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Dual tile layers

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stevenhowes
2021-06-26 19:45:08 +01:00
parent 390ee6ed34
commit 464e19c282
7 changed files with 111 additions and 8 deletions
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!TheEsc/c/Mission2
+24 -3
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@@ -21,9 +21,12 @@ extern _kernel_swi_regs outreg;
// map[0] is the 'master', [1] and [2] represents what is currently
// believed to be displayed in the corresponding (+1) screen buffer
// and we run a compare to see if re-drawing is needed. 0xFF is used
// for a re-draw being required (so it's set on the tile under the player
// for a re-draw being required (so it's set on the tile under the player)
// _overlay is used for the second layer on of tiles (optional)
unsigned char map[3][TILESX][TILESY];
unsigned char fullmap[10000];
unsigned char map_overlay[3][TILESX][TILESY];
unsigned char fullmap[10000*2];
unsigned char areaname[13];
@@ -364,6 +367,17 @@ void game2_fillmap(int xoffset, int yoffset)
memcpy(map[0][7],fullmap+yoffset+(xoffset*100)+700,10);
memcpy(map[0][8],fullmap+yoffset+(xoffset*100)+800,10);
memcpy(map[0][9],fullmap+yoffset+(xoffset*100)+900,10);
memcpy(map_overlay[0][0],fullmap+yoffset+(xoffset*100)+10000,10);
memcpy(map_overlay[0][1],fullmap+yoffset+(xoffset*100)+100+10000,10);
memcpy(map_overlay[0][2],fullmap+yoffset+(xoffset*100)+200+10000,10);
memcpy(map_overlay[0][3],fullmap+yoffset+(xoffset*100)+300+10000,10);
memcpy(map_overlay[0][4],fullmap+yoffset+(xoffset*100)+400+10000,10);
memcpy(map_overlay[0][5],fullmap+yoffset+(xoffset*100)+500+10000,10);
memcpy(map_overlay[0][6],fullmap+yoffset+(xoffset*100)+600+10000,10);
memcpy(map_overlay[0][7],fullmap+yoffset+(xoffset*100)+700+10000,10);
memcpy(map_overlay[0][8],fullmap+yoffset+(xoffset*100)+800+10000,10);
memcpy(map_overlay[0][9],fullmap+yoffset+(xoffset*100)+900+10000,10);
}
void game2_setup_audio()
@@ -730,7 +744,7 @@ int game2_tick()
}
// Redraw any tiles we're overlapping
if(map[0][x][y] ^ map[screen+1][x][y])
if((map[0][x][y] ^ map[screen+1][x][y]) || (map_overlay[0][x][y] ^ map_overlay[screen+1][x][y]))
{
map[screen+1][x][y] = map[0][x][y];
if(map[screen+1][x][y] < 128)
@@ -739,6 +753,13 @@ int game2_tick()
sprintf(tilenamebuffer,"%i",(map[screen+1][x][y]-128));
draw_tile(tilenamebuffer,x*100,y*100);
map_overlay[screen+1][x][y] = map_overlay[0][x][y];
if(map_overlay[screen+1][x][y] > 0)
{
sprintf(tilenamebuffer,"%i",map_overlay[screen+1][x][y]);
draw_tile_trans(tilenamebuffer,x*100,y*100);
}
}
}
}