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Animation.

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[originally from svn r5968]
This commit is contained in:
Simon Tatham
2005-06-17 17:32:28 +00:00
parent 347de40a2e
commit 32111ef901
1 changed files with 40 additions and 7 deletions
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47
flip.c
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@ -37,6 +37,7 @@ enum {
#define COORD(x) ( (x) * TILE_SIZE + BORDER )
#define FROMCOORD(x) ( ((x) - BORDER + TILE_SIZE) / TILE_SIZE - 1 )
#define ANIM_TIME 0.25F
#define FLASH_FRAME 0.07F
/*
@ -808,7 +809,8 @@ static void game_free_drawstate(game_drawstate *ds)
}
static void draw_tile(frontend *fe, game_drawstate *ds,
game_state *state, int x, int y, int tile)
game_state *state, int x, int y, int tile, int anim,
float animtime)
{
int w = ds->w, h = ds->h, wh = w * h;
int bx = x * TILE_SIZE + BORDER, by = y * TILE_SIZE + BORDER;
@ -817,7 +819,30 @@ static void draw_tile(frontend *fe, game_drawstate *ds,
clip(fe, bx+1, by+1, TILE_SIZE-1, TILE_SIZE-1);
draw_rect(fe, bx+1, by+1, TILE_SIZE-1, TILE_SIZE-1,
tile == 1 ? COL_WRONG : COL_RIGHT);
anim ? COL_BACKGROUND : tile & 1 ? COL_WRONG : COL_RIGHT);
if (anim) {
/*
* Draw a polygon indicating that the square is diagonally
* flipping over.
*/
int coords[8], colour;
coords[0] = bx + TILE_SIZE;
coords[1] = by;
coords[2] = bx + TILE_SIZE * animtime;
coords[3] = by + TILE_SIZE * animtime;
coords[4] = bx;
coords[5] = by + TILE_SIZE;
coords[6] = bx + TILE_SIZE - TILE_SIZE * animtime;
coords[7] = by + TILE_SIZE - TILE_SIZE * animtime;
colour = (tile & 1 ? COL_WRONG : COL_RIGHT);
if (animtime < 0.5)
colour = COL_WRONG + COL_RIGHT - colour;
draw_polygon(fe, coords, 4, TRUE, colour);
draw_polygon(fe, coords, 4, FALSE, COL_GRID);
}
/*
* Draw a little diagram in the tile which indicates which
@ -879,10 +904,13 @@ static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
else
flashframe = -1;
animtime /= ANIM_TIME; /* scale it so it goes from 0 to 1 */
for (i = 0; i < wh; i++) {
int x = i % w, y = i / w;
int fx, fy, fd;
int v = state->grid[i];
int vv;
if (flashframe >= 0) {
fx = (w+1)/2 - min(x+1, w-x);
@ -893,10 +921,15 @@ static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
else if (fd == flashframe - 1)
v &= ~1;
}
if (ds->tiles[i] != v) {
draw_tile(fe, ds, state, x, y, v);
ds->tiles[i] = v;
if (oldstate && state->grid[i] != oldstate->grid[i])
vv = 255; /* means `animated' */
else
vv = v;
if (ds->tiles[i] == 255 || vv == 255 || ds->tiles[i] != vv) {
draw_tile(fe, ds, state, x, y, v, vv == 255, animtime);
ds->tiles[i] = vv;
}
}
@ -913,7 +946,7 @@ static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
static float game_anim_length(game_state *oldstate, game_state *newstate,
int dir, game_ui *ui)
{
return 0.0F;
return ANIM_TIME;
}
static float game_flash_length(game_state *oldstate, game_state *newstate,