153 lines
3.6 KiB
C
153 lines
3.6 KiB
C
#include "penger.c"
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#define GREEN 0xff00ff00
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#define RED 0xff0000ff
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#define BLUE 0xffff0000
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#define BLACK 0xff000000
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#define GRAVITY 9
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const unsigned int width = 800;
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const unsigned int height = 600;
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unsigned int BUFFER[width * height];
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// importer depuis js
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int get_scale(void);
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float random(void); // flemme de coder un algo random, je recup celui de js (Math.random)
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typedef struct v2 {
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float x, y;
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} v2;
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// position du penger au milieu
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v2 penger_pos = {width/2, height/2};
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v2 velocity = {0, 0};
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// keyboard code definit par js
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typedef enum Key {
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SHIFT = 16,
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SPACE = 32,
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ARROW_LEFT = 37,
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ARROW_RIGHT = 39,
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ARROW_UP = 38,
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ARROW_DOWN = 40,
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KEY_COUNT,
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} Key;
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Key keys[KEY_COUNT] = {0};
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void key_pressed(int key)
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{
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if (key < 0 || key >= KEY_COUNT) return;
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keys[key] = 1;
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}
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void key_released(int key)
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{
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if (key < 0 || key >= KEY_COUNT) return;
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keys[key] = 0;
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}
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void set_velocity(float x, float y)
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{
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velocity = (v2){x, y};
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}
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int rand(int min, int max)
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{
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return min + random() * (max - min);
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}
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void rebondi(v2 *pos, int scale)
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{
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float div = -1.5;
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if (pos->x - penger_width*scale/2 < 0) {
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pos->x = penger_width*scale/2;
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velocity.x /= div;
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}
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if (pos->y - penger_height*scale/2 < 0) {
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pos->y = penger_height*scale/2;
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velocity.y /= div;
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}
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if (pos->x + penger_width*scale/2 >= width) {
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pos->x = width - penger_width*scale/2;
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velocity.x /= div;
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}
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if (pos->y + penger_height*scale/2 >= height) {
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pos->y = height - penger_height*scale/2;
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velocity.y /= div;
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}
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}
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void init()
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{
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}
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void draw(float dt)
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{
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int scale = get_scale();
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// jump
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if (keys[SPACE]) {
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velocity.y += velocity.y < 0 ? -10 : 10;
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velocity.x += rand(-10, 10);
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}
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// update pos avec velocity si pas de touche presser
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if (!keys[ARROW_UP] && !keys[ARROW_DOWN]) {
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velocity.y += GRAVITY * dt;
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penger_pos.y += velocity.y;
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}
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if (!keys[ARROW_LEFT] && !keys[ARROW_RIGHT]) {
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penger_pos.x += velocity.x;
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}
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// movement
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float speed = 10.0f;
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if ((keys[ARROW_UP] || keys[ARROW_DOWN]) && (keys[ARROW_LEFT] || keys[ARROW_RIGHT]))
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speed = 6.324f; // sqrt(speed) * 2 with speed = 10
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if (keys[SHIFT])
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speed /= 2.0f;
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if (keys[ARROW_RIGHT]) {
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penger_pos.x += speed;
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if (velocity.x < 0) velocity.x *= -1;
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}
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if (keys[ARROW_LEFT]) {
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penger_pos.x -= speed;
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if (velocity.x > 0) velocity.x *= -1;
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}
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if (keys[ARROW_DOWN])
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penger_pos.y += speed;
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if (keys[ARROW_UP])
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penger_pos.y -= speed;
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// background
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for (int i = 0; i < width * height; i++)
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BUFFER[i] = GREEN;
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rebondi(&penger_pos, scale);
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// position du penger en haut a gauche de l'image
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v2 penger_origin = {0};
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penger_origin.x = penger_pos.x - penger_width*scale/2;
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penger_origin.y = penger_pos.y - penger_height*scale/2;
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// dessine le penger sur le canva
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for (int y = 0; y < penger_height; y++) {
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for (int i = 0; i < penger_width; i++) {
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if (penger_img[y][i] <= 0x00FFFFFF) // pixel transparant
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continue;
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for (int s1 = 0; s1 < scale; s1++) {
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for (int s2 = 0; s2 < scale; s2++) {
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int idx_x = penger_origin.x + i*scale+s1;
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int idx_y = penger_origin.y + y*scale+s2;
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if (idx_x < 0 || idx_x >= width || idx_y < 0 || idx_y >= height)
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continue;
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BUFFER[idx_y*width + idx_x] = penger_img[y][i];
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}
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}
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}
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}
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}
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