gwj / graphics_tutorial · Commits

Commit 920a05c32f0809a09e81501e545f8171e8f08aef

Authored by Grzegorz Jabłoński
1 parent 6819eba7

Added moving target

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Showing 2 changed files with 83 additions and 0 deletions
05-target/cannon.c 0 → 100644
  View file @920a05c
  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 +
  16 + double bullet_distance;
  17 + int is_shooting = 0;
  18 + double fire_angle;
  19 +
  20 + int target_x = 0;
  21 + int target_y = 40;
  22 + while(1)
  23 + {
  24 + double delta_angle= 2.0 * (M_PI/180.0);
  25 + int x1 = 150 * cos(angle-delta_angle);
  26 + int y1 = 150 * sin(angle-delta_angle);
  27 + int x2 = 150 * cos(angle+delta_angle);
  28 + int y2 = 150 * sin(angle+delta_angle);
  29 + gfx_filledRect(0, 0, gfx_screenWidth() - 1, gfx_screenHeight() - 1, BLUE);
  30 + gfx_filledCircle(gfx_screenWidth() / 2, gfx_screenHeight(), 100, YELLOW);
  31 + gfx_filledTriangle(gfx_screenWidth() / 2, gfx_screenHeight() , gfx_screenWidth() / 2 + x1, gfx_screenHeight() - y1,
  32 + gfx_screenWidth() / 2 + x2, gfx_screenHeight() - y2, YELLOW);
  33 +
  34 +
  35 + gfx_filledRect(target_x - 10, target_y - 10, target_x + 10, target_y + 10, MAGENTA);
  36 +
  37 + if(is_shooting)
  38 + {
  39 + int x_bullet = bullet_distance * cos(fire_angle);
  40 + int y_bullet = bullet_distance * sin(fire_angle);
  41 +
  42 + gfx_filledCircle(gfx_screenWidth() / 2 + x_bullet, gfx_screenHeight() - y_bullet, 10, RED);
  43 + }
  44 +
  45 + gfx_updateScreen();
  46 +
  47 + if(is_shooting)
  48 + bullet_distance += 5.0;
  49 +
  50 + target_x += 3;
  51 + if(target_x > gfx_screenWidth())
  52 + target_x = 0;
  53 +
  54 + if(gfx_isKeyDown(SDLK_RIGHT))
  55 + angle -= 1.0 * (M_PI/180.0);
  56 + if(gfx_isKeyDown(SDLK_LEFT))
  57 + angle += 1.0 * (M_PI/180.0);
  58 + if(gfx_isKeyDown(SDLK_SPACE))
  59 + {
  60 + is_shooting = 1;
  61 + bullet_distance = 170.0;
  62 + fire_angle = angle;
  63 + }
  64 + SDL_Delay(100);
  65 + };
  66 + return 0;
  67 +}
... ...
05-target/makefile 0 → 100755
  View file @920a05c
  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
... ...