mirror of
https://github.com/OpenRCT2/OpenRCT2
synced 2026-01-17 20:13:07 +01:00
394 lines
9.7 KiB
C++
394 lines
9.7 KiB
C++
/*****************************************************************************
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* Copyright (c) 2014-2019 OpenRCT2 developers
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*
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* For a complete list of all authors, please refer to contributors.md
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* Interested in contributing? Visit https://github.com/OpenRCT2/OpenRCT2
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*
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* OpenRCT2 is licensed under the GNU General Public License version 3.
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*****************************************************************************/
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#include "../Game.h"
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#include "../audio/audio.h"
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#include "../localisation/Date.h"
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#include "../scenario/Scenario.h"
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#include "../sprites.h"
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#include "../world/Surface.h"
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#include "Sprite.h"
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#include <algorithm>
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#include <iterator>
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#include <limits>
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// clang-format off
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enum DUCK_STATE
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{
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FLY_TO_WATER,
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SWIM,
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DRINK,
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DOUBLE_DRINK,
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FLY_AWAY,
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};
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constexpr const int32_t DUCK_MAX_STATES = 5;
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static constexpr const CoordsXY DuckMoveOffset[] =
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{
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{ -1, 0 },
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{ 0, 1 },
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{ 1, 0 },
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{ 0, -1 },
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};
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static constexpr const uint8_t DuckAnimationFlyToWater[] =
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{
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8, 9, 10, 11, 12, 13
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};
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static constexpr const uint8_t DuckAnimationSwim[] =
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{
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0
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};
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static constexpr const uint8_t DuckAnimationDrink[] =
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{
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1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 0, 0, 0, 0, 0xFF
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};
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static constexpr const uint8_t DuckAnimationDoubleDrink[] =
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{
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4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6,
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6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 0, 0, 0, 0, 0xFF
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};
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static constexpr const uint8_t DuckAnimationFlyAway[] =
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{
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8, 9, 10, 11, 12, 13
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};
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static constexpr const uint8_t * DuckAnimations[] =
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{
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DuckAnimationFlyToWater, // FLY_TO_WATER
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DuckAnimationSwim, // SWIM
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DuckAnimationDrink, // DRINK
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DuckAnimationDoubleDrink, // DOUBLE_DRINK
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DuckAnimationFlyAway, // FLY_AWAY
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};
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// clang-format on
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bool rct_sprite::IsDuck()
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{
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return this->duck.sprite_identifier == SPRITE_IDENTIFIER_MISC && this->duck.type == SPRITE_MISC_DUCK;
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}
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rct_duck* rct_sprite::AsDuck()
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{
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rct_duck* result = nullptr;
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if (IsDuck())
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{
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return (rct_duck*)this;
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}
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return result;
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}
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void rct_duck::Invalidate()
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{
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invalidate_sprite_1((rct_sprite*)this);
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}
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void rct_duck::Remove()
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{
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Invalidate();
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sprite_remove((rct_sprite*)this);
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}
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void rct_duck::MoveTo(const CoordsXYZ& destination)
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{
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sprite_move(destination.x, destination.y, destination.z, (rct_sprite*)this);
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}
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void rct_duck::UpdateFlyToWater()
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{
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if ((gCurrentTicks & 3) != 0)
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return;
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frame++;
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if (frame >= std::size(DuckAnimationFlyToWater))
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{
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frame = 0;
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}
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Invalidate();
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int32_t manhattanDistance = abs(target_x - x) + abs(target_y - y);
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int32_t direction = sprite_direction >> 3;
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auto destination = CoordsXYZ{ CoordsXY{ x, y } + DuckMoveOffset[direction], 0 };
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int32_t manhattanDistanceN = abs(target_x - destination.x) + abs(target_y - destination.y);
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auto surfaceElement = map_get_surface_element_at(CoordsXY{ target_x, target_y });
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int32_t waterHeight = surfaceElement != nullptr ? surfaceElement->GetWaterHeight() : 0;
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if (waterHeight == 0)
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{
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state = DUCK_STATE::FLY_AWAY;
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UpdateFlyAway();
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}
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else
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{
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destination.z = abs(z - waterHeight);
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if (manhattanDistanceN <= manhattanDistance)
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{
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if (destination.z > manhattanDistanceN)
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{
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destination.z = z - 2;
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if (waterHeight >= z)
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{
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destination.z += 4;
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}
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frame = 1;
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}
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else
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{
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destination.z = z;
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}
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MoveTo(destination);
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Invalidate();
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}
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else
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{
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if (destination.z > 4)
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{
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state = DUCK_STATE::FLY_AWAY;
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UpdateFlyAway();
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}
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else
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{
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state = DUCK_STATE::SWIM;
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frame = 0;
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UpdateSwim();
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}
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}
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}
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}
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void rct_duck::UpdateSwim()
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{
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if (((gCurrentTicks + sprite_index) & 3) != 0)
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return;
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uint32_t randomNumber = scenario_rand();
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if ((randomNumber & 0xFFFF) < 0x666)
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{
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if (randomNumber & 0x80000000)
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{
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state = DUCK_STATE::DOUBLE_DRINK;
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frame = std::numeric_limits<uint16_t>::max();
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UpdateDoubleDrink();
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}
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else
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{
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state = DUCK_STATE::DRINK;
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frame = std::numeric_limits<uint16_t>::max();
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UpdateDrink();
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}
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}
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else
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{
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int32_t currentMonth = date_get_month(gDateMonthsElapsed);
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if (currentMonth >= MONTH_SEPTEMBER && (randomNumber >> 16) < 218)
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{
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state = DUCK_STATE::FLY_AWAY;
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UpdateFlyAway();
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}
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else
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{
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Invalidate();
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int16_t landZ = tile_element_height({ x, y });
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int16_t waterZ = tile_element_water_height({ x, y });
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if (z < landZ || waterZ == 0)
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{
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state = DUCK_STATE::FLY_AWAY;
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UpdateFlyAway();
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}
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else
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{
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z = waterZ;
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randomNumber = scenario_rand();
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if ((randomNumber & 0xFFFF) <= 0xAAA)
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{
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randomNumber >>= 16;
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sprite_direction = randomNumber & 0x18;
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}
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int32_t direction = sprite_direction >> 3;
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auto destination = CoordsXYZ{ CoordsXY{ x, y } + DuckMoveOffset[direction], 0 };
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landZ = tile_element_height(destination);
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waterZ = tile_element_water_height(destination);
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if (z >= landZ && z == waterZ)
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{
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destination.z = waterZ;
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MoveTo(destination);
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Invalidate();
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}
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}
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}
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}
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}
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void rct_duck::UpdateDrink()
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{
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frame++;
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if (DuckAnimationDrink[frame] == 0xFF)
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{
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state = DUCK_STATE::SWIM;
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frame = 0;
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UpdateSwim();
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}
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else
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{
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Invalidate();
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}
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}
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void rct_duck::UpdateDoubleDrink()
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{
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frame++;
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if (DuckAnimationDoubleDrink[frame] == 0xFF)
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{
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state = DUCK_STATE::SWIM;
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frame = 0;
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UpdateSwim();
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}
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else
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{
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Invalidate();
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}
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}
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void rct_duck::UpdateFlyAway()
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{
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if ((gCurrentTicks & 3) == 0)
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{
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frame++;
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if (frame >= std::size(DuckAnimationFlyAway))
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{
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frame = 0;
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}
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Invalidate();
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int32_t direction = sprite_direction >> 3;
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auto destination = CoordsXYZ{ x + (DuckMoveOffset[direction].x * 2), y + (DuckMoveOffset[direction].y * 2),
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std::min<int32_t>(z + 2, 496) };
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if (map_is_location_valid(destination))
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{
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MoveTo(destination);
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Invalidate();
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}
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else
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{
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Remove();
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}
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}
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}
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uint32_t rct_duck::GetFrameImage(int32_t direction) const
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{
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uint32_t imageId = 0;
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if (state < DUCK_MAX_STATES)
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{
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// TODO: Check frame is in range
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uint8_t imageOffset = DuckAnimations[state][frame];
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imageId = SPR_DUCK + (imageOffset * 4) + (direction / 8);
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}
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return imageId;
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}
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void create_duck(const CoordsXY& pos)
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{
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rct_sprite* sprite = create_sprite(SPRITE_IDENTIFIER_MISC);
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if (sprite == nullptr)
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return;
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CoordsXY targetPos = pos;
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int32_t offsetXY = scenario_rand() & 0x1E;
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targetPos.x += offsetXY;
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targetPos.y += offsetXY;
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sprite->duck.sprite_identifier = SPRITE_IDENTIFIER_MISC;
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sprite->duck.type = SPRITE_MISC_DUCK;
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sprite->duck.sprite_width = 9;
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sprite->duck.sprite_height_negative = 12;
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sprite->duck.sprite_height_positive = 9;
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sprite->duck.target_x = targetPos.x;
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sprite->duck.target_y = targetPos.y;
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uint8_t direction = scenario_rand() & 3;
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switch (direction)
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{
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case 0:
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targetPos.x = 8191 - (scenario_rand() & 0x3F);
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break;
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case 1:
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targetPos.y = scenario_rand() & 0x3F;
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break;
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case 2:
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targetPos.x = scenario_rand() & 0x3F;
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break;
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case 3:
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targetPos.y = 8191 - (scenario_rand() & 0x3F);
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break;
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}
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sprite->duck.sprite_direction = direction << 3;
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sprite_move(targetPos.x, targetPos.y, 496, sprite);
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sprite->duck.state = DUCK_STATE::FLY_TO_WATER;
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sprite->duck.frame = 0;
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}
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void duck_update(rct_duck* duck)
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{
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switch ((DUCK_STATE)duck->state)
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{
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case DUCK_STATE::FLY_TO_WATER:
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duck->UpdateFlyToWater();
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break;
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case DUCK_STATE::SWIM:
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duck->UpdateSwim();
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break;
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case DUCK_STATE::DRINK:
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duck->UpdateDrink();
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break;
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case DUCK_STATE::DOUBLE_DRINK:
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duck->UpdateDoubleDrink();
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break;
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case DUCK_STATE::FLY_AWAY:
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duck->UpdateFlyAway();
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break;
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}
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}
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void duck_press(rct_duck* duck)
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{
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audio_play_sound_at_location(SoundId::Quack, { duck->x, duck->y, duck->z });
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}
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void duck_remove_all()
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{
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uint16_t nextSpriteIndex;
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for (uint16_t spriteIndex = gSpriteListHead[SPRITE_LIST_MISC]; spriteIndex != SPRITE_INDEX_NULL;
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spriteIndex = nextSpriteIndex)
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{
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SpriteGeneric* sprite = &(get_sprite(spriteIndex)->generic);
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nextSpriteIndex = sprite->next;
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if (sprite->type == SPRITE_MISC_DUCK)
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{
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invalidate_sprite_1((rct_sprite*)sprite);
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sprite_remove((rct_sprite*)sprite);
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}
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}
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}
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uint32_t duck_get_frame_image(const rct_duck* duck, int32_t direction)
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{
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return duck->GetFrameImage(direction);
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}
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