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gm

This commit is contained in:
olikraus 2016-11-20 15:46:11 +01:00
parent ccef7fa1b8
commit ca3b5ffc47
1 changed files with 21 additions and 6 deletions
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27
sys/sdl/golem_master/main.c
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@ -507,6 +507,7 @@ void map_Init(map_t *m)
m->vis_win_disp_pos_pix.v[0] = 0;
m->vis_win_disp_pos_pix.v[1] = 0;
/* the visible area in tiles is a little bit bigger than the pixel size of the area in pixel */
m->tmw = (m->pdw + 15)/16 + 1;
m->tmh = (m->pdh + 15)/16 + 1;
}
@ -607,10 +608,12 @@ void map_GetDisplayPosByTileMapPos(map_t *m, v16_t *dest_pos_pix, v16_t *src_til
v16_Add(dest_pos_pix, &(m->vis_win_disp_pos_pix)); /* add display offset */
}
/*x,y: tile position */
uint8_t map_IsTileVisible(map_t *m, uint16_t x, uint16_t y)
{
uint16_t ux, uy;
/* calculate the lower left corner (ux/uy) of the visible window in tiles */
ux = m->vwpt.v[0]+m->tmw;
ux &=0x0fff; /* wrap around mask for tiles */
uy = m->vwpt.v[1]+m->tmh;
@ -707,12 +710,10 @@ void gm_Draw(gm_t *gm, map_t *map, u8g2_t *u8g2)
{
v16_t dest_pos_pix;
map_GetDisplayPosByTileMapPos(map, &dest_pos_pix, &(gm->pt));
v16_Add(&dest_pos_pix, &(gm->gmop) );
v16_SubConstant(&dest_pos_pix, GM_OFFSET);
if ( map_IsTileVisible(map, gm->pt.v[0], gm->pt.v[1]) )
{
// puts("visible!");
@ -727,8 +728,13 @@ void gm_Draw(gm_t *gm, map_t *map, u8g2_t *u8g2)
}
}
void gm_Walk(gm_t *gm, map_t *map, uint8_t dir)
/* returns 1 if gm made a step */
int8_t gm_Walk(gm_t *gm, map_t *map, uint8_t dir)
{
uint8_t gm_made_step;
gm_made_step = 0; /* so far gm did not walk */
printf("input dir=%d, curr state = %d\n", dir, gm->state);
if ( gm->state == GM_STATE_CENTER )
{
@ -750,10 +756,16 @@ void gm_Walk(gm_t *gm, map_t *map, uint8_t dir)
{
uint8_t dest_tile;
/* try to walk into the requested direction */
v16_AddDir(&(gm->pt), dir, 1);
/* check whether the dest tile is valid. if not, go back */
dest_tile = map_GetTile(map, gm->pt.v[0], gm->pt.v[1]);
if ( dest_tile == 32 )
{
/* destination tile is valid, gm did a step */
gm_made_step = 1;
v16_SetByConstantByOneConstant(&(gm->gmop), GM_OFFSET);
v16_AddDir(&(gm->gmop), dir, (uint16_t)-16);
v16_SetByV16(&(gm->cwop), &(gm->twop));
@ -768,6 +780,7 @@ void gm_Walk(gm_t *gm, map_t *map, uint8_t dir)
}
}
}
return gm_made_step;
}
void gm_Step(gm_t *gm, map_t *map)
@ -910,8 +923,10 @@ int main(void)
if ( walk_direction >= 0 )
{
gm_Walk(&gm,&map, walk_direction);
obj_WalkTo(&spider, &map, &(gm.pt));
if ( gm_Walk(&gm,&map, walk_direction) != 0 )
{
obj_WalkTo(&spider, &map, &(gm.pt));
}
}