C++ Allegro 5 - 在初始化时缩放图像

Question

如何在游戏的初始化部分调整初始化图像与allegro5？

ALLEGRO_BITMAP *player = NULL; 
player = al_load_bitmap("st.png"); 
//something 
al_draw_bitmap(player, player_position_x, player_position_y, 0); 

Answer 1

而不是al_draw_bitmap()使用：

void al_draw_scaled_bitmap(ALLEGRO_BITMAP *bitmap, 
    float sx, float sy, float sw, float sh, 
    float dx, float dy, float dw, float dh, int flags);