diff options
Diffstat (limited to 'src/field_ground_effect.c')
| -rw-r--r-- | src/field_ground_effect.c | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/src/field_ground_effect.c b/src/field_ground_effect.c new file mode 100644 index 000000000..42862d0ff --- /dev/null +++ b/src/field_ground_effect.c @@ -0,0 +1,240 @@ +#include "global.h" +#include "field_ground_effect.h" +#include "fieldmap.h" +#include "metatile_behavior.h" + +extern u32 gUnknown_08376008[]; + +void GetAllGroundEffectFlags_OnSpawn(struct MapObject *mapObj, u32 *flags) +{ + FieldObjectUpdateMetatileBehaviors(mapObj); + GetGroundEffectFlags_Reflection(mapObj, flags); + GetGroundEffectFlags_TallGrassOnSpawn(mapObj, flags); + GetGroundEffectFlags_LongGrassOnSpawn(mapObj, flags); + GetGroundEffectFlags_SandPile(mapObj, flags); + GetGroundEffectFlags_ShallowFlowingWater(mapObj, flags); + GetGroundEffectFlags_ShortGrass(mapObj, flags); + GetGroundEffectFlags_HotSprings(mapObj, flags); +} + +void GetAllGroundEffectFlags_OnBeginStep(struct MapObject *mapObj, u32 *flags) +{ + FieldObjectUpdateMetatileBehaviors(mapObj); + GetGroundEffectFlags_Reflection(mapObj, flags); + GetGroundEffectFlags_TallGrassOnBeginStep(mapObj, flags); + GetGroundEffectFlags_LongGrassOnBeginStep(mapObj, flags); + GetGroundEffectFlags_Tracks(mapObj, flags); + GetGroundEffectFlags_SandPile(mapObj, flags); + GetGroundEffectFlags_ShallowFlowingWater(mapObj, flags); + GetGroundEffectFlags_Puddle(mapObj, flags); + GetGroundEffectFlags_ShortGrass(mapObj, flags); + GetGroundEffectFlags_HotSprings(mapObj, flags); +} + +void GetAllGroundEffectFlags_OnFinishStep(struct MapObject *mapObj, u32 *flags) +{ + FieldObjectUpdateMetatileBehaviors(mapObj); + GetGroundEffectFlags_ShallowFlowingWater(mapObj, flags); + GetGroundEffectFlags_SandPile(mapObj, flags); + GetGroundEffectFlags_Puddle(mapObj, flags); + GetGroundEffectFlags_Ripple(mapObj, flags); + GetGroundEffectFlags_ShortGrass(mapObj, flags); + GetGroundEffectFlags_HotSprings(mapObj, flags); + GetGroundEffectFlags_Seaweed(mapObj, flags); + GetGroundEffectFlags_JumpLanding(mapObj, flags); +} + +void FieldObjectUpdateMetatileBehaviors(struct MapObject *mapObj) +{ + mapObj->mapobj_unk_1F = MapGridGetMetatileBehaviorAt(mapObj->coords3.x, mapObj->coords3.y); + mapObj->mapobj_unk_1E = MapGridGetMetatileBehaviorAt(mapObj->coords2.x, mapObj->coords2.y); +} + +void GetGroundEffectFlags_Reflection(struct MapObject *mapObj, u32 *flags) +{ + u32 reflectionFlags[2] = { 0x00000020, 0x00000010 }; + u8 type = FieldObjectCheckForReflectiveSurface(mapObj); + + if (type) + { + if (!mapObj->mapobj_bit_17) + { + mapObj->mapobj_bit_17 = 0; + mapObj->mapobj_bit_17 = 1; + *flags |= reflectionFlags[type - 1]; + } + } + else + { + mapObj->mapobj_bit_17 = 0; + } +} + +void GetGroundEffectFlags_TallGrassOnSpawn(struct MapObject *mapObj, u32 *flags) +{ + if (MetatileBehavior_IsTallGrass(mapObj->mapobj_unk_1E)) + *flags |= 0x1; +} + +void GetGroundEffectFlags_TallGrassOnBeginStep(struct MapObject *mapObj, u32 *flags) +{ + if (MetatileBehavior_IsTallGrass(mapObj->mapobj_unk_1E)) + *flags |= 0x2; +} + +void GetGroundEffectFlags_LongGrassOnSpawn(struct MapObject *mapObj, u32 *flags) +{ + if (MetatileBehavior_IsLongGrass(mapObj->mapobj_unk_1E)) + *flags |= 0x4; +} + +void GetGroundEffectFlags_LongGrassOnBeginStep(struct MapObject *mapObj, u32 *flags) +{ + if (MetatileBehavior_IsLongGrass(mapObj->mapobj_unk_1E)) + *flags |= 0x8; +} + +void GetGroundEffectFlags_Tracks(struct MapObject *mapObj, u32 *flags) +{ + if (MetatileBehavior_IsDeepSand(mapObj->mapobj_unk_1F)) + { + *flags |= 0x100; + } + else if (MetatileBehavior_IsSandOrDeepSand(mapObj->mapobj_unk_1F) + || MetatileBehavior_IsUnusedFootprintMetatile(mapObj->mapobj_unk_1F)) + { + *flags |= 0x80; + } +} + +void GetGroundEffectFlags_SandPile(struct MapObject *mapObj, u32 *flags) +{ + if (MetatileBehavior_IsDeepSand(mapObj->mapobj_unk_1E) + && MetatileBehavior_IsDeepSand(mapObj->mapobj_unk_1F)) + { + if (!mapObj->mapobj_bit_20) + { + mapObj->mapobj_bit_20 = 0; + mapObj->mapobj_bit_20 = 1; + *flags |= 0x800; + } + } + else + { + mapObj->mapobj_bit_20 = 0; + } +} + +void GetGroundEffectFlags_ShallowFlowingWater(struct MapObject *mapObj, u32 *flags) +{ + if ((MetatileBehavior_IsShallowFlowingWater(mapObj->mapobj_unk_1E) && MetatileBehavior_IsShallowFlowingWater(mapObj->mapobj_unk_1F)) + || (MetatileBehavior_IsPacifidlogLog(mapObj->mapobj_unk_1E) && MetatileBehavior_IsPacifidlogLog(mapObj->mapobj_unk_1F))) + { + if (!mapObj->mapobj_bit_19) + { + mapObj->mapobj_bit_19 = 0; + mapObj->mapobj_bit_19 = 1; + *flags |= 0x40; + } + } + else + { + mapObj->mapobj_bit_19 = 0; + } +} + +void GetGroundEffectFlags_Puddle(struct MapObject *mapObj, u32 *flags) +{ + if (MetatileBehavior_IsPuddle(mapObj->mapobj_unk_1E) + && MetatileBehavior_IsPuddle(mapObj->mapobj_unk_1F)) + { + *flags |= 0x400; + } +} + +void GetGroundEffectFlags_Ripple(struct MapObject *mapObj, u32 *flags) +{ + if (MetatileBehavior_HasRipples(mapObj->mapobj_unk_1E)) + *flags |= 0x200; +} + +void GetGroundEffectFlags_ShortGrass(struct MapObject *mapObj, u32 *flags) +{ + if (MetatileBehavior_IsShortGrass(mapObj->mapobj_unk_1E) + && MetatileBehavior_IsShortGrass(mapObj->mapobj_unk_1F)) + { + if (!mapObj->mapobj_bit_18) + { + mapObj->mapobj_bit_18 = 0; + mapObj->mapobj_bit_18 = 1; + *flags |= 0x20000; + } + } + else + { + mapObj->mapobj_bit_18 = 0; + } +} + +void GetGroundEffectFlags_HotSprings(struct MapObject *mapObj, u32 *flags) +{ + if (MetatileBehavior_IsHotSprings(mapObj->mapobj_unk_1E) + && MetatileBehavior_IsHotSprings(mapObj->mapobj_unk_1F)) + { + if (!mapObj->mapobj_bit_21) + { + mapObj->mapobj_bit_21 = 0; + mapObj->mapobj_bit_21 = 1; + *flags |= 0x40000; + } + } + else + { + mapObj->mapobj_bit_21 = 0; + } +} + +void GetGroundEffectFlags_Seaweed(struct MapObject *mapObj, u32 *flags) +{ + if (MetatileBehavior_IsSeaweed(mapObj->mapobj_unk_1E)) + *flags |= 0x80000; +} + +void GetGroundEffectFlags_JumpLanding(struct MapObject *mapObj, u32 *flags) +{ + typedef bool8 (*MetatileFunc)(u8); + + static const MetatileFunc metatileFuncs[] = + { + MetatileBehavior_IsTallGrass, + MetatileBehavior_IsLongGrass, + MetatileBehavior_IsPuddle, + MetatileBehavior_IsSurfableWaterOrUnderwater, + MetatileBehavior_IsShallowFlowingWater, + MetatileBehavior_IsATile, + }; + + static const u32 jumpLandingFlags[] = + { + 0x00001000, // Landing in tall grass + 0x00002000, // Landing in long grass + 0x00004000, // Landing on puddle + 0x00008000, // Landing on surfable water or underwater + 0x00004000, // Landing on shallow flowing water + 0x00010000, // Landing on any other type of ground + }; + + if (mapObj->mapobj_bit_5 && !mapObj->mapobj_bit_25) + { + u8 i; + + for (i = 0; i < 6; i++) + { + if (metatileFuncs[i](mapObj->mapobj_unk_1E)) + { + *flags |= jumpLandingFlags[i]; + return; + } + } + } +} |