84 lines
1.7 KiB
C++
84 lines
1.7 KiB
C++
#include <glerminal.h>
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#include <cmath>
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namespace
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{
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enum : unsigned char
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{
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empty,
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player,
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floor,
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wall
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};
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constexpr unsigned int WALL_LAYERS = LAYER_COUNT - 1;
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void init()
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{
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glerminal_load_sprites_file("resources/rogue.png");
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for (int i = 0; i < GRID_WIDTH + 2; i++)
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{
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for (int j = 0; j < GRID_HEIGHT + 2; j++)
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{
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for (int k = 0; k < WALL_LAYERS; k++)
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{
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const unsigned char v = (k + 1) * (256 / WALL_LAYERS) - 1;
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const unsigned int c = (0xFF << 24) | (v << 16) | (v << 8) | v;
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if (i == 1 || j == 1 || i == GRID_WIDTH || j == GRID_HEIGHT)
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{
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glerminal_set(i, j, k, floor);
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}
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else
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{
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glerminal_set(i, j, k, wall);
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}
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glerminal_color(i, j, k, c);
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glerminal_scale(i, j, k, (k / static_cast<float>(WALL_LAYERS)) + 1);
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}
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}
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}
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}
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void mainloop(double dt)
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{
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static double time = 0;
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time += dt;
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const float cx = GRID_WIDTH / 2.0f * cosf(time / 2) + GRID_WIDTH / 2.0f + 0.5f;
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const float cy = GRID_HEIGHT / 2.0f * sinf(time / 2) + GRID_HEIGHT / 2.0f + 0.5f;
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for (int i = 0; i < GRID_WIDTH + 2; i++)
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{
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for (int j = 0; j < GRID_HEIGHT + 2; j++)
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{
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for (int k = 0; k < WALL_LAYERS; k++)
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{
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const float dx = (i - cx);
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const float dy = (j - cy);
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const float dist = sqrtf(dx * dx + dy * dy);
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const float angle = atan2f(dy, dx);
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const float ox = dist * k / WALL_LAYERS * cosf(angle);
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const float oy = dist * k / WALL_LAYERS * sinf(angle);
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glerminal_offset(i, j, k, ox * 2, oy * 2);
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}
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glerminal_set(i, j, WALL_LAYERS, empty);
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}
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}
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glerminal_set(cx, cy, WALL_LAYERS, player);
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glerminal_flush();
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}
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}
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int main(int argc, char** argv)
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{
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glerminal_run({init, mainloop});
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} |