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#include "entity.h"
#include "map_manager.h"
#include "player.h"
#include "raymath.h"
#include "globals.h"
#include <stdlib.h>
#include <string.h>
EntityManager InitEntityManager(uint32_t maxPerType) {
EntityManager mgr;
mgr.enemies = (Enemy *)calloc(maxPerType, sizeof(Enemy));
mgr.collectibles = (Collectible *)calloc(maxPerType, sizeof(Collectible));
mgr.movables = (Movable *)calloc(maxPerType, sizeof(Movable));
mgr.statics = (Static *)calloc(maxPerType, sizeof(Static));
mgr.enemiesCount = 0;
mgr.collectiblesCount = 0;
mgr.movablesCount = 0;
mgr.staticsCount = 0;
return mgr;
}
void SpawnEntitiesFromMap(EntityManager *mgr, TmxMap *map) {
for (uint32_t i = 0; i < map->layersLength; i++) {
TmxLayer *layer = &map->layers[i];
// Handle Tile Layer Pickups
if (layer->type == LAYER_TYPE_TILE_LAYER &&
(strcmp(layer->name, "Pickups") == 0 || strcmp(layer->name, "Collectible") == 0)) {
TmxTileLayer *tileLayer = &layer->exact.tileLayer;
for (uint32_t y = 0; y < tileLayer->height; y++) {
for (uint32_t x = 0; x < tileLayer->width; x++) {
uint32_t gid = tileLayer->tiles[y * tileLayer->width + x];
if (gid != 0) {
float px = (float)x * map->tileWidth;
float py = (float)y * map->tileHeight;
// Default bounds (whole tile)
Rectangle customBounds = { px, py, (float)map->tileWidth, (float)map->tileHeight };
// Check if the tile has a custom collision shape from Tileset Editor
if (gid < map->gidsToTilesLength) {
TmxTile tileData = map->gidsToTiles[gid];
// Use the first animation frame's collision if it exists
uint32_t targetGid = gid;
if (tileData.hasAnimation && tileData.animation.framesLength > 0) {
targetGid = tileData.animation.frames[0].gid;
}
// Look up tile data for the frame (accounting for local vs global IDs)
// Note: raytmx internal gidsToTiles uses global IDs
if (targetGid < map->gidsToTilesLength) {
TmxObjectGroup colGroup = map->gidsToTiles[targetGid].objectGroup;
if (colGroup.objectsLength > 0) {
TmxObject colObj = colGroup.objects[0];
customBounds = (Rectangle){
px + (float)colObj.x,
py + (float)colObj.y,
(float)colObj.width,
(float)colObj.height
};
}
}
}
mgr->collectibles[mgr->collectiblesCount++] = (Collectible){
.position = {px, py},
.bounds = customBounds,
.active = true,
.gid = gid,
.tileX = (int)x,
.tileY = (int)y
};
}
}
}
}
if (layer->type != LAYER_TYPE_OBJECT_GROUP)
continue;
TmxObjectGroup group = layer->exact.objectGroup;
if (strcmp(layer->name, "Static") == 0) {
for (uint32_t j = 0; j < group.objectsLength; j++) {
TmxObject object = group.objects[j];
mgr->statics[mgr->staticsCount++] =
(Static){.position = {(float)object.x, (float)object.y},
.bounds = {(float)object.x, (float)object.y,
(float)object.width, (float)object.height},
.active = true,
.gid = object.gid};
}
}
if (strcmp(layer->name, "Movable") == 0) {
for (uint32_t j = 0; j < group.objectsLength; j++) {
TmxObject object = group.objects[j];
mgr->movables[mgr->movablesCount++] =
(Movable){.position = {(float)object.x, (float)object.y},
.bounds = {(float)object.x, (float)object.y,
(float)object.width, (float)object.height},
.active = true,
.gid = object.gid};
}
}
if (strcmp(layer->name, "Collectible") == 0) {
for (uint32_t j = 0; j < group.objectsLength; j++) {
TmxObject object = group.objects[j];
mgr->collectibles[mgr->collectiblesCount++] =
(Collectible){.position = {(float)object.x, (float)object.y},
.bounds = {(float)object.x, (float)object.y,
(float)object.width, (float)object.height},
.active = true,
.gid = object.gid};
}
}
if (strcmp(layer->name, "Enemy") == 0) {
for (uint32_t j = 0; j < group.objectsLength; j++) {
TmxObject object = group.objects[j];
mgr->enemies[mgr->enemiesCount++] =
(Enemy){.position = {(float)object.x, (float)object.y},
.bounds = {(float)object.x, (float)object.y,
(float)object.width, (float)object.height},
.active = true,
.gid = object.gid};
}
}
}
}
void UpdateEntities(EntityManager *mgr, Player *player, MapManager *mapMgr) {
// 1. Update Pickups (Collision only)
for (int i = 0; i < mgr->collectiblesCount; i++) {
if (mgr->collectibles[i].active &&
CheckCollisionRecs(player->bounds, mgr->collectibles[i].bounds)) {
mgr->collectibles[i].active = false;
// Visually remove from map if it's a tile pickup
if (mapMgr->pickupLayer && mapMgr->pickupLayer->type == LAYER_TYPE_TILE_LAYER) {
TmxTileLayer *tileLayer = &mapMgr->pickupLayer->exact.tileLayer;
int idx = mgr->collectibles[i].tileY * tileLayer->width + mgr->collectibles[i].tileX;
if (idx >= 0 && idx < (int)tileLayer->tilesLength) {
tileLayer->tiles[idx] = 0;
}
}
}
}
// 2. Update Movables (Physics/Pushing)
for (int i = 0; i < mgr->movablesCount; i++) {
Movable *m = &mgr->movables[i];
if (CheckCollisionRecs(player->bounds, m->bounds)) {
// Push logic: move the block in player's direction if no wall is there
Vector2 pushDir =
Vector2Normalize(Vector2Subtract(m->position, player->position));
Vector2 nextPos = Vector2Add(
m->position, Vector2Scale(pushDir, player->speed * GetFrameTime()));
Rectangle nextRect = {nextPos.x, nextPos.y, m->bounds.width,
m->bounds.height};
if (!IsWallCollision(mapMgr, nextRect)) {
m->position = nextPos;
m->bounds.x = nextPos.x;
m->bounds.y = nextPos.y;
}
}
}
// 3. Update Enemies (AI)
for (int i = 0; i < mgr->enemiesCount; i++) {
if (!mgr->enemies[i].active)
continue;
// Basic AI: Move toward player if within range
if (Vector2Distance(mgr->enemies[i].position, player->position) < 100.0f) {
Vector2 dir = Vector2Normalize(
Vector2Subtract(player->position, mgr->enemies[i].position));
mgr->enemies[i].position = Vector2Add(
mgr->enemies[i].position, Vector2Scale(dir, 50.0f * GetFrameTime()));
mgr->enemies[i].bounds.x = mgr->enemies[i].position.x;
mgr->enemies[i].bounds.y = mgr->enemies[i].position.y;
}
}
}
void UnloadEntityManager(EntityManager *mgr) {
if (mgr->enemies) free(mgr->enemies);
if (mgr->collectibles) free(mgr->collectibles);
if (mgr->movables) free(mgr->movables);
if (mgr->statics) free(mgr->statics);
mgr->enemies = NULL;
mgr->collectibles = NULL;
mgr->movables = NULL;
mgr->statics = NULL;
mgr->enemiesCount = 0;
mgr->collectiblesCount = 0;
mgr->movablesCount = 0;
mgr->staticsCount = 0;
}
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