badge/jumpnrun/game_state.c

   1 #include "game_state.h"
   2
   3 void jumpnrun_game_state_init(jumpnrun_game_state *state, jumpnrun_level const *lv) {
   4   memset(state, 0, sizeof(*state));
   5   jumpnrun_player_spawn(&state->player, lv->start_pos, lv->start_lives);
   6 }
   7
   8 void jumpnrun_game_state_respawn(jumpnrun_game_state *state, jumpnrun_level const *lv) {
   9   jumpnrun_player_respawn(&state->player, lv->start_pos);
  10   state->flags = 0;
  11   state->screen_left = 0;
  12   state->tick = 0;
  13   memset(state->shots, 0, sizeof(state->shots));
  14
  15   for(size_t i = 0; i < lv->header.enemy_count; ++i) {
  16     jumpnrun_enemy_reset(&lv->enemies[i]);
  17   }
  18 }
  19
  20 void jumpnrun_shot_spawn(jumpnrun_shot *shot, jumpnrun_game_state const *state) {
  21   static vec2d const shot_spawn_inertia = { FIXED_POINT_I(0, 800), FIXED_POINT_I(0, -800) };
  22
  23   shot->tick        = 0;
  24   shot->inertia     = shot_spawn_inertia;
  25
  26   if(jumpnrun_moveable_mirrored(&state->player.base)) {
  27     shot->current_box = rectangle_new((vec2d) { fixed_point_sub(rectangle_left(&state->player.base.hitbox), FIXED_INT(JUMPNRUN_SHOT_EXTENT)), rectangle_top(&state->player.base.hitbox) },
  28                                       (vec2d) { FIXED_INT(JUMPNRUN_SHOT_EXTENT), FIXED_INT(JUMPNRUN_SHOT_EXTENT) });
  29     shot->inertia.x   = fixed_point_neg(shot->inertia.x);
  30   } else {
  31     shot->current_box = rectangle_new((vec2d) { rectangle_right(&state->player.base.hitbox), rectangle_top(&state->player.base.hitbox) },
  32                                       (vec2d) { FIXED_INT(JUMPNRUN_SHOT_EXTENT), FIXED_INT(JUMPNRUN_SHOT_EXTENT) });
  33   }
  34
  35   shot->old_box = shot->current_box;
  36   shot->inertia = vec2d_add(shot->inertia, state->player.base.inertia);
  37 }