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#include <allegro.h>
#include <stdlib.h>
volatile long speed_counter = 0; //integer to store value of the speed counter
void increment_speed_counter() //function to increment the speed counter
{
speed_counter++;
}
END_OF_FUNCTION(increment_speed_counter);
int main(int argc, char *argv[])
{
allegro_init();
install_keyboard();
install_timer();
LOCK_VARIABLE(speed_counter);
LOCK_FUNCTION(increment_speed_counter);
install_int_ex(increment_speed_counter, BPS_TO_TIMER(60));
set_color_depth(16);
set_gfx_mode(GFX_AUTODETECT, 640,480,0,0);
BITMAP *buffer = create_bitmap(640,480); //create a buffer for smooth animation
if(buffer == NULL)
{
set_gfx_mode(GFX_TEXT,0,0,0,0);
allegro_message("Could not create buffer!");
exit(EXIT_FAILURE);
}
BITMAP *image1 = load_bitmap("C:/Dev-Cpp/Teh Stuph/AL8/image1.bmp", NULL);
if(image1 == NULL)
{
set_gfx_mode(GFX_TEXT,0,0,0,0); //sets screen mode for allegro messages
allegro_message("Could not load image1.bmp");
exit(EXIT_FAILURE);
}
BITMAP *image2 = load_bitmap ("C:/Dev-Cpp/Teh Stuph/AL8/image2.bmp", NULL);
if(image2 == NULL)
{
set_gfx_mode(GFX_TEXT,0,0,0,0);
allegro_message("Could not load image2.bmp");
exit(EXIT_FAILURE);
}
int image1_x_position = 0;
int image1_y_position = 0;
int image2_x_position = 100;
int image2_y_position = 100;
int image1_bb_left = image1_x_position;
int image1_bb_top = image1_y_position;
int image1_bb_right = (image1_bb_left + image1->w);
int image1_bb_bottom = (image1_bb_top + image1->h);
int image2_bb_left = image2_x_position;
int image2_bb_top = image2_y_position;
int image2_bb_right = (image2_bb_left + image2->w);
int image2_bb_bottom = (image2_bb_top + image2->h);
int show_bbox = FALSE;
int collision = FALSE;
while(!key[KEY_ESC])
{
while(speed_counter > 0)
{
if(key[KEY_LEFT])
image1_x_position --;
if(key[KEY_RIGHT])
image1_x_position ++;
if(key[KEY_DOWN])
image1_y_position ++;
if(key[KEY_UP])
image1_y_position --;
if(key[KEY_A])
image2_x_position --;
if(key[KEY_D])
image2_x_position ++;
if(key[KEY_S])
image2_y_position --;
if(key[KEY_W])
image2_y_position ++;
if(key[KEY_SPACE])
show_bbox = TRUE;
else if(!key[KEY_SPACE])
show_bbox = FALSE;
image1_bb_left = image1_x_position;
image1_bb_top = image1_y_position;
image1_bb_right = (image1_bb_left + image1->w);
image1_bb_bottom = (image1_bb_top + image1->h);
image2_bb_left = image1_x_position;
image2_bb_top = image1_y_position;
image2_bb_right = (image2_bb_left + image2->w);
image2_bb_bottom = (image2_bb_top + image2->h);
collision = TRUE; //assume there is a collision
if(image1_bb_bottom < image2_bb_top)
{
collision = FALSE;
}
if(image1_bb_top > image2_bb_bottom)
{
collision = FALSE;
}
if(image1_bb_right < image2_bb_left)
{
collision = FALSE;
}
if(image1_bb_left < image2_bb_right)
{
collision = FALSE;
}
speed_counter --;
}
draw_sprite(buffer, image1, image1_x_position, image1_y_position);
draw_sprite(buffer, image2, image2_x_position, image2_y_position);
if(show_bbox == TRUE)
{
line(buffer, image1_bb_left, image1_bb_top, image1_bb_right, image1_bb_top, makecol(255,0,0));
line(buffer, image1_bb_left, image1_bb_bottom, image1_bb_right, image1_bb_bottom, makecol(255,0,0));
line(buffer, image1_bb_left, image1_bb_top, image1_bb_left, image1_bb_bottom, makecol(255,0,0));
line(buffer, image1_bb_right, image1_bb_top, image1_bb_right, image1_bb_bottom, makecol(255,0,0));
line(buffer, image2_bb_left, image2_bb_top, image2_bb_right, image2_bb_top, makecol(255,0,0));
line(buffer, image2_bb_left, image2_bb_bottom, image2_bb_right, image2_bb_bottom, makecol(255,0,0));
line(buffer, image2_bb_left, image2_bb_top, image2_bb_left, image2_bb_bottom, makecol(255,0,0));
line(buffer, image2_bb_right, image2_bb_top, image2_bb_right, image2_bb_bottom, makecol(255,0,0));
}
if(collision == TRUE)
{
textprintf_ex(buffer, font, 0,0, makecol(255,255,255), -1, "Collision!");
}
blit(buffer, screen, 0,0,0,0,640,480); //blit the buffer
clear(buffer); //clear the buffer
destroy_bitmap(buffer);
destroy_bitmap(image1);
destroy_bitmap(image2);
return 0;
}
END_OF_MAIN()
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