gwj / graphics_tutorial · Commits

Commit 7804d394236ac210f51f3c1d8845d3695664df6d

Authored by Grzegorz Jabłoński
1 parent 35e4e70f

Cannon with wide barrel

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Showing 2 changed files with 50 additions and 0 deletions
02-cannon_wide/cannon.c 0 → 100644
  View file @7804d39
  1 +#include "primlib.h"
  2 +#include <stdlib.h>
  3 +#include <unistd.h>
  4 +
  5 +int main(int argc, char *argv[]) {
  6 + if (gfx_init())
  7 + exit(3);
  8 +
  9 + gfx_filledRect(0, 0, gfx_screenWidth() - 1, gfx_screenHeight() - 1, BLUE);
  10 + gfx_filledCircle(gfx_screenWidth() / 2, gfx_screenHeight(), 100, YELLOW);
  11 + gfx_line(gfx_screenWidth() / 2, gfx_screenHeight() , gfx_screenWidth() / 2, gfx_screenHeight() - 150, YELLOW);
  12 + gfx_updateScreen();
  13 +
  14 + double angle = 90.0 * (M_PI/180.0);
  15 + while(1)
  16 + {
  17 + double delta_angle= 2.0 * (M_PI/180.0);
  18 + int x1 = 150 * cos(angle-delta_angle);
  19 + int y1 = 150 * sin(angle-delta_angle);
  20 + int x2 = 150 * cos(angle+delta_angle);
  21 + int y2 = 150 * sin(angle+delta_angle);
  22 + gfx_filledRect(0, 0, gfx_screenWidth() - 1, gfx_screenHeight() - 1, BLUE);
  23 + gfx_filledCircle(gfx_screenWidth() / 2, gfx_screenHeight(), 100, YELLOW);
  24 + gfx_filledTriangle(gfx_screenWidth() / 2, gfx_screenHeight() , gfx_screenWidth() / 2 + x1, gfx_screenHeight() - y1,
  25 + gfx_screenWidth() / 2 + x2, gfx_screenHeight() - y2, YELLOW);
  26 + gfx_updateScreen();
  27 + int key=gfx_getkey();
  28 + if (key == SDLK_RIGHT)
  29 + angle -= 1.0 * (M_PI/180.0);
  30 + if (key == SDLK_LEFT)
  31 + angle += 1.0 * (M_PI/180.0);
  32 + };
  33 + return 0;
  34 +}
... ...
02-cannon_wide/makefile 0 → 100755
  View file @7804d39
  1 +TARGET=cannon
  2 +
  3 +all: $(TARGET)
  4 +
  5 +%.o:%.c
  6 + gcc -g -I.. -Wall -pedantic `sdl2-config --cflags` -c $< -o $@
  7 +
  8 +%: %.c ../primlib.o %.c
  9 + gcc -g -I.. -Wall -pedantic `sdl2-config --cflags` ../primlib.o $< -o $@ -lSDL2_gfx `sdl2-config --libs` -lm
  10 +
  11 +../primlib.o: ../primlib.c ../primlib.h
  12 +
  13 +$(TARGET): $(TARGET).c ../primlib.h
  14 +
  15 +clean:
  16 + -rm $(TARGET)
0 17 \ No newline at end of file
... ...