bool Actor::shouldDrawShadow(int shadowId) {
Shadow *shadow = &_shadowArray[shadowId];
if (!shadow->active)
return false;
// Don't draw a shadow if the shadow caster and the actor are on different sides
// of the the shadow plane.
Sector *sector = shadow->planeList.front().sector;
Math::Vector3d n = sector->getNormal();
Math::Vector3d p = sector->getVertices()[0];
float d = -(n.x() * p.x() + n.y() * p.y() + n.z() * p.z());
p = getPos();
// Move the tested point a bit above ground level.
if (g_grim->getGameType() == GType_MONKEY4)
p.y() += 0.01;
else
p.z() += 0.01;
bool actorSide = n.x() * p.x() + n.y() * p.y() + n.z() * p.z() + d < 0.f;
p = shadow->pos;
bool shadowSide = n.x() * p.x() + n.y() * p.y() + n.z() * p.z() + d < 0.f;
if (actorSide == shadowSide)
return true;
return false;
}
void GfxTinyGL::startActorDraw(Graphics::Vector3d pos, float scale, float yaw, float pitch, float roll) {
tglEnable(TGL_TEXTURE_2D);
tglMatrixMode(TGL_MODELVIEW);
tglPushMatrix();
if (_currentShadowArray) {
// TODO find out why shadowMask at device in woods is null
if (!_currentShadowArray->shadowMask) {
_currentShadowArray->shadowMask = new byte[_screenWidth * _screenHeight];
_currentShadowArray->shadowMaskSize = _screenWidth * _screenHeight;
}
assert(_currentShadowArray->shadowMask);
//tglSetShadowColor(255, 255, 255);
tglSetShadowColor(_shadowColorR, _shadowColorG, _shadowColorB);
tglSetShadowMaskBuf(_currentShadowArray->shadowMask);
SectorListType::iterator i = _currentShadowArray->planeList.begin();
Sector *shadowSector = i->sector;
tglShadowProjection(_currentShadowArray->pos, shadowSector->getVertices()[0], shadowSector->getNormal(), _currentShadowArray->dontNegate);
}
tglTranslatef(pos.x(), pos.y(), pos.z());
tglScalef(scale, scale, scale);
tglRotatef(yaw, 0, 0, 1);
tglRotatef(pitch, 1, 0, 0);
tglRotatef(roll, 0, 1, 0);
}
void GfxTinyGL::drawShadowPlanes() {
tglEnable(TGL_SHADOW_MASK_MODE);
if (!_currentShadowArray->shadowMask) {
_currentShadowArray->shadowMask = new byte[_screenWidth * _screenHeight];
_currentShadowArray->shadowMaskSize = _screenWidth * _screenHeight;
}
memset(_currentShadowArray->shadowMask, 0, _screenWidth * _screenHeight);
tglSetShadowMaskBuf(_currentShadowArray->shadowMask);
_currentShadowArray->planeList.begin();
for (SectorListType::iterator i = _currentShadowArray->planeList.begin(); i != _currentShadowArray->planeList.end(); ++i) {
Sector *shadowSector = i->sector;
tglBegin(TGL_POLYGON);
for (int k = 0; k < shadowSector->getNumVertices(); k++) {
tglVertex3f(shadowSector->getVertices()[k].x(), shadowSector->getVertices()[k].y(), shadowSector->getVertices()[k].z());
}
tglEnd();
}
tglSetShadowMaskBuf(NULL);
tglDisable(TGL_SHADOW_MASK_MODE);
}
void L1_GetSectorOppositeEdge() {
lua_Object actorObj = lua_getparam(1);
lua_Object nameObj = lua_getparam(2);
if (!lua_isuserdata(actorObj) || lua_tag(actorObj) != MKTAG('A','C','T','R'))
return;
if (!lua_isstring(nameObj)) {
lua_pushnil();
return;
}
Actor *actor = getactor(actorObj);
const char *name = lua_getstring(nameObj);
int numSectors = g_grim->getCurrScene()->getSectorCount();
for (int i = 0; i < numSectors; i++) {
Sector *sector = g_grim->getCurrScene()->getSectorBase(i);
if (strmatch(sector->getName(), name)) {
if (sector->getNumVertices() != 4)
warning("GetSectorOppositeEdge(): cheat box with %d (!= 4) edges!", sector->getNumVertices());
Graphics::Vector3d* vertices = sector->getVertices();
Sector::ExitInfo e;
sector->getExitInfo(actor->getPos(), -actor->getPuckVector(), &e);
float frac = (e.exitPoint - vertices[e.edgeVertex + 1]).magnitude() / e.edgeDir.magnitude();
e.edgeVertex -= 2;
if (e.edgeVertex < 0)
e.edgeVertex += sector->getNumVertices();
Graphics::Vector3d edge = vertices[e.edgeVertex + 1] - vertices[e.edgeVertex];
Graphics::Vector3d p = vertices[e.edgeVertex] + edge * frac;
lua_pushnumber(p.x());
lua_pushnumber(p.y());
lua_pushnumber(p.z());
return;
}
}
lua_pushnil();
}
