From 08fc46066850d95e980097657f0ae988ddbfedee Mon Sep 17 00:00:00 2001
From: Sam Hocevar <sam@hocevar.net>
Date: Sun, 29 Apr 2012 16:43:49 +0000
Subject: [PATCH] core: move the Camera class from Orbital to the engine core.

---
 src/Makefile.am               |  2 +-
 src/camera.cpp                | 70 +++++++++++++++++++++++++++++++++++
 src/camera.h                  | 49 ++++++++++++++++++++++++
 src/core.h                    |  1 +
 win32/lolcore.vcxproj         |  4 +-
 win32/lolcore.vcxproj.filters |  8 +++-
 win32/orbital.vcxproj         |  3 +-
 win32/orbital.vcxproj.filters |  3 +-
 8 files changed, 133 insertions(+), 7 deletions(-)
 create mode 100644 src/camera.cpp
 create mode 100644 src/camera.h

diff --git a/src/Makefile.am b/src/Makefile.am
index 1537c453..905158d2 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -10,7 +10,7 @@ liblol_a_SOURCES = \
     world.cpp world.h sample.cpp sample.h sampler.cpp sampler.h \
     text.cpp text.h emitter.cpp emitter.h numeric.h hash.cpp hash.h \
     worldentity.cpp worldentity.h gradient.cpp gradient.h \
-    platform.cpp platform.h sprite.cpp sprite.h \
+    platform.cpp platform.h sprite.cpp sprite.h camera.cpp camera.h \
     \
     lol/unit.h lol/debug.h \
     lol/math/vector.h lol/math/half.h lol/math/real.h lol/math/remez.h \
diff --git a/src/camera.cpp b/src/camera.cpp
new file mode 100644
index 00000000..3cf706da
--- /dev/null
+++ b/src/camera.cpp
@@ -0,0 +1,70 @@
+//
+// Lol Engine
+//
+// Copyright: (c) 2010-2012 Sam Hocevar <sam@hocevar.net>
+//   This program is free software; you can redistribute it and/or
+//   modify it under the terms of the Do What The Fuck You Want To
+//   Public License, Version 2, as published by Sam Hocevar. See
+//   http://sam.zoy.org/projects/COPYING.WTFPL for more details.
+//
+
+#if defined HAVE_CONFIG_H
+#   include "config.h"
+#endif
+
+#include <cstring>
+#include <cstdlib>
+
+#include "core.h"
+
+#if defined _WIN32 || defined _XBOX
+#   define strcasecmp _stricmp
+#endif
+
+namespace lol
+{
+
+Camera::Camera(vec3 const &position, vec3 const &target, vec3 const &up)
+  : m_target(target),
+    m_up(up)
+{
+    m_gamegroup = GAMEGROUP_BEFORE;
+
+    SetPosition(position);
+}
+
+Camera::~Camera()
+{
+}
+
+void Camera::SetPosition(vec3 const &pos)
+{
+    m_position = pos;
+}
+
+mat4 const &Camera::GetViewMatrix()
+{
+    return m_view_matrix;
+}
+
+mat4 const &Camera::GetProjMatrix()
+{
+    return m_proj_matrix;
+}
+
+void Camera::TickGame(float deltams)
+{
+    WorldEntity::TickGame(deltams);
+
+    m_view_matrix = mat4::lookat(m_position, m_target, m_up);
+    m_proj_matrix = mat4::perspective(45.0f, 640.0f, 480.0f, 1.f, 1000.0f);
+    //m_proj_matrix = mat4::ortho(-160, 160, -120, 120, .1f, 2000.0f);
+}
+
+void Camera::TickDraw(float deltams)
+{
+    WorldEntity::TickDraw(deltams);
+}
+
+} /* namespace lol */
+
diff --git a/src/camera.h b/src/camera.h
new file mode 100644
index 00000000..b9483af8
--- /dev/null
+++ b/src/camera.h
@@ -0,0 +1,49 @@
+//
+// Lol Engine
+//
+// Copyright: (c) 2010-2011 Sam Hocevar <sam@hocevar.net>
+//   This program is free software; you can redistribute it and/or
+//   modify it under the terms of the Do What The Fuck You Want To
+//   Public License, Version 2, as published by Sam Hocevar. See
+//   http://sam.zoy.org/projects/COPYING.WTFPL for more details.
+//
+
+//
+// The Camera class
+// ----------------
+//
+
+#if !defined __CAMERA_H__
+#define __CAMERA_H__
+
+#include "worldentity.h"
+
+namespace lol
+{
+
+class Camera : public WorldEntity
+{
+public:
+    Camera(vec3 const &position, vec3 const &target, vec3 const &up);
+    ~Camera();
+
+    char const *GetName() { return "<camera>"; }
+
+    void SetPosition(vec3 const &pos);
+
+    mat4 const &GetViewMatrix();
+    mat4 const &GetProjMatrix();
+
+protected:
+    virtual void TickGame(float deltams);
+    virtual void TickDraw(float deltams);
+
+private:
+    mat4 m_view_matrix, m_proj_matrix;
+    vec3 m_target, m_up;
+};
+
+} /* namespace lol */
+
+#endif /* __CAMERA_H__ */
+
diff --git a/src/core.h b/src/core.h
index 719f9b12..2789ba17 100644
--- a/src/core.h
+++ b/src/core.h
@@ -85,6 +85,7 @@ static inline int isnan(float f)
 #include "entity.h"
 #include "worldentity.h"
 
+#include "camera.h"
 #include "emitter.h"
 #include "font.h"
 #include "gradient.h"
diff --git a/win32/lolcore.vcxproj b/win32/lolcore.vcxproj
index 8c38d6ec..a0029279 100644
--- a/win32/lolcore.vcxproj
+++ b/win32/lolcore.vcxproj
@@ -74,6 +74,7 @@
   <ItemGroup>
     <ClCompile Include="..\src\application\application.cpp" />
     <ClCompile Include="..\src\audio.cpp" />
+    <ClCompile Include="..\src\camera.cpp" />
     <ClCompile Include="..\src\debug\fps.cpp" />
     <ClCompile Include="..\src\debug\quad.cpp" />
     <ClCompile Include="..\src\debug\record.cpp" />
@@ -128,6 +129,7 @@
     <ClInclude Include="..\src\array.h" />
     <ClInclude Include="..\src\audio.h" />
     <ClInclude Include="..\src\bitfield.h" />
+    <ClInclude Include="..\src\camera.h" />
     <ClInclude Include="..\src\core.h" />
     <ClInclude Include="..\src\debug\fps.h" />
     <ClInclude Include="..\src\debug\quad.h" />
@@ -185,4 +187,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/win32/lolcore.vcxproj.filters b/win32/lolcore.vcxproj.filters
index fd73beee..9a62fa89 100644
--- a/win32/lolcore.vcxproj.filters
+++ b/win32/lolcore.vcxproj.filters
@@ -70,6 +70,9 @@
     <ClCompile Include="..\src\audio.cpp">
       <Filter>src</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\camera.cpp">
+      <Filter>src</Filter>
+    </ClCompile>
     <ClCompile Include="..\src\dict.cpp">
       <Filter>src</Filter>
     </ClCompile>
@@ -225,6 +228,9 @@
     <ClInclude Include="..\src\bitfield.h">
       <Filter>src</Filter>
     </ClInclude>
+    <ClInclude Include="..\src\camera.h">
+      <Filter>src</Filter>
+    </ClInclude>
     <ClInclude Include="..\src\core.h">
       <Filter>src</Filter>
     </ClInclude>
@@ -365,4 +371,4 @@
       <Filter>src</Filter>
     </ClInclude>
   </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/win32/orbital.vcxproj b/win32/orbital.vcxproj
index 601673c7..f6662cf0 100644
--- a/win32/orbital.vcxproj
+++ b/win32/orbital.vcxproj
@@ -27,7 +27,6 @@
     </ProjectConfiguration>
   </ItemGroup>
   <ItemGroup>
-    <ClInclude Include="..\orbital\camera.h" />
     <ClInclude Include="..\orbital\mesh.h" />
     <ClInclude Include="..\orbital\orbital.h" />
     <ClInclude Include="..\orbital\particlesystem.h" />
@@ -58,4 +57,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/win32/orbital.vcxproj.filters b/win32/orbital.vcxproj.filters
index 9e8b8f7d..ed3dae58 100644
--- a/win32/orbital.vcxproj.filters
+++ b/win32/orbital.vcxproj.filters
@@ -2,7 +2,6 @@
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
     <ClInclude Include="..\orbital\mesh.h" />
-    <ClInclude Include="..\orbital\camera.h" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\orbital\orbital.h" />
@@ -13,4 +12,4 @@
   <ItemGroup>
     <ClCompile Include="..\orbital\orbital.cpp" />
   </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>