void translate_coords(SDL_Surface * canvas,int angle)
{
int a,b;
switch (angle)
{
case 90:
translate_xy(canvas,right_arm_x,right_arm_y,&a,&b,90);
right_arm_x=a;
right_arm_y=b;
translate_xy(canvas,left_arm_x,left_arm_y,&a,&b,90);
left_arm_x=a;
left_arm_y=b;
break;
case 180:
right_arm_x=canvas->w-1-right_arm_x;
right_arm_y=canvas->h-1-right_arm_y;
left_arm_x=canvas->w-1-left_arm_x;
left_arm_y=canvas->h-1-left_arm_y;
break;
case 270:
translate_xy(canvas,right_arm_x,right_arm_y,&a,&b,270);
right_arm_x=a;
right_arm_y=b;
translate_xy(canvas,left_arm_x, left_arm_y, &a, &b, 270);
left_arm_x=a;
left_arm_y=b;
break;
}
}
void fold_release(magic_api * api, int which,
SDL_Surface * canvas, SDL_Surface * snapshot,
int x, int y, SDL_Rect * update_rect)
{
int a,b;
SDL_Surface * temp, *temp2;
x=fold_x;
y=fold_y;
fold_ox=fold_oy=0;
SDL_BlitSurface(snapshot, 0, canvas, 0);
switch (corner)
{
case 1:
translate_xy(canvas,x,y,&a,&b,90);
translate_coords(canvas,90);
temp=rotate(api, canvas, 90);
fold_draw (api, which, temp, snapshot, a, b,update_rect);
temp2=rotate(api,temp,270);
SDL_BlitSurface(temp2,0,canvas,0);
SDL_FreeSurface(temp);
SDL_FreeSurface(temp2);
break;
case 2:
fold_draw (api, which, canvas, snapshot, x,y,update_rect);
break;
case 3:
translate_xy(canvas,x,y,&a,&b,270);
translate_coords(canvas,270);
temp=rotate(api, canvas, 270);
fold_draw (api, which, temp, snapshot, a, b,update_rect);
temp2=rotate(api,temp,90);
SDL_BlitSurface(temp2,0,canvas,0);
SDL_FreeSurface(temp);
SDL_FreeSurface(temp2);
break;
case 4:
translate_xy(canvas,x,y,&a,&b,180);
translate_coords(canvas,180);
temp=rotate(api, canvas, 180);
fold_draw (api, which, temp, snapshot, a, b,update_rect);
temp2=rotate(api,temp,180);
SDL_BlitSurface(temp2,0,canvas,0);
SDL_FreeSurface (temp);
SDL_FreeSurface (temp2);
break;
}
update_rect->x=update_rect->y=0;
update_rect->w=canvas->w;
update_rect->h=canvas->h;
api->playsound(fold_snd, (x * 255) / canvas->w, 255);
}
SDL_Surface * rotate(magic_api * api, SDL_Surface * canvas, int angle)
{
SDL_Surface * temp;
int x,y;
int a,b;
if (angle==180)
temp=SDL_CreateRGBSurface(SDL_ANYFORMAT, canvas->w, canvas->h, canvas->format->BitsPerPixel,
canvas->format->Rmask, canvas->format->Gmask, canvas->format->Bmask, canvas->format->Amask);
else
temp=SDL_CreateRGBSurface(SDL_ANYFORMAT, canvas->h, canvas->w, canvas->format->BitsPerPixel,
canvas->format->Rmask, canvas->format->Gmask, canvas->format->Bmask, canvas->format->Amask);
switch (angle)
{
case 90:
for (x=0; x<canvas->w; x++)
for (y=0; y<canvas->h; y++)
{
translate_xy(canvas,x,y,&a,&b,90);
api->putpixel(temp,a,b,api->getpixel(canvas, x, y));
}
break;
case 180:
// printf("%i, %i\n",temp,canvas);
for (x=0; x<canvas->w; x++)
for (y=0; y<canvas->h; y++)
{
translate_xy(canvas,x,y,&a,&b,180);
api->putpixel(temp,a,b,api->getpixel(canvas, x, y));
}
break;
case 270:
for (x=0; x<canvas->w; x++)
for (y=0; y<canvas->h; y++)
{
translate_xy(canvas,x,y,&a,&b,270);
api->putpixel(temp,a,b,api->getpixel(canvas, x, y));
}
break;
}
return temp;
}
/* Don't bother to translate the cbox. */
int
gx_path_translate(gx_path *ppath, fixed dx, fixed dy)
{ segment *pseg;
#define translate_xy(pt)\
pt.x += dx, pt.y += dy
translate_xy(ppath->bbox.p);
translate_xy(ppath->bbox.q);
translate_xy(ppath->position);
pseg = (segment *)(ppath->first_subpath);
while ( pseg )
{ switch ( pseg->type )
{
case s_curve:
{ curve_segment *pc = (curve_segment *)pseg;
translate_xy(pc->p1);
translate_xy(pc->p2);
}
default:
translate_xy(pseg->pt);
}
pseg = pseg->next;
}
return 0;
}
/**
* @brief Updates the y position of the entity if it wants to move
* (smooth version).
*/
void StraightMovement::update_smooth_y() {
if (y_move != 0) { // The entity wants to move on y.
// By default, next_move_date_y will be incremented by y_delay,
// unless we modify the movement in such a way that the
// y speed needs to be fixed.
uint32_t next_move_date_y_increment = y_delay;
if (!test_collision_with_obstacles(0, y_move)) {
translate_y(y_move); // Make the move.
if (x_move != 0 && test_collision_with_obstacles(x_move, 0)) {
// If there is also an x move, and if this x move is illegal,
// we still allow the y move and we give it all the speed.
next_move_date_y_increment = (int) (1000.0 / get_speed());
}
}
else {
if (x_move == 0) {
// The move on y is not possible and there is no x move:
// let's try to add a move on x to make a diagonal move,
// but only if the wall is really diagonal: otherwise, the hero
// could bypass sensors.
if (!test_collision_with_obstacles(1, y_move) // Can move diagonally and:
&& (test_collision_with_obstacles(-1, 0) || // the wall is really diagonal
test_collision_with_obstacles(1, 0)) // or we don't have a choice anyway.
) {
translate_xy(1, y_move);
next_move_date_y_increment = (int) (y_delay * Geometry::SQRT_2); // Fix the speed.
}
else if (!test_collision_with_obstacles(-1, y_move)
&& (test_collision_with_obstacles(1, 0) ||
test_collision_with_obstacles(-1, 0))
) {
translate_xy(-1, y_move);
next_move_date_y_increment = (int) (y_delay * Geometry::SQRT_2);
}
else {
// The diagonal moves didn't work either.
// So we look for a place (up to 8 pixels on the left and on the right)
// where the required move would be allowed.
// If we find a such place, then we move towards this place.
bool moved = false;
for (int i = 1; i <= 8 && !moved; i++) {
if (!test_collision_with_obstacles(i, y_move) && !test_collision_with_obstacles(1, 0)) {
translate_x(1);
moved = true;
}
else if (!test_collision_with_obstacles(-i, y_move) && !test_collision_with_obstacles(-1, 0)) {
translate_x(-1);
moved = true;
}
}
}
}
else {
// The move on y is not possible, but there is also a horizontal move.
if (!test_collision_with_obstacles(x_move, y_move)) {
// This case is only necessary in narrow diagonal passages.
translate_xy(x_move, y_move);
next_move_date_x += x_delay; // Delay the next update_smooth_x() since we just replaced it.
}
else if (!test_collision_with_obstacles(x_move, 0)) {
// Do the horizontal move right now, don't wait uselessly.
update_x();
}
}
}
next_move_date_y += next_move_date_y_increment;
}
}
/**
* \brief Moves the object.
* \param dxy number of pixel of the move on x and y
*/
void Movement::translate_xy(const Point& dxy) {
translate_xy(dxy.x, dxy.y);
}
/**
* \brief Moves the object on y.
* \param dy number of pixels of the move
*/
void Movement::translate_y(int dy) {
translate_xy(0, dy);
}
/**
* \brief Moves the object on x.
* \param dx number of pixels of the move
*/
void Movement::translate_x(int dx) {
translate_xy(dx, 0);
}
/**
* @brief Moves the object.
* @param dxy number of pixel of the move on x and y
* (the size of the rectangle is ignored)
*/
void Movement::translate_xy(const Rectangle &dxy) {
translate_xy(dxy.get_x(), dxy.get_y());
}
/**
* \brief Updates the x position of the entity if it wants to move
* (smooth version).
*/
void StraightMovement::update_smooth_x() {
if (x_move != 0) { // The entity wants to move on x.
// By default, next_move_date_x will be incremented by x_delay,
// unless we modify below the movement in such a way that the
// x speed needs to be fixed.
uint32_t next_move_date_x_increment = x_delay;
if (!test_collision_with_obstacles(x_move, 0)) {
translate_x(x_move); // Make the move.
if (y_move != 0 && test_collision_with_obstacles(0, y_move)) {
// If there is also a y move, and if this y move is illegal,
// we still allow the x move and we give it all the speed.
next_move_date_x_increment = (int) (1000.0 / get_speed());
}
}
else {
if (y_move == 0) {
// The move on x is not possible and there is no y move:
// let's try to add a move on y to make a diagonal move,
// but only if the wall is really diagonal: otherwise, the hero
// could bypass sensors.
if (!test_collision_with_obstacles(x_move, 1) // Can move diagonally and:
&& (test_collision_with_obstacles(0, -1) || // the wall is really diagonal
test_collision_with_obstacles(0, 1)) // or we don't have a choice anyway.
) {
translate_xy(x_move, 1);
next_move_date_x_increment = (int) (x_delay * Geometry::SQRT_2); // Fix the speed.
}
else if (!test_collision_with_obstacles(x_move, -1)
&& (test_collision_with_obstacles(0, 1) ||
test_collision_with_obstacles(0, -1))
) {
translate_xy(x_move, -1);
next_move_date_x_increment = (int) (x_delay * Geometry::SQRT_2);
}
else {
// The diagonal moves didn't work either.
// So we look for a place (up to 8 pixels up and down)
// where the required move would be allowed.
// If we find a such place, then we move towards this place.
bool moved = false;
for (int i = 1; i <= 8 && !moved; i++) {
if (!test_collision_with_obstacles(x_move, i) && !test_collision_with_obstacles(0, 1)) {
translate_y(1);
moved = true;
}
else if (!test_collision_with_obstacles(x_move, -i) && !test_collision_with_obstacles(0, -1)) {
translate_y(-1);
moved = true;
}
}
}
}
else {
// The move on x is not possible, but there is also a vertical move.
if (!test_collision_with_obstacles(0, y_move)) {
// Do the vertical move right now, don't wait uselessly.
update_y();
}
else {
// The x move is not possible and neither is the y move.
// Last chance: do both x and y moves in one step.
// This case is only necessary in narrow diagonal passages.
// We do it as a last resort, because we want separate x and y
// steps whenever possible: otherwise, the hero could bypass sensors.
if (!test_collision_with_obstacles(x_move, y_move)) {
translate_xy(x_move, y_move);
next_move_date_y += y_delay; // Delay the next update_smooth_y() since we just replaced it.
}
}
}
}
next_move_date_x += next_move_date_x_increment;
}
}
/**
* @brief Updates the y position of the entity if it wants to move
* (smooth version).
*/
void StraightMovement::update_smooth_y() {
if (y_move != 0) { // the entity wants to move on y
// by default, next_move_date_y will be incremented by y_delay,
// unless we modify the movement in such a way that the
// y speed needs to be fixed
uint32_t next_move_date_y_increment = y_delay;
if (!test_collision_with_obstacles(0, y_move)) {
translate_y(y_move); // make the move
if (x_move != 0 && test_collision_with_obstacles(x_move, 0)) {
// if there is also an x move, and if this x move is illegal,
// we still allow the y move and we give it all the speed
next_move_date_y_increment = (int) (1000.0 / get_speed());
}
}
else {
if (x_move == 0) {
// The move on y is not possible: let's try
// to add a move on x to make a diagonal move.
if (!test_collision_with_obstacles(1, y_move)
&& test_collision_with_obstacles(-1, 0)) {
translate_xy(1, y_move);
next_move_date_y_increment = (int) (y_delay * Geometry::SQRT_2); // fix the speed
}
else if (!test_collision_with_obstacles(-1, y_move)
&& test_collision_with_obstacles(1, 0)) {
translate_xy(-1, y_move);
next_move_date_y_increment = (int) (y_delay * Geometry::SQRT_2);
}
else {
/* The diagonal moves didn't work either.
* So we look for a place (up to 8 pixels on the left and on the right)
* where the required move would be allowed.
* If we find a such place, then we move towards this place.
*/
bool moved = false;
for (int i = 1; i <= 8 && !moved; i++) {
if (!test_collision_with_obstacles(i, y_move) && !test_collision_with_obstacles(1, 0)) {
translate_x(1);
moved = true;
}
else if (!test_collision_with_obstacles(-i, y_move) && !test_collision_with_obstacles(-1, 0)) {
translate_x(-1);
moved = true;
}
}
}
}
else {
// no attractive place was found, but there is a horizontal move
if (!test_collision_with_obstacles(x_move, 0)) {
// do the horizontal move right now, don't wait uselessly
update_x();
}
}
}
next_move_date_y += next_move_date_y_increment;
}
}