pLoc.x() = sprite.loc.x();//(newColPosDR * map.getTileSize() - (collisionBox / 2)).x() - 1;
         } else if (collision.horiz.colliderSprite != -1) {
           Sprite& collider = game_.getSprite(collision.horiz.colliderSprite);
@@ -127,7 +127,7 @@ void CharacterSystem::tick(double dt) {
           }
         }
 
-        if (collision.vert.blocked) {
+        if (collision.vert.blocked && !sprite.clipping) {
           pLoc.y() = sprite.loc.y();//(newColPosDR * map.getTileSize() - (collisionBox / 2)).x() - 1;
         } else if (collision.vert.colliderSprite != -1) {
           Sprite& collider = game_.getSprite(collision.vert.colliderSprite);
@@ -137,7 +137,7 @@ void CharacterSystem::tick(double dt) {
           }
         }
 
-        if (blocked && sprite.characterState == CharacterState::Running) {
+        if (blocked && sprite.characterState == CharacterState::Running && !sprite.clipping) {
           stopRunning(spriteId);
           game_.getMixer().playSound("../res/sfx/bump.wav");
         }
diff --git a/src/script_system.cpp b/src/script_system.cpp
index 769a872..2e02edf 100644
--- a/src/script_system.cpp
+++ b/src/script_system.cpp
@@ -37,7 +37,8 @@ ScriptSystem::ScriptSystem(Game& game) : game_(game) {
       return sprite.frames[sprite.animations[sprite.animationId].frameIndices[sprite.animationFrame]];
     },
     "persistent", &Sprite::persistent,
-    "paused", &Sprite::paused);
+    "paused", &Sprite::paused,
+    "clipping", &Sprite::clipping);
 
   engine_.new_usertype<MessageSystem>(
     "message",
diff --git a/src/sprite.h b/src/sprite.h
index 35ca7aa..3d2e9df 100644
--- a/src/sprite.h
+++ b/src/sprite.h
@@ -77,6 +77,7 @@ public:
   CharacterState characterState = CharacterState::Still;
   StepType stepType = StepType::none;
   int runningSfxChannel = -1;
+  bool clipping = false;
 
   // Input
   bool controllable = false;
-- 
cgit 1.4.1