Subversion Repositories Games.Chess Giants

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

typedef struct vector_s

   float x; // X component

   float y; // Y component

   float z; // Z component

} vector_t;

 

 

typedef struct texcoord_s

   float u; // X coordinate of the texture point this vertex corresponds to

   float v; // Y coordinate of the texture point this vertex corresponds to

} texcoord_t;

 

 

typedef struct vertex_s

   vector_t position; // position in space

   vector_t normal; // coordinates of the unary normal vector of the plane this vertex is on (for illumination)

   texcoord_t texcoord; // coordinates of the texture point this vertex corresponds to

} vertex_t;

 

 

 

typedef struct reflectedobject_s

   sceneobject_t *object; // pointer to the scene object

   float distance; // distance to viewer camera

} reflectedobject_t;

 

 

typedef struct material_s

   wchar_t name[32]; // material name

   float ambient; // ambient reflection value ranging from 0 to 1

   float diffuse; // diffuse reflection value ranging from 0 to 1

   float emissive; // emissive reflection value ranging from 0 to 1

   float specular; // specular reflection value ranging from 0 to 1

   float shininess; // shininess (specular factor)

   float transparency; // transparency value ranging from 0 (fully transparent) to 1 (opaque)

} material_t;

 

 

typedef struct mesh_s

   unsigned long hash; // basic content hash, to avoid duplicates

   unsigned long vertex_format;

   IDirect3DVertexBuffer9 *d3dvertices; // handled opaquely by Direct3D

   int vertice_size;

   int vertice_count;

   bool is_indexed; // set to TRUE if this mesh has an index buffer

   IDirect3DIndexBuffer9 *d3dindices; // handled opaquely by Direct3D

   int indice_size;

   int indice_count;

} mesh_t;

 

 

typedef struct texture_s

   unsigned long hash; // basic content hash, to avoid duplicates

   int width;

   int height;

   IDirect3DTexture9 *texture;

} texture_t;

 

 

typedef struct font_s

   unsigned long pathname_hash;

   ID3DXFont *font;

} font_t;

 

 

typedef struct sprite_s

   unsigned long hash; // basic content hash, to avoid duplicates

   ID3DXSprite *sprite;

   int texture_index;

} sprite_t;

 

 

static IDirect3D9 *d3d = NULL; // our Direct3D interface

static IDirect3DDevice9 *d3ddev = NULL; // the device class

 

static material_t *materials = NULL;

static int material_count = 0;

static texture_t *textures = NULL;

static int texture_count = 0;

static mesh_t *meshes = NULL;

static int mesh_count = 0;

static font_t *fonts = NULL;

static int font_count = 0;

static sprite_t *sprites = NULL;

static int sprite_count = 0;

static const float fov_value = 45.0f; // field of view width, in degrees

static const float viewdist_near = 1.0f; // nearest view plane distance

static const float viewdist_far = 200.0f; // farthest view plane distance

static int initial_width = 0; // initial width of the render surface, in pixels

static int initial_height = 0; // initial height of the render surface, in pixels

static float current_width = 0.0f; // current width of the client area on which the render surface is rendered, in pixels

static float current_height = 0.0f; // current height of the client area on which the render surface is rendered, in pixels

static D3DCOLOR ambient_light;

static vector_t camera_position;

static const vector_t scene_center = { 0.0f, 0.0f, 0.0f };

static const vector_t upwards_direction = { 0.0f, 0.0f, 1.0f };

static int best_supported_filter;

static bool is_fsaa_supported = false;

 

static wchar_t printf_buffer[0xffff];

 

 

static bool Render_LoadMesh_X (mesh_t *mesh, const wchar_t *xfile_pathname);

static bool Render_LoadMesh_Obj (mesh_t *mesh, const wchar_t *objfile_pathname);

static void Render_DrawSceneObjectReflection (sceneobject_t *sceneobject);

static void Render_DrawSceneObject (sceneobject_t *sceneobject);

static void Render_DrawSceneTile (sceneobject_t *sceneobject);

static void Render_DrawSprite (sprite_t *sprite, float x_percent, float y_percent, float width_percent, float height_percent, int alpha);

static void Render_GetTextBoundaries (int max_width, int font_id, wchar_t *text, RECT *rect);

static void Render_wprintf (int x, int y, int max_width, int horiz_align, int vert_align, int text_align, int font_id, unsigned long color_rgba, RECT *out_rect, const wchar_t *fmt, ...);

static float DistanceToCamera (float x, float y, float z);

static float FadeFloat (float from, float to, float start_time, float end_time);

static unsigned long HashString (const wchar_t *string_buffer);

static unsigned long HashFile (const wchar_t *file_pathname);

static void ResolveWildcard (wchar_t *file_pathname, wchar_t *extensions_separated_by_bars);

static int SortReflectedObjects (const void *object1, const void *object2);

 

 

bool Render_Init (void)

   // this function sets up and initializes Direct3D

 

   static wchar_t *default_materialname = L"default";

 

   D3DCAPS9 device_capabilities;

   unsigned long behaviour_flags;

   unsigned long multisample_quality_count;

   D3DPRESENT_PARAMETERS d3dpp;

   wchar_t errorfile_path[MAX_PATH];

   wchar_t line_buffer[256];

   material_t material;

   HRESULT ret;

   RECT rect;

   FILE *fp;

 

   // create the Direct3D interface

   d3d = Direct3DCreate9 (D3D_SDK_VERSION);

 

   // get hardware capabilities

   if (FAILED (d3d->GetDeviceCaps (D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, &device_capabilities)))

   {

      MessageBox (NULL, LOCALIZE (L"Error_CouldNotCreateD3DDevGetDeviceCapsFailed"), LOCALIZE (L"FatalError"), MB_ICONERROR | MB_OK);

      return (false);

   }

 

   // grab info from that and adjust our D3D settings

   best_supported_filter = (device_capabilities.RasterCaps & D3DPRASTERCAPS_ANISOTROPY ? D3DTEXF_ANISOTROPIC : D3DTEXF_LINEAR);

   behaviour_flags = (device_capabilities.VertexProcessingCaps != 0 ? D3DCREATE_HARDWARE_VERTEXPROCESSING : D3DCREATE_SOFTWARE_VERTEXPROCESSING);

 

   // see if simple (non-maskable) full-scene antialiasing is supported and in how many quality flavors

   if (SUCCEEDED (d3d->CheckDeviceMultiSampleType (D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, D3DFMT_X8R8G8B8, false, D3DMULTISAMPLE_NONMASKABLE, &multisample_quality_count)))

      is_fsaa_supported = true; // remember FSAA is supported

 

   memset (&d3dpp, 0, sizeof (d3dpp)); // clear out the struct for use

   d3dpp.Windowed = true; // always windowed (because we can't display dialog boxes in fullscreen mode)

   d3dpp.BackBufferCount = 1;

   d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; // discard old frames

   d3dpp.hDeviceWindow = hMainWnd; // set the window to be used by Direct3D

   d3dpp.EnableAutoDepthStencil = true; // enable Z-buffer and stencil buffer

   d3dpp.AutoDepthStencilFormat = D3DFMT_D24S8; // D3DFMT_D15S1 15 bits should be enough to store each pixel's Z depth

   if (is_fsaa_supported)

   {

      d3dpp.MultiSampleType = D3DMULTISAMPLE_NONMASKABLE; // use multisampling (full scene antialiasing) if supported

      d3dpp.MultiSampleQuality = multisample_quality_count - 1; // use the best available multisample quality

   }

   else

   {

      d3dpp.MultiSampleType = D3DMULTISAMPLE_NONE; // do not use multisampling (full scene antialiasing)

      d3dpp.MultiSampleQuality = 0;

   }

 

   // create a device class using this information and the info from the d3dpp stuct

   if (FAILED (ret = d3d->CreateDevice (D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hMainWnd, behaviour_flags, &d3dpp, &d3ddev)))

   {

      MessageBox (NULL, LOCALIZE (L"Error_CouldNotCreateD3DDevCreateDeviceFailed"), LOCALIZE (L"FatalError"), MB_ICONERROR | MB_OK);

 

      // on error, write a log file on the user's desktop

      errorfile_path[0] = 0;

      SHGetSpecialFolderPath (NULL, errorfile_path, CSIDL_DESKTOP, true);

      wcscat_s (errorfile_path, WCHAR_SIZEOF (errorfile_path), L"\\Chess Giants error.log");

      _wfopen_s (&fp, errorfile_path, L"w, ccs=UNICODE");

      if (fp != NULL)

      {

         fwprintf (fp, L"device_capabilities.DeviceType = %d\n", device_capabilities.DeviceType);

         fwprintf (fp, L"device_capabilities.AdapterOrdinal = %ul\n", device_capabilities.AdapterOrdinal);

         fwprintf (fp, L"device_capabilities.Caps = %ul\n", device_capabilities.Caps);

         fwprintf (fp, L"device_capabilities.Caps2 = %ul\n", device_capabilities.Caps2);

         fwprintf (fp, L"device_capabilities.Caps3 = %ul\n", device_capabilities.Caps3);

         fwprintf (fp, L"device_capabilities.PresentationIntervals = %ul\n", device_capabilities.PresentationIntervals);

         fwprintf (fp, L"device_capabilities.CursorCaps = %ul\n", device_capabilities.CursorCaps);

         fwprintf (fp, L"device_capabilities.DevCaps = %ul\n", device_capabilities.DevCaps);

         fwprintf (fp, L"device_capabilities.PrimitiveMiscCaps = %ul\n", device_capabilities.PrimitiveMiscCaps);

         fwprintf (fp, L"device_capabilities.RasterCaps = %ul\n", device_capabilities.RasterCaps);

         fwprintf (fp, L"device_capabilities.ZCmpCaps = %ul\n", device_capabilities.ZCmpCaps);

         fwprintf (fp, L"device_capabilities.SrcBlendCaps = %ul\n", device_capabilities.SrcBlendCaps);

         fwprintf (fp, L"device_capabilities.DestBlendCaps = %ul\n", device_capabilities.DestBlendCaps);

         fwprintf (fp, L"device_capabilities.AlphaCmpCaps = %ul\n", device_capabilities.AlphaCmpCaps);

         fwprintf (fp, L"device_capabilities.ShadeCaps = %ul\n", device_capabilities.ShadeCaps);

         fwprintf (fp, L"device_capabilities.TextureCaps = %ul\n", device_capabilities.TextureCaps);

         fwprintf (fp, L"device_capabilities.TextureFilterCaps = %ul\n", device_capabilities.TextureFilterCaps);

         fwprintf (fp, L"device_capabilities.CubeTextureFilterCaps = %ul\n", device_capabilities.CubeTextureFilterCaps);

         fwprintf (fp, L"device_capabilities.VolumeTextureFilterCaps = %ul\n", device_capabilities.VolumeTextureFilterCaps);

         fwprintf (fp, L"device_capabilities.TextureAddressCaps = %ul\n", device_capabilities.TextureAddressCaps);

         fwprintf (fp, L"device_capabilities.VolumeTextureAddressCaps = %ul\n", device_capabilities.VolumeTextureAddressCaps);

         fwprintf (fp, L"device_capabilities.LineCaps = %ul\n", device_capabilities.LineCaps);

         fwprintf (fp, L"device_capabilities.MaxTextureWidth = %ul\n", device_capabilities.MaxTextureWidth);

         fwprintf (fp, L"device_capabilities.MaxTextureHeight = %ul\n", device_capabilities.MaxTextureHeight);

         fwprintf (fp, L"device_capabilities.MaxVolumeExtent = %ul\n", device_capabilities.MaxVolumeExtent);

         fwprintf (fp, L"device_capabilities.MaxTextureRepeat = %ul\n", device_capabilities.MaxTextureRepeat);

         fwprintf (fp, L"device_capabilities.MaxTextureAspectRatio = %ul\n", device_capabilities.MaxTextureAspectRatio);

         fwprintf (fp, L"device_capabilities.MaxAnisotropy = %ul\n", device_capabilities.MaxAnisotropy);

         fwprintf (fp, L"device_capabilities.MaxVertexW = %f\n", device_capabilities.MaxVertexW);

         fwprintf (fp, L"device_capabilities.GuardBandLeft = %f\n", device_capabilities.GuardBandLeft);

         fwprintf (fp, L"device_capabilities.GuardBandTop = %f\n", device_capabilities.GuardBandTop);

         fwprintf (fp, L"device_capabilities.GuardBandRight = %f\n", device_capabilities.GuardBandRight);

         fwprintf (fp, L"device_capabilities.GuardBandBottom = %f\n", device_capabilities.GuardBandBottom);

         fwprintf (fp, L"device_capabilities.ExtentsAdjust = %f\n", device_capabilities.ExtentsAdjust);

         fwprintf (fp, L"device_capabilities.StencilCaps = %ul\n", device_capabilities.StencilCaps);

         fwprintf (fp, L"device_capabilities.FVFCaps = %ul\n", device_capabilities.FVFCaps);

         fwprintf (fp, L"device_capabilities.TextureOpCaps = %ul\n", device_capabilities.TextureOpCaps);

         fwprintf (fp, L"device_capabilities.MaxTextureBlendStages = %ul\n", device_capabilities.MaxTextureBlendStages);

         fwprintf (fp, L"device_capabilities.MaxSimultaneousTextures = %ul\n", device_capabilities.MaxSimultaneousTextures);

         fwprintf (fp, L"device_capabilities.VertexProcessingCaps = %ul\n", device_capabilities.VertexProcessingCaps);

         fwprintf (fp, L"device_capabilities.MaxActiveLights = %ul\n", device_capabilities.MaxActiveLights);

         fwprintf (fp, L"device_capabilities.MaxUserClipPlanes = %ul\n", device_capabilities.MaxUserClipPlanes);

         fwprintf (fp, L"device_capabilities.MaxVertexBlendMatrices = %ul\n", device_capabilities.MaxVertexBlendMatrices);

         fwprintf (fp, L"device_capabilities.MaxVertexBlendMatrixIndex = %ul\n", device_capabilities.MaxVertexBlendMatrixIndex);

         fwprintf (fp, L"device_capabilities.MaxPointSize = %f\n", device_capabilities.MaxPointSize);

         fwprintf (fp, L"device_capabilities.MaxPrimitiveCount = %ul\n", device_capabilities.MaxPrimitiveCount);

         fwprintf (fp, L"device_capabilities.MaxVertexIndex = %ul\n", device_capabilities.MaxVertexIndex);

         fwprintf (fp, L"device_capabilities.MaxStreams = %ul\n", device_capabilities.MaxStreams);

         fwprintf (fp, L"device_capabilities.MaxStreamStride = %ul\n", device_capabilities.MaxStreamStride);

         fwprintf (fp, L"device_capabilities.VertexShaderVersion = %ul\n", device_capabilities.VertexShaderVersion);

         fwprintf (fp, L"device_capabilities.MaxVertexShaderConst = %ul\n", device_capabilities.MaxVertexShaderConst);

         fwprintf (fp, L"device_capabilities.PixelShaderVersion = %ul\n", device_capabilities.PixelShaderVersion);

         fwprintf (fp, L"device_capabilities.PixelShader1xMaxValue = %f\n", device_capabilities.PixelShader1xMaxValue);

         fwprintf (fp, L"device_capabilities.DevCaps2 = %ul\n", device_capabilities.DevCaps2);

         fwprintf (fp, L"device_capabilities.MaxNpatchTessellationLevel = %f\n", device_capabilities.MaxNpatchTessellationLevel);

         fwprintf (fp, L"device_capabilities.Reserved5 = %ul\n", device_capabilities.Reserved5);

         fwprintf (fp, L"device_capabilities.MasterAdapterOrdinal = %ul\n", device_capabilities.MasterAdapterOrdinal);

         fwprintf (fp, L"device_capabilities.AdapterOrdinalInGroup = %ul\n", device_capabilities.AdapterOrdinalInGroup);

         fwprintf (fp, L"device_capabilities.NumberOfAdaptersInGroup = %ul\n", device_capabilities.NumberOfAdaptersInGroup);

         fwprintf (fp, L"device_capabilities.DeclTypes = %ul\n", device_capabilities.DeclTypes);

         fwprintf (fp, L"device_capabilities.NumSimultaneousRTs = %ul\n", device_capabilities.NumSimultaneousRTs);

         fwprintf (fp, L"device_capabilities.StretchRectFilterCaps = %ul\n", device_capabilities.StretchRectFilterCaps);

         fwprintf (fp, L"device_capabilities.VS20Caps.Caps = %ul\n", device_capabilities.VS20Caps.Caps);

         fwprintf (fp, L"device_capabilities.VS20Caps.DynamicFlowControlDepth = %d\n", device_capabilities.VS20Caps.DynamicFlowControlDepth);

         fwprintf (fp, L"device_capabilities.VS20Caps.NumTemps = %d\n", device_capabilities.VS20Caps.NumTemps);

         fwprintf (fp, L"device_capabilities.VS20Caps.StaticFlowControlDepth = %d\n", device_capabilities.VS20Caps.StaticFlowControlDepth);

         fwprintf (fp, L"device_capabilities.PS20Caps.Caps = %ul\n", device_capabilities.PS20Caps.Caps);

         fwprintf (fp, L"device_capabilities.PS20Caps.DynamicFlowControlDepth = %d\n", device_capabilities.PS20Caps.DynamicFlowControlDepth);

         fwprintf (fp, L"device_capabilities.PS20Caps.NumTemps = %d\n", device_capabilities.PS20Caps.NumTemps);

         fwprintf (fp, L"device_capabilities.PS20Caps.StaticFlowControlDepth = %d\n", device_capabilities.PS20Caps.StaticFlowControlDepth);

         fwprintf (fp, L"device_capabilities.PS20Caps.NumInstructionSlots = %d\n", device_capabilities.PS20Caps.NumInstructionSlots);

         fwprintf (fp, L"device_capabilities.VertexTextureFilterCaps = %ul\n", device_capabilities.VertexTextureFilterCaps);

         fwprintf (fp, L"device_capabilities.MaxVShaderInstructionsExecuted = %ul\n", device_capabilities.MaxVShaderInstructionsExecuted);

         fwprintf (fp, L"device_capabilities.MaxPShaderInstructionsExecuted = %ul\n", device_capabilities.MaxPShaderInstructionsExecuted);

         fwprintf (fp, L"device_capabilities.MaxVertexShader30InstructionSlots = %ul\n", device_capabilities.MaxVertexShader30InstructionSlots);

         fwprintf (fp, L"device_capabilities.MaxPixelShader30InstructionSlots = %ul\n", device_capabilities.MaxPixelShader30InstructionSlots);

         fwprintf (fp, L"========\n");

         fwprintf (fp, L"(guessed) behaviour_flags = %ul\n", behaviour_flags);

         fwprintf (fp, L"========\n");

         fwprintf (fp, L"d3dpp.MultiSampleType = %d\n", d3dpp.MultiSampleType);

         fwprintf (fp, L"d3dpp.MultiSampleQuality = %d\n", d3dpp.MultiSampleQuality);

         fwprintf (fp, L"========\n");

         fwprintf (fp, L"d3d->CreateDevice() returned %d\n", (int) ret);

         fclose (fp);

 

         MessageBox (NULL, LOCALIZE (L"Error_GameCouldNotStartPleaseSendLogToAuthor"), LOCALIZE (L"Information"), MB_ICONINFORMATION | MB_OK);

      }

      else

         MessageBox (NULL, LOCALIZE (L"Error_CouldNotWriteToLogFile"), LOCALIZE (L"FatalError"), MB_ICONERROR | MB_OK);

 

      return (false);

   }

 

   // get the device view port and save the initial width and height

   GetClientRect (hMainWnd, &rect);

   initial_width = rect.right; // they may differ from window width and window height

   initial_height = rect.bottom; // because of title bars, menus, borders, etc.

 

   // set the texture parameters

   d3ddev->SetSamplerState (0, D3DSAMP_ADDRESSU, D3DTADDRESS_WRAP); // wrap textures around their edges

   d3ddev->SetSamplerState (0, D3DSAMP_ADDRESSV, D3DTADDRESS_WRAP);

   d3ddev->SetTextureStageState (0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE); // and modulate their alpha with the material's alpha

   d3ddev->SetTextureStageState (0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE);

   d3ddev->SetTextureStageState (0, D3DTSS_ALPHAOP, D3DTOP_MODULATE);

 

   // enable the Z buffer

   d3ddev->SetRenderState (D3DRS_ZENABLE, true);

 

   // disable the stencil buffer

   d3ddev->SetRenderState (D3DRS_STENCILENABLE, false);

 

   // normalize the face normals (if we don't, scaling will cause problems with lighting computations)

   d3ddev->SetRenderState (D3DRS_NORMALIZENORMALS, true);

 

   // turn on alpha blending

   d3ddev->SetRenderState (D3DRS_ALPHABLENDENABLE, true);

   d3ddev->SetRenderState (D3DRS_BLENDOP, D3DBLENDOP_ADD);

   d3ddev->SetRenderState (D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);

   d3ddev->SetRenderState (D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA);

 

   // use all of the materials' light reflection properties

   d3ddev->SetRenderState (D3DRS_AMBIENTMATERIALSOURCE, D3DMCS_MATERIAL);

   d3ddev->SetRenderState (D3DRS_DIFFUSEMATERIALSOURCE, D3DMCS_MATERIAL);

   d3ddev->SetRenderState (D3DRS_SPECULARMATERIALSOURCE, D3DMCS_MATERIAL);

   d3ddev->SetRenderState (D3DRS_EMISSIVEMATERIALSOURCE, D3DMCS_MATERIAL);

   d3ddev->SetRenderState (D3DRS_COLORVERTEX, false);

 

   // enable 3D lighting

   d3ddev->SetRenderState (D3DRS_LIGHTING, true);

 

   // open and parse the materials file and build the materials list

   materials = NULL;

   material_count = 0;

   _wfopen_s (&fp, L"materials.cfg", L"r, ccs=UNICODE");

   if (fp != NULL)

   {

      // read line per line...

      while (fgetws (line_buffer, WCHAR_SIZEOF (line_buffer), fp) != NULL)

      {

         // can we read a complete material line ?

         if (swscanf_s (line_buffer, L"\"%[^\"]\" %f %f %f %f %f %f", material.name, WCHAR_SIZEOF (material.name), &material.ambient, &material.diffuse, &material.emissive, &material.specular, &material.shininess, &material.transparency) == 7)

         {

            materials = (material_t *) SAFE_realloc (materials, material_count, material_count + 1, sizeof (material_t), false);

            memcpy (&materials[material_count], &material, sizeof (material_t));

            material_count++; // if so, append this new material to the materials array

         }

      }

      fclose (fp); // finished, close the file

   }

   materials = (material_t *) SAFE_realloc (materials, material_count, material_count + 1, sizeof (material_t), false);

   wcscpy_s (materials[material_count].name, WCHAR_SIZEOF (materials[material_count].name), default_materialname);

   materials[material_count].ambient = 1.0f;

   materials[material_count].diffuse = 1.0f;

   materials[material_count].emissive = 0.0f;

   materials[material_count].specular = 0.0f;

   materials[material_count].shininess = 0.0f;

   materials[material_count].transparency = 1.0f;

   material_count++; // append a default material at the end of the array and we're all set

 

   return (true); // finished

 

 

void Render_Shutdown (void)

   // this function shuts down the Direct3D interfaces and releases the Direct3D COM objects

 

   int array_index;

 

   // close and release font data

   SAFE_free ((void **) &fonts);

   font_count = 0;

 

   // close and release sprite data

   SAFE_free ((void **) &sprites);

   sprite_count = 0;

 

   // close and release meshes data

   if (meshes != NULL)

   {

      for (array_index = 0; array_index < mesh_count; array_index++)

      {

         if (meshes[array_index].d3dindices != NULL)

            meshes[array_index].d3dindices->Release ();

         meshes[array_index].d3dindices = NULL;

 

         if (meshes[array_index].d3dvertices != NULL)

            meshes[array_index].d3dvertices->Release ();

         meshes[array_index].d3dvertices = NULL;

      }

   }

   meshes = NULL;

   mesh_count = 0;

 

   // close and release texture data

   if (textures != NULL)

   {

      for (array_index = 0; array_index < texture_count; array_index++)

         if (textures[array_index].texture != NULL)

            textures[array_index].texture->Release ();

      SAFE_free ((void **) &textures);

   }

   texture_count = 0;

 

   // close and release materials data

   SAFE_free ((void **) &materials);

   material_count = 0;

 

   // close and release the 3D device

   if (d3ddev != NULL)

      d3ddev->Release ();

   d3ddev = NULL;

 

   // close and release Direct3D

   if (d3d != NULL)

      d3d->Release ();

   d3d = NULL;

 

   return; // finished

 

 

void Render_RenderFrame (scene_t *scene)

   // this is the function used to render a single frame

 

   static int framerate_value = 0;

   static int framerate_count = 0;

   static float framerate_time = 0;

 

   D3DXMATRIX scaling_matrix;

   D3DXMATRIX translation_matrix;

   D3DXMATRIX view_matrix; // the view transform matrix

   D3DXMATRIX projection_matrix; // the projection transform matrix

   D3DLIGHT9 dxlight;

   RECT rect;

   float angle;

   float sin_pitch;

   float sin_yaw;

   float cos_pitch;

   float cos_yaw;

   int light_index;

   int object_index;

   int cchistory_index;

   int cchistory_index2;

   int combined_width;

   int combined_height;

   light_t *light;

   ccreply_t *ccreply;

   sceneobject_t *sceneobject;

   reflectedobject_t *reflectedobjects; // mallocated

   int reflectedobject_count;

   reflectedobject_t *otherobjects; // mallocated

   int otherobject_count;

 

   // get the device view port and save the actual width and height

   GetClientRect (hMainWnd, &rect);

   current_width = (float) rect.right; // they may differ from window width and window height

   current_height = (float) rect.bottom; // because of title bars, menus, borders, etc.

 

   // clear the back buffer, the Z buffer and the stencil buffer

   d3ddev->Clear (0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER | D3DCLEAR_STENCIL, D3DCOLOR_XRGB (0, 0, 0), 1.0f, 0);

   d3ddev->BeginScene (); // begins the 3D scene

 

   ////////////////////////////////////////

   // Setup scene lights

 

   // There are three types of light : ambient, diffuse and specular.

   // Diffuse lights can be of type directional (sun), point (bulb) or spot (flashlight).

 

   // The attenuation formula for point lights is :

   // Atten = 1 / (att0 + (att1 * d) + (att2 * d²))

 

   // In spot lights, Phi is the outer cone angle. Theta is the inner cone angle.

 

   // set the default lighting color

   ambient_light = RGBACOLOR_TO_ARGBCOLOR (RGBACOLOR_FULLALPHA (theme->illum.ambient_light));

   d3ddev->SetRenderState (D3DRS_AMBIENT, ambient_light);

 

   // for each light...

   for (light_index = 0; light_index < theme->illum.light_count; light_index++)

   {

      light = &theme->illum.lights[light_index]; // quick access to light

 

      memset (&dxlight, 0, sizeof (dxlight)); // clear out the dxlight struct for use

 

      // set its type

      if (light->type == LIGHT_DIRECTIONAL)

         dxlight.Type = D3DLIGHT_DIRECTIONAL; // directional light (e.g, sun)

      else if (light->type == LIGHT_POINT)

         dxlight.Type = D3DLIGHT_POINT; // point light (e.g, light bulb)

      else if (light->type == LIGHT_SPOT)

         dxlight.Type = D3DLIGHT_SPOT; // spot light (e.g, flash light)

      else

      {

         d3ddev->LightEnable (light_index, false); // unknown light ; turn off light #index

         continue; // and proceed to the next one

      }

 

      // set its parameters

      dxlight.Diffuse = D3DXCOLOR (RGBACOLOR_TO_ARGBCOLOR (RGBACOLOR_FULLALPHA (light->color)));

      dxlight.Specular = D3DXCOLOR (0xffffffff);

      dxlight.Position.x = light->pos_x;

      dxlight.Position.y = light->pos_y;

      dxlight.Position.z = light->pos_z;

      dxlight.Direction.x = light->direction_x;

      dxlight.Direction.y = light->direction_y;

      dxlight.Direction.z = light->direction_z;

      dxlight.Range = light->range; // light won't be computed after this distance

      dxlight.Attenuation0 = light->attenuation_constant; // constant attenuation, see formula

      dxlight.Attenuation1 = light->attenuation_proportional; // proportional attenuation, see formula

      dxlight.Attenuation2 = light->attenuation_square; // square attenuation, see formula

      dxlight.Phi = light->cone_outer * TO_RADIANS; // outer spot cone

      dxlight.Theta = light->cone_inner * TO_RADIANS; // inner spot cone

 

      d3ddev->SetLight (light_index, &dxlight); // send the light struct properties to light #index

      d3ddev->LightEnable (light_index, true); // turn on light #index

   }

 

   ////////////////////////////////

   // View transform

 

   // compute the sine and cosine of the pitch component

   angle = current_pitch * TO_RADIANS;

   sin_pitch = sinf (angle);

   cos_pitch = cosf (angle);

 

   // compute the sine and cosine of the yaw component

   angle = current_yaw * TO_RADIANS;

   sin_yaw = sinf (angle);

   cos_yaw = cosf (angle);

 

   // build the camera position

   camera_position.x = (float) -(cos_pitch * cos_yaw) * current_distance;

   camera_position.y = (float) -(cos_pitch * sin_yaw) * current_distance;

   camera_position.z = (float) sin_pitch * current_distance;

 

   // set up a view matrix

   D3DXMatrixLookAtLH (&view_matrix,

                       (D3DXVECTOR3 *) &camera_position, // camera position

                       (D3DXVECTOR3 *) &scene_center, // look-at position

                       (D3DXVECTOR3 *) &upwards_direction); // up direction

 

   // tell Direct3D about our matrix

   d3ddev->SetTransform (D3DTS_VIEW, &view_matrix);

 

   /////////////////////////////////////

   // Projection transform

 

   // set up a projection matrix

   D3DXMatrixPerspectiveFovLH (&projection_matrix,

                               fov_value * TO_RADIANS, // field of view width

                               current_width / current_height, // aspect ratio

                               viewdist_near, viewdist_far); // view plane distances

 

   // tell Direct3D about our matrix

   d3ddev->SetTransform (D3DTS_PROJECTION, &projection_matrix);

 

   /////////////////////////////////////

   // End of the transforms

 

   // if we want it, enable specular lighting

   d3ddev->SetRenderState (D3DRS_SPECULARENABLE, options.want_specularlighting);

 

   // turn on texture filtering if needed

   if (options.want_filtering)

   {

      d3ddev->SetSamplerState (0, D3DSAMP_MINFILTER, best_supported_filter);

      d3ddev->SetSamplerState (0, D3DSAMP_MAGFILTER, best_supported_filter);

      d3ddev->SetSamplerState (0, D3DSAMP_MIPFILTER, D3DTEXF_LINEAR);

 

      // turn on fullscene antialiasing only if capable

      d3ddev->SetRenderState (D3DRS_MULTISAMPLEANTIALIAS, is_fsaa_supported);

   }

   else

   {

      d3ddev->SetSamplerState (0, D3DSAMP_MINFILTER, D3DTEXF_NONE);

      d3ddev->SetSamplerState (0, D3DSAMP_MAGFILTER, D3DTEXF_NONE);

      d3ddev->SetSamplerState (0, D3DSAMP_MIPFILTER, D3DTEXF_NONE);

 

      // turn off fullscene antialiasing

      d3ddev->SetRenderState (D3DRS_MULTISAMPLEANTIALIAS, false);

   }

 

   /////////////////////////////////////////////////////////////

   // draw the background elements. No need for a Z buffer here.

 

   d3ddev->SetRenderState (D3DRS_ZENABLE, false); // disable depth testing

 

   // draw the background sprite, if any

   if (scene->background_spriteindex >= 0)

      Render_DrawSprite (&sprites[scene->background_spriteindex], 0.0f, 0.0f, 100.0f, 100.0f, 0xFF);

 

   // draw the table border

   Render_DrawSceneObject (&scene->objects[0]);

   Render_DrawSceneObject (&scene->objects[1]);

 

   // draw the table and build the stencil buffer at the same time

   d3ddev->SetRenderState (D3DRS_STENCILENABLE, true); // enable the stencil buffer (i.e. the "frame" for drawing table reflections)

   d3ddev->SetRenderState (D3DRS_STENCILFUNC, D3DCMP_ALWAYS); // instruct how to fill it

   d3ddev->SetRenderState (D3DRS_STENCILPASS, D3DSTENCILOP_INCRSAT); // instruct how to fill it

   Render_DrawSceneObject (&scene->objects[2]); // draw the table squares in the stencil buffer

   d3ddev->SetRenderState (D3DRS_STENCILENABLE, false); // finished drawing the stencil buffer

 

   d3ddev->SetRenderState (D3DRS_ZENABLE, true); // re-enable depth testing

 

   ////////////////////////////////////////////////////////////

   // draw the scene objects and their reflections on the table

 

   // start with the reflections if we want them, and if the table does it

   if (options.want_reflections && (theme->reflection_alpha > 0))

   {

      // build an array of reflected objects with their distances

      reflectedobjects = NULL;

      reflectedobject_count = 0;

      otherobjects = NULL;

      otherobject_count = 0;

 

      // cycle through all parts and see which ones need to be reflected

      for (object_index = 3; object_index < scene->object_count; object_index++)

      {

         sceneobject = &scene->objects[object_index]; // quick access to scene object

 

         // is this object a mesh AND it's above the ground ?

         if ((sceneobject->mesh_index != -1) && (sceneobject->z > 0))

         {

            // yes it is. It thus needs to be reflected, so add it to the list

            reflectedobjects = (reflectedobject_t *) SAFE_realloc (reflectedobjects, reflectedobject_count, reflectedobject_count + 1, sizeof (reflectedobject_t), false);

            reflectedobjects[reflectedobject_count].object = sceneobject; // save scene object

            reflectedobjects[reflectedobject_count].distance = DistanceToCamera (sceneobject->x, sceneobject->y, sceneobject->z);

            reflectedobject_count++; // we have now one object more to reflect

         }

         else

         {

            // no it's not. It doesn't need to be reflected, so add it to the other list

            otherobjects = (reflectedobject_t *) SAFE_realloc (otherobjects, otherobject_count, otherobject_count + 1, sizeof (reflectedobject_t), false);

            otherobjects[otherobject_count].object = sceneobject; // save scene object

            otherobjects[otherobject_count].distance = 0;

            otherobject_count++; // we have now one object more to reflect

         }

      }

 

      // now sort them from farthest to closest and draw them in this order

      qsort (reflectedobjects, reflectedobject_count, sizeof (reflectedobject_t), SortReflectedObjects);

      for (object_index = 0; object_index < reflectedobject_count; object_index++)

         Render_DrawSceneObjectReflection (reflectedobjects[object_index].object); // draw the reflection

      for (object_index = 0; object_index < reflectedobject_count; object_index++)

         Render_DrawSceneObject (reflectedobjects[object_index].object); // and draw the objects afterwards

      for (object_index = 0; object_index < otherobject_count; object_index++)

         Render_DrawSceneObject (otherobjects[object_index].object); // finally, draw the non-reflected objects

 

      SAFE_free ((void **) &reflectedobjects); // and free the reflected objects array

      SAFE_free ((void **) &otherobjects); // and the non-reflected objects array

   }

   else

      for (object_index = 3; object_index < scene->object_count; object_index++)

         Render_DrawSceneObject (&scene->objects[object_index]); // else if no reflections, draw the objects, the Z-buffer will sort them

 

   // draw the overlay texture if required

   if (scene->overlay_spriteindex >= 0)

      Render_DrawSprite (&sprites[scene->overlay_spriteindex], 0.0f, 0.0f, 100.0f, 100.0f, 0x4F);

 

   ///////////////

   // draw the GUI

 

   // draw the arrows

   DRAW_BUTTON_IF_NEEDED (scene->gui.larrow); // left arrow

   DRAW_BUTTON_IF_NEEDED (scene->gui.rarrow); // right arrow

   DRAW_TEXT_IF_NEEDED (scene->gui.arrow_text); // arrow text

 

   if (want_framerate)

      Render_wprintf (initial_width - 10, 10, 62, ALIGN_RIGHT, ALIGN_TOP, ALIGN_CENTER, arrow_fontindex, D3DCOLOR_RGBA (255, 255, 255, 255), NULL,

                      L"%d textures\n"

                      L"%d meshes\n"

                      L"%d fonts\n"

                      L"%d sprites\n"

                      L"%d fps", texture_count, mesh_count, font_count, sprite_count, framerate_value);

 

   // draw the other GUI buttons

   DRAW_BUTTON_IF_NEEDED (scene->gui.chatbutton); // chat button

   DRAW_BUTTON_IF_NEEDED (scene->gui.gamesbutton); // games button

   DRAW_BUTTON_IF_NEEDED (scene->gui.peoplebutton); // people button

 

   // does the parts pick line need to be displayed ?

   if (scene->gui.is_partspick_displayed)

   {

 

      if (scene->gui.partspick_selectedpart == 'P')      Render_DrawSprite (&sprites[theme->lastmovetarget_spriteindex],  0.0f * PARTSIZE_PCT, 0.0f, PARTSIZE_PCT, 11.0f, 0xFF);

      else if (scene->gui.partspick_selectedpart == 'R') Render_DrawSprite (&sprites[theme->lastmovetarget_spriteindex],  1.0f * PARTSIZE_PCT, 0.0f, PARTSIZE_PCT, 11.0f, 0xFF);

      else if (scene->gui.partspick_selectedpart == 'N') Render_DrawSprite (&sprites[theme->lastmovetarget_spriteindex],  2.0f * PARTSIZE_PCT, 0.0f, PARTSIZE_PCT, 11.0f, 0xFF);

      else if (scene->gui.partspick_selectedpart == 'B') Render_DrawSprite (&sprites[theme->lastmovetarget_spriteindex],  3.0f * PARTSIZE_PCT, 0.0f, PARTSIZE_PCT, 11.0f, 0xFF);

      else if (scene->gui.partspick_selectedpart == 'Q') Render_DrawSprite (&sprites[theme->lastmovetarget_spriteindex],  4.0f * PARTSIZE_PCT, 0.0f, PARTSIZE_PCT, 11.0f, 0xFF);

      else if (scene->gui.partspick_selectedpart == 'K') Render_DrawSprite (&sprites[theme->lastmovetarget_spriteindex],  5.0f * PARTSIZE_PCT, 0.0f, PARTSIZE_PCT, 11.0f, 0xFF);

      else if (scene->gui.partspick_selectedpart == ' ') Render_DrawSprite (&sprites[theme->lastmovetarget_spriteindex],  6.0f * PARTSIZE_PCT, 0.0f, PARTSIZE_PCT, 11.0f, 0xFF);

      else if (scene->gui.partspick_selectedpart == 'k') Render_DrawSprite (&sprites[theme->lastmovetarget_spriteindex],  7.0f * PARTSIZE_PCT, 0.0f, PARTSIZE_PCT, 11.0f, 0xFF);

      else if (scene->gui.partspick_selectedpart == 'q') Render_DrawSprite (&sprites[theme->lastmovetarget_spriteindex],  8.0f * PARTSIZE_PCT, 0.0f, PARTSIZE_PCT, 11.0f, 0xFF);

      else if (scene->gui.partspick_selectedpart == 'b') Render_DrawSprite (&sprites[theme->lastmovetarget_spriteindex],  9.0f * PARTSIZE_PCT, 0.0f, PARTSIZE_PCT, 11.0f, 0xFF);

      else if (scene->gui.partspick_selectedpart == 'n') Render_DrawSprite (&sprites[theme->lastmovetarget_spriteindex], 10.0f * PARTSIZE_PCT, 0.0f, PARTSIZE_PCT, 11.0f, 0xFF);

      else if (scene->gui.partspick_selectedpart == 'r') Render_DrawSprite (&sprites[theme->lastmovetarget_spriteindex], 11.0f * PARTSIZE_PCT, 0.0f, PARTSIZE_PCT, 11.0f, 0xFF);

      else if (scene->gui.partspick_selectedpart == 'p') Render_DrawSprite (&sprites[theme->lastmovetarget_spriteindex], 12.0f * PARTSIZE_PCT, 0.0f, PARTSIZE_PCT, 11.0f, 0xFF);

 

      Render_DrawSprite (&sprites[theme->flatsprites[COLOR_WHITE][PART_PAWN]],       0.0f * PARTSIZE_PCT, 0, PARTSIZE_PCT, 11.0f, (((scene->gui.partspick_hoveredpart == 'P') || (scene->gui.partspick_selectedpart == 'P')) ? 0xFF : 0x7F)); // white pawn

      Render_DrawSprite (&sprites[theme->flatsprites[COLOR_WHITE][PART_ROOK]],       1.0f * PARTSIZE_PCT, 0, PARTSIZE_PCT, 11.0f, (((scene->gui.partspick_hoveredpart == 'R') || (scene->gui.partspick_selectedpart == 'R')) ? 0xFF : 0x7F)); // white rook

      Render_DrawSprite (&sprites[theme->flatsprites[COLOR_WHITE][PART_KNIGHT]],     2.0f * PARTSIZE_PCT, 0, PARTSIZE_PCT, 11.0f, (((scene->gui.partspick_hoveredpart == 'N') || (scene->gui.partspick_selectedpart == 'N')) ? 0xFF : 0x7F)); // white knight

      Render_DrawSprite (&sprites[theme->flatsprites[COLOR_WHITE][PART_BISHOP]],     3.0f * PARTSIZE_PCT, 0, PARTSIZE_PCT, 11.0f, (((scene->gui.partspick_hoveredpart == 'B') || (scene->gui.partspick_selectedpart == 'B')) ? 0xFF : 0x7F)); // white bishop

      Render_DrawSprite (&sprites[theme->flatsprites[COLOR_WHITE][PART_QUEEN]],      4.0f * PARTSIZE_PCT, 0, PARTSIZE_PCT, 11.0f, (((scene->gui.partspick_hoveredpart == 'Q') || (scene->gui.partspick_selectedpart == 'Q')) ? 0xFF : 0x7F)); // white queen

      Render_DrawSprite (&sprites[theme->flatsprites[COLOR_WHITE][PART_KING]],       5.0f * PARTSIZE_PCT, 0, PARTSIZE_PCT, 11.0f, (((scene->gui.partspick_hoveredpart == 'K') || (scene->gui.partspick_selectedpart == 'K')) ? 0xFF : 0x7F)); // white king

      Render_DrawSprite (&sprites[theme->lastmovesource_spriteindex],         6.0f * PARTSIZE_PCT, 0, PARTSIZE_PCT, 11.0f, (((scene->gui.partspick_hoveredpart == ' ') || (scene->gui.partspick_selectedpart == ' ')) ? 0xFF : 0x7F)); // erase mark

      Render_DrawSprite (&sprites[theme->flatsprites[COLOR_BLACK][PART_KING]],       7.0f * PARTSIZE_PCT, 0, PARTSIZE_PCT, 11.0f, (((scene->gui.partspick_hoveredpart == 'k') || (scene->gui.partspick_selectedpart == 'k')) ? 0xFF : 0x7F)); // black king

      Render_DrawSprite (&sprites[theme->flatsprites[COLOR_BLACK][PART_QUEEN]],      8.0f * PARTSIZE_PCT, 0, PARTSIZE_PCT, 11.0f, (((scene->gui.partspick_hoveredpart == 'q') || (scene->gui.partspick_selectedpart == 'q')) ? 0xFF : 0x7F)); // black queen

      Render_DrawSprite (&sprites[theme->flatsprites[COLOR_BLACK][PART_BISHOP]],     9.0f * PARTSIZE_PCT, 0, PARTSIZE_PCT, 11.0f, (((scene->gui.partspick_hoveredpart == 'b') || (scene->gui.partspick_selectedpart == 'b')) ? 0xFF : 0x7F)); // black bishop

      Render_DrawSprite (&sprites[theme->flatsprites[COLOR_BLACK][PART_KNIGHT]],    10.0f * PARTSIZE_PCT, 0, PARTSIZE_PCT, 11.0f, (((scene->gui.partspick_hoveredpart == 'n') || (scene->gui.partspick_selectedpart == 'n')) ? 0xFF : 0x7F)); // black knight

      Render_DrawSprite (&sprites[theme->flatsprites[COLOR_BLACK][PART_ROOK]],      11.0f * PARTSIZE_PCT, 0, PARTSIZE_PCT, 11.0f, (((scene->gui.partspick_hoveredpart == 'r') || (scene->gui.partspick_selectedpart == 'r')) ? 0xFF : 0x7F)); // black rook

      Render_DrawSprite (&sprites[theme->flatsprites[COLOR_BLACK][PART_PAWN]],      12.0f * PARTSIZE_PCT, 0, PARTSIZE_PCT, 11.0f, (((scene->gui.partspick_hoveredpart == 'p') || (scene->gui.partspick_selectedpart == 'p')) ? 0xFF : 0x7F)); // black pawn

 

   }

 

   // draw GUI texts

   DRAW_TEXT_IF_NEEDED (scene->gui.comment_text); // move comments

   DRAW_TEXT_IF_NEEDED (scene->gui.history_text); // game history

   DRAW_TEXT_IF_NEEDED (scene->gui.clock_text); // game clock

 

   // draw the chatter channels text

   Render_GetTextBoundaries (-1, chat_fontindex, L"a", &rect);

   combined_height = rect.bottom; // get a string's height

 

   // cycle through all the chat strings...

   ccreply = NULL;

   for (cchistory_index = 0; cchistory_index < scene->gui.cchistory_count; cchistory_index++)

   {

      ccreply = &scene->gui.cchistory[cchistory_index]; // quick access to CC reply

      if ((ccreply->text[0] != 0) && (ccreply->arrival_time + 60.0f > current_time))

         break; // break at the first one that we should display

   }

 

   // have we some to display ?

   if (cchistory_index < scene->gui.cchistory_count)

   {

      // first, get the remaining text's combined height

      for (cchistory_index2 = cchistory_index; cchistory_index2 < scene->gui.cchistory_count; cchistory_index2++)

      {

         ccreply = &scene->gui.cchistory[cchistory_index2]; // quick access to CC reply

 

         combined_width = 10;

         Render_GetTextBoundaries (initial_width - combined_width, chat_fontindex, L"[] : ", &rect);

         combined_width += rect.right;

         Render_GetTextBoundaries (initial_width - combined_width, chat_fontindex, ccreply->channelname, &rect);

         combined_width += rect.right;

         Render_GetTextBoundaries (initial_width - combined_width, chat_fontindex, ccreply->nickname, &rect);

         combined_width += rect.right;

         Render_GetTextBoundaries (initial_width - combined_width, chat_fontindex, ccreply->text, &rect);

         combined_height += rect.bottom; // add this string's height

      }

 

      // now for each string remaining...

      for (; cchistory_index < scene->gui.cchistory_count; cchistory_index++)

      {

         ccreply = &scene->gui.cchistory[cchistory_index]; // quick access to CC reply

         rect.right = 10;

         PRINT_CCREPLY (ccreply); // print CC reply on screen

         combined_height -= (rect.bottom - rect.top); // draw it from top of zone to bottom

      }

   }

 

   // are we online ?

   if (Player_FindByType (PLAYER_INTERNET) != NULL)

   {

      ccreply = &scene->gui.entered_ccreply;

      if (!scene->gui.is_entering_text)

         ccreply->color = RGBACOLOR_SETALPHA (ccreply->color, RGBACOLOR_ALPHA (ccreply->color) / 6); // if there's no text being entered, fade CC reply a lot

 

      rect.right = 10;

      PRINT_CCREPLY (ccreply); // print CC reply on screen

   }

 

   // print GUI texts

   DRAW_TEXT_IF_NEEDED (scene->gui.turn_text); // player turn's text

   DRAW_TEXT_IF_NEEDED (scene->gui.central_text); // central notification zone text

 

   // if needed, print the spinning wheel

   if (scene->gui.want_spinwheel)

      Render_DrawSprite (&sprites[spinner_spriteindex[(int) (10.0f * current_time) % 12]], 47.0f, 46.0f, 6.0f, 8.0f, 255);

 

   // are we in demo mode ? if so, display the program name as a watermark

   Render_wprintf (initial_width / 2, initial_height * 2 / 3, -1, ALIGN_CENTER, ALIGN_CENTER, ALIGN_CENTER, chat_fontindex,

                   D3DCOLOR_RGBA (255, 255, 255, 191),

                   NULL, PROGRAM_NAME L" - " PROGRAM_URL L"\n- %d:%02d -", (int) (DEMO_TIMEOUT - current_time) / 60, (int) (DEMO_TIMEOUT - current_time) % 60);

 

   // end 3D rendering on the back buffer

   //////////////////////////////////////

 

   d3ddev->EndScene (); // ends the 3D scene

   d3ddev->Present (NULL, NULL, NULL, NULL); // displays the created frame on the screen

 

   // update the frame rate

   if (framerate_time < current_time)

   {

      framerate_value = framerate_count;

      framerate_count = 0;

      framerate_time = current_time + 1.0f;

   }

   framerate_count++; // one frame more elapsed

 

   return; // finished

 

 

int Render_LoadMesh (const wchar_t *fmt, ...)

   // this function appends a new mesh in the global meshes buffer and returns its index

 

   static wchar_t meshfile_pathname[MAX_PATH];

   unsigned long hash;

   mesh_t *mesh;

   int mesh_index;

   va_list argptr;

 

   // concatenate all the arguments in one string

   va_start (argptr, fmt);

   wvsprintf (meshfile_pathname, fmt, argptr);

   va_end (argptr);

 

   // resolve wildcards and get content hash

   ResolveWildcard (meshfile_pathname, L".obj");

   hash = HashFile (meshfile_pathname);

   

   // now cycle through all our loaded meshes and see if it's already loaded

   for (mesh_index = 0; mesh_index < mesh_count; mesh_index++)

      if (meshes[mesh_index].hash == hash)

         return (mesh_index); // if we can find it, return its index so as not to load it twice

 

   // reallocate space to hold one mesh more

   meshes = (mesh_t *) SAFE_realloc (meshes, mesh_count, mesh_count + 1, sizeof (mesh_t), false);

   mesh = &meshes[mesh_count]; // quick access to the mesh we'll be working on

 

   // load the mesh

   if (!Render_LoadMesh_Obj (mesh, meshfile_pathname))

   {

      MessageBox (NULL, LOCALIZE (L"Error_UnableToAddMeshD3DXLoadMeshFromXFailed"), LOCALIZE (L"FatalError"), MB_ICONERROR | MB_OK);

      return (-1); // bomb out on error

   }

 

   mesh->hash = hash; // save the hash

   mesh_count++; // we know now one mesh more

   return (mesh_count - 1); // return its index

 

 

int Render_LoadTexture (const wchar_t *fmt, ...)

   // this function appends a new texture in the global textures buffer and returns its index

 

   D3DSURFACE_DESC texture_description;

   wchar_t texturefile_pathname[MAX_PATH];

   static wchar_t *filename;

   unsigned long hash;

   int texture_index;

   va_list argptr;

 

   // concatenate all the arguments in one string

   va_start (argptr, fmt);

   wvsprintf (texturefile_pathname, fmt, argptr);

   va_end (argptr);

 

   // resolve wildcards and get content hash

   ResolveWildcard (texturefile_pathname, L".dds|.jpg|.jpeg|.png|.tga|.bmp");

   hash = HashFile (texturefile_pathname);

 

   // now cycle through all our loaded textures and see if it's already loaded

   for (texture_index = 0; texture_index < texture_count; texture_index++)

      if (textures[texture_index].hash == hash)

         return (texture_index); // if we can find it, return its index so as not to load it twice

 

   // reallocate space to hold one texture more

   textures = (texture_t *) SAFE_realloc (textures, texture_count, texture_count + 1, sizeof (texture_t), false);

 

   // ask Direct3D to prepare texture data

   if (FAILED (D3DXCreateTextureFromFile (d3ddev, texturefile_pathname, &textures[texture_count].texture)))

   {

      MessageBox (NULL, LOCALIZE (L"Error_UnableToAddTextureD3DXCreateTextureFromFileFailed"), LOCALIZE (L"FatalError"), MB_ICONERROR | MB_OK);

      return (-1); // bomb out on error

   }

 

   // get info on the newly loaded texture such as size etc.

   textures[texture_count].texture->GetLevelDesc (0, &texture_description);

   textures[texture_count].width = texture_description.Width; // save texture width (as loaded)

   textures[texture_count].height = texture_description.Height; // save texture height (as loaded)

   textures[texture_count].hash = hash; // save its hash

   texture_count++; // we know now one texture more

   return (texture_count - 1); // return its index

 

 

int Render_LoadFont (const wchar_t *font_name, int font_size, bool is_bold, bool is_italic)

   // this function appends a new font in the global fonts buffer and returns its index

 

   unsigned long pathname_hash;

   int font_index;

 

   // first, get the hash of the requested pathname (include font size and weight parameters)

   pathname_hash = HashString (font_name);

   pathname_hash += 3 * (unsigned long) font_size + 2 * (unsigned long) is_bold + (unsigned long) is_italic;

 

   // now cycle through all our loaded fonts and see if it's already loaded

   for (font_index = 0; font_index < font_count; font_index++)

      if (fonts[font_index].pathname_hash == pathname_hash)

         return (font_index); // if we can find it, return its index so as not to load it twice

 

   // reallocate space to hold one font more

   fonts = (font_t *) SAFE_realloc (fonts, font_count, font_count + 1, sizeof (font_t), false);

 

   // create a Direct3D font object and record font data

   if (FAILED (D3DXCreateFont (d3ddev, font_size, // font height

                               0, // font width

                               (is_bold ? FW_BOLD : FW_NORMAL), // font weight (bold, etc)

                               0, // miplevels

                               is_italic, // is italic

                               DEFAULT_CHARSET, // charset

                               OUT_DEFAULT_PRECIS, // precision

                               CLEARTYPE_QUALITY, // font quality (antialiased or not)

                               DEFAULT_PITCH | FF_DONTCARE, // font family

                               font_name, // font name

                               &fonts[font_count].font))) // and a pointer that will receive the font

   {

      MessageBox (NULL, LOCALIZE (L"Error_UnableToAddFontD3DXCreateFontFailed"), LOCALIZE (L"FatalError"), MB_ICONERROR | MB_OK);

      return (-1); // bomb out on error

   }

 

   fonts[font_count].pathname_hash = pathname_hash; // save its hash

   font_count++; // we know now one font more

   return (font_count - 1); // return its index

 

 

int Render_LoadSprite (const wchar_t *fmt, ...)

   // this function appends a new sprite in the global sprites buffer and returns its index

 

   wchar_t spritefile_pathname[MAX_PATH];

   unsigned long hash;

   int sprite_index;

   va_list argptr;

 

   // concatenate all the arguments in one string

   va_start (argptr, fmt);

   wvsprintf (spritefile_pathname, fmt, argptr);

   va_end (argptr);

 

   // resolve wildcards and get content hash

   ResolveWildcard (spritefile_pathname, L".dds|.jpg|.jpeg|.png|.tga|.bmp");

   hash = HashFile (spritefile_pathname);

 

   // now cycle through all our loaded sprites and see if it's already loaded

   for (sprite_index = 0; sprite_index < sprite_count; sprite_index++)

      if (sprites[sprite_index].hash == hash)

         return (sprite_index); // if we can find it, return its index so as not to load it twice

 

   // reallocate space to hold one sprite more

   sprites = (sprite_t *) SAFE_realloc (sprites, sprite_count, sprite_count + 1, sizeof (sprite_t), false);

 

   // ask Direct3D to prepare texture data

   if (FAILED (D3DXCreateSprite (d3ddev, &sprites[sprite_count].sprite)))

   {

      MessageBox (NULL, LOCALIZE (L"Error_UnableToAddSpriteD3DXCreateSpriteFailed"), LOCALIZE (L"FatalError"), MB_ICONERROR | MB_OK);

      return (-1); // bomb out on error

   }

   sprites[sprite_count].texture_index = Render_LoadTexture (spritefile_pathname); // register and save sprite texture

   sprites[sprite_count].hash = hash; // save its hash

 

   sprite_count++; // we know now one sprite more

   return (sprite_count - 1); // return its index

 

 

int Render_MaterialIndexOf (const wchar_t *material_name)

   // this function returns the index of the material in the global materials array which has the specified name

 

   int material_index;

 

   // cycle through all materials and look whether one with the specified name exists

   for (material_index = 0; material_index < material_count; material_index++)

      if (_wcsicmp (materials[material_index].name, material_name) == 0)

         return (material_index); // if we find one, return its index

 

   return (material_count - 1); // else return the index of the last material in list, which is the default material

 

 

void Render_MouseToFloor (short mouse_x, short mouse_y, float *floor_x, float *floor_y)

   // this function converts a mouse coordinates into floor coordinates by doing vector

   // projection on the floor plane from the eyepoint of the camera

 

   static D3DXPLANE floor_plane;

   static bool is_planefound = false;

 

   D3DXMATRIX projection_matrix;

   D3DXMATRIX view_matrix;

   D3DXMATRIX invertedview_matrix;

   float mouse_pitch;

   float mouse_yaw;

   vector_t v_lookat;

   vector_t v_intersection;

 

   // find the floor plane (only do it once)

   if (!is_planefound)

   {

      D3DXPlaneFromPointNormal (&floor_plane, (D3DXVECTOR3 *) &scene_center, (D3DXVECTOR3 *) &upwards_direction);

      is_planefound = true; // once and for all, as this plane will never change

   }

 

   // get the current projection and view matrices, and invert the view matrix

   d3ddev->GetTransform (D3DTS_PROJECTION, &projection_matrix);

   d3ddev->GetTransform (D3DTS_VIEW, &view_matrix);

   D3DXMatrixInverse (&invertedview_matrix, NULL, &view_matrix);

 

   // convert the mouse coordinates to relative pitch and yaw

   mouse_pitch =  (((mouse_x * 2.0f) / current_width) - 1) / projection_matrix._11;

   mouse_yaw = -(((mouse_y * 2.0f) / current_height) - 1) / projection_matrix._22;

 

   // now build a matrix that will describe the mouse direction vector, add it to the camera position, and make it 200 times longer

   v_lookat.x = camera_position.x + (mouse_pitch * invertedview_matrix._11 + mouse_yaw * invertedview_matrix._21 + invertedview_matrix._31) * 200.0f;

   v_lookat.y = camera_position.y + (mouse_pitch * invertedview_matrix._12 + mouse_yaw * invertedview_matrix._22 + invertedview_matrix._32) * 200.0f;

   v_lookat.z = camera_position.z + (mouse_pitch * invertedview_matrix._13 + mouse_yaw * invertedview_matrix._23 + invertedview_matrix._33) * 200.0f;

 

   // and the intersection point with our ray

   D3DXPlaneIntersectLine ((D3DXVECTOR3 *) &v_intersection, &floor_plane, (D3DXVECTOR3 *) &camera_position, (D3DXVECTOR3 *) &v_lookat);

 

   // now fill the return values

   *floor_x = v_intersection.x;

   *floor_y = v_intersection.y;

 

   return; // finished

 

 

bool Render_IsMouseInBox (short mouse_x, short mouse_y, float x_percent, float y_percent, float width_percent, float height_percent)

   // helper function that returns whether the mouse coordinates are inside a given square

 

   float mousex_percent;

   float mousey_percent;

 

   // compute mouse coordinates in percents

   mousex_percent = (float) (mouse_x * 100) / current_width;

   mousey_percent = (float) (mouse_y * 100) / current_height;

 

   return ((mousex_percent >= x_percent) && (mousex_percent <= x_percent + width_percent)

           && (mousey_percent >= y_percent) && (mousey_percent <= y_percent + height_percent));

 

 

static bool Render_LoadMesh_Obj (mesh_t *mesh, const wchar_t *objfile_pathname)

   // this function loads a mesh from a Wavefront Object file (.obj)

 

   #define OBJ_INCREASE_OR_RESIZE(count,maxcount,increment,arrayptr,type,erase) { \

   #define OBJ_CONVERT_INDEX(element,current_element_count) if ((element) < 0) (element) = (current_element_count) + (element); else (element)--;

   #define OBJ_GET_EXISTING_INDEX_OR_APPEND_VERTEX(uniquevertex) \

 

   typedef struct obj_uniquevertex_s { long iv, in, itc; } obj_uniquevertex_t;

   typedef struct obj_face_s { obj_uniquevertex_t v1, v2, v3; } obj_face_t;

   typedef struct obj_hashbucket_s { int count; long *indices; /* mallocated */ } obj_hashbucket_t;

   typedef struct objfile_s

   {

      vector_t *vs; long v_count; long v_maxcount; // array mallocated to v_maxcount

      vector_t *ns; long n_count; long n_maxcount; // array mallocated to n_maxcount

      texcoord_t *tcs; long tc_count; long tc_maxcount; // array mallocated to tc_maxcount

      obj_face_t *fs; long f_count; long f_maxcount; // array mallocated to f_maxcount

   } objfile_t;

 

   static obj_hashbucket_t hashtable[256];

   objfile_t obj;

   obj_hashbucket_t *hash;

   obj_face_t *f;

   vertex_t *vertices; // mallocated

   unsigned long *indices; // mallocated

   vertex_t *current_vertex;

   struct _stat fileinfo;

   char *filedata; // mallocated

   char *fileptr;

   int vertex_index;

   int array_index;

   void *ptr_to;

   FILE *fp;

 

   // open the mesh file and read it as a whole

   _wstat (objfile_pathname, &fileinfo);

   _wfopen_s (&fp, objfile_pathname, L"rb");

   if (fp == NULL)

      return (false); // bomb out on error

   filedata = (char *) SAFE_malloc (fileinfo.st_size, sizeof (char), false); // mallocate space for data

   fread (filedata, fileinfo.st_size, 1, fp); // read file as a whole

   fclose (fp); // file is read, close it

 

   // allocate space for an arbitrary amount of vertices, texture coordinates, normals and faces

   memset (&obj, 0, sizeof (obj));

   obj.v_maxcount = 10000; obj.vs = (vector_t *) SAFE_malloc (obj.v_maxcount, sizeof (vector_t), false);

   obj.n_maxcount = 10000; obj.ns = (vector_t *) SAFE_malloc (obj.n_maxcount, sizeof (vector_t), false);

   obj.tc_maxcount = 10000; obj.tcs = (texcoord_t *) SAFE_malloc (obj.tc_maxcount, sizeof (texcoord_t), false);

   obj.f_maxcount = 5000; obj.fs = (obj_face_t *) SAFE_malloc (obj.f_maxcount, sizeof (obj_face_t), true); // zero out the faces array (IMPORTANT !)

 

   // read file line per line...

   fileptr = filedata - 1; // start parsing line after line

   while (fileptr != NULL)

   {

      fileptr++; // skip the line feed (or reach the first character, if it's the first pass)

 

      // is it a vertex-related line ?

      if (fileptr[0] == L'v')

      {

         // is it a vertex, a normal or a texture coordinate ?

         if ((fileptr[1] == L' ') && (sscanf_s (&fileptr[2], "%f %f %f", &obj.vs[obj.v_count].x, &obj.vs[obj.v_count].y, &obj.vs[obj.v_count].z) == 3))

            OBJ_INCREASE_OR_RESIZE (obj.v_count, obj.v_maxcount, 10000, obj.vs, vector_t, false) // one vertex more has been read

         else if ((fileptr[1] == L'n') && (sscanf_s (&fileptr[3], "%f %f %f", &obj.ns[obj.n_count].x, &obj.ns[obj.n_count].y, &obj.ns[obj.n_count].z) == 3))

            OBJ_INCREASE_OR_RESIZE (obj.n_count, obj.n_maxcount, 10000, obj.ns, vector_t, false) // one normal more has been read

         else if ((fileptr[1] == L't') && (sscanf_s (&fileptr[3], "%f %f", &obj.tcs[obj.tc_count].u, &obj.tcs[obj.tc_count].v) == 2))

            OBJ_INCREASE_OR_RESIZE (obj.tc_count, obj.tc_maxcount, 10000, obj.tcs, texcoord_t, false) // one texture coordinate more has been read

      }

 

      // else is it a face-related line ?

      else if (fileptr[0] == L'f')

      {

         // get a quick pointer to current face (note: it's been already blanked out by malloc())

         f = &obj.fs[obj.f_count];

 

         // is it a face with normals, a face without normals or a face without normals and texture coordinates ?

         if ((sscanf_s (&fileptr[2], "%d/%d/%d %d/%d/%d %d/%d/%d", &f->v1.iv, &f->v1.itc, &f->v1.in, &f->v2.iv, &f->v2.itc, &f->v2.in, &f->v3.iv, &f->v3.itc, &f->v3.in) == 9)

             || (sscanf_s (&fileptr[2], "%d/%d %d/%d %d/%d", &f->v3.iv, &f->v3.itc, &f->v2.iv, &f->v2.itc, &f->v3.iv, &f->v3.itc) == 6)

             || (sscanf_s (&fileptr[2], "%d %d %d", &f->v3.iv, &f->v2.iv, &f->v3.iv) == 6))

         {

            OBJ_CONVERT_INDEX (f->v1.iv, obj.v_count);

            OBJ_CONVERT_INDEX (f->v1.in, obj.n_count); // if no normal could be read, its index will be converted from 0 to -1

            OBJ_CONVERT_INDEX (f->v1.itc, obj.tc_count); // if no texcoord could be read, its index will be converted from 0 to -1

            OBJ_CONVERT_INDEX (f->v2.iv, obj.v_count);

            OBJ_CONVERT_INDEX (f->v2.in, obj.n_count); // if no normal could be read, its index will be converted from 0 to -1

            OBJ_CONVERT_INDEX (f->v2.itc, obj.tc_count); // if no texcoord could be read, its index will be converted from 0 to -1

            OBJ_CONVERT_INDEX (f->v3.iv, obj.v_count);

            OBJ_CONVERT_INDEX (f->v3.in, obj.n_count); // if no normal could be read, its index will be converted from 0 to -1

            OBJ_CONVERT_INDEX (f->v3.itc, obj.tc_count); // if no texcoord could be read, its index will be converted from 0 to -1