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Redraws during undo in Sixteen had been broken by my faffing about

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with last_movement_sense (which was necessary to fix the animation
when the grid was only 2 squares wide in either dimension). Movement
sense is now inverted if the move being animated is an undo.

[originally from svn r4191]
This commit is contained in:
Simon Tatham
2004-05-03 12:12:30 +00:00
parent ccbf3ca6f1
commit 2a1b7e0dd3
1 changed files with 79 additions and 90 deletions
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169
sixteen.c
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@ -536,7 +536,7 @@ static void draw_arrow(frontend *fe, int x, int y, int xdx, int xdy)
void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate, void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
game_state *state, float animtime, float flashtime) game_state *state, float animtime, float flashtime)
{ {
int i, pass, bgcolour; int i, bgcolour;
if (flashtime > 0) { if (flashtime > 0) {
int frame = (int)(flashtime / FLASH_FRAME); int frame = (int)(flashtime / FLASH_FRAME);
@ -587,111 +587,100 @@ void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
} }
/* /*
* Now draw each tile. We do this in two passes to make * Now draw each tile.
* animation easy.
*/ */
clip(fe, COORD(0), COORD(0), TILE_SIZE*state->w, TILE_SIZE*state->h); clip(fe, COORD(0), COORD(0), TILE_SIZE*state->w, TILE_SIZE*state->h);
for (pass = 0; pass < 2; pass++) { for (i = 0; i < state->n; i++) {
for (i = 0; i < state->n; i++) { int t, t0;
int t, t0; /*
/* * Figure out what should be displayed at this
* Figure out what should be displayed at this * location. It's either a simple tile, or it's a
* location. It's either a simple tile, or it's a * transition between two tiles (in which case we say
* transition between two tiles (in which case we say * -1 because it must always be drawn).
* -1 because it must always be drawn). */
*/
if (oldstate && oldstate->tiles[i] != state->tiles[i]) if (oldstate && oldstate->tiles[i] != state->tiles[i])
t = -1; t = -1;
else else
t = state->tiles[i]; t = state->tiles[i];
t0 = t; t0 = t;
if (ds->bgcolour != bgcolour || /* always redraw when flashing */ if (ds->bgcolour != bgcolour || /* always redraw when flashing */
ds->tiles[i] != t || ds->tiles[i] == -1 || t == -1) { ds->tiles[i] != t || ds->tiles[i] == -1 || t == -1) {
int x, y, x2, y2; int x, y, x2, y2;
/* /*
* Figure out what to _actually_ draw, and where to * Figure out what to _actually_ draw, and where to
* draw it. * draw it.
*/ */
if (t == -1) { if (t == -1) {
int x0, y0, x1, y1, dx, dy; int x0, y0, x1, y1, dx, dy;
int j; int j;
float c;
int sense;
/* if (oldstate && state->movecount < oldstate->movecount)
* On the first pass, just blank the tile. sense = -oldstate->last_movement_sense;
*/ else
if (pass == 0) { sense = state->last_movement_sense;
x = COORD(X(state, i));
y = COORD(Y(state, i));
x2 = y2 = -1;
t = 0;
} else {
float c;
t = state->tiles[i]; t = state->tiles[i];
/* /*
* FIXME: must be prepared to draw a double * FIXME: must be prepared to draw a double
* tile in some situations. * tile in some situations.
*/ */
/* /*
* Find the coordinates of this tile in the old and * Find the coordinates of this tile in the old and
* new states. * new states.
*/ */
x1 = COORD(X(state, i)); x1 = COORD(X(state, i));
y1 = COORD(Y(state, i)); y1 = COORD(Y(state, i));
for (j = 0; j < oldstate->n; j++) for (j = 0; j < oldstate->n; j++)
if (oldstate->tiles[j] == state->tiles[i]) if (oldstate->tiles[j] == state->tiles[i])
break; break;
assert(j < oldstate->n); assert(j < oldstate->n);
x0 = COORD(X(state, j)); x0 = COORD(X(state, j));
y0 = COORD(Y(state, j)); y0 = COORD(Y(state, j));
dx = (x1 - x0); dx = (x1 - x0);
if (dx != 0 && if (dx != 0 &&
dx != TILE_SIZE * state->last_movement_sense) { dx != TILE_SIZE * sense) {
dx = (dx < 0 ? dx + TILE_SIZE * state->w : dx = (dx < 0 ? dx + TILE_SIZE * state->w :
dx - TILE_SIZE * state->w); dx - TILE_SIZE * state->w);
assert(abs(dx) == TILE_SIZE); assert(abs(dx) == TILE_SIZE);
} }
dy = (y1 - y0); dy = (y1 - y0);
if (dy != 0 && if (dy != 0 &&
dy != TILE_SIZE * state->last_movement_sense) { dy != TILE_SIZE * sense) {
dy = (dy < 0 ? dy + TILE_SIZE * state->h : dy = (dy < 0 ? dy + TILE_SIZE * state->h :
dy - TILE_SIZE * state->h); dy - TILE_SIZE * state->h);
assert(abs(dy) == TILE_SIZE); assert(abs(dy) == TILE_SIZE);
} }
c = (animtime / ANIM_TIME); c = (animtime / ANIM_TIME);
if (c < 0.0F) c = 0.0F; if (c < 0.0F) c = 0.0F;
if (c > 1.0F) c = 1.0F; if (c > 1.0F) c = 1.0F;
x = x0 + (int)(c * dx); x = x0 + (int)(c * dx);
y = y0 + (int)(c * dy); y = y0 + (int)(c * dy);
x2 = x1 - dx + (int)(c * dx); x2 = x1 - dx + (int)(c * dx);
y2 = y1 - dy + (int)(c * dy); y2 = y1 - dy + (int)(c * dy);
} } else {
x = COORD(X(state, i));
y = COORD(Y(state, i));
x2 = y2 = -1;
}
} else { draw_tile(fe, state, x, y, t, bgcolour);
if (pass == 0) if (x2 != -1 || y2 != -1)
continue; draw_tile(fe, state, x2, y2, t, bgcolour);
x = COORD(X(state, i)); }
y = COORD(Y(state, i)); ds->tiles[i] = t0;
x2 = y2 = -1;
}
draw_tile(fe, state, x, y, t, bgcolour);
if (x2 != -1 || y2 != -1)
draw_tile(fe, state, x2, y2, t, bgcolour);
}
ds->tiles[i] = t0;
}
} }
unclip(fe); unclip(fe);