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Add map fog

This commit is contained in:
Miloslav Číž 2020-02-21 21:21:09 +01:00
parent fbac1e486b
commit 54c2233e95
1 changed files with 39 additions and 20 deletions
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59
main.c
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@ -335,6 +335,9 @@ struct
uint8_t backgroundImage;
uint8_t teleportCount;
uint16_t mapRevealMask; /**< Bits say which parts of the map have been
revealed. */
} SFG_currentLevel;
#if SFG_DITHERED_SHADOW
@ -1080,12 +1083,10 @@ void SFG_setAndInitLevel(const SFG_Level *level)
SFG_LOG("initializing doors");
SFG_currentLevel.checkedDoorIndex = 0;
SFG_currentLevel.doorRecordCount = 0;
SFG_currentLevel.projectileRecordCount = 0;
SFG_currentLevel.teleportCount = 0;
SFG_currentLevel.mapRevealMask = 0;
for (uint8_t j = 0; j < SFG_MAP_SIZE; ++j)
{
@ -2280,6 +2281,14 @@ void SFG_updateLevel()
}
}
/**
Maps square position on the map to a bit in map reveal mask.
*/
static inline uint16_t SFG_getMapRevealBit(uint8_t squareX, uint8_t squareY)
{
return 1 << ((squareY / 16) * 4 + squareX / 16);
}
/**
Part of SFG_gameStep() for SFG_GAME_STATE_PLAYING.
*/
@ -2822,6 +2831,11 @@ void SFG_gameStepPlaying()
SFG_player.squarePosition[1] =
SFG_player.camera.position.y / RCL_UNITS_PER_SQUARE;
SFG_currentLevel.mapRevealMask |=
SFG_getMapRevealBit(
SFG_player.squarePosition[0],
SFG_player.squarePosition[1]);
SFG_updateLevel();
#if SFG_IMMORTAL == 0
@ -3015,26 +3029,31 @@ void SFG_drawMap()
for (uint16_t i = 0; i < maxI; ++i)
{
uint8_t properties;
uint8_t color = 0; // init with non-revealed color
SFG_TileDefinition tile =
SFG_getMapTile(SFG_currentLevel.levelPointer,i,j,&properties);
uint8_t color = 94; // init with player color
if (i != SFG_player.squarePosition[0] ||
j != SFG_player.squarePosition[1])
if (SFG_currentLevel.mapRevealMask & SFG_getMapRevealBit(i,j))
{
if (properties == SFG_TILE_PROPERTY_ELEVATOR)
color = 46;
else if (properties == SFG_TILE_PROPERTY_SQUEEZER)
color = 63;
else
{
color = SFG_TILE_FLOOR_HEIGHT(tile) / 8 + 2;
uint8_t properties;
if (properties == SFG_TILE_PROPERTY_DOOR)
color += 8;
SFG_TileDefinition tile =
SFG_getMapTile(SFG_currentLevel.levelPointer,i,j,&properties);
color = 94; // start with player color
if (i != SFG_player.squarePosition[0] ||
j != SFG_player.squarePosition[1])
{
if (properties == SFG_TILE_PROPERTY_ELEVATOR)
color = 46;
else if (properties == SFG_TILE_PROPERTY_SQUEEZER)
color = 63;
else
{
color = SFG_TILE_FLOOR_HEIGHT(tile) / 8 + 2;
if (properties == SFG_TILE_PROPERTY_DOOR)
color += 8;
}
}
}