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This commit is contained in:
Miloslav Číž 2019-10-06 16:47:47 +02:00
parent ea973c020c
commit d7e7606b1c
2 changed files with 74 additions and 30 deletions
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7
constants.h
View File

@ -46,7 +46,12 @@
/**
How quickly doors open and close, in RCL_Unit per second.
*/
#define SFG_DOOR_OPEN_SPEED 2048
/**
Says the (Chebyshev) distance in game squares at which level elements
(items, monsters etc.) become active.
*/
#define SFG_LEVEL_ELEMENT_ACTIVE_DISTANCE 8
#endif // guard

97
main.c
View File

@ -240,6 +240,8 @@ typedef struct
*/
typedef uint8_t SFG_ItemRecord;
#define SFG_ITEM_RECORD_ACTIVE_MASK 0x80
#define SFG_MAX_LEVEL_ITEMS SFG_MAX_LEVEL_ELEMENTS
/**
@ -262,6 +264,8 @@ struct
SFG_ItemRecord itemRecords[SFG_MAX_LEVEL_ITEMS]; ///< Holds level items
uint8_t itemRecordCount;
uint8_t checkedItemIndex; ///< Same as checkedDoorIndex, but for items.
} SFG_currentLevel;
#if SFG_DITHERED_SHADOW
@ -579,6 +583,8 @@ void SFG_setAndInitLevel(const SFG_Level *level)
SFG_LOG("initializing doors");
SFG_currentLevel.checkedDoorIndex = 0;
SFG_currentLevel.doorRecordCount = 0;
for (uint8_t j = 0; j < SFG_MAP_SIZE; ++j)
@ -611,6 +617,8 @@ void SFG_setAndInitLevel(const SFG_Level *level)
SFG_LOG("initializing level elements");
SFG_currentLevel.checkedItemIndex = 0;
SFG_currentLevel.itemRecordCount = 0;
for (uint8_t i = 0; i < SFG_MAX_LEVEL_ELEMENTS; ++i)
@ -619,8 +627,7 @@ void SFG_setAndInitLevel(const SFG_Level *level)
if (e->elementType == SFG_LEVEL_ELEMENT_BARREL)
{
SFG_currentLevel.itemRecords[SFG_currentLevel.itemRecordCount] =
SFG_LEVEL_ELEMENT_BARREL;
SFG_currentLevel.itemRecords[SFG_currentLevel.itemRecordCount] = i;
SFG_currentLevel.itemRecordCount++;
}
@ -768,37 +775,69 @@ void SFG_gameStep()
// handle door:
/* Check one door on whether a player is standing nearby. For performance
reasons we only check one door and move to another in the next frame. */
SFG_DoorRecord *door =
&(SFG_currentLevel.doorRecords[SFG_currentLevel.checkedDoorIndex]);
door->state = (door->state & ~SFG_DOOR_UP_DOWN_MASK) |
(
((door->coords[0] >= (SFG_player.squarePosition[0] - 1)) &&
(door->coords[0] <= (SFG_player.squarePosition[0] + 1)) &&
(door->coords[1] >= (SFG_player.squarePosition[1] - 1)) &&
(door->coords[1] <= (SFG_player.squarePosition[1] + 1))) ?
SFG_DOOR_UP_DOWN_MASK : 0x00
);
SFG_currentLevel.checkedDoorIndex++;
if (SFG_currentLevel.checkedDoorIndex >= SFG_currentLevel.doorRecordCount)
SFG_currentLevel.checkedDoorIndex = 0;
for (uint32_t i = 0; i < SFG_currentLevel.doorRecordCount; ++i)
if (SFG_currentLevel.doorRecordCount > 0) // has to be here
{
SFG_DoorRecord *door = &(SFG_currentLevel.doorRecords[i]);
/* Check one door on whether a player is standing nearby. For performance
reasons we only check one door and move to another in the next frame. */
int8_t height = door->state & SFG_DOOR_VERTICAL_POSITION_MASK;
SFG_DoorRecord *door =
&(SFG_currentLevel.doorRecords[SFG_currentLevel.checkedDoorIndex]);
height = (door->state & SFG_DOOR_UP_DOWN_MASK) ?
RCL_min(0x1f,height + SFG_DOOR_INCREMENT_PER_FRAME) :
RCL_max(0x00,height - SFG_DOOR_INCREMENT_PER_FRAME);
door->state = (door->state & ~SFG_DOOR_UP_DOWN_MASK) |
(
((door->coords[0] >= (SFG_player.squarePosition[0] - 1)) &&
(door->coords[0] <= (SFG_player.squarePosition[0] + 1)) &&
(door->coords[1] >= (SFG_player.squarePosition[1] - 1)) &&
(door->coords[1] <= (SFG_player.squarePosition[1] + 1))) ?
SFG_DOOR_UP_DOWN_MASK : 0x00
);
door->state = (door->state & ~SFG_DOOR_VERTICAL_POSITION_MASK) | height;
SFG_currentLevel.checkedDoorIndex++;
if (SFG_currentLevel.checkedDoorIndex >= SFG_currentLevel.doorRecordCount)
SFG_currentLevel.checkedDoorIndex = 0;
for (uint32_t i = 0; i < SFG_currentLevel.doorRecordCount; ++i)
{
SFG_DoorRecord *door = &(SFG_currentLevel.doorRecords[i]);
int8_t height = door->state & SFG_DOOR_VERTICAL_POSITION_MASK;
height = (door->state & SFG_DOOR_UP_DOWN_MASK) ?
RCL_min(0x1f,height + SFG_DOOR_INCREMENT_PER_FRAME) :
RCL_max(0x00,height - SFG_DOOR_INCREMENT_PER_FRAME);
door->state = (door->state & ~SFG_DOOR_VERTICAL_POSITION_MASK) | height;
}
}
// handle items, in a similar manner to door:
if (SFG_currentLevel.itemRecordCount > 0) // has to be here
{
SFG_ItemRecord item =
SFG_currentLevel.itemRecords[SFG_currentLevel.checkedItemIndex];
item &= ~SFG_ITEM_RECORD_ACTIVE_MASK;
SFG_LevelElement e =
SFG_currentLevel.levelPointer->elements[item];
if (
(RCL_absVal(SFG_player.squarePosition[0] - e.coords[0])
<= SFG_LEVEL_ELEMENT_ACTIVE_DISTANCE)
&&
(RCL_absVal(SFG_player.squarePosition[1] - e.coords[1])
<= SFG_LEVEL_ELEMENT_ACTIVE_DISTANCE)
)
item |= SFG_ITEM_RECORD_ACTIVE_MASK;
SFG_currentLevel.itemRecords[SFG_currentLevel.checkedItemIndex] = item;
SFG_currentLevel.checkedItemIndex++;
if (SFG_currentLevel.checkedItemIndex >= SFG_currentLevel.itemRecordCount)
SFG_currentLevel.checkedItemIndex = 0;
}
}