153 lines
3.1 KiB
C++
153 lines
3.1 KiB
C++
/*=========================================================================
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scrollbg.cpp
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Author: PKG
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Created:
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Project: Spongebob
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Purpose:
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Copyright (c) 2000 Climax Development Ltd
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===========================================================================*/
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/*----------------------------------------------------------------------
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Includes
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-------- */
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#include "frontend\scrollbg.h"
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#ifndef __GFX_SPRBANK_H__
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#include "gfx\sprbank.h"
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#endif
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/* Std Lib
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------- */
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/* Data
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---- */
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#ifndef __SPR_SPRITES_H__
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#include <sprites.h>
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#endif
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/*----------------------------------------------------------------------
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Tyepdefs && Defines
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------------------- */
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/*----------------------------------------------------------------------
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Structure defintions
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-------------------- */
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/*----------------------------------------------------------------------
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Function Prototypes
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------------------- */
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/*----------------------------------------------------------------------
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Vars
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---- */
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/*----------------------------------------------------------------------
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Function:
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Purpose:
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Params:
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Returns:
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---------------------------------------------------------------------- */
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void CScrollyBackground::init()
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{
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m_sprites=new ("Scrolly Background sprites") SpriteBank;
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m_sprites->load(SPRITES_SPRITES_SPR);
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m_xOff=m_yOff=0;
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setSpeed(DEFAULT_X_SPEED,DEFAULT_Y_SPEED);
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setSpeedScale(DEFAULT_SPEED_SCALE);
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setOt(DEFAULT_OT);
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setFrame(FRM__BUTX);
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setTheDrawMode(DRAWMODE_NORMAL);
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setColour(128,128,128);
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setScale(NORMAL_SCALE);
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}
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/*----------------------------------------------------------------------
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Function:
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Purpose:
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Params:
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Returns:
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---------------------------------------------------------------------- */
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void CScrollyBackground::shutdown()
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{
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m_sprites->dump(); delete m_sprites; m_sprites=NULL;
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}
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/*----------------------------------------------------------------------
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Function:
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Purpose:
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Params:
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Returns:
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---------------------------------------------------------------------- */
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void CScrollyBackground::render()
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{
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int smode;
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POLY_FT4 *ft4;
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sFrameHdr *fh;
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int x,y,w,h;
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smode=m_drawMode;
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fh=m_sprites->getFrameHeader(m_frame);
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w=(fh->W*m_scale)>>8;
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h=(fh->H*m_scale)>>8;
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y=(m_yOff>>m_speedScale)-h;
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do
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{
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x=(m_xOff>>m_speedScale)-w;
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do
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{
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if(m_scale==NORMAL_SCALE)
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{
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ft4=m_sprites->printFT4(fh,x,y,0,0,m_ot);
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}
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else
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{
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ft4=m_sprites->printFT4Scaled(fh,x,y,0,0,m_ot,m_scale);
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}
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setShadeTex(ft4,0);
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setSemiTrans(ft4,true);
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ft4->tpage|=(smode<<5);
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setRGB0(ft4,m_r,m_g,m_b);
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x+=w;
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}
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while(x<512+64);
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y+=h;
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}
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while(y<256+64);
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}
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/*----------------------------------------------------------------------
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Function:
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Purpose:
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Params:
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Returns:
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---------------------------------------------------------------------- */
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void CScrollyBackground::think(int _frames)
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{
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sFrameHdr *fh;
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int w,h;
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fh=m_sprites->getFrameHeader(m_frame);
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w=(fh->W*m_scale)>>8;
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h=(fh->H*m_scale)>>8;
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m_xOff=(m_xOff+(_frames*m_xSpeed))%(w<<m_speedScale);
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m_yOff=(m_yOff+(_frames*m_ySpeed))%(h<<m_speedScale);
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}
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/*===========================================================================
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end */ |