Initial commit

Torque/SDK/engine/game/fx/underLava.cc

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+//-----------------------------------------------------------------------------
+// Torque Game Engine
+// Copyright (C) GarageGames.com, Inc.
+//-----------------------------------------------------------------------------
+
+#include "game/fx/underLava.h"
+
+#include "dgl/dgl.h"
+#include "math/mRect.h"
+#include "dgl/gTexManager.h"
+#include "terrain/waterBlock.h"
+#include "math/mConstants.h"
+
+UnderLavaFX gLavaFX;
+
+
+//**************************************************************************
+// Under lava FX  - "Lava - With pumice!"
+//**************************************************************************
+UnderLavaFX::UnderLavaFX()
+{
+
+}
+
+//--------------------------------------------------------------------------
+// Init
+//--------------------------------------------------------------------------
+void UnderLavaFX::init()
+{
+   RectI viewport;
+   dglGetViewport( &viewport );
+
+   mViewSize = viewport.extent;
+
+   mTexFrequency.x = F32(viewport.extent.x / viewport.extent.y);
+   mTexFrequency.y = 1.0;
+
+   mNumPoints.x = (S32)(50 * F32(viewport.extent.x / viewport.extent.y));
+   mNumPoints.y = 50;
+
+   mWave[0].amplitude = 0.02;
+   mWave[0].frequency = 2.0;
+   mWave[0].velocity = Sim::getCurrentTime() / 1000.0 * 2.0;
+
+   mMoveSpeed = Sim::getCurrentTime() / 1000.0 * 0.025;
+}
+
+//--------------------------------------------------------------------------
+// Render
+//--------------------------------------------------------------------------
+void UnderLavaFX::render()
+{
+   init();
+
+   glMatrixMode(GL_MODELVIEW);
+   glPushMatrix();
+   glLoadIdentity();
+   glMatrixMode(GL_PROJECTION);
+   glPushMatrix();
+   glLoadIdentity();
+
+   glEnable(GL_TEXTURE_2D);
+//   TextureHandle lavaTex = WaterBlock::getSubmergeTexture(0);
+   glBindTexture(GL_TEXTURE_2D, WaterBlock::getSubmergeTexture(0).getGLName());
+
+   glEnable(GL_BLEND);
+   glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+   glDepthMask(GL_FALSE);
+   glColor4f(1.0, 1.0, 1.0, 0.5);
+
+   if( WaterBlock::getSubmergeTexture(0) )
+   {
+      glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+
+      // render layer 1
+      for( U32 i=0; i<mNumPoints.y; i++ )
+      {
+         renderRow( i, mNumPoints.y-1, mNumPoints.x-1 );
+      }
+   }
+
+   // give second layer a different phase
+   mWave[0].velocity += 10.0;
+
+//   lavaTex = WaterBlock::getSubmergeTexture(1);
+
+   if( WaterBlock::getSubmergeTexture(1) )
+   {
+      glBindTexture(GL_TEXTURE_2D, WaterBlock::getSubmergeTexture(1).getGLName());
+
+      // render layer 2
+      for( U32 i=0; i<mNumPoints.y; i++ )
+      {
+         renderRow( i, mNumPoints.y-1, mNumPoints.x-1 );
+      }
+   }
+
+   glDepthMask(GL_TRUE);
+   glDisable(GL_TEXTURE_2D);
+   glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+   glDisable(GL_BLEND);
+
+   glMatrixMode(GL_PROJECTION);
+   glPopMatrix();
+   glMatrixMode(GL_MODELVIEW);
+   glPopMatrix();
+}
+
+
+//--------------------------------------------------------------------------
+// Render row (triangle strip)
+//--------------------------------------------------------------------------
+void UnderLavaFX::renderRow( U32 row, U32 numRows, U32 numColumns )
+{
+
+   F32 xMult = F32(2.0) / F32(numColumns);
+   F32 yMult = F32(2.0) / F32(numRows);
+
+   glBegin( GL_TRIANGLE_STRIP );
+
+      for( U32 i=0; i<numColumns+1; i++ )
+      {
+         F32 u = F32(i) / F32(numColumns) * mTexFrequency.x;
+         F32 v = F32(row) / F32(numRows) * mTexFrequency.y;
+
+         u += mMoveSpeed + mWave[0].amplitude * mSin( u * M_2PI * mWave[0].frequency + mWave[0].velocity );
+         v += mMoveSpeed + mWave[0].amplitude * mSin( v * M_2PI * mWave[0].frequency + mWave[0].velocity );
+
+         glTexCoord2f( u, v );
+         glVertex2f( -1.0 + i * xMult, -1.0 + row * yMult );
+
+         v = F32(row+1) / F32(numRows) * mTexFrequency.y;
+         v += mMoveSpeed + mWave[0].amplitude * mSin( v * M_2PI * mWave[0].frequency + mWave[0].velocity );
+
+         glTexCoord2f( u, v );
+         glVertex2f( -1.0 + i * xMult, -1.0 + (row+1) * yMult );
+
+      }
+
+   glEnd();
+
+}