d450dc59ce
Former-commit-id: 3714e6bfc11cd1ccb095602b2f93d64b4d107346 Former-commit-id: cfe3cc42c26367d1875c31c581ef1dbf4e2d89e5
113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
#include "draw.h"
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#include "parula.h"
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extern void drawString(char *, int, int, TTF_Font *, SDL_Color);
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void CROSSVP(double *v, double *u, double *w)
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{
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v[0] = u[1]*w[2] - u[2]*(w)[1];
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v[1] = u[2]*w[0] - u[0]*(w)[2];
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v[2] = u[0]*w[1] - u[1]*(w)[0];
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}
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void drawPlaneHeading(int x, int y, double heading, int signal, char *flight)
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{
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if(signal > 127) {
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signal = 127;
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}
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SDL_SetRenderDrawColor(game.renderer, parula[signal][0], parula[signal][1], parula[signal][2], SDL_ALPHA_OPAQUE);
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double body = 8.0;
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double wing = 6.0;
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double tail = 3.0;
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double vec[3];
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vec[0] = sin(heading * M_PI / 180);
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vec[1] = cos(heading * M_PI / 180);
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vec[2] = 0;
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double up[] = {0,0,1};
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double out[3];
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CROSSVP(out,vec,up);
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int x1, x2, y1, y2;
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//body
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x1 = x + round(-body*vec[0]);
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y1 = y + round(-body*vec[1]);
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x2 = x + round(body*vec[0]);
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y2 = y + round(body*vec[1]);
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SDL_RenderDrawLine(game.renderer, x1, y1, x2, y2);
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//wing
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x1 = x + round(-wing*out[0]);
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y1 = y + round(-wing*out[1]);
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x2 = x + round(wing*out[0]);
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y2 = y + round(wing*out[1]);
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SDL_RenderDrawLine(game.renderer, x1, y1, x2, y2);
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//tail
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x1 = x + round(-body*vec[0]) + round(-tail*out[0]);
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y1 = y + round(-body*vec[1]) + round(-tail*out[1]);
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x2 = x + round(-body*vec[0]) + round(tail*out[0]);
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y2 = y + round(-body*vec[1]) + round(tail*out[1]);
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SDL_RenderDrawLine(game.renderer, x1, y1, x2, y2);
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SDL_Color color = { parula[signal][0], parula[signal][1], parula[signal][2]};
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drawString(flight, x, y - 10, game.font, color);
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}
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void drawPlane(int x, int y, int signal)
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{
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SDL_SetRenderDrawColor(game.renderer, 255, 255, 255, SDL_ALPHA_OPAQUE);
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int length = 3.0;
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double vec[3];
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SDL_RenderDrawLine(game.renderer, x-length , y , x+length , y );
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SDL_RenderDrawLine(game.renderer, x , y-length , x , y+length );
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}
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void drawGrid()
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{
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SDL_SetRenderDrawColor(game.renderer, 40, 40, 40, SDL_ALPHA_OPAQUE);
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SDL_RenderDrawLine(game.renderer, 0, 120, 320, 120);
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SDL_RenderDrawLine(game.renderer, 160, 0, 160, 240);
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}
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void delay(unsigned int frameLimit)
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{
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unsigned int ticks = SDL_GetTicks();
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if (frameLimit < ticks)
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{
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return;
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}
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if (frameLimit > ticks + 16)
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{
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SDL_Delay(16);
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}
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else
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{
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SDL_Delay(frameLimit - ticks);
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}
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}
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