Kooli
Still Fresh
I am trying to draw a sprite to screen and the player can move it around but I get a trail behind the sprite as I am using GpRectFill() . How can I stop this? I tried to use GpRectFill() in the opposite colour behind the sprite but it doesn't work.. Here is the code...
Thanks in advance
Kooli
Code:
/*Attempt to draw a sprite and move it around the screen*/
#include "gpstdlib.h"
#include "gpstdio.h"
#include "gpgraphic.h"
#include "gpfont.h"
#define SPRITESIZE 10
void GpMain(void *arg);
void Control_Sprite(void);
void Setup(void);
void Get_Direction(void);
void Side_Check(void);
GPDRAWSURFACE gpDraw[2];
/*globals*/
int px,py,keypress,nflip; /*player x and y coord*/
/**************************************************************/
void GpMain(void *arg)
{
Setup();
Control_Sprite();
}
/****************************************************************/
void Setup(void)
{
nflip=1; /*set page flipper to page 1 start*/
GpLcdSurfaceGet(&gpDraw[0],0); /*LCD setup*/
GpLcdSurfaceGet(&gpDraw[1],1);
/*both surfaces to black*/
GpRectFill(NULL,&gpDraw[1],0,0,gpDraw[1].buf_w,gpDraw[1].buf_h,0x00);
GpRectFill(NULL,&gpDraw[0],0,0,gpDraw[0].buf_w,gpDraw[0].buf_h,0x00);
GpSurfaceSet(&gpDraw[0]); /*set surface*/
px=py=32; /*set up starting sprite coords*/
}
/*************************************************************/
void Control_Sprite(void)
{
while(1)
{
Get_Direction();
Side_Check();
/*redraw sprite*/
GpRectFill(NULL,&gpDraw[nflip],px,py,SPRITESIZE,SPRITESIZE,0xff);
GpSurfaceFlip(&gpDraw[nflip++]); /*flip surface*/
nflip &= 0x01; /*change page*/
}
}
/*************************************************************/
void Get_Direction(void)
{
/*check for keypresses*/
keypress=GpKeyGet();
if(keypress & GPC_VK_LEFT) px--;
if(keypress & GPC_VK_RIGHT) px++;
if(keypress & GPC_VK_UP) py--;
if(keypress & GPC_VK_DOWN) py++;
}
/*************************************************************/
void Side_Check(void)
/*stops player leaving area*/
{
if(px > 160) px=160;
if(px < 0) px=0;
if(py > 240) py=240;
if(py < 0) py=0;
}
/********************************************************************************************************/Thanks in advance
Kooli
