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raylib-ascii-render
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Added """basic""" scene

This commit is contained in:
Casey 2022-10-13 23:48:14 +03:00
parent 72ff206acd
commit e25b935845
Signed by: hkc
GPG Key ID: F0F6CFE11CDB0960
3 changed files with 150 additions and 8 deletions
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2
Makefile
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@ -1,5 +1,5 @@
CFLAGS +=
LDFLAGS := -lraylib
LDFLAGS := -lraylib -lm
OBJECTS :=
raylib-ascii-render: lib

27
src/asciify.frag Normal file
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@ -0,0 +1,27 @@
// x-run: make -C.. run
#version 330
// Input vertex attributes (from vertex shader)
in vec2 fragTexCoord;
in vec4 fragColor;
uniform sampler2D texture0;
uniform sampler2D fontAtlas;
uniform vec2 fontSize;
uniform vec2 charactersXY;
out vec4 finalColor;
void main()
{
vec2 screenSize = fontSize * charactersXY;
vec2 pixelCoord = floor(fragTexCoord * screenSize);
vec2 symbol = floor(pixelCoord / fontSize) / screenSize;
vec2 inSymbol = mod(pixelCoord, fontSize) / fontSize;
vec4 texelColor = vec4(0.0, 0.0, 0.0, 1.0);
texelColor.rgb = texture(texture0, symbol * fontSize).rgb;
finalColor = texelColor;
}

129
src/main.c
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@ -1,12 +1,38 @@
// x-run: make -C.. run
#include <math.h>
#include <raylib.h>
#include <raymath.h>
#include <stdbool.h>
#include <stdio.h>
int main(void) {
InitWindow(320, 240, "Loading...");
SetTargetFPS(30);
#define LEN(X) (sizeof(X)/sizeof(X[0]))
#define EARTHSIZE(V) (V/6.371)
int font_size = 16, chars_x = 80, chars_y = 24;
const static struct planet {
int anchor;
Color color;
float radius;
float distance;
float year_length;
} planets[] = {
{ -1, { 252, 229, 112, 200 }, EARTHSIZE( 6.570), 0.0, 1.00 }, // SUN
{ 0, { 26, 26, 26, 255 }, EARTHSIZE( 2.440), 5.7, 87.97 }, // MERCURY
{ 0, { 230, 230, 230, 255 }, EARTHSIZE( 6.052), 10.8, 224.70 }, // VENUS
{ 0, { 47, 106, 105, 255 }, EARTHSIZE( 6.371), 15.0, 365.26 }, // EARTH
{ 0, { 153, 61, 0, 255 }, EARTHSIZE( 3.390), 22.8, 686.98 }, // MARS
{ 0, { 176, 127, 53, 255 }, EARTHSIZE( 6.991), 58.8, 4332.82 }, // JUPITER
{ 0, { 176, 143, 54, 255 }, EARTHSIZE( 5.823), 88.9, 10755.70 }, // SATURN
{ 0, { 85, 128, 170, 255 }, EARTHSIZE(25.362), 288.0, 30687.15 }, // URANUS
{ 0, { 54, 104, 150, 255 }, EARTHSIZE(24.622), 450.0, 60190.03 }, // NEPTUNE
{ 3, { 127, 127, 127, 255 }, EARTHSIZE( 1.737), 1.9, 27.30 }, // MOON
};
int main(int argc, char **argv) {
SetConfigFlags(FLAG_WINDOW_RESIZABLE);
InitWindow(320, 240, "Loading...");
SetTargetFPS(60);
int font_size = 16, chars_x = 160, chars_y = 50;
Font font = LoadFontEx("unscii-16-full.ttf", font_size, NULL, 256);
Vector2 glyphSize = MeasureTextEx(font, "A", font_size, 0);
@ -26,16 +52,105 @@ int main(void) {
}
Texture2D tex_atlas = LoadTextureFromImage(img_atlas);
SetWindowSize(chars_x * glyphSize.x, chars_y * glyphSize.y);
int wsize_x = chars_x * glyphSize.x, wsize_y = chars_y * glyphSize.y;
SetWindowMinSize(glyphSize.x * 40, glyphSize.y * 12);
SetWindowSize(wsize_x, wsize_y);
RenderTexture2D framebuffer = LoadRenderTexture(wsize_x, wsize_y);
Camera3D cam = {
.fovy = 45.0,
.projection = CAMERA_PERSPECTIVE,
.target.x = 0.0,
.target.y = 0.0,
.target.z = 0.0,
.up.x = 0.0,
.up.y = 1.0,
.up.z = 0.0,
.position.x = 50.0,
.position.y = 50.0,
.position.z = 50.0,
};
Shader shd_asciify = LoadShader(NULL, "./src/asciify.frag");
int locAtlas = GetShaderLocation(shd_asciify, "fontAtlas");
{
float tmp[2];
tmp[0] = glyphSize.x; tmp[1] = glyphSize.y;
printf("glyph size: %fx%f\n", tmp[0], tmp[1]);
SetShaderValue(shd_asciify, GetShaderLocation(shd_asciify, "fontSize"), tmp, SHADER_UNIFORM_VEC2);
tmp[0] = chars_x; tmp[1] = chars_y;
SetShaderValue(shd_asciify, GetShaderLocation(shd_asciify, "charactersXY"), tmp, SHADER_UNIFORM_VEC2);
}
SetCameraMode(cam, CAMERA_FREE);
double time = 0.;
bool shading = false;
for (int frame = 0; !WindowShouldClose(); frame++) {
time += GetFrameTime() * 8.;
if (IsWindowResized()) {
wsize_x = GetScreenWidth(); wsize_y = GetScreenHeight();
wsize_x = (chars_x = floor(wsize_x / glyphSize.x)) * glyphSize.x;
wsize_y = (chars_y = floor(wsize_y / glyphSize.y)) * glyphSize.y;
UnloadRenderTexture(framebuffer);
framebuffer = LoadRenderTexture(wsize_x, wsize_y);
float tmp[2];
tmp[0] = chars_x; tmp[1] = chars_y;
SetShaderValue(shd_asciify, GetShaderLocation(shd_asciify, "charactersXY"), tmp, SHADER_UNIFORM_VEC2);
}
if (IsKeyDown(KEY_LEFT_SHIFT) && IsKeyPressed(KEY_F)) {
SetWindowSize(wsize_x, wsize_y);
}
if (IsKeyPressed(KEY_S)) shading ^= 1;
BeginDrawing();
ClearBackground(BLACK);
DrawTexture(tex_atlas, 0, 0, WHITE);
UpdateCamera(&cam);
BeginTextureMode(framebuffer);
BeginMode3D(cam);
{
ClearBackground(BLANK);
DrawLine3D(Vector3Zero(), (Vector3){ 1.0, 0.0, 0.0 }, RED);
DrawLine3D(Vector3Zero(), (Vector3){ 0.0, 1.0, 0.0 }, GREEN);
DrawLine3D(Vector3Zero(), (Vector3){ 0.0, 0.0, 1.0 }, BLUE);
Vector3 positions[LEN(planets)] = { 0 };
for (int i = 0; i < LEN(planets); i++) {
struct planet planet = planets[i];
Vector3 orbit = planet.anchor == -1 ? Vector3Zero() : positions[planet.anchor];
Vector3 offset = { 0. };
float phase = time * M_PI * 2.0 / planets[i].year_length;
offset.x = sin(phase) * planets[i].distance;
offset.z = cos(phase) * planets[i].distance;
Vector3 pos = Vector3Add(orbit, offset);
DrawSphere(pos, planets[i].radius, planets[i].color);
DrawCircle3D(orbit, planets[i].distance, (Vector3){ 1.0, 0.0, 0.0 }, 90.0, planets[i].color);
positions[i] = pos;
}
}
EndMode3D();
EndTextureMode();
ClearBackground(RED);
DrawRectangle(0, 0, wsize_x, wsize_y, BLACK);
if (shading) BeginShaderMode(shd_asciify);
SetShaderValueTexture(shd_asciify, locAtlas, tex_atlas);
DrawTexturePro(framebuffer.texture, (Rectangle){
0, 0, wsize_x, -wsize_y
}, (Rectangle){
0, 0, wsize_x, wsize_y
}, (Vector2){ 0, 0 }, 0.0, WHITE);
if (shading) EndShaderMode();
EndDrawing();
}
UnloadFont(font);
UnloadImage(img_atlas);
UnloadShader(shd_asciify);
UnloadTexture(tex_atlas);
UnloadRenderTexture(framebuffer);
}