factorygame/player/player.c

//
// Created by bruno on 4/24/25.
//

#include <SDL2/SDL_rect.h>
#include "player.h"
#include "../tiles/tile.h"

#define HEALTH_MARGIN 4

int playerSpeed = 4;

int playerReach = 4;

SDL_Texture *PlayerTexture;
SDL_Rect PlayerRect;

void setActivePlayerSlot(Player *plr, uint16_t activeSlotIndex) {
    activeSlotIndex = activeSlotIndex % itemRegistryIndex;
    if (activeSlotIndex <= 0) {
        activeSlotIndex = 1;
    }
    plr->inventory.activeSlotIndex = activeSlotIndex;
}

void moveActivePlayerSlot(Player *plr, bool up, bool seek) {
    if (seek) {
        uint16_t prevSlot = plr->inventory.activeSlotIndex;
        uint16_t newSlot = prevSlot;

        do {
            newSlot = (newSlot + (up ? 1 : ITEMREGISTRY_SIZE - 1)) % ITEMREGISTRY_SIZE;

            // Stop if we've looped all the way around
            if (newSlot == prevSlot) break;

            // Stop if we found a slot with count > 0
            if (plr->inventory.slotCounts[newSlot] > 0) break;
        } while (true);
        plr->inventory.activeSlotIndex = newSlot;
    } else {
        if (plr->inventory.activeSlotIndex == 1 && !up) {
            plr->inventory.activeSlotIndex = itemRegistryIndex - 1;
        } else if (plr->inventory.activeSlotIndex == itemRegistryIndex - 1 && up) {
            plr->inventory.activeSlotIndex = 1;
        } else {
            plr->inventory.activeSlotIndex =
                    (plr->inventory.activeSlotIndex + (up ? 1 : ITEMREGISTRY_SIZE - 1)) % ITEMREGISTRY_SIZE;

        }
    }

}


int playerX = (MAP_WIDTH / 2) * 16;
int playerY = (MAP_HEIGHT / 2) * 16;

void adjustRect(SDL_Rect *rect) {
    rect->x -= playerX;
    rect->y -= playerY;
    rect->x += DISPLAY_WIDTH / 2;
    rect->y += DISPLAY_HEIGHT / 2;
}

bool isInboundsTile(int x, int y) {
    return (playerX / TILE_SIZE) - (DISPLAY_MAP_WIDTH / 2) < x &&
           (playerY / TILE_SIZE) - (DISPLAY_MAP_HEIGHT / 2) < y &&
           (playerX / TILE_SIZE) + (DISPLAY_MAP_WIDTH / 2) > x && (playerX / TILE_SIZE) + (DISPLAY_MAP_WIDTH / 2) > y;
}

bool isInbounds(int x, int y) {
    return x > 0 && y > 0 && x < DISPLAY_WIDTH && y < DISPLAY_HEIGHT;
}

bool isInboundsRect(SDL_Rect rect) {
    if (isInbounds(rect.x, rect.y)) {
        return true;
    }
    if (rect.x < 0) {
        rect.x += rect.w;
    }
    if (rect.y < 0) {
        rect.y += rect.h;
    }
    if (isInbounds(rect.x, rect.y)) {
        return true;
    }
    if (rect.x > DISPLAY_WIDTH) {
        rect.x -= rect.w;
    }
    if (rect.y > DISPLAY_HEIGHT) {
        rect.y -= rect.h;
    }
    return isInbounds(rect.x, rect.y);
}

void initPlayer(Player *plr) {
    plr->cursor.direction = ORIENT_UP;
    setActivePlayerSlot(plr, 1);
    PlayerTexture = IMG_LoadTexture(renderer, "assets/player.png");
    SDL_QueryTexture(PlayerTexture, NULL, NULL, &PlayerRect.w, &PlayerRect.h);
    PlayerRect.x = (DISPLAY_WIDTH / 2) - (PlayerRect.w / 2);
    PlayerRect.y = (DISPLAY_HEIGHT / 2) - (PlayerRect.h / 2);
    plr->health = 64;
    plr->healthIdle = 0;
}

void updatePlayer(Player *plr) {
    if (plr->health == plr->prevHealth && plr->healthIdle < neededHealthIdle) {
        plr->healthIdle++;
    }
    if (plr->health < playerMaxHealth && plr->healthIdle >= neededHealthIdle) {
        plr->health++;
    }
    plr->prevHealth = plr->health;
}

void renderPlayer(Player *plr) {

    plr->cursor.targetTileRect.x = plr->cursor.tileX * TILE_SIZE;
    plr->cursor.targetTileRect.y = plr->cursor.tileY * TILE_SIZE;
    plr->cursor.targetTileRect.w = TILE_SIZE;
    plr->cursor.targetTileRect.h = TILE_SIZE;
    SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);
    plr->cursor.tileDiffX = plr->cursor.tileX - playerTileX;
    plr->cursor.tileDiffY = plr->cursor.tileY - playerTileY;
    if (abs(plr->cursor.tileDiffX) > abs(plr->cursor.tileDiffY)) {
        plr->cursor.tileDiff = plr->cursor.tileDiffX;
    } else {
        plr->cursor.tileDiff = plr->cursor.tileDiffY;
    }
    plr->cursor.canReach = abs(plr->cursor.tileDiff) <= playerReach;
    SDL_SetRenderDrawColor(renderer, plr->cursor.canReach ? 0 : 255, plr->cursor.canReach ? 255 : 0, 0, 128);
    adjustRect(&plr->cursor.targetTileRect);
    DrawThickRect(renderer, plr->cursor.targetTileRect, 4);

    uint16_t itemIndex = plr->inventory.activeSlotIndex;
    if (itemIndex < itemRegistryIndex) {
        SDL_Rect heldItemRect;
        heldItemRect.x = plr->cursor.windowX;
        heldItemRect.y = plr->cursor.windowY;
        heldItemRect.w = TILE_SIZE;
        heldItemRect.h = TILE_SIZE;
        SDL_Texture *itemTex = ItemRegistry[itemIndex].textureOnBelt[plr->cursor.direction];
        if (itemTex == NULL) {
            itemTex = ItemRegistry[itemIndex].textureOnBelt[ORIENT_LEFT];
        }
        if (itemTex != NULL) {

            if (plr->inventory.slotCounts[itemIndex] <= 0) {
                // Set a red tint (255, 0, 0)
                SDL_SetTextureColorMod(itemTex, 128, 128, 255);

                SDL_SetTextureAlphaMod(itemTex, 192);
            } else {
                SDL_SetTextureColorMod(itemTex, 255, 255, 255);

                SDL_SetTextureAlphaMod(itemTex, 255);
            }
            SDL_RenderCopy(renderer, itemTex, NULL,
                           &heldItemRect);
        }
    }
    SDL_RenderCopy(renderer, PlayerTexture, NULL, &PlayerRect);

    SDL_Color healthBarColor = {0, 240, 0, 255};

    renderBar(renderer, (DISPLAY_WIDTH / 2) - 128, DISPLAY_HEIGHT - 50, 200, 8, playerMaxHealth, plr->health, healthBarColor, 4);

    SDL_Color breakingBarColor = {128, 128, 0, 255};

    renderBar(renderer, (DISPLAY_WIDTH / 2) - 128, DISPLAY_HEIGHT - 70, 200, 8,
              getBreakTime(plr->cursor.targetTile->type), plr->cursor.breakingProgress, breakingBarColor, 4);

    SDL_Rect targetItemBGRect;
    targetItemBGRect.w = DISPLAY_WIDTH;
    targetItemBGRect.h = TILE_SIZE;
    targetItemBGRect.x = 0;
    targetItemBGRect.y = DISPLAY_HEIGHT - 30;
    SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
    SDL_RenderFillRect(renderer, &targetItemBGRect);

    SDL_Rect targetItemRect;
    targetItemRect.w = TILE_SIZE / 2;
    targetItemRect.h = TILE_SIZE / 2;
    targetItemRect.y = DISPLAY_HEIGHT - 30 + TILE_SIZE / 4;
    targetItemRect.x = TILE_SIZE / 4;

    for (uint16_t i = 1; i < ITEMREGISTRY_SIZE; i++) {
        SDL_Texture *itemTex = ItemRegistry[i].textureOnBelt[plr->cursor.direction];
        if (itemTex == NULL) {
            itemTex = ItemRegistry[i].textureOnBelt[ORIENT_LEFT];
        }
        if (itemTex != NULL) {
            if (plr->inventory.slotCounts[i] <= 0) {
                // Set a red tint (255, 0, 0)
                SDL_SetTextureColorMod(itemTex, 128, 128, 255);
            }
            SDL_RenderCopy(renderer, itemTex, NULL, &targetItemRect);
            SDL_SetTextureColorMod(itemTex, 255, 255, 255);

        }
        if (plr->inventory.activeSlotIndex == i) {
            SDL_SetRenderDrawColor(renderer, 16, plr->inventory.slotCounts[i] > 0 ? 128 : 16,
                                   plr->inventory.slotCounts[i] > 0 ? 32 : 128, 255);
            DrawThickRect(renderer, targetItemRect, 4);
        }
        targetItemRect.x += (TILE_SIZE / 2) + (TILE_SIZE / 4);
    }
}