mirror of
https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 15:27:46 -04:00
102 lines
1.8 KiB
C++
102 lines
1.8 KiB
C++
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#include "app.h"
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struct Target
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{
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int sx,sy; // Onscreen coordinates
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int dx,dy; // Device values
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};
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struct Target Targ[2]=
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{
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{0,0, 0,0},
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{0,0, 0,0}
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};
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static int LightState=0;
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struct Calib
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{
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float ax,bx;
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float ay,by;
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};
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static struct Calib Cal={0.0f,0.0f,0.0f,0.0f};
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int LightCalReset()
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{
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LightState=0;
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memset(Targ,0,sizeof(Targ));
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Targ[0].sx=MainWidth >>1;
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Targ[0].sy=MainHeight>>1;
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Targ[1].sy=Targ[0].sy-MainHeight*61/160;
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Targ[1].sx=Targ[0].sx-MainWidth *61/160;
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return 0;
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}
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int LightCalUpdate()
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{
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int i=0;
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struct Target *pt=NULL;
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if (Inp.held[4]==1) LoopMode=3;
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if (Inp.held[8]==1)
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{
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i=LightState&1;
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pt=Targ+i;
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pt->dx=Inp.axis[0];
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pt->dy=Inp.axis[1];
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if (i==1)
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{
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int num=0,den=0;
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// rx= a + b*x - work out a and b:
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num=Targ[0].sx-Targ[1].sx;
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den=Targ[0].dx-Targ[1].dx;
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if (den) Cal.bx=(float)num/(float)den;
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Cal.ax=(float)Targ[0].sx-Cal.bx*(float)Targ[0].dx;
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num=Targ[0].sy-Targ[1].sy;
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den=Targ[0].dy-Targ[1].dy;
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if (den) Cal.by=(float)num/(float)den;
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Cal.ay=(float)Targ[0].sy-Cal.by*(float)Targ[0].dy;
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}
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LightState++;
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}
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return 0;
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}
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int LightCalRender()
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{
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int i=0;
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struct Target *pt=NULL;
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float fx=0.0f,fy=0.0f;
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DirectClear(0xffffff);
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WCHAR text[80]={0};
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wsprintfW(text,L"LightGun Calibration");
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FontSetColour(0x0000ff);
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FontText(text,240,48);
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wsprintfW(text,L"Start to quit, B to call InputLightCal");
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FontSetColour(0x004000);
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FontText(text,64,120);
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i=LightState&1;
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pt=Targ+i;
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FontSetColour(0);
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FontText(L"X", pt->sx-8, pt->sy-12);
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fx=Cal.ax+Cal.bx*(float)Inp.axis[0];
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fy=Cal.ay+Cal.by*(float)Inp.axis[1];
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FontSetColour(0xff0000);
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FontText(L"+", (int)fx-8,(int)fy-12);
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return 0;
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}
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