void lndr_gen_mv_matrix(Lander *lander)
{
mat4x4 ident, temp, trans;
mat4x4_identity(ident);
/*
float glx = 2 / glob_game.ppw;
float gly = 2 / glob_game.pph;
*/
/*
glx *= lander->x;
gly *= lander->y;
glx--;
gly--;
*/
float glx = lander->x;
float gly = lander->y;
mat4x4_scale_aniso(temp, ident, DEFAULT_SCALE, DEFAULT_SCALE, DEFAULT_SCALE);
mat4x4_rotate_Z(temp, temp, lander->rotation);
mat4x4_translate(trans, glx, gly, 0);
mat4x4_mul(ident, trans, temp);
mat4x4_transpose(lander->mvMatrix, ident);
}
void lndr_gen_jet_mv_matrix(Lander *lander)
{
if(lander->jetState == JS_OFF)
return;
float scale = 0;
if(lander->jetState == JS_INCREASING || lander->jetState == JS_DECREASING)
scale = lander->jetFrames / FLAME_GROW_RATE;
else if(lander->jetState == JS_ON)
{
if(lander->jetFrames < 10)
return;
lander->jetFrames = 0;
int rnd = rand() % 6 - 3;
scale = 1.0 + (0.07 * rnd);
}
mat4x4 ident, temp;
mat4x4_identity(ident);
mat4x4_translate_in_place(ident, 0, -0.3529412, 0);
mat4x4_scale_aniso(temp, ident, 1.0, scale, 1.0);
mat4x4_translate_in_place(temp, 0, 0.3529412, 0);
mat4x4_transpose(lander->jetMatrix, temp);
}
static void
recalculate_matrices(struct ball *b)
{
mat4x4_identity(b->model_matrix);
mat4x4_translate_in_place(b->model_matrix, b->x, b->y, b->z);
mat4x4_scale_aniso(b->model_matrix, b->model_matrix, SCALE_FACTOR, SCALE_FACTOR, SCALE_FACTOR);
mat4x4_invert(b->normal_matrix, b->model_matrix);
mat4x4_transpose(b->normal_matrix, b->normal_matrix);
}
void lndr_get_current_points(Lander *lander, GLfloat *buf)
{
int i;
for(i = 0; i < 112; i += 2)
{
GLfloat x = position_data[i];
GLfloat y = position_data[i + 1];
vec4 pt = {x, y, 0, 1};
mat4x4 mat;
mat4x4_transpose(mat, lander->mvMatrix);
vec4 out;
mat4x4_mul_vec4(out, mat, pt);
buf[i] = out[0];
buf[i + 1] = out[1];
//printf("%f %f\n", out[0], out[1]);
}
}
