99 lines
3.1 KiB
C
99 lines
3.1 KiB
C
//
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// Created by bruno on 4/24/25.
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//
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#include "belt.h"
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#include "../util/util.h"
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#include "tile.h"
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#include "../player/player.h"
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static int scrollFrame = 0;
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unsigned long beltFrames = 0;
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void renderBelt(int x, int y, int w, int h, OrientDirection dir, SDL_Renderer *renderer) {
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int px = x * TILE_SIZE;
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int py = y * TILE_SIZE;
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uint16_t tileType = tileMap[y][x].type;
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SDL_Rect src1, src2, dst1, dst2;
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if (dir == ORIENT_LEFT || dir == ORIENT_RIGHT) {
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int offset = scrollFrame % TILE_SIZE;
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if (dir == ORIENT_RIGHT) {
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offset = TILE_SIZE - offset; // reverse scroll
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}
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src1 = (SDL_Rect) {offset, 0, TILE_SIZE - offset, TILE_SIZE};
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dst1 = (SDL_Rect) {px, py, (w - offset), h};
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src2 = (SDL_Rect) {0, 0, offset, TILE_SIZE};
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dst2 = (SDL_Rect) {px + (w - offset), py, offset, h};
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adjustRect(&dst1);
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adjustRect(&dst2);
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SDL_RenderCopy(renderer, TileRegistry[tileType].textures[dir], &src1, &dst1);
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SDL_RenderCopy(renderer, TileRegistry[tileType].textures[dir], &src2, &dst2);
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} else {
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int offset = scrollFrame % TILE_SIZE;
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if (dir == ORIENT_DOWN) {
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offset = TILE_SIZE - offset; // reverse scroll
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}
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src1 = (SDL_Rect) {0, offset, TILE_SIZE, TILE_SIZE - offset};
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dst1 = (SDL_Rect) {px, py, w, h - offset};
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src2 = (SDL_Rect) {0, 0, TILE_SIZE, offset};
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dst2 = (SDL_Rect) {px, py + (h - offset), w, offset};
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adjustRect(&dst1);
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adjustRect(&dst2);
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// Rotate to make the belt vertical
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SDL_RenderCopy(renderer, TileRegistry[tileType].textures[dir], &src1, &dst1);
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SDL_RenderCopy(renderer, TileRegistry[tileType].textures[dir], &src2, &dst2);
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}
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}
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void renderAllBelts(SDL_Renderer *renderer) {
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int scrollSpeed = 0; // pixels per step
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int scrollDelay = 1; // frames between steps
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if (beltFrames++ % scrollDelay == 0) {
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scrollFrame += scrollSpeed;
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}
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int tileSize = TILE_SIZE;
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for (int y = (playerY / TILE_SIZE) - (DISPLAY_MAP_HEIGHT / 2);
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y < (playerY / TILE_SIZE) + (DISPLAY_MAP_HEIGHT / 2); y++) {
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for (int x = (playerX / TILE_SIZE) - (DISPLAY_MAP_WIDTH / 2);
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x < (playerX / TILE_SIZE) + (DISPLAY_MAP_WIDTH / 2); x++) {
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Tile t = tileMap[y][x];
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if (t.type != TYPE_BELT) continue;
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renderBelt(x, y, tileSize, tileSize, t.direction, renderer);
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}
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}
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for (int y = (playerY / TILE_SIZE) - (DISPLAY_MAP_HEIGHT / 2);
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y < (playerY / TILE_SIZE) + (DISPLAY_MAP_HEIGHT / 2); y++) {
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for (int x = (playerX / TILE_SIZE) - (DISPLAY_MAP_WIDTH / 2);
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x < (playerX / TILE_SIZE) + (DISPLAY_MAP_WIDTH / 2); x++) {
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Tile t = tileMap[y][x];
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if (t.type != TYPE_BELT) continue;
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for (uint8_t lane = 0; lane < 2; lane++) {
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for (uint8_t itemIndex = 0; itemIndex < 2; itemIndex++) {
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if (t.items[lane][itemIndex].active) {
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renderItem(t.items[lane][itemIndex], renderer, lane);
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}
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}
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}
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}
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}
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} |