void vecNormalize(Vec v)
{
Flt len = vecLength(v);
if (len == 0.0) {
vecMake(0,0,1,v);
return;
}
len = 1.0 / len;
v[0] *= len;
v[1] *= len;
v[2] *= len;
}
/* --------------- Platform Class --------------- */
Platform::Platform(int width, int height, int x, int y, int tex)
{
body.type = RECTANGLE;
id = PLATFORM;
tex_id = tex;
vecMake(x,y,body.center);
vecCopy(body.center, prevPosition);
vecZero(velocity);
body.width = width;
body.height = height;
textureWidth = 15; // !!!!! need to merge with game's texture data !!!!!
textureHeight = 15;
horizontalTiles = width / textureWidth;
verticalTiles = height / textureHeight;
rgb[0] = 90;
rgb[1] = 140;
rgb[2] = 90;
}
void DrawGLScene5()
{
Vec v1,v2,v3,v4,v5,norm;
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
glLoadIdentity();
glLightfv(GL_LIGHT0, GL_POSITION,LightPosition);
glTranslatef(-1.5f,0.0f,-6.0f);
glRotatef(rtri,0.0f,1.0f,0.0f);
glColor3f(0.8f,0.0f,0.0f);
glBegin(GL_TRIANGLES);
//Notice the process here...
//1. build verts
//2. make 2 vectors
//3. find cross product. that's the normal
//4. normalize it to a length of 1
vecMake( 0.0f, 1.0f, 0.0f, v1);
vecMake(-1.0f,-1.0f, 1.0f, v2);
vecMake( 1.0f,-1.0f, 1.0f, v3);
vecSub(v2,v1,v4);
vecSub(v3,v1,v5);
vecCrossProduct(v4,v5,norm);
vecNormalize(norm);
glNormal3fv(norm);
glVertex3fv(v1);
glVertex3fv(v2);
glVertex3fv(v3);
vecMake( 0.0f, 1.0f, 0.0f,v1);
vecMake( 1.0f,-1.0f, 1.0f,v2);
vecMake( 1.0f,-1.0f,-1.0f,v3);
vecSub(v2,v1,v4);
vecSub(v3,v1,v5);
vecCrossProduct(v4,v5,norm);
vecNormalize(norm);
glNormal3fv(norm);
glVertex3fv(v1);
glVertex3fv(v2);
glVertex3fv(v3);
vecMake( 0.0f, 1.0f, 0.0f,v1);
vecMake( 1.0f,-1.0f,-1.0f,v2);
vecMake(-1.0f,-1.0f,-1.0f,v3);
vecSub(v2,v1,v4);
vecSub(v3,v1,v5);
vecCrossProduct(v4,v5,norm);
vecNormalize(norm);
glNormal3fv(norm);
glVertex3fv(v1);
glVertex3fv(v2);
glVertex3fv(v3);
vecMake( 0.0f, 1.0f, 0.0f,v1);
vecMake(-1.0f,-1.0f,-1.0f,v2);
vecMake(-1.0f,-1.0f, 1.0f,v3);
vecSub(v2,v1,v4);
vecSub(v3,v1,v5);
vecCrossProduct(v4,v5,norm);
vecNormalize(norm);
glNormal3fv(norm);
glVertex3fv(v1);
glVertex3fv(v2);
glVertex3fv(v3);
glEnd();
glLoadIdentity();
glLightfv(GL_LIGHT0, GL_POSITION, LightPosition);
glTranslatef(1.5f,0.0f,-7.0f);
glRotatef(rquad,1.0f,1.0f,1.0f);
glColor3f(0.0f,0.5f,1.0f);
glBegin(GL_QUADS);
//top
//notice the normal being set
glNormal3f( 0.0f, 1.0f, 0.0f);
glVertex3f( 1.0f, 1.0f,-1.0f);
glVertex3f(-1.0f, 1.0f,-1.0f);
glVertex3f(-1.0f, 1.0f, 1.0f);
glVertex3f( 1.0f, 1.0f, 1.0f);
// bottom of cube
glNormal3f( 0.0f, -1.0f, 0.0f);
glVertex3f( 1.0f,-1.0f, 1.0f);
glVertex3f(-1.0f,-1.0f, 1.0f);
glVertex3f(-1.0f,-1.0f,-1.0f);
glVertex3f( 1.0f,-1.0f,-1.0f);
// front of cube
glNormal3f( 0.0f, 0.0f, 1.0f);
glVertex3f( 1.0f, 1.0f, 1.0f);
glVertex3f(-1.0f, 1.0f, 1.0f);
glVertex3f(-1.0f,-1.0f, 1.0f);
glVertex3f( 1.0f,-1.0f, 1.0f);
// back of cube.
glNormal3f( 0.0f, 0.0f, -1.0f);
glVertex3f( 1.0f,-1.0f,-1.0f);
glVertex3f(-1.0f,-1.0f,-1.0f);
glVertex3f(-1.0f, 1.0f,-1.0f);
glVertex3f( 1.0f, 1.0f,-1.0f);
// left of cube
glNormal3f( -1.0f, 0.0f, 0.0f);
glVertex3f(-1.0f, 1.0f, 1.0f);
glVertex3f(-1.0f, 1.0f,-1.0f);
glVertex3f(-1.0f,-1.0f,-1.0f);
glVertex3f(-1.0f,-1.0f, 1.0f);
// Right of cube
glNormal3f( 1.0f, 0.0f, 0.0f);
glVertex3f( 1.0f, 1.0f,-1.0f);
glVertex3f( 1.0f, 1.0f, 1.0f);
glVertex3f( 1.0f,-1.0f, 1.0f);
glVertex3f( 1.0f,-1.0f,-1.0f);
glEnd();
rtri+=2.0f;
rquad-=1.0f;
}
void init_ship(void)
{
Object *o;
nobjects=0;
int ncolors = 0;
char ts[200], *ptr;
int nverts=0;
nfaces = 0;
Vec *vert = new Vec[3000];
iVec *face = new iVec[3000];
Vec *color = new Vec[3000];
FILE *fin = fopen("ship.txt", "r");
if (!fin) printf("file not open\n");
if (fin) {
while(1) {
if (feof(fin)) break;
fgets(ts,100,fin);
ptr = ts;
if (*ptr == 'v') {
ptr = findSpace(ptr)+1;
vert[nverts][0] = atof(ptr);// * 200.0;
ptr = findSpace(ptr)+1;
vert[nverts][1] = atof(ptr);// * 200.0;
ptr = findSpace(ptr)+1;
vert[nverts][2] = atof(ptr);// * 200.0;
nverts++;
continue;
}
if (*ptr == 'f') {
ptr = findSpace(ptr)+1;
face[nfaces][0] = atoi(ptr);
ptr = findSpace(ptr)+1;
face[nfaces][1] = atoi(ptr);
ptr = findSpace(ptr)+1;
face[nfaces][2] = atoi(ptr);
nfaces++;
}
if (*ptr == 'c') {
ptr = findSpace(ptr)+1;
color[ncolors][0] = atof(ptr);
ptr = findSpace(ptr)+1;
color[ncolors][1] = atof(ptr);
ptr = findSpace(ptr)+1;
color[ncolors][2] = atof(ptr);
ncolors++;
}
}
fclose(fin);
}
//Vec mv;
for (int i=0; i<nfaces; i++) {
o = &object[nobjects];
o->type = TYPE_TRIANGLE;
int f;
f=face[i][0]-1; vecMake(vert[f][0],vert[f][1],vert[f][2],o->tri[1]);
f=face[i][1]-1; vecMake(vert[f][0],vert[f][1],vert[f][2],o->tri[0]);
f=face[i][2]-1; vecMake(vert[f][0],vert[f][1],vert[f][2],o->tri[2]);
vecMake(color[i][0],color[i][1],color[i][2], o->color);
//vecMake(0.0, 0.0, 0.0, mv);
for (int j=0; j<3; j++) {
//move(mv, o->tri[j]);
scale(0.45, o->tri[j]);
}
getTriangleNormal(o->tri, o->norm);
//change the color based on normal
//if (o->norm[2] > 0.5 || o->norm[2] < -0.5) {
// vecMake(.1,.1,.1, o->color);
//}
nobjects++;
}
delete vert;
delete face;
delete color;
}
