GRRLIB/examples/3D_LightDiffuse/source/main.c

/*===========================================
    NoNameNo
    Simple Diffuse Light Sample Code
    With 3 Light sources.

Note : This torus hardcoded obj will be removed
when we will have nice primitive functions.
============================================*/
#include <grrlib.h>

#include <stdlib.h>
#include <math.h>
#include <malloc.h>
#include <wiiuse/wpad.h>

#include "gfx/font.h"

extern Mtx _GRR_view;


typedef  struct GRRLIB_3dObj {
    int       NbFace;
    guVector  *Pos;
    guVector  *Tex;
    guVector  *Nrm;
    int  *FacPos;
    int  *FacTex;
    int  *FacNrm;
} GRRLIB_3dObj;

#include "torus.h"


void GRRLIB_Draw3dObj(GRRLIB_3dObj obj, u32 col, bool tex, bool norm) {
    int i;
    GX_Begin(GX_TRIANGLES, GX_VTXFMT0, obj.NbFace*3);
    for(i=0;i<obj.NbFace*3;i+=3) {
        GX_Position3f32(obj.Pos[obj.FacPos[i]-1].x,obj.Pos[obj.FacPos[i]-1].y,-obj.Pos[obj.FacPos[i]-1].z);
        if(col) GX_Color1u32   (col);
        if(norm) GX_Normal3f32(obj.Nrm[obj.FacNrm[i]-1].x,obj.Nrm[obj.FacNrm[i]-1].y,-obj.Nrm[obj.FacNrm[i]-1].z);
        if(tex) GX_TexCoord2f32(obj.Tex[obj.FacTex[i]-1].x, obj.Tex[obj.FacTex[i]-1].y);

        GX_Position3f32(obj.Pos[obj.FacPos[i+1]-1].x,obj.Pos[obj.FacPos[i+1]-1].y,-obj.Pos[obj.FacPos[i+1]-1].z);
        if(col) GX_Color1u32   (col);
        if(norm) GX_Normal3f32(obj.Nrm[obj.FacNrm[i+1]-1].x,obj.Nrm[obj.FacNrm[i+1]-1].y,-obj.Nrm[obj.FacNrm[i+1]-1].z);
        if(tex) GX_TexCoord2f32(obj.Tex[obj.FacTex[i+1]-1].x, obj.Tex[obj.FacTex[i+1]-1].y);

        GX_Position3f32(obj.Pos[obj.FacPos[i+2]-1].x,obj.Pos[obj.FacPos[i+2]-1].y,-obj.Pos[obj.FacPos[i+2]-1].z);
        if(col) GX_Color1u32   (col);
        if(norm) GX_Normal3f32(obj.Nrm[obj.FacNrm[i+2]-1].x,obj.Nrm[obj.FacNrm[i+2]-1].y,-obj.Nrm[obj.FacNrm[i+2]-1].z);
        if(tex) GX_TexCoord2f32(obj.Tex[obj.FacTex[i+2]-1].x, obj.Tex[obj.FacTex[i+2]-1].y);
    }
    GX_End();
}

int main() {
    float a=0;
    u8 Amb=0x80;
    f32 zlight=0.0f;

    GRRLIB_Init();
    WPAD_Init();

    Obj3dInittorus();

    GRRLIB_texImg *tex_font = GRRLIB_LoadTexture(font);
    GRRLIB_InitTileSet(tex_font, 16, 16, 32);

    GRRLIB_Settings.antialias = true;

    GRRLIB_SetBackgroundColour(0x00, 0x00, 0x00, 0xFF);
    GRRLIB_Camera3dSettings(0.0f,0.0f,13.0f, 0,1,0, 0,0,0);

    while(1) {
        GRRLIB_2dMode();
        WPAD_ScanPads();
        if(WPAD_ButtonsDown(0) & WPAD_BUTTON_HOME) exit(0);
        if(WPAD_ButtonsHeld(0) & WPAD_BUTTON_PLUS) {if(Amb<255) Amb++; }
        if(WPAD_ButtonsHeld(0) & WPAD_BUTTON_MINUS) {if(Amb>0) Amb--; }
        if(WPAD_ButtonsHeld(0) & WPAD_BUTTON_A) {zlight++; }
        if(WPAD_ButtonsHeld(0) & WPAD_BUTTON_B) {zlight--; }


        GRRLIB_3dMode(0.1,1000,45,0,0,1);
        GRRLIB_ObjectView(0,0,0, a,a*2,a*3, 3,3,3);

        GRRLIB_InitLight(GX_LIGHT0, (guVector){-6, 0, zlight}, 0xFF0000FF);
        GRRLIB_InitLight(GX_LIGHT1, (guVector){ 6, 0, zlight}, 0x00FF00FF);
        GRRLIB_InitLight(GX_LIGHT2, (guVector){ 0,-6, zlight}, 0x0000FFFF);

        GRRLIB_LightSwitch(GX_LIGHT0|GX_LIGHT1|GX_LIGHT2,RGBA(Amb,Amb,Amb,0xFF),0x808080FF,0);

        GRRLIB_Draw3dObj(torus,0,0,1);

        a+=0.5f;

        GRRLIB_LightOff();
        // Switch To 2D Mode to display text
        GRRLIB_2dMode();
        GRRLIB_Printf((640-(16*35))/2, 20, tex_font, 0xFFFFFFFF, 1, "(PLUS / MINUS) AMBIENT = 0X%02X%02X%02XFF",Amb,Amb,Amb,Amb);
        GRRLIB_Printf((640-(16*35))/2, 36, tex_font, 0xFFFFFFFF, 1, "        (A / B) ZLIGHT = %f              ",zlight);

        GRRLIB_Render();
    }
    GRRLIB_Exit(); // Be a good boy, clear the memory allocated by GRRLIB
    GRRLIB_FreeTexture(tex_font);

    exit(0);
}