#define EP_PASSABLE_OVER 14
#define EP_PASSABLE_INSIDE 15
#define EP_PASSABLE_UNDER 16
-#define EP_UNUSED_17 17
+#define EP_CHANGEABLE 17
#define EP_UNUSED_18 18
#define EP_UNUSED_19 19
#define EP_UNUSED_20 20
#define EP_CAN_BE_CRUMBLED 27
#define EP_CAN_MOVE 28
#define EP_CAN_PASS_MAGIC_WALL 29
-#define EP_DONT_TOUCH 30
-#define EP_ENEMY 31
-#define EP_DONT_GO_TO 32
-#define EP_CAN_EXPLODE 33
-#define EP_BD_ELEMENT 34
-#define EP_SP_ELEMENT 35
-#define EP_SB_ELEMENT 36
-#define EP_GEM 37
-#define EP_FOOD_DARK_YAMYAM 38
-#define EP_FOOD_PENGUIN 39
-#define EP_FOOD_PIG 40
-#define EP_HISTORIC_WALL 41
-#define EP_HISTORIC_SOLID 42
-#define EP_BELT 43
-#define EP_BELT_ACTIVE 44
-#define EP_BELT_SWITCH 45
-#define EP_TUBE 46
-#define EP_KEYGATE 47
-#define EP_AMOEBOID 48
-#define EP_AMOEBALIVE 49
-#define EP_HAS_CONTENT 50
-#define EP_ACTIVE_BOMB 51
-#define EP_INACTIVE 52
+#define EP_SWITCHABLE 30
+#define EP_DONT_TOUCH 31
+#define EP_ENEMY 32
+#define EP_DONT_GO_TO 33
+#define EP_CAN_EXPLODE 34
+#define EP_BD_ELEMENT 35
+#define EP_SP_ELEMENT 36
+#define EP_SB_ELEMENT 37
+#define EP_GEM 38
+#define EP_FOOD_DARK_YAMYAM 39
+#define EP_FOOD_PENGUIN 40
+#define EP_FOOD_PIG 41
+#define EP_HISTORIC_WALL 42
+#define EP_HISTORIC_SOLID 43
+#define EP_BELT 44
+#define EP_BELT_ACTIVE 45
+#define EP_BELT_SWITCH 46
+#define EP_TUBE 47
+#define EP_KEYGATE 48
+#define EP_AMOEBOID 49
+#define EP_AMOEBALIVE 50
+#define EP_HAS_CONTENT 51
+#define EP_ACTIVE_BOMB 52
+#define EP_INACTIVE 53
/* values for derived properties (determined from properties above) */
-#define EP_ACCESSIBLE_OVER 53
-#define EP_ACCESSIBLE_INSIDE 54
-#define EP_ACCESSIBLE_UNDER 55
-#define EP_WALKABLE 56
-#define EP_PASSABLE 57
-#define EP_ACCESSIBLE 58
-#define EP_WALL 59
-#define EP_SOLID_FOR_PUSHING 60
-#define EP_DRAGONFIRE_PROOF 61
-#define EP_EXPLOSION_PROOF 62
-
-#define NUM_ELEMENT_PROPERTIES 63
+#define EP_ACCESSIBLE_OVER 54
+#define EP_ACCESSIBLE_INSIDE 55
+#define EP_ACCESSIBLE_UNDER 56
+#define EP_WALKABLE 57
+#define EP_PASSABLE 58
+#define EP_ACCESSIBLE 59
+#define EP_SNAPPABLE 60
+#define EP_WALL 61
+#define EP_SOLID_FOR_PUSHING 62
+#define EP_DRAGONFIRE_PROOF 63
+#define EP_EXPLOSION_PROOF 64
+
+#define NUM_ELEMENT_PROPERTIES 65
#define NUM_EP_BITFIELDS ((NUM_ELEMENT_PROPERTIES + 31) / 32)
#define EP_BITFIELD_BASE 0
#define EP_BITMASK_DEFAULT 0
#define PROPERTY_BIT(p) (1 << ((p) % 32))
-#define PROPERTY_VAR(e, p) (Properties[e][(p) / 32])
-#define HAS_PROPERTY(e, p) ((PROPERTY_VAR(e, p) & PROPERTY_BIT(p)) != 0)
-#define SET_PROPERTY(e, p, v) ((v) ? \
+#define PROPERTY_VAR(e,p) (Properties[e][(p) / 32])
+#define HAS_PROPERTY(e,p) ((PROPERTY_VAR(e, p) & PROPERTY_BIT(p)) != 0)
+#define SET_PROPERTY(e,p,v) ((v) ? \
(PROPERTY_VAR(e,p) |= PROPERTY_BIT(p)) : \
(PROPERTY_VAR(e,p) &= ~PROPERTY_BIT(p)))
+
+/* values for change events for custom elements */
+#define CE_DELAY_FIXED 0
+#define CE_DELAY_RANDOM 1
+
+#define NUM_CHANGE_EVENTS 2
+
+#define CE_BITMASK_DEFAULT 0
+
+#define CUSTOM_ELEMENT_INFO(e) (level.custom_element[(e) - EL_CUSTOM_START])
+
+#define CH_EVENT_BIT(c) (1 << (c))
+#define CH_EVENT_VAR(e) (CUSTOM_ELEMENT_INFO(e).change.events)
+
+#define HAS_CHANGE_EVENT(e,c) (IS_CUSTOM_ELEMENT(e) && \
+ (CH_EVENT_VAR(e) & CH_EVENT_BIT(c)) != 0)
+#define SET_CHANGE_EVENT(e,c,v) (IS_CUSTOM_ELEMENT(e) ? \
+ ((v) ? \
+ (CH_EVENT_VAR(e) |= CH_EVENT_BIT(c)) : \
+ (CH_EVENT_VAR(e) &= ~CH_EVENT_BIT(c))) : 0)
+
+
/* macros for configurable properties */
#define IS_DIGGABLE(e) HAS_PROPERTY(e, EP_DIGGABLE)
#define IS_COLLECTIBLE(e) HAS_PROPERTY(e, EP_COLLECTIBLE)
#define IS_PASSABLE_INSIDE(e) HAS_PROPERTY(e, EP_PASSABLE_INSIDE)
#define IS_PASSABLE_UNDER(e) HAS_PROPERTY(e, EP_PASSABLE_UNDER)
#define IS_PUSHABLE(e) HAS_PROPERTY(e, EP_PUSHABLE)
+#define IS_CHANGEABLE(e) HAS_PROPERTY(e, EP_CHANGEABLE)
/* macros for special configurable properties */
#define IS_EM_SLIPPERY_WALL(e) HAS_PROPERTY(e, EP_EM_SLIPPERY_WALL)
#define CAN_BE_CRUMBLED(e) HAS_PROPERTY(e, EP_CAN_BE_CRUMBLED)
#define CAN_MOVE(e) HAS_PROPERTY(e, EP_CAN_MOVE)
#define CAN_PASS_MAGIC_WALL(e) HAS_PROPERTY(e, EP_CAN_PASS_MAGIC_WALL)
+#define IS_SWITCHABLE(e) HAS_PROPERTY(e, EP_SWITCHABLE)
#define DONT_TOUCH(e) HAS_PROPERTY(e, EP_DONT_TOUCH)
#define IS_ENEMY(e) HAS_PROPERTY(e, EP_ENEMY)
#define DONT_GO_TO(e) HAS_PROPERTY(e, EP_DONT_GO_TO)
#define IS_ACCESSIBLE_OVER(e) HAS_PROPERTY(e, EP_ACCESSIBLE_OVER)
#define IS_ACCESSIBLE_INSIDE(e) HAS_PROPERTY(e, EP_ACCESSIBLE_INSIDE)
#define IS_ACCESSIBLE_UNDER(e) HAS_PROPERTY(e, EP_ACCESSIBLE_UNDER)
+#define IS_SNAPPABLE(e) HAS_PROPERTY(e, EP_SNAPPABLE)
#define IS_WALKABLE(e) HAS_PROPERTY(e, EP_WALKABLE)
#define IS_PASSABLE(e) HAS_PROPERTY(e, EP_PASSABLE)
#define IS_ACCESSIBLE(e) HAS_PROPERTY(e, EP_ACCESSIBLE)
int shield_deadly_time_left;
};
+struct CustomElementChangeInfo
+{
+ unsigned long events; /* bitfield for change events */
+
+ short successor; /* new custom element after change */
+
+ int delay_fixed; /* added frame delay before changed (fixed) */
+ int delay_random; /* added frame delay before changed (random) */
+};
+
+struct CustomElementInfo
+{
+ struct CustomElementChangeInfo change;
+};
+
struct LevelInfo
{
int file_version; /* file format version the level is stored with */
boolean gravity;
boolean em_slippery_gems; /* EM style "gems slip from wall" behaviour */
- short custom_element_successor[NUM_CUSTOM_ELEMENTS];
+ struct CustomElementInfo custom_element[NUM_CUSTOM_ELEMENTS];
boolean no_level_file;
};