165 lines
4.3 KiB
C++
165 lines
4.3 KiB
C++
//
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// SuperTuxKart - a fun racing game with go-kart
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// Copyright (C) 2006-2015 Joerg Henrichs
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 3
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#include "graphics/moving_texture.hpp"
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#include "io/xml_node.hpp"
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/** Constructor for an animated texture.
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* \param matrix The texture matrix to modify.
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* \param node An XML node containing dx and dy attributes to set the
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* speed of the animation.
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*/
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MovingTexture::MovingTexture(core::matrix4 *matrix, const XMLNode &node)
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: m_matrix(matrix)
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{
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m_dx = 0.0f;
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m_dy = 0.0f;
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m_dt = 0.0f;
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m_x = 0.0f;
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m_y = 0.0f;
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m_count = 0.0f;
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m_sp_tm = NULL;
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if (m_matrix)
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{
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core::vector3df v = m_matrix->getTranslation();
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m_x = v.X;
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m_y = v.Y;
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}
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// by default the animation by step is disabled
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m_isAnimatedByStep = false;
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node.get("dx", &m_dx);
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node.get("dy", &m_dy);
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node.get("dt", &m_dt);
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node.get("animByStep", &m_isAnimatedByStep);
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} // MovingTexture
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//-----------------------------------------------------------------------------
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/** Constructor for an animated texture, specifying the speed of the animation
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* directly.
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* \param matrix The texture matrix to modify.
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* \param dx Speed of the animation in X direction.
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* \param dy Speed of the animation in Y direction.
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*/
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MovingTexture::MovingTexture(core::matrix4 *matrix, float dx, float dy)
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: m_matrix(matrix)
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{
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// by default the animation by step is disabled
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m_isAnimatedByStep = false;
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m_dx = dx;
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m_dy = dy;
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core::vector3df v = m_matrix->getTranslation();
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m_x = v.X;
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m_y = v.Y;
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m_count = 0.0f;
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m_sp_tm = NULL;
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} // MovingTexture
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//-----------------------------------------------------------------------------
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MovingTexture::MovingTexture(float dx, float dy)
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{
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// by default the animation by step is disabled
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m_isAnimatedByStep = false;
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m_dx = dx;
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m_dy = dy;
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m_x = 0;
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m_y = 0;
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m_count = 0.0f;
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m_matrix = NULL;
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m_sp_tm = NULL;
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} // MovingTexture
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//-----------------------------------------------------------------------------
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/** Destructor for an animated texture.
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*/
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MovingTexture::~MovingTexture()
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{
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} // ~MovingTexture
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//-----------------------------------------------------------------------------
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/** Resets at (re)start of a race.
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*/
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void MovingTexture::reset()
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{
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m_x = m_y = 0;
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if (m_matrix)
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{
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m_matrix->setTextureTranslate(m_x, m_y);
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}
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else if (m_sp_tm)
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{
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m_sp_tm[0] = 0.0f;
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m_sp_tm[1] = 0.0f;
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}
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} // reset
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//-----------------------------------------------------------------------------
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/** Updates the transform of an animated texture.
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* \param dt Time step size.
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*/
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void MovingTexture::update(float dt)
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{
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if (m_isAnimatedByStep)
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{
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m_count += dt;
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if(m_count > m_dt)
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{
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m_count -= m_dt;
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m_x = m_x + 1.0f*m_dx;
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m_y = m_y + 1.0f*m_dy;
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if(m_x>1.0f) m_x = fmod(m_x, 1.0f);
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if(m_y>1.0f) m_y = fmod(m_y, 1.0f);
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if (m_matrix)
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{
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m_matrix->setTextureTranslate(m_x, m_y);
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}
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else if (m_sp_tm)
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{
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m_sp_tm[0] = m_x;
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m_sp_tm[1] = m_y;
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}
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}
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}
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else
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{
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m_x = m_x + dt*m_dx;
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m_y = m_y + dt*m_dy;
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if(m_x>1.0f) m_x = fmod(m_x, 1.0f);
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if(m_y>1.0f) m_y = fmod(m_y, 1.0f);
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if (m_matrix)
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{
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m_matrix->setTextureTranslate(m_x, m_y);
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}
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else if (m_sp_tm)
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{
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m_sp_tm[0] = m_x;
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m_sp_tm[1] = m_y;
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}
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}
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} // update
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