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/* video.c - Copyright (C) 2001-2002 Jacob Kroon, see COPYING for details */
#include <stdlib.h>
#include <SDL_video.h>
#include <SDL_mouse.h>
#include <SDL_events.h>
#include <SDL_timer.h>
#include "video.h"
#include "tuxpuck.h"
/* defines */
#define MAX_RECTS 500
/* externals */
extern SDL_Surface *loadPNG(Uint8 *, Uint32 *);
extern SDL_Surface *loadJPG(Uint8 *, Uint32 *);
extern SDL_Surface *zoomSurface(SDL_Surface *, float);
/* statics */
static SDL_Surface *_screen = NULL, *_background = NULL;
static SDL_Rect *_dirty_rect = NULL;
static Uint32 _no_dirty_rects = 0;
/* functions */
int video_init(void)
{
if ((_screen =
SDL_SetVideoMode(SCREEN_W, SCREEN_H, 0,
SDL_SWSURFACE | SDL_HWSURFACE)) < 0)
return -1;
SDL_WM_SetCaption("TuxPuck v" _VERSION, "TuxPuck v" _VERSION);
SDL_ShowCursor(0);
_dirty_rect = (SDL_Rect *) malloc(MAX_RECTS * sizeof(SDL_Rect));
return 0;
}
void video_deinit(void)
{
if (_background != NULL)
SDL_FreeSurface(_background);
free(_dirty_rect);
}
SDL_Surface *video_create_png_surface(Uint8 * data, Uint32 * memcounter)
{
return loadPNG(data, memcounter);
}
SDL_Surface *video_create_jpg_surface(Uint8 * data, Uint32 * memcounter)
{
return loadJPG(data, memcounter);
}
SDL_Surface *video_scale_surface(SDL_Surface * surface, float scale)
{
return zoomSurface(surface, scale);
}
void video_update(void)
{
SDL_UpdateRects(_screen, _no_dirty_rects, _dirty_rect);
_no_dirty_rects = 0;
}
void video_erase(SDL_Rect * rect)
{
SDL_BlitSurface(_background, rect, _screen, rect);
_dirty_rect[_no_dirty_rects++] = *rect;
}
void video_set_alpha(SDL_Surface * surface, Uint8 alpha)
{
if (alpha == 255)
SDL_SetAlpha(surface, 0, 0);
else
SDL_SetAlpha(surface, SDL_SRCALPHA | SDL_RLEACCEL, alpha);
}
void video_fill(Uint32 color, Uint8 alpha, SDL_Rect * rect)
{
SDL_Surface *fill = NULL;
SDL_Rect rect2;
if (rect == NULL) {
rect2.x = rect2.y = 0;
rect2.w = SCREEN_W;
rect2.h = SCREEN_H;
rect = &rect2;
}
fill =
SDL_CreateRGBSurface(SDL_SWSURFACE, rect->w, rect->h, 16, 0, 0, 0, 0);
SDL_FillRect(fill, NULL, color);
video_set_alpha(fill, alpha);
video_blit(fill, NULL, rect);
SDL_FreeSurface(fill);
}
void video_blit(SDL_Surface * surface, SDL_Rect * src, SDL_Rect * dst)
{
SDL_Rect own_rect;
if (!dst) {
own_rect.x = own_rect.y = 0;
dst = &own_rect;
}
SDL_BlitSurface(surface, src, _screen, dst);
_dirty_rect[_no_dirty_rects++] = *dst;
}
void video_restore(void)
{
SDL_BlitSurface(_background, NULL, _screen, NULL);
_dirty_rect[0].x = _dirty_rect[0].y = 0;
_dirty_rect[0].w = SCREEN_W;
_dirty_rect[0].h = SCREEN_H;
_no_dirty_rects = 1;
}
void video_save(void)
{
if (_background != NULL)
SDL_FreeSurface(_background);
_background =
SDL_ConvertSurface(_screen, _screen->format,
SDL_SWSURFACE | SDL_HWSURFACE);
}
SDL_Surface *video_duplicate(void)
{
SDL_Surface *screen = NULL;
screen =
SDL_ConvertSurface(_screen, _screen->format,
SDL_SWSURFACE | SDL_HWSURFACE);
return screen;
}
void video_toggle_fullscreen(void)
{
SDL_WM_ToggleFullScreen(_screen);
}
Uint32 video_map_rgb(Uint8 r, Uint8 g, Uint8 b)
{
return SDL_MapRGB(_screen->format, r, g, b);
}
/* effects */
void video_box_up(SDL_Surface * surface, Uint32 time_limit)
{
Uint8 loop = 1;
Uint32 elapsed_time = 0;
SDL_Event event;
SDL_Rect rect = { SCREEN_W / 2 + 1, SCREEN_H / 2 + 1, 0, 0 };
float time_ratio;
Sint16 temp_x, temp_y;
Timer *timer = NULL;
timer = timer_create();
timer_reset(timer);
while (loop && elapsed_time < time_limit) {
while (SDL_PollEvent(&event))
if (event.type == SDL_KEYDOWN || event.type == SDL_MOUSEBUTTONDOWN)
loop = 0;
timer_update(timer);
elapsed_time = timer_elapsed(timer);
time_ratio = (float) elapsed_time / time_limit;
temp_x = rect.x;
temp_y = rect.y;
rect.x = SCREEN_W / 2.0 * (1.0 - time_ratio) + 1;
rect.w = temp_x - rect.x + 1;
rect.y = SCREEN_H / 2.0 * (1.0 - time_ratio) + 1;
rect.h = time_ratio * SCREEN_H;
video_blit(surface, &rect, &rect);
rect.x = SCREEN_W - rect.x;
video_blit(surface, &rect, &rect);
rect.x = SCREEN_W - rect.x;
rect.w = time_ratio * SCREEN_W;
rect.h = temp_y - rect.y + 1;
video_blit(surface, &rect, &rect);
rect.y = SCREEN_H - rect.y;
rect.w += temp_x - rect.x;
video_blit(surface, &rect, &rect);
rect.y = SCREEN_H - rect.y;
SDL_Delay(SLEEP);
video_update();
}
video_blit(surface, NULL, NULL);
video_update();
timer_free(timer);
}
void video_fade(SDL_Surface * to, Uint32 time_limit)
{
SDL_Event event;
Timer *timer = NULL;
float alpha = 0.0;
Uint32 elapsed_time = 0;
Uint8 loop = 1;
timer = timer_create();
timer_reset(timer);
while (loop) {
while (SDL_PollEvent(&event))
if (event.type == SDL_KEYDOWN || event.type == SDL_MOUSEBUTTONDOWN)
loop = 0;
timer_update(timer);
elapsed_time = timer_elapsed(timer);
alpha = (float) elapsed_time / time_limit;
if (alpha > 1.0) {
alpha = 1.0;
loop = 0;
}
video_set_alpha(to, (Uint8) (alpha * 255));
video_restore();
video_blit(to, NULL, NULL);
video_update();
SDL_Delay(SLEEP);
}
timer_free(timer);
video_set_alpha(to, 255);
video_blit(to, NULL, NULL);
video_update();
}
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