142 lines
4.5 KiB
C
142 lines
4.5 KiB
C
#include <gint/display.h>
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#include <gint/keyboard.h>
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#include <stdlib.h>
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#define SCREEN_HEIGHT 216
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#define SCREEN_WIDTH 384
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#define GET_POS(x) ((abs(x)+x)/2)
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#define SEG_WIDTH 70
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#define C_RGB(r,g,b) ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3)
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#define SCREEN_HEIGHT 216
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#define SCREEN_WIDTH 384
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#define GET_POS(x) ((abs(x)+x)/2)
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#define SEG_WIDTH 70
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#define CH_Z 9
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const float CH_H = 4;
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const float CH_W = 1.3;
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float CH_HY = 0.80;
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const float dt = 0.01;
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int gray = C_RGB(131, 118, 156);
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int lightgray = C_RGB(194, 195, 199);
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int red = C_RGB(255, 0, 77);
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int lightblue = C_RGB(41, 173, 255);
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struct Road {
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int height; //number of elements
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struct Segment* segments; //array of segments
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float playerx;
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float playery;
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int width;
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int segment_height;
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int starty;
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int startx;
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};
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struct Segment {
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float x;
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float y;
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float z;
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int width;
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int height;
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int colour;
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};
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struct Segment seg(float x, float y, float z, int width, int height, int colour) {
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struct Segment segment = { x, y, z, width, height, colour };
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return segment;
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}
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void gen_road(unsigned char* grid, int size, struct Road *road) {
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int v = 0;
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for (int i = 0;i < size;i++) {
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uint8_t cell = grid[i];
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unsigned char low = cell & 0x0F;
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unsigned char high = cell >> 4;
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if (high == 0) {
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road->segments[v] = seg(0, 190 - low * 5, i * CH_Z, SEG_WIDTH, 20, gray);
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}
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else if (high == 1) {
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road->segments[v++] = seg(0, 190 - low * 5, i * CH_Z, SEG_WIDTH, 20, gray);
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float z = i*CH_Z+CH_Z;
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float s = SEG_WIDTH - z / (CH_H * CH_W);
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float w31 = 120 * (s / SEG_WIDTH);
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float w32 = (120 - SEG_WIDTH) / 2;
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float h31 = 70 * (s / SEG_WIDTH);
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float w30 = SEG_WIDTH * (s / SEG_WIDTH);
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float h30 = 20 * (s / SEG_WIDTH);
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float y31 = road->segments[v-1].y + h30;
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float h32 = w32 * (s / SEG_WIDTH);
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road->segments[v++] = seg((w31 - w30) / -2, y31, z, 120, 50, lightgray);
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road->segments[v++] = seg((w31 - w30) / -2, y31 - h31, z, w32, 70, lightgray);
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road->segments[v++] = seg( w30, y31 - h31, z, w32, 70, lightgray);
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road->segments[v++] = seg(w30, y31 - h31 - h32, z, w32, w32, red);
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road->segments[v] = seg((w31 - w30) / -2, y31 - h31 - h32, z, w32, w32, red);
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}
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v++;
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}
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}
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void draw_road(struct Road* road) {
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float s;
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for (int v = road->height - 1;v >= 0;v--) { //draws each rectangle from furthest to closest
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s = SEG_WIDTH - road->segments[v].z / (CH_H * CH_W);
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float yoffset = road->segments[v].y - road->segments[v].z * CH_HY + road->playery;
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float heightoffset = road->segments[v].height * (s / SEG_WIDTH);
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float widthoffset = road->segments[v].width * (s / SEG_WIDTH);
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float xoffset = ((road->segments[v].x + SCREEN_WIDTH / 2) - s / 2) - road->playerx * (s - road->segments[v].z / 10);
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if (yoffset > SCREEN_HEIGHT || yoffset + heightoffset < 0 || xoffset + widthoffset < 0 || xoffset - widthoffset > SCREEN_WIDTH)
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continue;
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drect(xoffset, yoffset, xoffset + widthoffset, yoffset+heightoffset, road->segments[v].colour);
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if (road->segments[v].colour == gray)
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drect(xoffset + s / 2, yoffset + 2, xoffset + s / 2 + 3, yoffset+2+3, C_WHITE);
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}
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}
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int main() {
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struct Road road;
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road.height = 32;
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road.playerx = 0;
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road.playery = 0;
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road.width = 100;
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road.starty = 160;
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road.startx = 40;
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road.segment_height = 30;
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road.segments = (struct Segment*)malloc(road.height * sizeof(struct Segment));
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unsigned char grid[] = {0x00,0x00,0x00,0x00,0x01,0x02,0x03,0x04,0x14,0x04,0x04,0x03,0x02, 0x01,0x00,0x00,0x00,0x10,0x00,0x00,0x00,0x00};
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gen_road(grid, sizeof(grid), &road);
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while (!keydown(KEY_MENU))
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{
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dclear(lightblue);
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clearevents();
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draw_road(&road);
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dupdate();
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const int left_down = keydown(KEY_LEFT);
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const int right_down = keydown(KEY_RIGHT);
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const int up_down = keydown(KEY_UP);
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const int down_down = keydown(KEY_DOWN); //pardon lephenixnoir :E
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if (right_down)
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road.playerx -= 10 * dt;
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else if (left_down)
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road.playerx += 10 * dt;
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else if (up_down)
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{
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road.playery -= 250 * dt;
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CH_HY -= 5 / 4 * dt;
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}
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else if (down_down)
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{
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road.playery += 250 * dt;
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CH_HY += 5 / 4 * dt;
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}
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}
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return 1;
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}
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//hey MR
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//yo duck goose
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