110 lines
2.3 KiB
C
110 lines
2.3 KiB
C
#include <stddef.h>
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#include <raylib.h>
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#include <raymath.h>
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#include <stdio.h>
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#include "objects.h"
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struct global {
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const int scwidth, scheight;
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int fps;
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object *objs[128];
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size_t obj_count;
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double terminal_v;
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};
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struct global gl = {1600, 900, 144, {}, 0, 15};
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void addobj(object *obj)
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{
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gl.objs[gl.obj_count++] = obj;
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}
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void drawobjs()
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{
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for (int i = 0; i < gl.obj_count; i++)
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{
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object *obj = gl.objs[i];
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DrawSphere(obj->pos, obj->r, obj->color);
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}
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}
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void updateobjs()
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{
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for (int i = 0; i < gl.obj_count; i++)
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{
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object *obj = gl.objs[i];
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obj->vel.y -= 0 * GetFrameTime();
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//if (obj->vel.y < gl.terminal_yv)
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if (obj->pos.y < obj->r) {
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obj->pos.y = obj->r;
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obj->vel.y *= -obj->restitution;
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}
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for (int j = 0; j < gl.obj_count; j++)
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{
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if (i==j) continue;
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object *obj2 = gl.objs[j];
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integrate_g(obj, obj2, gravitation_force(obj, obj2));
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//float min_dist_delta = Vector3Distance(obj->pos, obj2->pos) - (obj->r+obj2->r);
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//if (min_dist_delta < 0)
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//{
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// Vector3SubtractValue(obj->pos, min_dist_delta);
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//}
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if (Vector3Distance(obj->pos, obj2->pos) < obj->r+obj2->r+0.01f)
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{
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resolve_collision(obj, obj2);
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}
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}
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float ratio_speed_to_terminal = Vector3Length(obj->vel)/gl.terminal_v;
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if (Vector3Length(obj->vel) > gl.terminal_v)
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{
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obj->vel = Vector3Scale(obj->vel, 1.0f/ratio_speed_to_terminal);
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}
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DrawLine3D(obj->pos, Vector3Add(obj->pos, obj->vel), GREEN);
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obj->pos = Vector3Add(obj->pos, Vector3Scale(obj->vel, GetFrameTime()));
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}
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}
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void freeobjs()
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{
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for (int i = 0; i < gl.obj_count; i++)
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{
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object *obj = gl.objs[i];
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free(obj);
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}
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}
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int main(void) {
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InitWindow(gl.scwidth, gl.scheight, "raylib engine");
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SetTargetFPS(gl.fps);
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addobj(newobj((Vector3){0, 20, 0}, 1, RED, 1, 1000));
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addobj(newobj((Vector3){8, 20, 0}, 2, BLUE, 1, 2000));
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gl.objs[1]->vel = (Vector3){0, 0, 0};
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Camera3D camera = {{0, 20, -30}, {0, 0, 0}, {0, 1, 0}, 45, CAMERA_PERSPECTIVE};
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DisableCursor();
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while(!WindowShouldClose())
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{
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UpdateCamera(&camera, CAMERA_FREE);
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BeginDrawing();
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{
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ClearBackground(BLACK);
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BeginMode3D(camera);
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DrawPlane((Vector3){0, 0, 0}, (Vector2){500, 500}, RAYWHITE);
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updateobjs();
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drawobjs();
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EndMode3D();
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}
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EndDrawing();
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}
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freeobjs();
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CloseWindow();
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return 0;
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}
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