71 lines
2.2 KiB
C
71 lines
2.2 KiB
C
#include "world.h"
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#include "blocks.h"
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#include "zpl.h"
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#include <math.h>
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#define WORLD_BLOCK_OBSERVER(name) uint32_t name(uint32_t id, uint32_t block_idx)
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typedef WORLD_BLOCK_OBSERVER(world_block_observer_proc);
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static void world_fill_rect(uint32_t id, uint32_t x, uint32_t y, uint32_t w, uint32_t h, world_block_observer_proc *proc) {
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for (uint32_t cy=y; cy<y+h; cy++) {
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for (uint32_t cx=x; cx<x+w; cx++) {
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if (cx < 0 || cx >= world_width) continue;
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if (cy < 0 || cy >= world_height) continue;
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uint32_t i = (cy*world_width) + cx;
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if (proc) {
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uint32_t new_id = (*proc)(id, i);
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id = (new_id != BLOCK_INVALID) ? new_id : id;
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}
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world[i] = id;
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}
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}
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}
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static void world_fill_rect_anchor(uint32_t id, uint32_t x, uint32_t y, uint32_t w, uint32_t h, float ax, float ay, world_block_observer_proc *proc) {
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uint32_t w2 = (uint32_t)floorf(w*ax);
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uint32_t h2 = (uint32_t)floorf(h*ay);
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world_fill_rect(id, x-w2, y-h2, w, h, proc);
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}
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static WORLD_BLOCK_OBSERVER(shaper) {
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uint32_t biome = blocks_get_biome(id);
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uint32_t kind = blocks_get_kind(id);
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uint32_t old_biome = blocks_get_biome(world[block_idx]);
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uint32_t old_kind = blocks_get_kind(world[block_idx]);
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if (biome == old_biome) {
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if (kind == BLOCK_KIND_WALL && kind == old_kind) {
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return blocks_find(biome, BLOCK_KIND_HILL);
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}
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}
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return id;
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}
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int32_t world_gen(int32_t seed) {
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// TODO: perform world gen
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// atm, we will fill the world with ground and surround it by walls
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uint32_t wall_id = blocks_find(BLOCK_BIOME_DEV, BLOCK_KIND_WALL);
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uint32_t grnd_id = blocks_find(BLOCK_BIOME_DEV, BLOCK_KIND_GROUND);
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uint32_t watr_id = blocks_find(BLOCK_BIOME_DEV, BLOCK_KIND_WATER);
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// walls
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world_fill_rect(wall_id, 0, 0, world_width, world_height, NULL);
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// ground
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world_fill_rect(grnd_id, 1, 1, world_width-2, world_height-2, NULL);
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// water
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world_fill_rect_anchor(watr_id, 8, 8, 4, 4, 0.5f, 0.5f, NULL);
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// hills
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world_fill_rect_anchor(wall_id, 14, 21, 8, 8, 0.5f, 0.5f, shaper);
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world_fill_rect_anchor(wall_id, 14, 21, 4, 4, 0.5f, 0.5f, shaper);
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return WORLD_ERROR_NONE;
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}
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