From c63a4bb80813b877abd8163093a791c2d8fbd7a6 Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop+git@gmail.com>
Date: Sun, 18 Oct 2009 22:20:22 +0000
Subject: [PATCH] Engine calling update_event, key_pressed_event, and
 key_released_event

git-svn-id: svn://anubis/anaglym/trunk@98 99a6e188-d820-4881-8870-2d33a10e2619
---
 Engine.cc            | 25 ++++++++++++++++++++++++-
 Engine.h             |  1 +
 anaglym.cc           |  2 +-
 tests/ballstairs.lua |  8 +++++++-
 4 files changed, 33 insertions(+), 3 deletions(-)

diff --git a/Engine.cc b/Engine.cc
index 263b76a..f423d25 100644
--- a/Engine.cc
+++ b/Engine.cc
@@ -2,6 +2,7 @@
 #include "ag.h"
 #include "anaglym.h"
 #include "Engine.h"
+#include "sdl_keymap.h"
 #include <lua.hpp>
 #include <stdlib.h>                 /* exit() */
 #include <sys/types.h>
@@ -288,6 +289,10 @@ void Engine::run()
                 {
                     goto RET;
                 }
+                key_event(event.key.keysym.sym, true);
+                break;
+            case SDL_KEYUP:
+                key_event(event.key.keysym.sym, false);
                 break;
             case SDL_QUIT:
                 goto RET;
@@ -311,7 +316,7 @@ void Engine::update()
         doPhysics();
     if (m_autoStartFrame)
         startFrame();
-    lua_getfield(m_luaState, LUA_GLOBALSINDEX, "update");
+    lua_getfield(m_luaState, LUA_GLOBALSINDEX, "update_event");
     if (lua_type(m_luaState, -1) == LUA_TFUNCTION)
     {
         /* call the update function - pops the function ref from the stack */
@@ -329,6 +334,24 @@ void Engine::update()
     m_drawing = false;
 }
 
+void Engine::key_event(int keysym, bool pressed)
+{
+    lua_getfield(m_luaState, LUA_GLOBALSINDEX,
+            pressed ? "key_pressed_event" : "key_released_event");
+    if (lua_type(m_luaState, -1) == LUA_TFUNCTION)
+    {
+        lua_pushstring(m_luaState, sdl_keymap[keysym]);
+        /* call the key_event function
+         * This pops the function ref and arguments from the stack */
+        int s = lua_pcall(m_luaState, 1, LUA_MULTRET, 0);
+        reportErrors(s);
+    }
+    else
+    {
+        lua_pop(m_luaState, 1);
+    }
+}
+
 void Engine::doPhysics()
 {
     static Uint32 last_updated = 0;
diff --git a/Engine.h b/Engine.h
index eac0940..653b703 100644
--- a/Engine.h
+++ b/Engine.h
@@ -96,6 +96,7 @@ class Engine
         void registerLibraries();
         bool fileExists(const std::string & path);
         void update();
+        void key_event(int keysym, bool pressed);
         Object * createObject(bool is_static, GLuint display_list,
                 float scale = 1.0f)
         {
diff --git a/anaglym.cc b/anaglym.cc
index f680b95..f6b73b9 100644
--- a/anaglym.cc
+++ b/anaglym.cc
@@ -47,7 +47,7 @@ int main(int argc, char * argv[])
     }
 
     Video video;
-#if 1
+#if 0
     /* start in windowed mode for debugging */
     video.start(0, 0, false, false);
 #else
diff --git a/tests/ballstairs.lua b/tests/ballstairs.lua
index 87d56a4..7afb271 100755
--- a/tests/ballstairs.lua
+++ b/tests/ballstairs.lua
@@ -1,9 +1,15 @@
 
-function update()
+function update_event()
     ballx, bally, ballz = ball:getPosition()
     ag.setCamera(7, -6, 15, ballx, bally, ballz, 0, 0, 1)
 end
 
+function key_pressed_event(key)
+    if (key == "d") then
+        ball2:destroy()
+    end
+end
+
 arena = ag.loadStaticModel("boxarena")
 ball = ag.loadModel("checkerball")
 ball:setPosition(-7, 7.4, 12)