/** Displays trail
*/
static void orxBounce_DisplayTrail(const orxBITMAP *_pstBitmap)
{
#define STORE_VERTEX(INDEX, X, Y, U, V, RGBA) astVertexList[INDEX].fX = X; astVertexList[INDEX].fY = Y; astVertexList[INDEX].fU = U; astVertexList[INDEX].fV = V; astVertexList[INDEX].stRGBA = RGBA;
orxDISPLAY_VERTEX astVertexList[TRAIL_POINT_NUMBER * 2];
orxVECTOR vOffset;
orxU32 i;
/* For all points */
for(i = 0; i < TRAIL_POINT_NUMBER; i++)
{
orxVECTOR vVertex1, vVertex2;
orxU32 u32Index, u32NextIndex;
/* Gets barrel indices */
u32Index = (i + su32TrailIndex) % TRAIL_POINT_NUMBER;
u32NextIndex = (i + 1 + su32TrailIndex) % TRAIL_POINT_NUMBER;
/* Not at the end? */
if(i < TRAIL_POINT_NUMBER - 1)
{
/* Gets offset vector */
orxVector_Mulf(&vOffset, orxVector_Normalize(&vOffset, orxVector_2DRotate(&vOffset, orxVector_Sub(&vOffset, &savTrailPointList[u32NextIndex], &savTrailPointList[u32Index]), orxMATH_KF_PI_BY_2)), orx2F(40.0f) / orxMath_Pow(orxS2F(i), orx2F(0.6f)));
}
/* Computes vertices positions */
orxVector_Add(&vVertex1, &savTrailPointList[u32Index], &vOffset);
orxVector_Sub(&vVertex2, &savTrailPointList[u32Index], &vOffset);
/* Stores vertices */
STORE_VERTEX(i * 2, vVertex1.fX, vVertex1.fY, orxFLOAT_0, orxU2F(i) / orxU2F(TRAIL_POINT_NUMBER - 1), orx2RGBA(0xFF, 0xFF, 0xFF, 0xFF * i / (TRAIL_POINT_NUMBER + 50)));
STORE_VERTEX(i * 2 + 1, vVertex2.fX, vVertex2.fY, orxFLOAT_1, orxU2F(i) / orxU2F(TRAIL_POINT_NUMBER - 1), orx2RGBA(0xFF, 0xFF, 0xFF, 0xFF * i / (TRAIL_POINT_NUMBER + 50)));
}
/* Draws trail */
orxDisplay_DrawMesh(_pstBitmap, orxDISPLAY_SMOOTHING_ON, orxDISPLAY_BLEND_MODE_ALPHA, TRAIL_POINT_NUMBER * 2, astVertexList);
}
/** Gets a random orxU32 value
* @param[in] _u32Min Minimum boundary
* @param[in] _u32Max Maximum boundary
* @return Random value
*/
orxU32 orxFASTCALL orxMath_GetRandomU32(orxU32 _u32Min, orxU32 _u32Max)
{
orxU32 u32Rand;
/* Gets raw random number */
u32Rand = rand();
/* Done! */
return (u32Rand == RAND_MAX) ? _u32Max : (orxF2U((orx2F(u32Rand) * (orx2F(1.0f / RAND_MAX)) * (orxU2F(_u32Max) + 1 - orxU2F(_u32Min))) + orxS2F(_u32Min)));
}
orxSTATUS orxFASTCALL orxDisplay_SDL_Init()
{
orxSTATUS eResult;
/* Was not already initialized? */
if(!(sstDisplay.u32Flags & orxDISPLAY_KU32_STATIC_FLAG_READY))
{
/* Cleans static controller */
orxMemory_Zero(&sstDisplay, sizeof(orxDISPLAY_STATIC));
/* Is SDL partly initialized? */
if(SDL_WasInit(SDL_INIT_EVERYTHING) != 0)
{
/* Inits the video subsystem */
eResult = (SDL_InitSubSystem(SDL_INIT_VIDEO) == 0) ? orxSTATUS_SUCCESS : orxSTATUS_FAILURE;
}
else
{
/* Inits SDL with video */
eResult = (SDL_Init(SDL_INIT_VIDEO) == 0) ? orxSTATUS_SUCCESS : orxSTATUS_FAILURE;
}
/* Valid? */
if(eResult != orxSTATUS_FAILURE)
{
#ifdef __orxGP2X__
/* Inits display using config values? */
sstDisplay.pstScreen = SDL_SetVideoMode(orxDISPLAY_KU32_SCREEN_WIDTH, orxDISPLAY_KU32_SCREEN_HEIGHT, orxDISPLAY_KU32_SCREEN_DEPTH, SDL_HWSURFACE | SDL_DOUBLEBUF | SDL_ANYFORMAT);
/* Stores values */
sstDisplay.fScreenWidth = orxU2F(orxDISPLAY_KU32_SCREEN_WIDTH);
sstDisplay.fScreenHeight = orxU2F(orxDISPLAY_KU32_SCREEN_HEIGHT);
#else /* __orxGP2X__ */
{
orxU32 u32ConfigWidth, u32ConfigHeight, u32ConfigDepth, u32Flags;
/* Gets resolution from config */
orxConfig_PushSection(orxDISPLAY_KZ_CONFIG_SECTION);
u32ConfigWidth = orxConfig_GetU32(orxDISPLAY_KZ_CONFIG_WIDTH);
u32ConfigHeight = orxConfig_GetU32(orxDISPLAY_KZ_CONFIG_HEIGHT);
u32ConfigDepth = orxConfig_GetU32(orxDISPLAY_KZ_CONFIG_DEPTH);
/* Full screen? */
if(orxConfig_GetBool(orxDISPLAY_KZ_CONFIG_FULLSCREEN) != orxFALSE)
{
/* Updates flags */
u32Flags = SDL_FULLSCREEN | SDL_HWSURFACE | SDL_DOUBLEBUF | SDL_ANYFORMAT;
}
else
{
/* Updates flags */
u32Flags = SDL_HWSURFACE | SDL_DOUBLEBUF | SDL_ANYFORMAT;
}
/* Inits display using config values? */
if((sstDisplay.pstScreen = SDL_SetVideoMode(u32ConfigWidth, u32ConfigHeight, u32ConfigDepth, u32Flags)) == orxNULL)
{
/* Inits display using default parameters */
sstDisplay.pstScreen = SDL_SetVideoMode(orxDISPLAY_KU32_SCREEN_WIDTH, orxDISPLAY_KU32_SCREEN_HEIGHT, orxDISPLAY_KU32_SCREEN_DEPTH, SDL_HWSURFACE | SDL_DOUBLEBUF | SDL_ANYFORMAT);
/* Stores values */
sstDisplay.fScreenWidth = orxU2F(orxDISPLAY_KU32_SCREEN_WIDTH);
sstDisplay.fScreenHeight = orxU2F(orxDISPLAY_KU32_SCREEN_HEIGHT);
}
else
{
/* Stores values */
sstDisplay.fScreenWidth = orxU2F(u32ConfigWidth);
sstDisplay.fScreenHeight = orxU2F(u32ConfigHeight);
}
/* Pops config section */
orxConfig_PopSection();
}
#endif /* __orxGP2X__ */
/* Updates result ? */
eResult = (sstDisplay.pstScreen != NULL) ? orxSTATUS_SUCCESS : orxSTATUS_FAILURE;
/* Valid? */
if(eResult != orxSTATUS_FAILURE)
{
orxCLOCK *pstClock;
/* Gets clock */
pstClock = orxClock_FindFirst(orx2F(-1.0f), orxCLOCK_TYPE_CORE);
/* Valid? */
if(pstClock != orxNULL)
{
/* Registers event update function */
eResult = orxClock_Register(pstClock, orxDisplay_SDL_EventUpdate, orxNULL, orxMODULE_ID_DISPLAY, orxCLOCK_PRIORITY_HIGHEST);
}
/* Decoration? */
if((orxConfig_HasValue(orxDISPLAY_KZ_CONFIG_DECORATION) == orxFALSE)
|| (orxConfig_GetBool(orxDISPLAY_KZ_CONFIG_DECORATION) != orxFALSE))
{
/* Logs message */
orxLOG("This plugin can't remove window decorations.");
}
/* Has VSync value? */
if(orxConfig_HasValue(orxDISPLAY_KZ_CONFIG_VSYNC) != orxFALSE)
{
/* Logs message */
orxLOG("This plugin can't handle vsync.");
}
/* Updates its title */
SDL_WM_SetCaption(orxConfig_GetString(orxDISPLAY_KZ_CONFIG_TITLE), orxNULL);
/* Sets module as ready */
sstDisplay.u32Flags = orxDISPLAY_KU32_STATIC_FLAG_READY;
}
}
}
/* Done! */
return eResult;
}
