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#include "map.h"
#include "entities.h"
#include "raylib.h"
#define RAYTMX_IMPLEMENTATION
#include "raytmx.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>
static TmxLayer *FindLayerByName(TmxMap *map, const char *name) {
for (uint32_t i = 0; i < map->layersLength; i++) {
if (strcmp(map->layers[i].name, name) == 0)
return &map->layers[i];
}
return NULL;
}
static TmxTileset *FindTileSetByGid(TmxMap *map, int gid) {
for (uint32_t i = 0; i < map->tilesetsLength; i++) {
if (map->tilesets[i].firstGid <= (uint32_t)gid &&
(uint32_t)gid <= map->tilesets[i].lastGid)
return &map->tilesets[i];
}
return NULL;
}
static PickupType GetPickupTypeByTileId(int tileId) {
int count = sizeof(PICKUP_TILE_ID) / sizeof(PICKUP_TILE_ID[0]);
for (int i = 0; i < count; i++) {
if (PICKUP_TILE_ID[i] == tileId)
return (PickupType)i;
}
return PICKUP_COIN;
}
static Rectangle GetTileBounds(TmxTileset *tileset, uint32_t tileId, float worldX,
float worldY) {
for (uint32_t i = 0; i < tileset->tilesLength; i++) {
if (tileset->tiles[i].id == tileId) {
TmxObjectGroup *og = &tileset->tiles[i].objectGroup;
if (og->objectsLength > 0) {
TmxObject *obj = &og->objects[0];
return (Rectangle){
worldX + (float)obj->x,
worldY + (float)obj->y,
(float)obj->width,
(float)obj->height,
};
}
}
}
return (Rectangle){worldX, worldY, (float)tileset->tileWidth,
(float)tileset->tileHeight};
}
static void LoadPickups(TmxMap *tmxMap, TmxLayer *layer, Entities *entities) {
TmxObjectGroup *group = &layer->exact.objectGroup;
for (uint32_t i = 0; i < group->objectsLength; i++) {
TmxObject *object = &group->objects[i];
if (object->type != OBJECT_TYPE_TILE ||
entities->pickupsCount >= MAX_ENTITIES)
continue;
TmxTileset *tileset = FindTileSetByGid(tmxMap, object->gid);
assert(tileset);
uint32_t tileId = object->gid - tileset->firstGid;
float x = (float)object->x;
float y = (float)object->y - (float)tileset->tileHeight;
Pickup *p = &entities->pickups[entities->pickupsCount++];
p->type = GetPickupTypeByTileId((int)tileId);
p->position = (Vector2){x, y};
p->bounds = GetTileBounds(tileset, tileId, x, y);
p->value = 1;
p->active = true;
p->gid = (uint32_t)object->gid;
}
}
static void LoadKeys(TmxMap *tmxMap, TmxLayer *layer, Entities *entities) {
TmxObjectGroup *group = &layer->exact.objectGroup;
for (uint32_t i = 0; i < group->objectsLength; i++) {
TmxObject *object = &group->objects[i];
if (object->type != OBJECT_TYPE_TILE || entities->keysCount >= MAX_ENTITIES)
continue;
TmxTileset *tileset = FindTileSetByGid(tmxMap, object->gid);
assert(tileset);
uint32_t tileId = object->gid - tileset->firstGid;
float x = (float)object->x;
float y = (float)object->y - (float)tileset->tileHeight;
Key *k = &entities->keys[entities->keysCount++];
k->position = (Vector2){x, y};
k->bounds = GetTileBounds(tileset, tileId, x, y);
k->uniqueId = (int)object->id;
k->active = true;
k->gid = (uint32_t)object->gid;
}
}
Map *LoadMap(const char *filename, Entities *entities) {
Map *map = (Map *)malloc(sizeof(Map));
if (!map)
return NULL;
map->map = LoadTMX(filename);
if (!map->map) {
free(map);
return NULL;
}
map->wallLayer = FindLayerByName(map->map, "Walls");
map->groundLayer = FindLayerByName(map->map, "Ground");
map->decorLayer = FindLayerByName(map->map, "Decor");
if (entities) {
TmxLayer *pickupsLayer = FindLayerByName(map->map, "Pickups");
if (pickupsLayer)
LoadPickups(map->map, pickupsLayer, entities);
TmxLayer *itemsLayer = FindLayerByName(map->map, "Items");
if (itemsLayer)
LoadKeys(map->map, itemsLayer, entities);
}
return map;
}
bool isCollision(Map *map, Rectangle bounds) {
if (!map || !map->wallLayer || !map->decorLayer)
return false;
return CheckCollisionTMXTileLayersRec(map->map, map->wallLayer, 1, bounds,
NULL) ||
CheckCollisionTMXTileLayersRec(map->map, map->decorLayer, 1, bounds,
NULL);
}
void DrawMap(Map *map) {
if (!map)
return;
AnimateTMX(map->map);
TmxLayer layers[3];
uint32_t count = 0;
if (map->groundLayer) layers[count++] = *map->groundLayer;
if (map->wallLayer) layers[count++] = *map->wallLayer;
if (map->decorLayer) layers[count++] = *map->decorLayer;
DrawTMXLayers(map->map, NULL, NULL, layers, count, 0, 0, WHITE);
}
static void DrawTileByGid(TmxMap *tmxMap, uint32_t gid, float x, float y) {
if (gid == 0 || gid >= tmxMap->gidsToTilesLength)
return;
TmxTile tile = tmxMap->gidsToTiles[gid];
if (tile.gid == 0)
return;
if (tile.hasAnimation && tile.frameIndex < tile.animation.framesLength) {
uint32_t frameGid = tile.animation.frames[tile.frameIndex].gid;
if (frameGid < tmxMap->gidsToTilesLength)
tile = tmxMap->gidsToTiles[frameGid];
}
DrawTextureRec(tile.texture, tile.sourceRect, (Vector2){x, y}, WHITE);
}
void DrawPickups(Entities *entities, Map *map) {
if (!entities || !map)
return;
for (int i = 0; i < entities->pickupsCount; i++) {
Pickup *p = &entities->pickups[i];
if (!p->active)
continue;
DrawTileByGid(map->map, p->gid, p->position.x, p->position.y);
}
}
void DrawKeys(Entities *entities, Map *map) {
if (!entities || !map)
return;
for (int i = 0; i < entities->keysCount; i++) {
Key *k = &entities->keys[i];
if (!k->active)
continue;
DrawTileByGid(map->map, k->gid, k->position.x, k->position.y);
}
}
void UnloadMap(Map *map) {
if (!map)
return;
UnloadTMX(map->map);
free(map);
}
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