tumbledemerald-legacy/src/fldeff_escalator.c

194 lines
5.8 KiB
C
Raw Normal View History

2022-05-19 19:14:13 +02:00
#include "global.h"
#include "field_camera.h"
#include "field_player_avatar.h"
#include "fieldmap.h"
#include "fldeff.h"
#include "task.h"
#include "constants/metatile_labels.h"
static EWRAM_DATA u8 sEscalatorAnim_TaskId = 0;
static void SetEscalatorMetatile(u8 taskId, const s16 *metatileIds, u16 metatileMasks);
static void Task_DrawEscalator(u8 taskId);
#define ESCALATOR_STAGES 3
#define LAST_ESCALATOR_STAGE (ESCALATOR_STAGES - 1)
static const u16 sEscalatorMetatiles_1F_0[ESCALATOR_STAGES] = {
METATILE_PokemonCenter_Escalator1F_Tile0_Frame2,
METATILE_PokemonCenter_Escalator1F_Tile0_Frame1,
METATILE_PokemonCenter_Escalator1F_Tile0_Frame0
};
static const u16 sEscalatorMetatiles_1F_1[ESCALATOR_STAGES] = {
METATILE_PokemonCenter_Escalator1F_Tile1_Frame2,
METATILE_PokemonCenter_Escalator1F_Tile1_Frame1,
METATILE_PokemonCenter_Escalator1F_Tile1_Frame0
};
static const u16 sEscalatorMetatiles_1F_2[ESCALATOR_STAGES] = {
METATILE_PokemonCenter_Escalator1F_Tile2_Frame2,
METATILE_PokemonCenter_Escalator1F_Tile2_Frame1,
METATILE_PokemonCenter_Escalator1F_Tile2_Frame0
};
static const u16 sEscalatorMetatiles_1F_3[ESCALATOR_STAGES] = {
METATILE_PokemonCenter_Escalator1F_Tile3_Frame2,
METATILE_PokemonCenter_Escalator1F_Tile3_Frame1,
METATILE_PokemonCenter_Escalator1F_Tile3_Frame0
};
static const u16 sEscalatorMetatiles_2F_0[ESCALATOR_STAGES] = {
METATILE_PokemonCenter_Escalator2F_Tile0_Frame0,
METATILE_PokemonCenter_Escalator2F_Tile0_Frame1,
METATILE_PokemonCenter_Escalator2F_Tile0_Frame2
};
static const u16 sEscalatorMetatiles_2F_1[ESCALATOR_STAGES] = {
METATILE_PokemonCenter_Escalator2F_Tile1_Frame0,
METATILE_PokemonCenter_Escalator2F_Tile1_Frame1,
METATILE_PokemonCenter_Escalator2F_Tile1_Frame2
};
static const u16 sEscalatorMetatiles_2F_2[ESCALATOR_STAGES] = {
METATILE_PokemonCenter_Escalator2F_Tile2_Frame0,
METATILE_PokemonCenter_Escalator2F_Tile2_Frame1,
METATILE_PokemonCenter_Escalator2F_Tile2_Frame2
};
#define tState data[0]
#define tTransitionStage data[1]
#define tGoingUp data[2]
#define tDrawingEscalator data[3]
#define tPlayerX data[4]
#define tPlayerY data[5]
static void SetEscalatorMetatile(u8 taskId, const s16 *metatileIds, u16 metatileMasks)
{
s16 x = gTasks[taskId].tPlayerX - 1;
s16 y = gTasks[taskId].tPlayerY - 1;
s16 transitionStage = gTasks[taskId].tTransitionStage;
s16 i;
s16 j;
// Check all the escalator sections and only progress the selected one to the next stage
if (!gTasks[taskId].tGoingUp)
{
for (i = 0; i < 3; i++)
{
for (j = 0; j < 3; j++)
{
s16 metatileId = MapGridGetMetatileIdAt(x + j, y + i);
if (metatileIds[transitionStage] == metatileId)
{
if (transitionStage != LAST_ESCALATOR_STAGE)
MapGridSetMetatileIdAt(x + j, y + i, metatileMasks | metatileIds[transitionStage + 1]);
else
MapGridSetMetatileIdAt(x + j, y + i, metatileMasks | metatileIds[0]);
}
}
}
}
else
{
for (i = 0; i < 3; i++)
{
for (j = 0; j < 3; j++)
{
s16 metatileId = MapGridGetMetatileIdAt(x + j, y + i);
if (metatileIds[LAST_ESCALATOR_STAGE - transitionStage] == metatileId)
{
if (transitionStage != LAST_ESCALATOR_STAGE)
MapGridSetMetatileIdAt(x + j, y + i, metatileMasks | metatileIds[1 - transitionStage]);
else
MapGridSetMetatileIdAt(x + j, y + i, metatileMasks | metatileIds[LAST_ESCALATOR_STAGE]);
}
}
}
}
}
static void Task_DrawEscalator(u8 taskId)
{
s16 *data = gTasks[taskId].data;
tDrawingEscalator = TRUE;
// Set tile for each section of the escalator in sequence for current transition stage
switch (tState)
{
case 0:
SetEscalatorMetatile(taskId, sEscalatorMetatiles_1F_0, 0);
break;
case 1:
SetEscalatorMetatile(taskId, sEscalatorMetatiles_1F_1, 0);
break;
case 2:
SetEscalatorMetatile(taskId, sEscalatorMetatiles_1F_2, METATILE_COLLISION_MASK);
break;
case 3:
SetEscalatorMetatile(taskId, sEscalatorMetatiles_1F_3, 0);
break;
case 4:
SetEscalatorMetatile(taskId, sEscalatorMetatiles_2F_0, METATILE_COLLISION_MASK);
break;
case 5:
SetEscalatorMetatile(taskId, sEscalatorMetatiles_2F_1, 0);
break;
case 6:
SetEscalatorMetatile(taskId, sEscalatorMetatiles_2F_2, 0);
break;
}
tState = (tState + 1) & 7;
// If all metatiles of the escalator have been set, draw map and progress to next stage
if (tState == 0)
{
DrawWholeMapView();
tTransitionStage = (tTransitionStage + 1) % ESCALATOR_STAGES;
tDrawingEscalator = FALSE;
}
}
static u8 CreateEscalatorTask(bool16 goingUp)
{
u8 taskId = CreateTask(Task_DrawEscalator, 0);
s16 *data = gTasks[taskId].data;
PlayerGetDestCoords(&tPlayerX, &tPlayerY);
tState = 0;
tTransitionStage = 0;
tGoingUp = goingUp;
Task_DrawEscalator(taskId);
return taskId;
}
void StartEscalator(bool8 goingUp)
{
sEscalatorAnim_TaskId = CreateEscalatorTask(goingUp);
}
void StopEscalator(void)
{
DestroyTask(sEscalatorAnim_TaskId);
}
bool8 IsEscalatorMoving(void)
{
if (gTasks[sEscalatorAnim_TaskId].tDrawingEscalator == FALSE
&& gTasks[sEscalatorAnim_TaskId].tTransitionStage == LAST_ESCALATOR_STAGE)
return FALSE;
else
return TRUE;
}
#undef tState
#undef tTransitionStage
#undef tGoingUp
#undef tDrawingEscalator
#undef tPlayerX
#undef tPlayerY