59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
#include <stdlib.h>
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#include "intro.h"
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#define FONT_SIZE 36
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void display_loading(void) {
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int window_width = GetRenderWidth();
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int window_height = GetRenderHeight();
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int loading_width = MeasureText("Loading...", FONT_SIZE);
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BeginDrawing();
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DrawText("Loading...", window_width - loading_width, window_height - FONT_SIZE, FONT_SIZE, RAYWHITE);
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EndDrawing();
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}
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Intro *load_intro(void) {
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Intro *i = malloc(sizeof(Intro));
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i->textures = malloc(sizeof(Texture) * 3);
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Image bgb = LoadImage("img/made_by_bgb.png");
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i->textures[0] = LoadTextureFromImage(bgb);
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UnloadImage(bgb);
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Image ray = LoadImage("img/made_w_raylib.png");
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i->textures[1] = LoadTextureFromImage(ray);
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UnloadImage(ray);
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Image title = LoadImage("img/title.png");
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i->textures[2] = LoadTextureFromImage(title);
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UnloadImage(title);
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i->texture_count = 3;
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i->timer = 0.;
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return i;
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}
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#define SLIDE_TIME 3.0
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#define FADE_IN_TIME 0.5
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#define FADE_OUT_TIME 0.5
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void intro_display(Intro *intro) {
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float frame_time, elapsed_time, alpha;
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for (int i = 0; i < intro->texture_count; i++) {
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intro->timer = GetTime() + SLIDE_TIME;
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while((frame_time = GetTime()) < intro->timer) {
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elapsed_time = SLIDE_TIME - (intro->timer - frame_time);
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if (elapsed_time < FADE_IN_TIME)
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alpha = ((FADE_IN_TIME - elapsed_time) / FADE_IN_TIME) * 255.;
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else if (elapsed_time > SLIDE_TIME - FADE_OUT_TIME)
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alpha = ((elapsed_time - (SLIDE_TIME - FADE_OUT_TIME)) / FADE_OUT_TIME) * 255.;
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else
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alpha = 0;
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BeginDrawing();
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DrawTexture(intro->textures[i], 0, 0, WHITE);
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DrawRectangle(0, 0, 800, 450, (Color) { 0, 0, 0, alpha });
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EndDrawing();
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}
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}
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}
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